Hack The Sec-Leading Resource Of Linux Tutorial: centos

How To Install FreePBX on CentOS

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<h1 class="entry-title" itemprop="headline" style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 39px; line-height: 1.1; margin: 21px 0px 0px;">
<u><span style="color: red;">Install FreePBX on CentOS</span></u></h1>
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<span style="font-family: Georgia, Times New Roman, serif;">PBX (stands for private branch exchange) is a private telephone network used that can be very easily connected to the public landline and mobile networks. The PBX network also provides audio, video and instant messaging communication through the TCP/IP protocol stack for its internal network and interconnects its internal network with the Public Switched Telephone Network (PSTN) for telephony communication.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggyfE0RGe3F6bNgKJwgmfEIGAcZp-aiPwwHnE7ozF_zlWvKp6oKjpXoSWvr5RXrWcAJ0XpN_TmttG36GOIdt3cSBN8CNZCjuQBl6Xmstji8pMAmlkpIxsB-Pgel9vbFNWYbrxi08fkUEOx/s1600/asterisk_centos_freepbx_www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEggyfE0RGe3F6bNgKJwgmfEIGAcZp-aiPwwHnE7ozF_zlWvKp6oKjpXoSWvr5RXrWcAJ0XpN_TmttG36GOIdt3cSBN8CNZCjuQBl6Xmstji8pMAmlkpIxsB-Pgel9vbFNWYbrxi08fkUEOx/s1600/asterisk_centos_freepbx_www.hackthesec.co.in.png" /></a></div>
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<span style="font-family: Georgia, Times New Roman, serif;">A lot of successful businesses are aiming to have their own telephony system that will allow them to have many different features, lower their costs using VoIP, especially on international calls, but inside that company as well. Some of them are choosing hosted solution, some are having their own In-House solution. In this tutorial we are installing FreePBX & Asterisk VoIP on a base <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS</a> 6.4 installation.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;">Asterisk is an open source software implementation of a telephone private branch exchange (PBX); it was created in 1999. Like any PBX, it allows attached telephones to make calls to one another, and to connect to other telephone services, such as the public switched telephone network (PSTN) and Voice over Internet Protocol (VoIP) services. Its name comes from the asterisk symbol, *. Asterisk includes many features like Voice mail, conference calling, Interactive voice response, automatic call distribution, Fax to email services etc.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;">In order to control Asterisk, we will use FreePBX. It is open source graphical user interface that makes asterisk management very easy. It is usually included in the asterisk distribution, but it can be installed manually if needed. FreePBX distribution is unified server distribution that includes all of the software packages and dependencies required for Asterisk VoIP server, such as:</span></div>
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<ul style="text-align: left;">
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/Apache" target="_blank">Apache Web Server</a></span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Cyrus SASL (Simple Authentication Security Layer)</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Dnsmasq</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/fail2ban" target="_blank">Fail2ban</a></span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/Iptables" target="_blank">iptables</a></span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Mailx</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/Mysql" target="_blank">MySQL </a>Server</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Network Time Protocol</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/VPN" target="_blank">OpenVPN </a>Server</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;"><a href="http://www.hackthesec.co.in/search/label/postfix" target="_blank">Postfix </a>MTA</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Prosody XMPP Server</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">TFTP Server</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Very Secure FTP Daemon (<a href="http://www.hackthesec.co.in/search/label/vsftp" target="_blank">vsftpd</a>)</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Vim text editor</span></li>
</ul>
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<span style="font-family: Georgia, Times New Roman, serif;">Before we start with the installation, we must make sure that the server has decent and stable internet connection and it should be in a geographical location near the place where the majority of our calls will come from. We also need to determine the size of our server. That will depends mostly on the number of the concurrent calls that we anticipate to have. It is not that bad even if we choose wrong, since we can resize our server at any time later, but some best practices showed that we should follow this calculations.</span></div>
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<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 512 MB RAM can support approximately 5-15 concurrent calls</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 1 GB can support approximately 15-25 concurrent calls</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 2 GB can support approximately 25-50 concurrent calls</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 4 GB can support approximately 50-100 concurrent calls</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 8 GB can support approximately 100-175 concurrent calls</span></li>
<li><span style="font-family: Georgia, 'Times New Roman', serif; font-size: 18px; line-height: 28px;">Server with 16 GB can support approximately 175+ concurrent calls</span></li>
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<span style="font-family: Georgia, Times New Roman, serif;">Next, we must make sure that our fully qualified domain name is properly set in our hosts file and make sure that the server time setting match the appropriate time zone that server belongs to. The last step before we actually start with the installation is to update our currently installed packages from the standard <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS </a>repositories:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># yum update
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<span style="font-family: Georgia, Times New Roman, serif;">Now, we are ready to start the deployment. We will use installation script that we need to download. The script will download some file during the installation, so we will use <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">/tmp</code> folder during the installations.</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cd /tmp
# wget http://upgrades.freepbxdistro.org/blank-centos-installer/5.211.65-track/5.211.65-1-Installer-Script.sh
# /tmp/4.211.64-1-Installer-Script.sh
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Once it is finished, we will have fully functional IP-PBX server, based on the FreePBX Distribution. Now, we need to test if our GUI works. To do that, we will open our browser and point to the fully qualified name or the IP of our newly installed PBX, we will be presented with FreePBX administrator-account setup screen. We should setup our admin account using the GUI. That will be the information that we will use later for managing the server through the GUI.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;">If we want to upgrade out FreePBX system later, we can search for available upgrades, download the upgrade script and execute it, similar to the installation process. First, we need to determine which our current version is:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cat /etc/schmooze/pbx-version
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<span style="font-family: Georgia, Times New Roman, serif;">Then, we can check the change list for the new version that is available and make decision whether we would like to upgrade or not. The upgrade process work same as the installation. The upgrade script might ask us for some additional information or confirmation. Once the upgrade is done we can check and confirm that our system is upgraded but executing:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cat /etc/schmooze/pbx-version
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">If there is more than one upgrade script available, we should execute every upgrade script, one by one, is sequential order and save every script in the same folder. This Asterisk and OpenPBX server are part of a very wide field and there are a lot of additional things to be considered and explored. However, this tutorial underlines the very basic information and steps that are required in order to get our own PBX system up and running.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;"><a href="http://hackthesec.co.in/" target="_blank">hackthesec.co.in</a><br /><a href="http://hackthesec.co.in/" target="_blank">hackthesec</a></span></div>
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How To Install FreePBX on CentOS

