Can we install MySQL different versions on Linux CentOS5.8? - mysql

Question

I am trying to install a software which required MySQL-server, MySQL-client installed on the server so now I want to install MySQL-server and MySQL-client using rpm files "MySQL-server-5.5.17-1.rhel5.x86_64.rpm" and "MySQL-client-5.5.17-1.rhel5.x86_64.rpm".
I have installed MySQL-client but when I try to run mysql-server
*rpm -i MySQL-server-5.5.17-1.rhel5.x86_64.rpm*
it's showing error:
*error: Failed dependencies:
MySQL conflict with mysql-5.0.77-4.el5_6.6.x86_64
MySQL conflict with mysql-5.0.77-4.el5_6.6.i386
MySQL conflict with mysql-server-5.0.77-4.el5_6.6.x86_64*
So how can i solve this problem?

Answer 1

the error given by you *error: Failed dependencies:
MySQL conflict with mysql-5.0.77-4.el5_6.6.x86_64
MySQL conflict with mysql-5.0.77-4.el5_6.6.i386
MySQL conflict with mysql-server-5.0.77-4.el5_6.6.x86_64*
It clear show that the machine you are going to install mysql 5.5 rpm have mysql 5.0.77 installed .
to resolve this problem .
1. you take backup of datadir and my.cnf (if you are using mysql 5.0 db server earlier).
2. remove all mysql 5.0 server packages , to remove these package you should knew what are the packages already installed on machine
to view all mysql package already installed use rpm -qa | grep -i "mysql*" this command show what package is already installed on machine
now you have to remove all package which name shows in above command.
to remove a package/rpm use rpm -e mysql-5.0.** if show error then use
rpm -e --nodeps mysql-5.0.**
we have to remove all packages one by one by using rpm -e .
after successful remove all older version of mysql , now start installation of mysql-5.5*** packages by using rpm -ivh mysql-5.5***.rpm.

Answer 2

First question - is the version of MySQL already installed actually in use or was it simply there as a result of a fresh CentOS install? If the former, try upgrading rather than installing. If the latter, uninstall the old version (possibly using the --no-deps option on rpm) and then install the newer version
Next, are you trying to replace MySQL or install another version alongside it?
If the former, again try upgrading rather than installing. If that's not possible, you're going to have to remove the older version and then install the new version
If the latter, and if it is possible, look at the --prefix and --relocate options in RPM.as they may help.
If you do to mange to get it installed side by side with an older, you'll have fun and games ensuring that the relevant versions are pointing to the correct libraries and that you don't get any corruption between them. Also, you will need to run them so that they listen on separate ports with separate database folders, PID and socket files etc.
Whatever you need to do, do it out of business hours with as many backups as you can do