Nagios upgrade 3.2.3 -> 4.x

[gregb]

Hi Everyone

We have a rather large Nagios installation with a live and standby master, with 6 pollers underneath which monitor around 2200 hosts and 32000 services. We're running Centreon on top of Nagios on the masters as our web interface.

It's been a while since these machines have been upgraded and now is the time. They work excellently but we could just do with some more grunt and features.

I'm a bit stumped and overwhelmed where to start in terms of upgrading, what is the best plan and what order should things be done in? We also have a lot of historical data in our cent-storage database which I would like to keep. So, here is what we have, what are people's thoughts on upgrading?

- All servers are running on RHEL 5.5.
- Masters are running Nagios 3.2.3
- Pollers are running Nagios 3.2.2
- Masters are running Centreon 2.3.4, with mysql database using InnoDB engine

My very basic high level master plan would be to build new masters and pollers with RHEL 6.6, install the latest Nagios 4.x and Centreon 3.x and then import all my config, then flip from live to new live.

Any ideas/tips/plans/gotchas would be most welcome.

Cheers

Greg

[tmcdonald]

You'll need to ask this over on the Centreon forums, as we do not provide support for that interface. The backend Core upgrade should just be a configure, make, make install, but I don't know what (if any) modifications they make to the config/source.