Install FreePBX on CentOS PBX (stands for private branch exchange) is a private telephone network used that can be very easily connecte...

How to add extra swap space on CentOS 6.X

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<h1 class="entry-title" itemprop="headline" style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 39px; font-weight: 500; line-height: 1.1; margin: 21px 0px 0px;">
<u><span style="color: #cc0000;"><i>Add extra swap space on CentOS 6</i></span></u></h1>
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<span style="font-family: Georgia, Times New Roman, serif;">In <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS 6</a> swap space or simply swap is something that is used by the operating system when the system requires more memory that the physical memory installed on the server. In that case, the operating system is using parts from the hard drives as if they were physical memory.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;">This sounds very good, but the only downside of this is that the hard drives are significantly slower than the RAM memory, so this will decrease the server performance in general. However, having enough memory available is very important for our server to be stable and run smooth so we should always have swap space available on our <a href="http://www.hackthesec.co.in/search/label/Linux" target="_blank">Linux server</a>.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvEtcfVC9fMunMiogW1lsdzjqDfRqWAo1enWZwC59mjf2a9nE0dHKC_1qe7QnLfkuGcGNZHnTq3_7jM288HkH_gliA4VlM_73KYJg2eI_qUCTevkQYhV8u9LtDXjyPJx8WkhsW7EoZMEIq/s1600/swap__tw_www.hackthesec.co.in.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjvEtcfVC9fMunMiogW1lsdzjqDfRqWAo1enWZwC59mjf2a9nE0dHKC_1qe7QnLfkuGcGNZHnTq3_7jM288HkH_gliA4VlM_73KYJg2eI_qUCTevkQYhV8u9LtDXjyPJx8WkhsW7EoZMEIq/s1600/swap__tw_www.hackthesec.co.in.jpg" /></a></div>
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<span style="font-family: Georgia, Times New Roman, serif;">Before we add more SWAP space, we need to create the swap file. We will use the <span style="color: red;"><b><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">dd</code> </b></span>command to create the swap file. <span style="color: red;"><b><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">dd</code> </b></span>is built in command in <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS </a>whose primary purpose is to convert and copy a file .</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;">In this case <span style="color: red;"><b><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">if</code> </b></span>(input file) is <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;"><b>/dev/zero</b></span></code> and <span style="color: red;"><b><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">of</code> </b></span>(output file) is the destination where we want to save the file. Basically, we are going to create 1GB file that will consist of zeros only and use that as a swap later.</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># dd if=/dev/zero of=/swapfile bs=1M count=1024
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<span style="font-family: Georgia, Times New Roman, serif;">Next, we need to set up file so it is can be used as swap space. We will use <span style="color: red;"><b><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">mkswap</code> </b></span>command for that:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># mkswap /swapfile
</span></code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">The swap file must be owned by root and have proper permissions:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">#chown root:root /swapfile
#chmod 0600 /swapfile</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Once this is done, the only thing left is to activate and start using the swap space.</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># swapon /swapfile
</span></code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">That’s it. We got another 1GB of swap space. If we wont to keep the space active after system reboot, we need to add an entry into <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;"><b>/etc/fstab</b></span></code> file. Open <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;"><b>/etc/fstab</b></span></code> file using your favorite text editor and add the following entry:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">/swapfile swap swap defaults 0 0
</span></code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Save and close the file. Next time Linux comes up after reboot, it enables the new swap file for you automatically.</span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">We can verify that the swap was added by executing the command, the output should look like the following:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># free -m
             total       used       free     shared    buffers     cached
Mem:          2026        990       1036          0        129        620
-/+ buffers/cache:        240       1786
Swap:         1024          0       1024</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">In order to determine how often swap file is used (compared to the RAM usage) system uses system property that is called swappiness. Swappiness is a property of the Linux kernel that changes the balance between swapping out runtime memory, as opposed to dropping pages from the system page cache. Swappiness can be set to values between 0 and 100 inclusive.</span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">A low value means the kernel will try to avoid swapping as much as possible where a higher value instead will make the kernel aggressively try to use swap space. The default value is 60. We can set the swappiness with the following command:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">sysctl vm.swappiness=10
</span></code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Now you have swap file on your system, which means you have more memory for the system to work with. This will make your system more stable at the cost of HDD space used by the swap file. </span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;"><a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></span></div>
</div>
</div>

