Nagios Support Forum

I'm looking for some advice and possibly some procedures on the best way to proceed here....

My company is running an extremely old version of Nagios Core (v3.3.1) for a portion of our production environment monitoring and its essentially become a black box to the current team, including myself. I've only been with the company for < 3 months. I'd love to upgrade it to a current version future upgradable via RPM if possible but, we have zero documentation on the installation method, configuration parameters, etc.

Can you tell if me if its possible to upgrade this to the current stable release?

If it is possible, can you advise as to the process involved?

Thanks in advance...

It's usually easier and faster to do a web search, then look at the links for documentation. I posted the link to the documentation at the end.

https://www.google.com/search?q=upgrade ... e&ie=UTF-8

https://assets.nagios.com/downloads/nag ... ading.html

Engineer1974 wrote:Can you tell if me if its possible to upgrade this to the current stable release?

It is possible to upgrade the Nagios Core daemon in this state, yes. That doesn't mean 100% of what was built out on top of this 3.3.1 install ports nicely to a 4.x install.

Some of your configuration files and Nagios objects may need to change to accommodate the 4.x way of doing things. A good first step would be to compile the latest 4.x yourself on a fresh VM, and attempt to verify your existing configuration(s). It's entirely possible that "just works" and you can just drop all of your existing configs into a 4.x install -- that's happy path.

The more likely path is the configuration verification process will complain about some objects/files and you'll need to step through modifying each of them until the configuration set passes verification. I'm not sure what's typically covered in a Nagios XI support contract these days, but if this service is business critical and you end up totally lost, l it might be worth requesting a quickstart to explore enterprise support options.

Engineer1974 wrote:If it is possible, can you advise as to the process involved?

In general, the official docs are a good starting point:
https://assets.nagios.com/downloads/nag ... ading.html

This could "just work", or represent dozens of engineering hours depending on the complexity of your Nagios Core setup. If you're leveraging agents on your machines like NRPE or NSClient++, you'll probably want to be upgrading those as well. if you're leveraging custom plugins that have dependencies which aren't well documented, untangling those can also represent dozens of engineering hours.