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How do I Install and Use Iptables on CentOS/RHEL 7

firewalld.service
   Loaded: masked (/dev/null)
   Active: inactive (dead) since Fri 2015-02-27 11:09:37 EST; 56s ago
 Main PID: 7411 (code=exited, status=0/SUCCESS)

Feb 27 11:02:18 svr10 systemd[1]: Started firewalld - dynamic firewall daemon.
Feb 27 11:09:36 svr10 systemd[1]: Stopping firewalld - dynamic firewall daemon...
Feb 27 11:09:37 svr10 systemd[1]: Stopped firewalld - dynamic firewall daemon.<span style="font-size: 0.9em;">
</span></pre>
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<span style="color: #0b5394;">Install Iptables Service in CentOS/RHEL 7</span></h2>
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<span style="font-family: "verdana" , sans-serif;">Now install iptables service using yum package manager using following command.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"># yum install iptables-services -y<span style="font-size: 0.9em;">
</span></pre>
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<span style="font-family: "verdana" , sans-serif;">After installing enable iptables service and start using below commands.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"># systemctl <orange style="color: orange;">enable</orange> iptables
# systemctl <orange style="color: orange;">start</orange> iptables<span style="font-size: 0.9em;">
</span></pre>
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<span style="font-family: "verdana" , sans-serif;">Now check the iptables service status using below command.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"># <orange style="color: orange;">systemctl status iptables</orange>

iptables.service - IPv4 firewall with iptables
   Loaded: loaded (/usr/lib/systemd/system/iptables.service; enabled)
   Active: <green style="color: green;">active (exited)</green> since Fri 2015-02-27 11:14:12 EST; 14s ago
  Process: 7938 ExecStart=/usr/libexec/iptables/iptables.init start (code=exited, status=0/SUCCESS)
 Main PID: 7938 (code=exited, status=0/SUCCESS)

Feb 27 11:14:12 svr10 iptables.init[7938]: iptables: Applying firewall rules: [  OK  ]
Feb 27 11:14:12 svr10 systemd[1]: Started IPv4 firewall with iptables.<span style="font-size: 0.9em;">
</span></pre>
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<span style="font-family: "verdana" , sans-serif;">To list iptables rules use following command.</span></div>
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<pre style="-webkit-text-stroke-width: 0px; background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: 1.3em; margin: 0px 0px 20px; orphans: auto; outline: 0px; overflow: auto; padding: 20px; text-align: start; text-indent: 0px; text-transform: none; vertical-align: baseline; widows: 1; word-spacing: 0px;"># <orange style="color: orange;">iptables -L</orange>

Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere             state RELATED,ESTABLISHED
ACCEPT     icmp --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere
ACCEPT     tcp  --  anywhere             anywhere             state NEW tcp dpt:ssh
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
REJECT     all  --  anywhere             anywhere             reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination<span style="font-size: 0.9em;">
</span></pre>
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How do I Install and Use Iptables on CentOS/RHEL 7

How do I Install and Use Iptables on CentOS/RHEL 7 Latest Linux operating systems like CentOS/RedHat 7 and Fedora 21 has stop using ip...