How to add extra swap space on CentOS 6.X

Add extra swap space on CentOS 6 In CentOS 6 swap space or simply swap is something that is used by the operating system when the syst...

How to Use Prometheus to Monitor Your CentOS 7 Server

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<h1 class="entry-title" itemprop="headline" style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 39px; font-weight: 500; line-height: 1.1; margin: 21px 0px 0px;">
<u><i><span style="color: red;">Prometheus to Monitor Your <a href="http://www.hackthesec.co.in/search/label/Centos" target="_blank">CentOS</a> 7 Server</span></i></u></h1>
<div>
<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;">Prometheus is an open source monitoring system and time series database. It addresses many aspects of monitoring such as the generation and collection of metrics, graphing the resulting data on dashboards, and alerting on anomalies. The main features of Prometheus is that its a multi-dimensional data model with </span></span><br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGm_iPrVY0V0R8hNZEJkrqwvOZ9KCN3R_YQuopph7-iJTWkZZyevL9J8xRHPMPNgAlzpuJkJ8K7FiL3rOooZDVtDC4Fx-G_tIjiANYFbTLd-DA5ltQsVnL1maXvD4HM9sWLMb8I36CwgnH/s1600/prometheus-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGm_iPrVY0V0R8hNZEJkrqwvOZ9KCN3R_YQuopph7-iJTWkZZyevL9J8xRHPMPNgAlzpuJkJ8K7FiL3rOooZDVtDC4Fx-G_tIjiANYFbTLd-DA5ltQsVnL1maXvD4HM9sWLMb8I36CwgnH/s1600/prometheus-www.hackthesec.co.in.png" /></a></div>
<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span></span>
<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;">a flexible query language to leverage this dimensionality. So, this will allow you to not only easily fine tune the definitions of the Prometheus metrics, but also generate more accurate reports. The Prometheus ecosystem consists of multiple components that are are written in Go language, making them easy to build and deploy as static binaries.</span></span></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><u><span style="color: #0b5394;">System Update</span></u></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Connect to the<a href="http://www.hackthesec.co.in/search/label/centos7" target="_blank"> CentOS 7</a> base operating system using the non-root sudo user and run the command as shown below to update your server with the latest updates and missing patches.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ sudo yum update</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Make sure that you have sufficient disk space to install the update, then type ‘y’ and hit ‘Enter’ to continue.</span></span></div>
<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Downloading Prometheus</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Once your server is ready with all of the updates, proceed to the installation setup of Prometheus. To do so, first we will download its latest available package on Github. We will be using the ‘Curl’ command to download Pometheus in a newly created directory using the following commands.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ mkdir backup</span>
<span style="box-sizing: border-box;">$ cd backup</span>
<span style="box-sizing: border-box;">$ curl -LO "https://github.com/prometheus/prometheus/releases/download/0.17.0/prometheus-0.17.0.linux-amd64.tar.gz"
$ mv </span><span style="line-height: 1.42857;">prometheus-0.17.0.linux-amd64.tar.gz </span><span style="font-family: "menlo" , "monaco" , "consolas" , "courier new" , monospace; line-height: 1.42857;">prometheus-0.17.0rc1.linux-amd64.tar.gz</span></pre>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><u><span style="color: #0b5394;">Prometheus Installation</span></u></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">We will be creating a new directory to install Prometheus into as it would be best practise to keep all the components of Prometheus within one parent directory. So, run the commands below to create a new directory in the home directory of your current user and extract the Prometheus package on it.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ mkdir ~/Prometheus</span>
<span style="box-sizing: border-box;">$ cd ~/Prometheus</span>
