Configure Nagios to monitor multiple environments

[NicoN]

Good day

Can someone please assist on how to configure nagios to navigate to, and display more than one environment on the same host? For example:

http://host/nagios/uat
http://host/nagios/prod

In short, I've tried and copied most folders/files inside /usr/local/nagios/, rename them, and tried some config changes e.g.

etc/cgi_uat.cfg , nagios_uat.cfg
etc/cgi_prod.cfg , nagios_prod.cfg

Als too tried configure apache config and created two nagios.configs e.g.

nagios_uat.conf
nagios_prod.conf

But still it only displayed one and the same environment, irrespective if I navigated to the UAT or to PROD URL's

Thanks
Nic

[scottwilkerson]

you would also need to start 2 different instances of nagios

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/usr/local/nagios/bin/nagios -c /usr/local/nagios/etc/nagios_prod.cfg -d

and

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/usr/local/nagios/bin/nagios -c /usr/local/nagios/etc/nagios_uat.cfg -d

Either way this is going to be a mess because you are going to have to change all the paths in all of the files to reference the new paths for each type

Finally you would need to change the http directive to match the correct share and cgi directories.

Honestly, if at all possible I would recommend just installing Nagios on 2 separate VM's

[NicoN]

Thanks for the reply
Preferably would like to stick to one VM monitoring multiple environments.
But will give it one more try though...

The actual problem seems to be it everytime reads the below default main config file, irrespective of the changes and different URL's

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['main_config_file']='/usr/local/nagios/etc/cgi.cfg';

Explanation:
Ive tried and started two seperate nagios daemons as suggested (the -c option does not exists)

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/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios_uat.cfg
/usr/local/nagios/bin/nagios -d /usr/local/nagios/etc/nagios_prod.cfg

All config related folders were copied and modified to a uat path
/usr/local/nagios/uat/* -- etc, share, sbin ..

I've changed nagios/uat/share/config.inc.php, to point to a new UAT config

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['main_config_file']='/usr/local/nagios/uat/etc/cgi.cfg';

After some tests realised the problem is that it still reads the original file '/usr/local/nagios/etc/cgi.cfg'
Irrespective of the URL
http://host/uat
http://host/prod

Any idea how to make it read the uat config file?

Snippets of Updated Apache UAT config

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ScriptAlias /uat/cgi-bin "/usr/local/nagios/uat/sbin"
Alias /uat "/usr/local/nagios/uat/share"
<Directory "/usr/local/nagios/uat/share"

[scottwilkerson]

Oh yes, you hit the other problem

What you would need to do is re-compile nagios for this 2nd version and pass the following to the ./configure

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./configure --sysconfdir=/usr/local/nagios/uat/etc

but then you would need to have the binaries stored in a different location.... and down the rabbit hole you go

Around line 1425 you can see the configure options
https://github.com/NagiosEnterprises/na ... /configure

[NicoN]

Thanks very much for assistance, issue clarified now. Decided to go for a Nagios VM per environment

[scottwilkerson]

Thanks very much for assistance, issue clarified now. Decided to go for a Nagios VM per environment

Sounds like a good plan