MySQL Replication in 5 Minutes

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<span style="color: #990000; font-family: "verdana" , sans-serif; font-size: x-large;">MySQL Replication in 5 Minutes</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: x-large;"><br /></span>
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Configure MySQL replication is extremely simple. This article demonstrates how to create a master in minutes replicating it for a slave. Replication is a native MySQL feature and has multiple uses, such as backup, high availability, redundancy and geographical data distribution, horizontal scalability, among others.</span></span><br />
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<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;"><br /></span></span>
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">For this simple test, we use Linux and configure replication in MySQL 5.6 between two instances: a master and a slave. We will create two instances MySQL from scratch, that is, without data. They will be on the same machine, but responding in different ports: 3310 and 3311.</span></span><br />
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;"><br /></span></span>
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">The only requirement is to have MySQL 5.6 installed.</span></span><br />
<br />
<ul style="text-align: left;">
<li><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium; line-height: 23.1000003814697px;">If you have it installed, simply use the path where resides bin/mysqld as basedir in the steps below. For example, in Oracle Linux 7 or RHEL 7 the binary is located in </span><b style="font-family: arial, helvetica, sans-serif; font-size: large; line-height: 23.1000003814697px;"><span style="color: red;">/usr/sbin/mysqld</span></b><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium; line-height: 23.1000003814697px;">, therefore</span><b style="font-family: arial, helvetica, sans-serif; font-size: large; line-height: 23.1000003814697px;"> <span style="color: red;">basedir=/usr;</span></b></li>
</ul>
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<br />
<ul style="text-align: left;">
<li><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium; line-height: 23.1000003814697px;"> If you do not have MySQL 5.6 binaries, just download the tar file and unpack it in a convenient directory that will be your basedir, such as</span><b style="font-family: arial, helvetica, sans-serif; font-size: large; line-height: 23.1000003814697px;"> <span style="color: red;">/opt/mysql/mysql-5.6</span></b><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium; line-height: 23.1000003814697px;"><span style="color: red;">:</span></span></li>
</ul>
<br />
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># mkdir /opt/mysql
# cd /opt/mysql
# wget http://dev.mysql.com/get/Downloads/MySQL-5.6/mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
# tar xvzf mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
# rm mysql-5.6.23-linux-glibc2.5-x86_64.tar.gz
# mv mysql-5.6.23-linux-glibc2.5-x86_64 mysql-5.6</span></span></pre>
<div style="background-color: white; margin-bottom: 10px;">
<span style="background-color: transparent; line-height: 18px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;">Note: In this case, consider the steps below <b><span style="color: red;">basedir=/opt/mysql/mysql-5.6;</span></b> always try to work with the latest versions — replace 5.6.23 in the above commands if a brand new one is available in <b><span style="color: red;">http://dev.mysql.com/downloads/mysql.</span></b></span></span></div>
<div style="background-color: white; margin-bottom: 10px;">
<span style="background-color: transparent;"></span><br />
<div style="font-family: arial, helvetica, sans-serif; font-size: large; font-weight: bold; line-height: 18px; margin-bottom: 10px;">
<span style="background-color: transparent;"><span style="color: #0b5394;"><u>Simple replication</u></span></span></div>
<span style="background-color: transparent;">
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Create an instance for the master:</span></span></div>
<div style="margin-bottom: 10px;">
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="line-height: 15.6000003814697px;"># mkdir /opt/mysql/master /opt/mysql/master/data /opt/mysql/master/tmp
# cd /opt/mysql/master
# nano master.cnf
[client]
port=3310
socket=/opt/mysql/master/tmp/my-master.sock
[mysql]
prompt=master>\\_
[mysqld]
server-id=10
port=3310
basedir=/usr
datadir=/opt/mysql/master/data
socket=/opt/mysql/master/tmp/my-master.sock
log-bin=master-bin.log
innodb_flush_log_at_trx_commit=1
sync_binlog=1