<span style="box-sizing: border-box;">$ tar -zxvf ~/backup/prometheus-0.17.0rc1.linux-amd64.tar.gz</span></pre>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Now run the following command to verify the installation and check the version of ‘Prometheus’ and ‘Go’ installers.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ ~/Prometheus/prometheus-0.17.0rc1.linux-amd64/prometheus -version</span></pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrbvvduUTHv4bltLksI3Sws_8D4bvpWSewgUse7rp9SHu6o-1BONKj-6qVhK6i0qeTHzAxtEfKriW-Gu3ZrSBZ_TfHZ3-CYRObPCdJfLz0OV6gaEES-NHhPLwMybR6Tf5-jtjYAXTgAMcV/s1600/prometheus-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrbvvduUTHv4bltLksI3Sws_8D4bvpWSewgUse7rp9SHu6o-1BONKj-6qVhK6i0qeTHzAxtEfKriW-Gu3ZrSBZ_TfHZ3-CYRObPCdJfLz0OV6gaEES-NHhPLwMybR6Tf5-jtjYAXTgAMcV/s1600/prometheus-www.hackthesec.co.in.png" /></a></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Installation of Node Exporter</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Node Exporter is actually the Prometheus exporter for machine metrics, written in Go with pluggable metric collectors that exports a lot of metrics such as disk I/O statistics, memory usage, network statistics, CPU load and much more in a format that Prometheus recognizes.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">The installation package for Node Exporter is also available on Github that can be downloaded from the Prometheus Node Exporter releases. Copy the Source link address to download the package using the ‘Curl’ command.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ cd ~/backup/</span>
<span style="box-sizing: border-box;">$ curl -LO "https://github.com/prometheus/node_exporter/releases/download/0.12.0rc3/node_exporter-0.12.0rc3.linux-amd64.tar.gz"</span></pre>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Then extract this using the ‘tar’ command in a new directory ‘node_exporter’ under Prometheus using the following commands.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ mkdir ~/Prometheus/node_exporter</span>
<span style="box-sizing: border-box;">$ cd ~/Prometheus/node_exporter/</span>
<span style="box-sizing: border-box;">$ tar -zxvf ~/backup/node_exporter-0.12.0rc3.linux-amd64.tar.gz </span></pre>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Starting Node Exporter</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Execute the node_exporter within the same directory where extracted, to run its service as shown below.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ ./node_exporter</span></pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZT3n2ByVXThBwMcJ7PydocV5yuExx77DY1sbQ_lpEee97q1BKGiSFFhQiUtfHNHjuMd1dcSfGIoOryKHbcL8VQ5EH90i729HLA-D_tCer-LbbUlVh-k_A1dSMo37RdKBgi_tR98zNMU5Z/s1600/node_exporter-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZT3n2ByVXThBwMcJ7PydocV5yuExx77DY1sbQ_lpEee97q1BKGiSFFhQiUtfHNHjuMd1dcSfGIoOryKHbcL8VQ5EH90i729HLA-D_tCer-LbbUlVh-k_A1dSMo37RdKBgi_tR98zNMU5Z/s1600/node_exporter-www.hackthesec.co.in.png" /></a></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Node Exporter As a Service</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Node Exporter has been placed under the home directory of our sudo user in ‘~/Prometheus/node_exporter’ directory. Now we are going to configure it as a service so that we can easily start and stop Node Exporter service when required.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ sudo vim /etc/systemd/system/node_exporter.service</span>
<code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">[Unit]
Description=Node Exporter</code>

[Service]
User=vxx
ExecStart=/home/vxx/Prometheus/node_exporter/node_exporter

[Install]
WantedBy=default.target</pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Then start the service after reloading daemon or reboot the server.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ sudo systemctl daemon-reload</span>
<span style="box-sizing: border-box;">$ sudo systemctl enable node_exporter.service</span>
<span style="box-sizing: border-box;">$ sudo systemctl start node_exporter.service</span>
<span style="box-sizing: border-box;">$ sudo systemctl status node_exporter.service</span></pre>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Once the node_exporter service is running, open your browser to view Node Exporter’s web interface by following the link below.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;">http://your_servers_ip:9100/metrics</pre>
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<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiATFaLfqGL-mjKMhH4LtDIxvESJAiww29_E3cvfyY24BcMY1_kVsB8Fly-d7RfbtQl_7D8VNV7xOlFIPxDhZUQ7WkGiNEg9svkYwb09dvo2CyAywUZuioH2sADL1JxKNNe9CjmDznxFCZB/s1600/prometheus_node-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiATFaLfqGL-mjKMhH4LtDIxvESJAiww29_E3cvfyY24BcMY1_kVsB8Fly-d7RfbtQl_7D8VNV7xOlFIPxDhZUQ7WkGiNEg9svkYwb09dvo2CyAywUZuioH2sADL1JxKNNe9CjmDznxFCZB/s1600/prometheus_node-www.hackthesec.co.in.png" /></a></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Starting Prometheus Server</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">We are now ready to start the Prometheus server by creating a new configuration file in the Prometheus directory with the following code in it.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ cd ~/Prometheus/prometheus-0.17.0rc1.linux-amd64/</span>
<span style="box-sizing: border-box;">$ vim prometheus.yml
</span>

<code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">global:
  scrape_interval:     15s # By default, scrape targets every 15 seconds.

