Unable to use constants in templates or commands

[heino-vdbh]

Director 1.3.1

When I use constants in commands or command templates the constants always get quoted and dont get expanded

When I edit the the conf file by hand and remove the quotes and reload icinga2 the constants get expanded.

[dgoetz]

This also hurts me when I want to define a commandline like [ "/usr/bin/sudo" , PluginDir + "/command" ], which I did not manage to create at all. If I could hardcode the path instead of using PluginDir, it would be doable, but requiring the flexibility of PluginDir because of different os families in use I failed.

[cflinspach]

@dgoetz Absolute paths are accepted as provided, relative paths are prefixed with "PluginDir + ", similar Constant prefixes are allowed. If you use the full path it won't add PluginDir so you can define your own. Here's two screenshots of one of our commands that we use sudo with.

[dgoetz]

@cflinspach: Thanks, but the problem is that I need PluginDir because of the different os families used here.

[cflinspach]

@dgoetz so PluginDir would resolve to different paths based on the check source?

[dgoetz]

@cflinspach: Yes, SLES uses arch-independent /usr/lib/nagios/plugins and RHEL uses arch-dependent /usr/lib64/nagios/plugins.

[gody01]

+1 for use of Constants. Big problem with secure information. Now usernames/passwords has to be in the DB - not good.

[NeverUsedID]

+1 :)

I think a rather easy solution would be to add some special syntax like {{{mystring}}} to avoid that the director placing quotes around that "string".

In my case i need that for auto creating the display_name:

display_name = vars.location + "_" + vars.devicetype + "_" + vars.hostname

Never found a way to configure this with the director.

[widhalmt]

ref/NC/589957

[Linuxfabrik]

Is there any news on this issue? Or is there another way of supporting different plugin directories on different operating systems?

[Thomas-Gelf]

Hi @Linuxfabrik,

that's perfectly possible, has been fixed a long time ago. You can use PluginDir or other external constants:

@cflinspach showed how to use sudo. What is not possible is having a constant "in the middle", like BinDir + /sudo + Plugindir + /check_plugin. I'm not unhappy about this, as such a command is dangerous and should be the absolute exception and not the rule. You are forced to specify the plugin path in your sudoers file, so it shouldn't hurt to write the full path in the Icinga config too.

In case you really need a solution for that specific use-case please open a dedicated issue. I'll close this one for now - as what has originally been asked for has been implemented.

Cheers,
Thomas