# chown mysql:mysql *
# /usr/bin/mysql_install_db --defaults-file=/opt/mysql/master/master.cnf --user=mysql</span></span></pre>
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</span></div>
<div style="background-color: white; margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Start and test the new instance:</span></span></div>
<div style="background-color: white; margin-bottom: 10px;">
</div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># /usr/bin/mysqld_safe --defaults-file=/opt/mysql/master/master.cnf &
# mysql --defaults-file=/opt/mysql/master/master.cnf -uroot -p
master> SHOW VARIABLES LIKE 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3310 |
+---------------+-------+</span></span></pre>
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<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.0999984741211px;">Note: To stop the MySQL process when necessary, make a clean shutdown:</span></span></div>
<div style="background-color: white; margin-bottom: 10px;">
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># mysqladmin --defaults-file=/opt/mysql/master/master.cnf -uroot –p shutdown</span></span></pre>
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.0999984741211px;">Open another terminal and create another instance to be the Slave:</span></span></div>
<div style="margin-bottom: 10px;">
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;"># mkdir /opt/mysql/slave /opt/mysql/slave/data /opt/mysql/slave/tmp
# cd /opt/mysql/slave
# nano slave.cnf
[client]
port=3311
socket=/opt/mysql/slave/tmp/my-slave.sock
[mysql]
prompt=slave>\\_
[mysqld]
server-id=11
port=3311
basedir=/usr
datadir=/opt/mysql/slave/data
socket=/opt/mysql/slave/tmp/my-slave.sock
log-bin=slave-bin.log
innodb_flush_log_at_trx_commit=1
sync_binlog=1
# chown mysql:mysql *
# /usr/bin/mysql_install_db --defaults-file=/opt/mysql/slave/slave.cnf --user=mysql
Start and test the new instance:
# /usr/bin/mysqld_safe --defaults-file=/opt/mysql/slave/slave.cnf &
# mysql --defaults-file=/opt/mysql/slave/slave.cnf -uroot -p
slave> SHOW VARIABLES LIKE 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3311 |
+---------------+-------+</span></span></pre>
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Now that we have two instances with different server-ids and log-bin enabled, create a user in the master instance so the slave can connect to it:</span></span></div>
<div style="margin-bottom: 10px;">
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;">master> CREATE USER repl_user@127.0.0.1;
master> GRANT REPLICATION SLAVE ON *.* TO repl_user@127.0.0.1 IDENTIFIED BY 'repl_user_password';</span></span></pre>
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Note: In an actual installation, the slave instance will probably be in another host — replace 127.0.0.1 with the host IP where your slave instance is.</span></span></div>
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 23.1000003814697px;">Before starting replication, check the Master status:</span></span></div>
<div style="margin-bottom: 10px;">
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;">master> SHOW MASTER STATUS \G
*************************** 1. row ***************************
File: master-bin.000003
Position: 433</span></span></pre>
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<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 18px;">Use the data status above and initiates replication on the slave:</span></span></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;">slave> CHANGE MASTER TO
MASTER_HOST=’127.0.0.1′,
MASTER_PORT=3310,
MASTER_USER=’repl_user’,
MASTER_PASSWORD=’repl_user_password’,
MASTER_LOG_FILE=’master-bin.000003′,
MASTER_LOG_POS=433;
slave> START SLAVE;</span></span></pre>
<div style="margin-bottom: 10px;">
<div style="margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium;"><span style="line-height: 18px;">Basic test</span></span><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: medium; line-height: 1.5em;">:</span></div>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;">master> CREATE DATABASE teste_repl;
master> CREATE TABLE teste_repl.simples (id INT NOT NULL PRIMARY KEY);
master> INSERT INTO teste_repl.simples VALUES (999),(1),(20),(5);
slave> SELECT * FROM teste_repl.simples;</span></span></pre>
<pre style="background-attachment: scroll; background-clip: initial; background-color: #3c3c3c; background-image: none; background-origin: initial; background-position: 0px 0px; background-repeat: repeat; background-size: initial; border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white; font-family: "verdana" , "geneva" , sans-serif;"><span style="font-size: 11.9999990463257px; line-height: 15.6000003814697px;"><b>References:</b>
http://dev.mysql.com/doc/refman/5.6/en/binary-installation.html
http://dev.mysql.com/doc/refman/5.6/en/replication-howto.html