# Attach these labels to any time series or alerts when communicating with
  # external systems (federation, remote storage, Alertmanager).
  external_labels:
    monitor: 'codelab-monitor'

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'prometheus'

# Override the global default and scrape targets from this job every 5 seconds.
    scrape_interval: 5s

target_groups:
      - targets: ['localhost:9090']</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Close after making saving the changes using ‘:wq!’.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">These configurations will create the ‘scrape_configs’ and a ‘job_name’ as ‘node’ that can be any name you wish. Then start the Prometheus server as a background process and redirect it to output the log files using the following command.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ nohup ./prometheus > prometheus.log 2>&1 &</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">To view these logs you can use the command below.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ tail ~/Prometheus/prometheus-0.17.0rc1.linux-amd64/prometheus.log</span></pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKib_5iF5oZEsR3x4zZ0nwB5RNfHXsg6khyIvtmoks266hMW_xT8shsHN-c65X35SoqtKE8CudGUM2VfzNr5I_T-p6C-ETHk6niAmqhqFVZ01x-vd02ypISmODMHE5CQe-10soo94wfjnD/s1600/prometheus-log-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKib_5iF5oZEsR3x4zZ0nwB5RNfHXsg6khyIvtmoks266hMW_xT8shsHN-c65X35SoqtKE8CudGUM2VfzNr5I_T-p6C-ETHk6niAmqhqFVZ01x-vd02ypISmODMHE5CQe-10soo94wfjnD/s1600/prometheus-log-www.hackthesec.co.in.png" /></a></div>
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<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span></span></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><u><span style="color: #0b5394;">Prometheus Web Access</span></u></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Now open your favourite web browser to access the Prometheus web console using your server’s IP address or FQDN as shown below.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;">http://your_servers_ip:9090</pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-ONV-ubkqGpPlY8NBux7jYLvndQ29Bl5TbB8W-2ldPRImVAR8LZ7gWRejbinOSUcKYTDTFV4biKg4bAy_GzVgOdR5rLLo6Sw4n8JX9R5Mq0TyV9rqIDEksf0F3HCoXHYL6KUbIm85Vi3k/s1600/prometheus_dashboard.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi-ONV-ubkqGpPlY8NBux7jYLvndQ29Bl5TbB8W-2ldPRImVAR8LZ7gWRejbinOSUcKYTDTFV4biKg4bAy_GzVgOdR5rLLo6Sw4n8JX9R5Mq0TyV9rqIDEksf0F3HCoXHYL6KUbIm85Vi3k/s1600/prometheus_dashboard.png" /></a></div>
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<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;">To make sure that the Prometheus server is fetching the data from the Node Exporter, click on the Graph and insert any metric chosen from the drop down, then click on the ‘Execute’ button to see the graph as shown below.</span></span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPDYRS-XOipLNLQbGcSuofUXanvWQ34hoZ0kmbjP97LIKoupkFAQQCl-zH5fX9_94EV2nLCesv6i11q43kO3m4xG1fVdeU4frtQtUpzvV-1vnykWmMMe6ymGrrUfJvpHRbGe4V2Yd96l-F/s1600/prometheus_node_exporter-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPDYRS-XOipLNLQbGcSuofUXanvWQ34hoZ0kmbjP97LIKoupkFAQQCl-zH5fX9_94EV2nLCesv6i11q43kO3m4xG1fVdeU4frtQtUpzvV-1vnykWmMMe6ymGrrUfJvpHRbGe4V2Yd96l-F/s1600/prometheus_node_exporter-www.hackthesec.co.in.png" /></a></div>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">You can view the most commonly used metrics from the console templates that are available under the following path.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ ls ~/Prometheus/prometheus-0.17.0rc1.linux-amd64/consoles</span></pre>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;">http://yourservers_ip:9090/consoles/node.html</pre>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjY4YCQHBtgeLqw5YS2Dz7kuI8MGgin02wblGChpbqRfKlod5AIz36FkB8Rs9Tn1xa230KU_Y04tW-BYw5m9K2Fkn6H5enB5I61KSXivNPC8GMvxLqnr1ksMgGwEQSMvTlZzEUZiK8s0nAG/s1600/prometheus_overview-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjY4YCQHBtgeLqw5YS2Dz7kuI8MGgin02wblGChpbqRfKlod5AIz36FkB8Rs9Tn1xa230KU_Y04tW-BYw5m9K2Fkn6H5enB5I61KSXivNPC8GMvxLqnr1ksMgGwEQSMvTlZzEUZiK8s0nAG/s1600/prometheus_overview-www.hackthesec.co.in.png" /></a></div>
