Detailed explanation of uninstalling MySQL completely under Linux

How to be in Linux Complete uninstall under MySQL Database ？ The following article will give you a summary 、 Sort it out in Linux Completely uninstall under the platform MySQL Methods . The text is introduced in detail through graphics and text and example code , I believe it is very helpful for everyone to understand and learn , Here are friends who need to learn together .

One 、 Use the following command to view the current installation mysql situation , Find out if you have mysql

rpm -qa|grep -i mysql 

As you can see in the figure below ：

Show that you installed ：

     MySQL-client-5.5.25a-1.rhel5

     MySQL-server-5.5.25a-1.rhel5

2、 stop it mysql service 、 Remove the previously installed mysql

The delete command ：rpm -e –nodeps Package name

rpm -ev MySQL-client-5.5.25a-1.rhel5 
rpm -ev MySQL-server-5.5.25a-1.rhel5 

If you are prompted for a dependency package error , Then use the following command to try

rpm -ev MySQL-client-5.5.25a-1.rhel5 --nodeps 

If prompted incorrectly ：error: %preun(xxxxxx) scriptlet failed, exit status 1

Use the following command to try ：

rpm -e --noscripts MySQL-client-5.5.25a-1.rhel5 

3、 Find the old version before mysql The catalog of 、 And delete the old version mysql Files and Libraries

find / -name mysql

The results are as follows ：

find / -name mysql 

/var/lib/mysql
/var/lib/mysql/mysql
/usr/lib64/mysql

Delete corresponding mysql Catalog

rm -rf /var/lib/mysql
rm -rf /var/lib/mysql
rm -rf /usr/lib64/mysql

The specific steps are shown in the figure ： Find the directory and delete

Be careful ： After uninstalling /etc/my.cnf Does not delete , Need to delete manually

rm -rf /etc/my.cnf 

4、 Check whether the machine is installed again mysql

rpm -qa|grep -i mysql