Very basic configuration questions

[Pete Dewell]

Try defining the $USER$ variable as

$USER5$='our.site.tld'

I found that using single quotes stops a lot of substitution errors.

As for restarting Nagios, there is a "restart" option on the web 
interface, under "process info". I'm not sure whether it uses HUP, but 
it seems to do the job.

Pete Dewell

Ralph.Grothe at itdz-berlin.de wrote:
> Hi,
> 
> I newly subscribed to this list.
> So forgive if these kind of embryonic questions already have been
> asked and answered a 1000 times.
> I'm a bit too impatient to dig through the FAQs and list archives
> right now.
> I will do this later.
> 
> I tweaked my set of config files so long until nagios pre-flight
> check didn't report errors
> but only warnings anymore.
> 
> The warnings are due to many predefined hosts that I haven't had
> the time to elaborate on required service checks yet.
> 
> So I started nagios in daemon mode (i.e. -d), and having had the
> first 6 nodes monitored (i.e. mere check_icmp so far) for the
> lunch break.
> 
> Of course I couldn't expect everything to work from the
> beginning.
> 
> So I noticed a couple of errors when I turned my eye on nagios
> log and nagios user's mail queue.
> 
> First there's a minute macro expansion problem.
> 
> Among others I defined this MX domain
> 
> $ grep ^\$USER5 /opt/sw/nagios/etc/resource.cfg
> $USER5$=our.site.tld
> 
> $ grep resource.cfg /opt/sw/nagios/etc/nagios.cfg
> resource_file=/opt/sw/nagios/etc/resource.cfg
> 
> $ cat -n /opt/sw/nagios/etc/contacts.cfg | sed -n 15,23p
>     15
>     16  define contact {
>     17      use                                 generic-contact
>     18      contact_name                        grothe
>     19      alias                               Ralph Grothe SAZ
>     20  #                                       see resource.cfg
> for $USER5$
>     21      email
> ralph.grothe@$USER5$
>     22  }
>     23
> 
> This is what happened.
> The MTA bounced the notification on an check_icmp alert because
> there was some queer substitution,
> recipient rewriting going on.
> 
> 
> $ grep -E Final-Recipient\|Diagnostic-Code /var/spool/mail/nagios
> 
> Final-Recipient: rfc822; ralph.grothe at USER5.other.site.tld
> Diagnostic-Code: X-Postfix; Name service error for
> name=user5.other.site.tld
> 
> 
> Why didn't the macro get substituted?
> Did the MTA rewrite the other.site.tld as suffix, or where could
> have come from?
> (n.b. {our,other}.site.tld are merely dummies for real addresses
> for I feared being spammed)
> 
> Another question,
> if I extend or adapt my Nagios config do I have to bring the the
> daemon down,
> or would a 
> 
> $ kill -HUP $(cat /var/opt/nagios/nagios.pid)
> 
> suffice?
> 
> Thanks
> 
> 
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-- 
Pete Dewell | Stuff Done
pete at stuff-done.co.uk


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