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<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span></span></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><u><span style="color: #0b5394;">PromDash Installation</span></u></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">PromDash is a tool that allows to create custom dashboards which are not only highly configurable but also better-looking. It is generally used for debugging purposes or to run one-off queries.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">So this is the preferred way to visualize the data in Prometheus’ time-series database by using PromDash.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">To download and run PromoDash, you need to install some of its required packages like Git, Ruby and a few build tools by executing the following ‘Yum’ command.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ sudo yum install git ruby ruby-devel gcc gcc-c++ sqlite-devel zlib-devel patch automake</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Type ‘y’ and hit Enter key to proceed with the installation including its dependent packages. Once the installation is completed run the command below to clone git repository of the PromoDash package.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ git clone https://github.com/prometheus/promdash.git</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Now run the command below to install the Gem know as bundler required by PromoDash for installing the Ruby gems.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ cd promdash/</span>
<span style="box-sizing: border-box;">$ gem install bundler</span></pre>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Then run the ‘Bundle’ command to install all the Ruby gems that PromDash requires. The installation process might take some time to complete and you will get the following output after installation.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ bundle install --without mysql postgresql</span></pre>
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<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span></span></div>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Setup the Rail Environment</u></span></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">PromDash uses an environment variable called the ‘DATABASE_URL’ to determine the name of the the database associated with it. In the database directory, we will provide the Database server what it is going to use here followed by the command to setup the RAIL environment for production use and redirect it out to the ‘Bashrc’ file.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Let’s run the following commands to configure the Rails Environment as shown.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ mkdir ~/Prometheus/databases</span>
<span style="box-sizing: border-box;">$ echo "export DATABASE_URL=sqlite3:$HOME/Prometheus/databases/mydb.sqlite3" >> ~/.bashrc</span>
<span style="box-sizing: border-box;">$ echo "export RAILS_ENV=production" >> ~/.bashrc</span>
<span style="box-sizing: border-box;">$ . ~/.bashrc</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">After updating the Bashrc file run the following command with ‘rake’ tool to create PromDash’s tables in the SQLite3 database.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ rake db:migrate</span></pre>
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<span style="background-color: #fdfdfd; font-size: 18px; line-height: 28px;"><span style="font-family: "georgia" , "times new roman" , serif;"><br /></span></span></div>
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Run the command below to recompile PromDash project because it uses the Rails Asset Pipeline, so all the assets including Javascript files, CSS files and images should be recompiled using the rake tool command as shown.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ rake assets:precompile</span></pre>
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<h2 style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 32px; font-weight: 500; line-height: 1.1; margin-bottom: 10.5px; margin-top: 21px;">
<span style="box-sizing: border-box;"><u><span style="color: #0b5394;">Starting PromoDash</span></u></span></h2>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Run the following command to start the PromoDash server’s service under Thin (a light weight server) .</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><span style="box-sizing: border-box;">$ bundle exec thin start -d</span></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="box-sizing: border-box;"><span style="font-family: "georgia" , "times new roman" , serif;">Then open your web browser to access the PromoDash web console using the following link.</span></span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;">http://your_servers_ip:3000/</pre>
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How to Use Prometheus to Monitor Your CentOS 7 Server

