centos major upgrade best practice

[dandadude]

Hi!

I need a best practice to upgrade CentOS 5.7 to CentOS 6.0.

My Cpanel server is running in a XEN domU, and the new server will also be a XEN domU, so the 2 servers can run parallel, but I need to provide a new IP for the new server.

Other questions I don't really know:
- How can I install Cpanel on the new server parallel if I only have 1 licence dedicated to my old server's IP?
- I have read that account migration is the best choice. If this is true, what else do I have to do, is there a howto for this?

Thanks,
Daniel

 

[cPanelTristan]

Hello Daniel,

For the new server, you might contact [email protected] to ask about a possible trial license for the cPanel to cPanel migration. I cannot state how they will handle it as the licensing is at their discretion.

The best route would be to get the new CentOS 6 machine running with cPanel on it, then use WHM > Transfers > Copy multiple accounts/packages from another server area. For any cPanel / WHM configuration settings, you might follow the recommendations in this thread to copy those files over:

http://forums.cpanel.net/f5/process-moving-whm-cpanel-server-new-hardware-184192.html#post831162

 

[dandadude]

Hi Tristan!

Thanks for the answer! I have checked the thread you have referred but for instance, those commands do not include the migration of special virtualhost settings in:
/usr/local/apache/conf/userdata
And what about /etc/my.cnf...
What about /usr/local/lib/php.ini...

And there must be so many other customizations. Isn't there any completer list of config files to migrate?

It seems a bit scary, because there are so many things that a migration like this can be a real pain in the *ss

Thanks,
Daniel

 

[cPanelTristan]

The files provided are the cPanel customized files rather than user system customized files. /etc/my.cnf and /usr/local/lib/php.ini are not cPanel custom template files.

You can certainly add /usr/local/apache/conf/includes and /usr/local/apache/conf/userdata as folders to copy.

 

[dandadude]

Hi Tristan!

Ok, thanks for the information. It is a bit scary this way, because who knows what I will leave out, but the tools you have mentioned makes the migration much easier!

Thanks very much!

Daniel