Install MySQL 5.5.xx on Ubuntu

## MySql-5.5-installation guide.md

      
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              MySql-5.5-installation guide.md
            
          
    MySQL Download URL
https://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.56-linux-glibc2.5-x86_64.tar.gz

Open the terminal and follow along:

Uninstall any existing version of MySQL

sudo rm /var/lib/mysql/ -R


Delete the MySQL profile

sudo rm /etc/mysql/ -R


Automatically uninstall mysql

sudo apt-get autoremove mysql* --purge
sudo apt-get remove apparmor


Download version 5.5.51 from MySQL site

wget https://dev.mysql.com/get/Downloads/MySQL-5.5/mysql-5.5.56-linux-glibc2.5-x86_64.tar.gz


Add mysql user group

sudo groupadd mysql


Add mysql (not the current user) to mysql user group

sudo useradd -g mysql mysql


Extract it

sudo tar -xvf mysql-5.5.56-linux-glibc2.5-x86_64.tar.gz


Move it to /usr/local

sudo mv mysql-5.5.56-linux-glibc2.5-x86_64 /usr/local/


Create mysql folder in /usr/local by moving the untarred folder

cd /usr/local
sudo mv mysql-5.5.49-linux2.6-x86_64 mysql


set MySql directory owner and user group

cd mysql
sudo chown -R mysql:mysql *


Install the required lib package (works with 5.6 as well)

sudo apt-get install libaio1


Execute mysql installation script

sudo scripts/mysql_install_db --user=mysql


Set mysql directory owner from outside the mysql directory

sudo chown -R root .


Set data directory owner from inside mysql directory

sudo chown -R mysql data


Copy the mysql configuration file

sudo cp support-files/my-medium.cnf /etc/my.cnf


Start mysql

sudo bin/mysqld_safe --user=mysql &
sudo cp support-files/mysql.server /etc/init.d/mysql.server


Set root user password

sudo bin/mysqladmin -u root password '[your new password]'


Add mysql path to the system

sudo ln -s /usr/local/mysql/bin/mysql /usr/local/bin/mysql


Reboot!


Start mysql server


sudo /etc/init.d/mysql.server start


Stop mysql server

sudo /etc/init.d/mysql.server stop


Check status of mysql

sudo /etc/init.d/mysql.server status


Enable myql on startup

sudo update-rc.d -f mysql.server defaults

*Disable mysql on startup (Optional)
sudo update-rc.d -f mysql.server remove


REBOOT!


Now login using below command, start mysql server if it's not running already


mysql -u root -p