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MySQL Replication in 5 Minutes

MySQL Replication in 5 Minutes Configure MySQL replication is extremely simple. This article demonstrates how to create a master in minut...

How to Install MariaDB 10 on CentOS 7 / RHEL 7

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<span style="color: #990000; font-size: large;">Installing MariaDB 10 on CentOS 7 / RHEL 7</span><br />
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Installing MariaDB became very easy on the latest CentOS /RHEL Linux version 7. During initial setup MariaDB has a tick in the graphical setup environment which enables MariaDB and replaces MySQL.</div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgwMo7BsU9vXIg51zHiq2lMsv2y7hRKUvaoj7vkZSOz8WWkOumvYMDMA7fZ5G7JT5EMKGHuXZiahQ3Y1KaeePAz68lb_7x-Fchyphenhyphen_GulaqeLuyepipFNiGPIFPPEy1WAazZkeHY4_Nmag9k/s1600/MariaDB_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/AVvXsEgwMo7BsU9vXIg51zHiq2lMsv2y7hRKUvaoj7vkZSOz8WWkOumvYMDMA7fZ5G7JT5EMKGHuXZiahQ3Y1KaeePAz68lb_7x-Fchyphenhyphen_GulaqeLuyepipFNiGPIFPPEy1WAazZkeHY4_Nmag9k/s1600/MariaDB_www.hackthesec.co.in.png" /></a></div>
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During installation the section</div>
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<img alt="" src="https://mariadb.com/sites/default/files/elfinder/94/Blog/centos3.png" style="border: 0px; height: 21px; margin: 10px; max-width: 100%; vertical-align: middle; width: 203px;" /></div>
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allows enabling a MariaDB server.</div>
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<img alt="" src="https://mariadb.com/sites/default/files/elfinder/94/Blog/centos2.png" style="border: 0px; height: 56px; margin: 10px; max-width: 100%; vertical-align: middle; width: 300px;" /></div>
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<br class="Apple-interchange-newline" />
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">If you prefer the command line the installation can be performed with:</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># yum install mariadb-server</span></span></pre>
<div style="background-color: white; line-height: 1.5em; margin-bottom: 10px;">
<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">MariaDB is shipped untuned and not protected with MariaDB version 5.5.35. </span></span><br />
<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">No basic optimizations in the configuration file have been set and the root user has no password. </span></span><br />
<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">An update will install the version 5.5.37. (The latest version of MariaDB October 2014 is Version 5.5.39).</span></span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">yum update</span></span></pre>
<div style="background-color: white; line-height: 1.5em; margin-bottom: 10px;">
<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">It is important to secure the server. MariaDB is shipped with a script to harden the system accordingly using a user dialog. </span></span><br />
<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">It is highly recommended to use this script before creating and populating the databases.</span></span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">mysql_secure_installation</span></span></pre>
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<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">Install the latest Version 10 is an easy step since MariaDB's repository configuration wizard <a href="https://downloads.mariadb.org/mariadb/repositories" style="text-decoration: none;"><span style="color: red;">https://downloads.mariadb.org/mariadb/repositories</span></a> has now the latest CentOS/RHEL version available.</span></div>
<div style="background-color: white; line-height: 1.5em; margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">Before installing 10.0 it is important to perform a backup and remove the existing 5.5 version</span></div>
<div style="background-color: white; line-height: 1.5em; margin-bottom: 10px;">
<span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">if you have.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">yum remove mariadb-server mariadb-libs</span></span></pre>
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<span style="font-size: large; line-height: 23.0999984741211px;">Create the repository settings using the link and follow the steps <a href="https://downloads.mariadb.org/mariadb/repositories"><span style="color: red;">MariaDB</span></a></span></div>
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<a href="https://mariadb.com/sites/default/files/elfinder/94/Blog/centos.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="480" src="https://mariadb.com/sites/default/files/elfinder/94/Blog/centos.png" width="640" /></a></div>
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<span style="font-family: "helvetica neue" , "helvetica" , "arial" , sans-serif; font-size: large; line-height: 18px;">Here is your custom MariaDB YUM repository entry for CentOS. Copy and paste it into a file</span></div>
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<span style="font-family: "helvetica neue" , "helvetica" , "arial" , sans-serif; font-size: large; line-height: 18px;">under /etc/yum.repos.d/ (we suggest naming the file MariaDB.repo or something similar).</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># MariaDB 10.0 CentOS repository list - created 2016-01-25 08:01 UTC
# http://mariadb.org/mariadb/repositories/
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.0/centos7-amd64
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1</span></span></pre>
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<span style="line-height: 18px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">After the file is in place, install MariaDB with:</span></span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">sudo yum install MariaDB-server MariaDB-client</span></span></pre>
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<span style="line-height: 23.0999984741211px;"><span style="font-family: "arial" , "helvetica" , sans-serif; font-size: large;">You are now running the latest 10.0 version!</span></span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;"><span style="color: white;"><span style="font-size: 12px; line-height: 15.6000003814697px;"># </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">/etc/init.d/mysql start
# </span></span><span style="background-color: transparent; font-size: 12px; line-height: 15.6000003814697px;"><span style="color: white;">mysql_upgrade</span></span></pre>
<ul style="text-align: left;">
<li><span style="font-size: large; line-height: 1.5em;"><a href="http://www.hackthesec.co.in/2016/01/install-mariadb-on-centos-6.html"><span style="color: red;">Install MariaDB On Centos 6</span></a></span></li>
</ul>
</div>

How to Install MariaDB 10 on CentOS 7 / RHEL 7

Installing MariaDB 10 on CentOS 7 / RHEL 7 Installing MariaDB became very easy on the latest CentOS /RHEL Linux version 7. During initi...

