Hack The Sec-Leading Resource Of Linux Tutorial: openstack

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<span style="color: #990000; font-size: large;"><u style="font-weight: normal;"><i>OpenStack (Liberty) Installation Steps on CentOS 7/RHEL7</i></u></span></h1>
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OpenStack is a Cloud Software that manage large pool of compute (hypervisors), storage ( block & swift ) and network resources of a data center. It provides a Dashboard where admins can create and manage Projects (Tenants ) and give appropriate access to the project members , further on Project members can create VMs (Virtual Machine).</div>
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In this article we will install latest version of OpenStack ‘<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">Liberty’</span> on <a href="http://www.hackthesec.co.in/search/label/Centos">CentOS</a> 7 using <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">rdo repositories</span>. As per my setup i am using followings on my <a href="http://www.hackthesec.co.in/search/label/Centos">CentOS</a> 7 Machine</div>
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<li style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; list-style: square; margin: 0px; padding: 0px; vertical-align: baseline;"><b>Hostname = openstack.example.com</b></li>
<li style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; list-style: square; margin: 0px; padding: 0px; vertical-align: baseline;"><b>IP address = 192.168.1.3</b></li>
<li style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; list-style: square; margin: 0px; padding: 0px; vertical-align: baseline;"><b>netmask = 255.255.255.0</b></li>
<li style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; list-style: square; margin: 0px; padding: 0px; vertical-align: baseline;"><b>Gateway = 192.168.1.1</b></li>
<li style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; list-style: square; margin: 0px; padding: 0px; vertical-align: baseline;"><b>DNS = 192.168.1.254</b></li>
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:1 Set the hostname.</span></span></h4>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "trebuchet ms" , sans-serif;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">hostnamectl</span><span style="color: white;"> set-hostname "openstack.example.com"</span></span></pre>
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:2 Set the Selinux in Permissive Mode</span></span></h4>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@localhost ~]# </span><span style="color: lime;">setenforce</span><span style="color: white;"> 0</span></span></pre>
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Edit the selinux config file ( <span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: red;">/etc/sysconfig/selinux</span></span> ) and set “<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: red;">SELINUX=permissive</span></span>”</div>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@localhost ~]# grep permissive /etc/sysconfig/selinux
</span><span style="color: lime;">SELINUX=permissive</span><span style="color: white;">
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:3 Disable firewalld & NetworkManager Service</span></span></h4>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@openstack ~]# </span><span style="color: lime;">systemctl stop firewalld</span><span style="color: white;">
[root@openstack ~]# systemctl disable firewalld
Removed symlink /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service.
</span><span style="color: lime;">Removed symlink /etc/systemd/system/basic.target.wants/firewalld.service.
</span><span style="color: white;">[root@openstack ~]#
[root@openstack ~]# systemctl stop NetworkManager
[root@openstack ~]# systemctl disable NetworkManager
Removed symlink /etc/systemd/system/multi-user.target.wants/NetworkManager.service.
</span><span style="color: lime;">Removed symlink /etc/systemd/system/dbus-org.freedesktop.NetworkManager.service.
</span><span style="color: white;">Removed symlink /etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service.</span></span><span style="color: white; font-family: "monaco" , "courier new" , "dejavu sans mono" , "bitstream vera sans mono" , monospace; font-size: 12px;">
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:4 Enable rdo repository for liberty packages.</span></span></h4>
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Use below commands to update the system and enable rdo repository</div>
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</span><span style="color: lime;">[root@openstack ~]# yum install -y https://www.rdoproject.org/repos/rdo-release.rpm</span></span></pre>
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:5 Install OpenStack PackStack Package</span></span></h4>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@openstack ~]# yum install -y </span><span style="color: lime;">openstack-packstack</span></span></pre>
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Generate the answer file using below command.</div>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: lime;">[root@openstack ~]# packstack --gen-answer-file=/root/answer.txt
</span><span style="color: white;">Packstack changed given value to required value /root/.ssh/id_rsa.pub</span></span></pre>
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Edit the answer file <span style="color: red;">“<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">/root/answer.txt</span>”</span> , set the following parameters and leave rest of parameters as it is.</div>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "courier new" , "courier" , monospace;"><span style="color: white;"># NTP Server
CONFIG_NTP_SERVERS=<NTP_Server_IP>

