Check_NTP (embedded perl) Problem
Stanley Hopcroft
Stanley.Hopcroft at IPAustralia.Gov.AU
Tue May 13 06:48:50 CEST 2003
Dear Sir,
I am writing to thank you for your letter and your unusually clear
presentation of the problem,
On Mon, May 12, 2003 at 02:20:57PM -0600, Kevin Stussman wrote:
> Have been using Netsaint / Nagios for a while now (thank you very much!)
> but our recent migration to Redhat 9 and Nagios 1.0 has a few problems:
>
> ---------
> Problem 1
> ---------
> 1. I cannot get the check_ntp perl script to work properly inside of
> nagios. For example, the command run by itself works fine:
>
> # ./check_ntp -H jessie
> NTP OK: Offset -0.001372 secs, jitter 2.986 msec, peer is stratum 3
>
> Now when I start up nagios:
>
> [1052766953] SERVICE ALERT: jessie;Simple NTP Service
> Response;CRITICAL;SOFT;1;(No output!)
>
> I *believe* this has to do with embedded perl. So I decided to turn
> off embedded perl...which brings me to problem number two:
>
It may.
'No output!' is the catch all message for plugins that abend or
otherwise fail to output any result.
Things to check are the standard things for Perl plugin
. utils.pm is in a place where Perl can find it (see perl -V to see the
@INC var containing the paths it looks)
. argument/option mismatch between the plugin and what is coded in
checkcommands.cfg and services.cfg
. try Patricks suggestion of wrapping the plugin in a shell wrapper that
echos useful things (like arguments, output etc etc) to the file system
and give this to Nag to run.
. try building the mini_epn in contrib/ (the Nagios contrib not the
plugins) and try running it there.
If it fails, it probably _is_ an ePN prob. However, this is unlikely
since I think all the standard plugins are ePN aware (extra coding
restrictions).
About ePN, I have some questions about your environment.
RH 9 ships with (AFAIK) a (threaded 5.8.0) Perl known to cause fatal
problems with Nag - it will not start.
Please would you send me the output of perl -V and explain anything
extraordinary you had to do to get it to run at all with ePN ?
> ---------
> Problem 2
> ---------
> 2. No matter how I try from the command line, I cannot turn off embedded
> perl. I use this command line configure (I tried a lot of combinations):
>
> ./configure --prefix=/monitor/nagios --with-nagios-user=nagios
> --with-nagios-group=nagios --with-command-user=nagioscmd
> --with-cgiurl=/monitor/nagios/cgi-bin --with-htmurl=/nagios
> --enable-embedded-perl=no --disable-embedded-perl
> --without-embedded-perl
>
> and the results are:
> *** Configuration summary for nagios 1.0 11-24-2002 ***:
>
> General Options:
> -------------------------
> Nagios executable: nagios
> Nagios user/group: nagios,nagios
> Command user/group: nagioscmd,nagios
> Embedded Perl: yes, without caching
> Install ${prefix}: /monitor/nagios
> Lock file: ${prefix}/var/nagios.lock
> Init directory: /etc/rc.d/init.d
>
This puzzles me. The only way you get Nag build with an embedded Perl is
_with_ the option to configure.
(eg
tsitc> grep -i embedded -3 build//nagios-1.0/configure
USEPERL=no;
INSTALLPERLSTUFF=no;
# Check whether --enable-embedded-perl or --disable-embedded-perl was
given.
if test "${enable_embedded_perl+set}" = set; then
enableval="$enable_embedded_perl"
cat >> confdefs.h <<EOF
#define EMBEDDEDPERL 1
EOF
)
If you leave the option out, no Perl interpreter is built into the
binary (ie no --enable-embedded-perl option, no ePN).
Perhaps configure used the former cached values (in config.status) ?
I recommend a make clean after changing the options to configure.
> The only solution was to hack configure to force a no embedded
> version.....but unfortunately, I still get a version of nagios
> that does not like the check_ntp command output.
>
> Any help appreciated.
>
> Regards,
>
> Kevin.
>
> Nagios : 1.0 and 1.0b6
> Plugins : nagios-plugins-1.3.0-beta3
> Linux : Linux rex 2.4.20-9 #1 Wed Apr 2 13:42:50 EST 2003 i686 i686 i386
> GNU/Linux
> GCC : gcc version 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
>
--
------------------------------------------------------------------------
Stanley Hopcroft
------------------------------------------------------------------------
'...No man is an island, entire of itself; every man is a piece of the
continent, a part of the main. If a clod be washed away by the sea,
Europe is the less, as well as if a promontory were, as well as if a
manor of thy friend's or of thine own were. Any man's death diminishes
me, because I am involved in mankind; and therefore never send to know
for whom the bell tolls; it tolls for thee...'
from Meditation 17, J Donne.
-------------------------------------------------------
Enterprise Linux Forum Conference & Expo, June 4-6, 2003, Santa Clara
The only event dedicated to issues related to Linux enterprise solutions
www.enterpriselinuxforum.com
_______________________________________________
Nagios-users mailing list
Nagios-users at lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/nagios-users
::: Please include Nagios version, plugin version (-v) and OS when reporting any issue.
::: Messages without supporting info will risk being sent to /dev/null
More information about the Users
mailing list