How To Install Symfony 3 Framework on Ubuntu, Debian & LinuxMint

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<h2 class="title single-title title20" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 28px; line-height: 38px; margin: 0px 0px 5px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<span style="color: #990000;">How To Install Symfony 3 Framework on Ubuntu, Debian & LinuxMint</span></h2>
<div>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">Symfony is a web application framework written in PHP. Its provides a set of reusable PHP components. Symfony 3 is the latest version available of this releases. Currently it is providing 30 stand-alone components for your applications.</span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQrGWnOvjBsa5KolHU3Nq2aYLgPDEutVraQ421SpCZl29FF3t5YPX46EICcU69jCEJxgj_CQwRSuamRsM8rDJ4rt80peFBnBia6T0M2oBd9L0GWH6bsTNzqsSVZZLA7ayWxTfkU2e4NQk/s1600/symfony_www.hackthesec.co.in.png" imageanchor="1" style="background-color: transparent; margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" height="220" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhQrGWnOvjBsa5KolHU3Nq2aYLgPDEutVraQ421SpCZl29FF3t5YPX46EICcU69jCEJxgj_CQwRSuamRsM8rDJ4rt80peFBnBia6T0M2oBd9L0GWH6bsTNzqsSVZZLA7ayWxTfkU2e4NQk/s640/symfony_www.hackthesec.co.in.png" width="640" /></a></div>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">This tutorial will help you to install Symfony 3 php framework on Ubuntu, Debian and LinuxMint operating systems.</span></div>
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<span style="color: #0b5394;">Step 1 – Install Apache & PHP</span></h2>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">First start with the installation of LAMP server on your system. If you have already running LAMP stack skip this step else use followings commands to set up lamp on Ubuntu system.</span></div>
<h3 class="heading2" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; color: #0379bf; font-family: 'Roboto Slab'; font-size: 20px; font-weight: bolder; line-height: 30px; margin: 0px 0px 8px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
Install PHP 5.6</h3>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ sudo apt-get install python-software-properties
$ sudo add-apt-repository ppa:ondrej/php
$ sudo apt-get update
$ sudo apt-get install -y php5.6 php5.6-intl<span style="font-size: 0.9em;">
</span></pre>
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Install Apache2</h3>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ apt-get install apache2 libapache2-mod-php5<span style="font-size: 0.9em;">
</span></pre>
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<span style="color: #0b5394;">Step 2 – Setup Symfony Installer</span></h2>
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<span style="font-family: Arial, Helvetica, sans-serif;">Symfony provides its own installer for creating new projects. Below commands will help you to setup Symfony installer on your system.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ sudo curl -LsS https://symfony.com/installer -o /usr/local/bin/symfony
$ sudo chmod a+x /usr/local/bin/symfony <span style="font-size: 0.9em;">
</span></pre>
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<span style="color: #0b5394;">Step 3 – Create New Symfony 3 Application</span></h2>
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<span style="font-family: Arial, Helvetica, sans-serif;">After successful setup of Symfony installer on your system. Let’s start with your new Symfony application. Navigate to your web document root and create a new Symfony application.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ cd /var/www
$ symfony new myproj<span style="font-size: 0.9em;">
</span></pre>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">Now change to newly created directory and check if all requirements are properly installed on your system. If everything is fine you will get following results.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ cd myproj
$ php bin/symfony_requirements