# Disable Demo Version
CONFIG_PROVISION_DEMO=n

# Set KeyStone Admin Password or Admin user Password
</span><span style="color: lime;">CONFIG_KEYSTONE_ADMIN_PW=<password>
</span><span style="color: white;">
# Config Horizon over SSL
CONFIG_HORIZON_SSL=y

# Disable Nagios
</span><span style="color: lime;">CONFIG_NAGIOS_INSTALL=n</span></span></pre>
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Note : In case if you don’t have NTP server in your setup then you can leave NTP parameter as it is.</div>
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:6 Start OpenStack installation using answer file.</span></span></h4>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@openstack ~]# packstack --answer-file</span><span style="color: lime;"> /root/answer.txt</span></span></pre>
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Once the installation is completed , we will get below message.</div>
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After the installation a new interface <span style="color: red;">“<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">br-ex</span>”</span> will be created and assign the IP addess of eth0 or enp0s3 to br-ex .</div>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@openstack ~]# cd /etc/</span><span style="color: cyan;">sysconfig</span><span style="color: white;">/network-scripts/
[root@openstack network-scripts]# cp ifcfg-enp0s3 ifcfg-br-ex
[root@openstack network-scripts]# vi </span><span style="color: cyan;">ifcfg-enp0s3</span><span style="color: white;">
DEVICE=enp0s3
</span><span style="color: lime;">HWADDR="09:02:27:8E:EB:16"
</span><span style="color: white;">TYPE=OVSPort
DEVICETYPE=ovs
</span><span style="color: #cc0000;">OVS_BRIDGE=br-ex
</span><span style="color: white;">ONBOOT=yes

[root@openstack network-scripts]# </span><span style="color: lime;">vi ifcfg-br-ex</span><span style="color: white;">
DEVICE=br-ex
DEVICETYPE=ovs
TYPE=OVSBridge
</span><span style="color: lime;">BOOTPROTO=static
</span><span style="color: white;">IPADDR=192.168.1.3
NETMASK=255.255.255.0
GATEWAY=192.168.1.1
</span><span style="color: lime;">DNS1=192.168.1.254
</span><span style="color: white;">ONBOOT=yes</span></span></pre>
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In above files please change the IP details, Hardware address and Device name as per your setup.</div>
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When we restart the network service , it will add <span style="color: red;">“<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">enp0s3</span>”</span> as a port in <span style="color: red;"><span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: 600; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">br-ex OVS bridge</span>.</span></div>
<pre style="background: rgb(54, 54, 54); border-radius: 7px; border: 1px solid rgb(221, 221, 221); font-stretch: inherit; line-height: 19px; margin-bottom: 15px; margin-top: 15px; overflow-x: auto; overflow-y: hidden; padding: 18px 20px; vertical-align: baseline; white-space: pre-wrap;"><span style="font-family: "verdana" , sans-serif;"><span style="color: white;">[root@openstack network-scripts]# </span><span style="color: red;">systemctl restart</span><span style="color: white;"> network
</span></span><span style="color: white;">
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Please take a reboot and check whether settings are persistent or not.</div>
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<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; font-weight: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;"><span style="color: #0b5394;">Step:7 Now Access OpenStack Dashboard.</span></span></h4>
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When the installation is completed a dashboard link was provided on the screen , in My Case it is <span style="color: red;"><b>“<span style="border: 0px; font-family: inherit; font-size: inherit; font-stretch: inherit; font-style: inherit; font-variant: inherit; line-height: inherit; margin: 0px; padding: 0px; vertical-align: baseline;">https://192.168.1.3/dashboard”</span></b></span></div>
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