Prometheus to Monitor Your CentOS 7 Server Prometheus is an open source monitoring system and time series database. It addresses many a...

How To Install and Use EasyEngine (ee) on Ubuntu

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<h1 class="entry-title" itemprop="headline" style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 39px; font-weight: 500; line-height: 1.1; margin: 21px 0px 0px;">
<u><span style="color: red;">Install and Use EasyEngine (ee) on Ubuntu</span></u></h1>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;">EasyEngine (ee) is a <a href="http://www.hackthesec.co.in/search/label/Linux" target="_blank">linux </a>shell-script collection, which makes managing your WordPress and Nginx sites on an Ubuntu server easy and fun. EasyEngine makes it very easy to manage Nginx and we will no longer need to recall complex commands or depend on system administrators. As an interface for Nginx, EasyEngine is known to perform better and faster than Apache, particularly when the number of concurrent site visitors is on the rise.</span></div>
<div class="separator" style="clear: both; text-align: center;">
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<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;">Easy Engine would work on any <a href="http://www.hackthesec.co.in/search/label/Debian" target="_blank">Debian-based</a> distribution, but for these tutorial we are using Ubuntu. Most of the official tests are also done on Ubuntu. In order to install it our <a href="http://www.hackthesec.co.in/search/label/Ubuntu" target="_blank">Ubuntu server</a>, we need to have full root access. Installation process consists of several commands and it is actually pretty simple and straight forward:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># curl -sL rt.cx/ee | sudo bash
# ee system install</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;">The first command will install easy engine, and the second command will install all other required packages. EE will always install the latest stable version of the packages (Latest PHP, MySQL, etc.) During the installation we will get few prompts where we need to answer “yes” in order for the installation to complete. Once we have it installed, we can create new wordpress with the command:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># ee site create our-domain.com --wp
</span></code></pre>
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<span style="font-family: Courier New, Courier, monospace;">This will create and install fresh and clean WordPress installation that will be accessible at http://our-domain.com. EasyEngine supports several types of WordPress websites as well as non WordPress websites. Here is a list of all websites and commands to create them:</span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Standard WordPress Sites</u></span></strong></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">ee site create example.com --wp     # install wordpress without any page caching
ee site create example.com --w3tc     # install wordpress with w3-total-cache plugin
ee site create example.com --wpsc     # install wordpress with wp-super-cache plugin
ee site create example.com --wpfc     # install wordpress + nginx fastcgi_cache</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Multisite WordPress with sub-directory</u></span></strong></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">ee site create example.com --wpsubdir     # install wpmu-subdirectory without any page caching
ee site create example.com --wpsubdir --w3tc     # install wpmu-subdirectory with w3-total-cache plugin
ee site create example.com --wpsubdir --wpsc     # install wpmu-subdirectory with wp-super-cache plugin
ee site create example.com --wpsubdir --wpfc     # install wpmu-subdirectory + nginx fastcgi_cache</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Multisite WordPress with sub-domain</u></span></strong></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">ee site create example.com --wpsubdom     # install wpmu-subdomain without any page caching
ee site create example.com --wpsubdom --w3tc     # install wpmu-subdomain with w3-total-cache plugin
ee site create example.com --wpsubdom --wpsc     # install wpmu-subdomain with wp-super-cache plugin
ee site create example.com --wpsubdom --wpfc     # install wpmu-subdomain + nginx fastcgi_cache</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<strong style="box-sizing: border-box;"><span style="color: #0b5394;"><u>Standard Website</u></span></strong></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;">ee site create example.com --html           # create example.com for static/html sites
ee site create example.com --php      # create example.com with php support
ee site create example.com --mysql      # create example.com with php & mysql support</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;"><span style="color: #333333;">Different configuration options for EasyEngine can be set in the </span><code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/etc/easyengine/ee.conf</span></code><span style="color: #333333;"> file. We can choose to use remote MySQL host, set basic HTTP authentication, default username and password for new wordpress installations, etc. All we have to do is open the file and using our favorite text editor and do the changes. The file is very well documented.</span></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; color: #333333; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;">Upgrading easy engine is the latest version is also very easy. If we are upgrading from easyengine 1.0 to 1.1 and above, we should use the command:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; padding: 0px; white-space: pre-wrap;"><span style="font-size: large;"># /bin/bash

If we are upgrading from version 1.1 and above we should use the command

# ee update</span></code><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Courier New, Courier, monospace;">This concludes the easy part, installation and configuration. According to EasyEngine created, the hardest part is the create WordPress page with high traffic and heavy enough to crash it. So, you can give it a try on your VPS.</span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
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How To Install and Use EasyEngine (ee) on Ubuntu

Install and Use EasyEngine (ee) on Ubuntu EasyEngine (ee) is a linux shell-script collection, which makes managing your WordPress and Ng...

