I'd like to upgrade my server from Ubuntu 12.04 LTS to 14.04 LTS.
However I have a small number of 3rd party applications, looking at their PPA list I foresee I could have trouble. So I am here to ask which is the safest migration path.
A quick list:
nginx-stable-precise.list nginx-stable-precise.list.save ondrej-mysql-experimental-precise.list ondrej-mysql-experimental-precise.list.save ondrej-php5-precise.list ondrej-php5-precise.list.save
Considering I see "precise" in the above listing, do I have to do something particular in order to have those PPAs switched over to their "trusty" version? Or shall Ubuntu be so smart to detect that and deal with it? I have checked and all those PPAs have a corresponding "trusty" distro version available.
Or, do I have to manually remove the PPA references in
apt, upgrade to 14.04 and then add the PPAs again?
What I am asking is really a checklist about what to do before and after the upgrade in order to not break anything.
Finally, what if I wanted to stop using the PPA version of say nginx and just use the 14.04 bundled native nginx? Do I just remove the PPA reference before the upgrade or what?
Thanks in advance