$HOME is not set correctly for plug-ins

[Alexander Haas]

Hi Jon,

thank you for getting back on me. Of course I did do a su - nagios for 
my tests. I fact all my console tests run fine. I think it's Nagois 
doing some kind of su in its internals which causes my plug-in to get a 
wrong $HOME inherited. The bad behavior only occurs when executed by the 
actual Nagios setup.

Best,

Alex


On 24.11.2010 22:04, Jon Adcock wrote:
> Alexander,
>   It sounds like you are saying that you login as root, then su to 
> nagios.  If that's the case, make sure that you use su - nagios
> The hyphen tells su to use the environmental variables of the user 
> that you are switching to.  Without using the hyphen, it continues to 
> use the environmental variables of the base user (root in this case).
>
> Jon Adcock
> Network Systems Administrator
> MIS / Systems Team
> Leon County
> (850) 606-5500
> >>> Alexander Haas <alex at geloet.de> 11/24/2010 3:39 PM >>>
> Hi Nagios users,
>
> this is my first post. I encountered a behavior I am not able to
> understand. Well, I guess I did understand it, but I don't know how to
> counter it :)
>
> When I write a plug-in for Nagios it is executed as nagios:nagios. Yet
> $HOME is set to "/root".
>
> My /etc/password and nagios's home-directory are ok. It works well when
> I log in as user nagios and execute the plug-in there.
>
> I did expect to find some attributes for command definitions to set the
> home directory, but I could not find any.
>
> I guess the whole thing has to do with su and the way it does (not)
> handle the home directory or environment in general.
>
> Currently I work around that behavior using this code:
> if [ "$HOME" == "/root" ] && [ "`whoami`" == "nagios" ]
> then
>      HOME="/usr/local/nagios"
> fi
>
> But as you might guess I am not very satisfied.
>
> Thanks in advance,
>
> Alex
>
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