How to host multiple Ghost instances on a single server

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<h1 class="entry-title" itemprop="headline" style="background-color: #fdfdfd; box-sizing: border-box; font-family: proxima-nova, 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 39px; line-height: 1.1; margin: 21px 0px 0px;">
<u><i><span style="color: red;">Multiple Ghost instances on a single server</span></i></u></h1>
<div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Ghost is great and simple to use blogging platform, with clean and easy to use interface, having just the options that every user need in order to create and maintain their blog. In this tutorial we will discuss how to have more ghost instance on a single <a href="http://www.hackthesec.co.in/search/label/Ubuntu" target="_blank">Ubuntu server</a>, each of them completely independent having its own content and specific settings. We are assuming that we already have one ghost single instance properly running for our domain <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">my-first-blog.com</code> using Nginx as web server.</span></div>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitYPBoJ9QmVjeIte7pihA9IARKjiBorS5MpyZ4QiWQwmJ5HGrC15LKBtE1KqFKjU64tJLPR_X3php-s_du1O8Gnyv5bN5TsgFYgQ6ipsFVTROdPnxibuYOWzXDGPhUjZXMx51JcWHZXJel/s1600/How-to-host-multiple-Ghost-instances-on-a-single-server-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEitYPBoJ9QmVjeIte7pihA9IARKjiBorS5MpyZ4QiWQwmJ5HGrC15LKBtE1KqFKjU64tJLPR_X3php-s_du1O8Gnyv5bN5TsgFYgQ6ipsFVTROdPnxibuYOWzXDGPhUjZXMx51JcWHZXJel/s1600/How-to-host-multiple-Ghost-instances-on-a-single-server-www.hackthesec.co.in.png" /></a></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;"><br /></span></div>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Before we proceed to add our second ghost instance, it is better if we stop the related servers that are running:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># service ghost stop
# service nginx stop
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Now that we have the services stopped, first we need to modify nginx configuration. While having one instance, we were using on default nginx configuration file for our website. Now, we must have separate configuration file for every ghost instance that we are going to host on our server. We change to nginx configuration folder and execute the following commands:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cd /etc/nginx/sites-enabled
# mv default my-first-blog.com
# cp my-first-blog.com my-second-blog.com
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Now, we need to open both files using our favorite editor and edit the server_name directive to match our domain name. For the first file, we should have:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">server_name my-first-blog.com
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Similar, in the second file, we should have:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">server_name my-second-blog.com
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Another parameter that we need to change is the port on which nginx connects to ghost. By default, when we have one instance, all traffic is sent to one port. We can use any port number higher than 1024 that is currently not in use. Let’s pick the first one, 1025, open <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">my-second-blog.com</code> configuration file in our favorite editor and change to port parameter as follows:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">proxy_pass http://localhost:1025
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">We are done with nginx configuration modification, so we can start Nginx</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># service nginx start
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Now, we need to configure ghost. First, we need to go to the <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;">/var/www</code> directory and create separate folder for each Ghost instance:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cd /var/www/
# mkdir my-first-blog.com
# mkdir my-second-blog.com
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Then, we need to copy the content of the ghost directory in each of the newly created folders:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># cp -r ghost my-first-blog.com
# cp -r ghost my-second-blog.com
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Next, we need to locate <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">config.js</span></code> file which is inside <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">ghost/</span></code> directory. For the first site, file location is<code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/var/www/my-first-blog.com/ghost/config.js</span></code> and we need to change the URL parameter only, so it looks as follows:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">production: {
    url: 'http://my-first-blog.com'
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">For the second blog, file location is <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/var/www/my-second-blog.com/ghost/config.js</span></code> and we need to change the URL and port parameter as well, so it looks as follows:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">production: {
    url: 'http://my-second-blog.com'
...
    port: '1025'
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">Now we are done with the configuration. We need to create a way to easy start/stop each Ghost instance. In order to do that, we will create separate file inside <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/etc/init</span></code> directory for each instance. For example, for our first blog, we will have the file <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/etc/init/ghost-my-first-blog.conf</span></code> with the following content:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">start on startup

script
    cd /var/www/my-first-blog.com/ghost
    npm start --production
end script
</code></pre>
<div style="background-color: #fdfdfd; box-sizing: border-box; font-size: 18px; line-height: 28px; margin-bottom: 10.5px;">
<span style="font-family: Georgia, Times New Roman, serif;">Similar, for the second file, we will have the file <code style="background-color: #f9f2f4; border-radius: 4px; box-sizing: border-box; font-size: 16.2px; padding: 2px 4px;"><span style="color: red;">/etc/init/ghost-my-second-blog.conf</span></code> with the following content:</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;">start on startup

script
    cd /var/www/my-second-blog.com/ghost
    npm start --production
end script
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">After this is saved, we can start the blogs with</span></div>
<pre style="background-color: whitesmoke; border-radius: 4px; border: 1px solid rgb(204, 204, 204); box-sizing: border-box; color: #333333; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: 14px; line-height: 1.42857; margin-bottom: 10.5px; overflow: auto; padding: 10px; word-break: break-all; word-wrap: break-word;"><code style="background-color: transparent; border-radius: 0px; box-sizing: border-box; color: inherit; font-family: Menlo, Monaco, Consolas, 'Courier New', monospace; font-size: inherit; padding: 0px; white-space: pre-wrap;"># service ghost-my-first-blog start
# service ghost-my-second-blog start
</code></pre>
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<span style="font-family: Georgia, Times New Roman, serif;">As long as we are using different port number, we can repeat this procedure as many times as we need and have multiple blog instances hosted on our server.</span></div>
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<span style="font-family: Georgia, Times New Roman, serif;"><a href="http://www.hackthesec.co.in/">www.hackthesec.co.in</a></span></div>
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How to host multiple Ghost instances on a single server

Multiple Ghost instances on a single server Ghost is great and simple to use blogging platform, with clean and easy to use interface, h...