[OK]                                          
 Your system is ready to run Symfony3 projects <span style="font-size: 0.9em;">
</span></pre>
<h2 class="heading1" style="-webkit-transition: opacity 0.24s ease-in-out; background-color: white; border: 0px; font-family: 'Roboto Slab'; font-size: 24px; font-weight: bolder; line-height: 34px; margin: 45px 0px 12px; opacity: 1; outline: 0px; padding: 0px; transition: opacity 0.24s ease-in-out; vertical-align: baseline; visibility: visible;">
<span style="color: #0b5394;">Step 4 – Start Application in Development Mode</span></h2>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">Now start development with Symfony php framework and built great application’s. To view changes in browser you can start Symfony developer web server using following command. By default web server will start on port 8000.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">                                              
$ php bin/console server:run

[OK] Server running on http://127.0.0.1:8000
 // Quit the server with CONTROL-C.<span style="font-size: 0.9em;">
</span></pre>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">Now access http://localhost:8000 in web browser.</span></div>
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<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwMcFpeEm7SIhyXmmGc6sXbSEXqphc0oRh1jtFwUcCcSEVZAjQTpInxM1i1-GqdIic73tn0YK_C2TC92nN_EjzHKHsZQSB2tbqCLl0o3IKJNexLr2mF7bIS1c1F_1bDcWGUoKB0RknqTE/s1600/symfony3-install-on-linux-www.hackthesec.co.in.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="376" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwMcFpeEm7SIhyXmmGc6sXbSEXqphc0oRh1jtFwUcCcSEVZAjQTpInxM1i1-GqdIic73tn0YK_C2TC92nN_EjzHKHsZQSB2tbqCLl0o3IKJNexLr2mF7bIS1c1F_1bDcWGUoKB0RknqTE/s640/symfony3-install-on-linux-www.hackthesec.co.in.png" width="640" /></a></div>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="color: #0b5394; font-family: 'Roboto Slab'; font-size: 24px; font-weight: bolder; line-height: 34px;">Step 5 – Create Apache VirtualHost</span></div>
<div style="background-color: white; border: 0px; font-size: 16px; line-height: 28px; margin-bottom: 20px; outline: 0px; padding: 0px; vertical-align: baseline;">
<span style="font-family: Arial, Helvetica, sans-serif;">Now If you need to configure Symfony with sub domain. Create a new Apache configuration file under directory <span style="border-image-outset: initial; border-image-repeat: initial; border-image-slice: initial; border-image-source: initial; border-image-width: initial; border: 0px; font-size: inherit; font-weight: 700; margin: 0px; outline: 0px; padding: 0px; vertical-align: baseline;">/etc/apache2/sites-available/</span> and add Virtual Host for your Symfony 3 application.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ vim /etc/apache2/sites-available/symphony3.example.com.conf
</pre>
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<span style="font-family: Arial, Helvetica, sans-serif;">directory and add below content.</span></div>
<pre class="pretty" style="background: none 0px 0px repeat scroll rgb(240, 240, 240); border-left-color: rgb(116, 183, 63); border-left-width: 3px; border-radius: 5px; border-style: none none none solid; line-height: 1.5em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 8px 20px 8px 18px; vertical-align: baseline;"><VirtualHost *:80>
    ServerName symphony3.example.com
    DocumentRoot /var/www/myproj/web

<Directory /var/www/myproj/web>
        AllowOverride All
        Order Allow,Deny
        Allow from All
        <IfModule mod_rewrite.c>
            Options -MultiViews
            RewriteEngine On
            RewriteCond %{REQUEST_FILENAME} !-f
            RewriteRule ^(.*)$ app.php [QSA,L]
        </IfModule>
    </Directory>

ErrorLog /var/log/apache2/myproj_error.log
    CustomLog /var/log/apache2/myproj_access.log combined
</VirtualHost><span style="font-size: 0.9em;">

</span></pre>
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<span style="font-family: Arial, Helvetica, sans-serif;">Finally enable website and reload Apache service using below command.</span></div>
<pre style="background: none 0px 0px repeat scroll rgb(60, 60, 60); border-radius: 4px; border: 1px solid rgb(229, 229, 229); color: white; line-height: 1.3em; margin-bottom: 20px; outline: 0px; overflow: auto; padding: 20px; vertical-align: baseline;">$ sudo a2ensite symphony3.example.com
$ sudo service apache2 reload<span style="font-size: 0.9em;">
</span></pre>
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