Nagios

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Downloads

DEB Packages

nagios3 nagios-plugins nagios-nrpe-plugins

Config prüfen

/usr/local/nagios/bin/nagios -v /etc/nagios/nagios.cfg

pnp4nagios

NSCA

apt-get install nsca

NSCA Testscript

#!/bin/bash
CFG="/etc/nagios/send_nsca.cfg"
CMD="hostname;ROOT PARTITION;33;10;/"
/bin/echo $CMD | /usr/sbin/send_nsca -H 123.13.132.123 -d ';' -c $CFG

echo "test;test;0;test-output" | send_nsca -H hostname -p 5667 -c /etc/send_nsca.cfg

Client

send_nsca.cfg send_nsca 

#commands file tail
# 'process-host-perfdata' command definition
define command{
        command_name    process-host-perfdata
        command_line    /usr/bin/printf "%b" "$LASTHOSTCHECK$\t$HOSTNAME$\t$HOSTSTATE$\t$HOSTATTEMPT$\t$HOSTSTATETYPE$\t$HOSTEXECUTIONTIME$\t$HOSTOUTPUT$\t$HOSTPERFDATA$\n" >> /var/nagios/host-perfdata.out
        }


# 'process-service-perfdata' command definition
define command{
        command_name    process-service-perfdata
        command_line    /usr/bin/printf "%b" "$LASTSERVICECHECK$\t$HOSTNAME$\t$SERVICEDESC$\t$SERVICESTATE$\t$SERVICEATTEMPT$\t$SERVICESTATETYPE$\t$SERVICEEXECUTIONTIME$\t$SERVICELATENCY$\t$SERVICEOUTPUT$\t$SERVICEPERFDATA$\n" >> /var/nagios/service-perfdata.out
        }

#submit_service_check
define command {
    command_name submit_service_check
    command_line $USER1$/eventhandlers/distributed-monitoring/obsessive_svc_handler $HOSTNAME$ "$SERVICEDESC$" $SERVICESTATE$ "$SERVICEOUTPUT$|$SERVICEPERFDATA$"
    }


#submit_host_check
define command{
        command_name    submit_host_check
    command_line $USER1$/eventhandlers/distributed-monitoring/obsessive_host_handler $HOSTNAME$ $HOSTSTATE$ "$HOSTOUTPUT$|$HOSTPERFDATA$"
    }

NRPE

/etc/default/nagios-nrpe-server

  • hier kann SSL ein und ausgeschalten werden

nrpe xinetd.d

#Nagios remote Service
service nrpe
{
        flags           = REUSE
        socket_type     = stream
        wait            = no
        user            = nagios
        group           = nagios
        server          = /usr/local/nagios/nrpe
        server_args     =  -c /usr/local/nagios/nrpe.cfg --inetd -n
        log_on_failure  += USERID
        disable         = no
        only_from       = 127.0.0.1 192.168.0.1
}

MK Livestatus

http://www.nagios-portal.org/wbb/index.php?page=Thread&threadID=17389 http://docs.icinga.org/1.3.0/de/int-mklivestatus.html

mcrypt

mcrypt libmcrypt -dev php5-mcrypt http://www.nagios-portal.org/wbb/index.php?page=Thread&threadID=19022

NagiosQL

#Passwort Reset
update `tbl_user` set `username` = 'admin', `alias` = 'Administrator', `password` = md5('password'), `access_rights` = '11111111', `wsauth` = '0', `active` = '1', `nodelete` = '1', `last_login` = '', `last_modified` = NOW() where `id` = '1';

NagiosQL Repository 

# NagiosQL
deb http://debian.swobspace.net lenny main
deb-src http://debian.swobspace.net lenny main

Graphiz

apt-get install graphviz

check_nt

http://www.nagios-wiki.de/nagios/plugins/check_nt 

 ./check_nt -H xxxxxxxxxxxxxxxx -p 12489 -v CLIENTVERSION           
 ./check_nt -H <host_address> -p 12489 -v COUNTER -l "\\Leistungsobjekt(Instanz)\\Indikator"

check_mailq

command[check_nrpe_mailq]=/usr/lib/nagios/plugins/check_mailq -w 50 -c 100 -M qmail | postfix | sendmail | exim


qmail problem

QMail Fix Part1: http://www.cherpec.com/2008/08/nagios-check_mailq-is-not-executable-by-uid-0/

Danke an: http://forums.cacti.net/viewtopic.php?t=13199

Code:

  • /5 * * * * root /var/qmail/bin/qmail-qstat > /tmp/qmail-qstat


and then use a modified sript to read the data:

Code: 

#!/usr/bin/perl
#
# qmailq.pl
#
# Author        : Jeremy Garcia <jeremy@linuxquestions.org>
# Modified      : Ollie Maitland
# Date          : 07/07/04, 25/04/06
# Version       : 0.3
# Description   : Script to output the number of messages in a qmail queue.
#                 Output is <messages in queue> <messages in queue but not yet
#                 preprocessed>
#                 Thanks to Nick, who alerted me to the fact that the script
#                 needed an update
#                 to be compatible with the latest version of cacti.

# Full path to qmail-stat.  If you are using Linux you will need to write
# a SUID perl wrapper as suid sh scripts are no good in Linux.
#@queue = `/var/qmail/bin/qmail-qstat`;

open (QMAIL, '</tmp/qmail-qstat');
my @queue = <QMAIL>;
close QMAIL;

@jqueue = split " ",$queue[0];
@pro    = split " ",$queue[1];

print join(':','messages',$jqueue[3])," ",join(':','unprocessed',$pro[7]);

Pretty obvious but some people might be having problems...incidentally for those people searching errors, this is what you might get when trying to use apache directly on the qmail-qstat binary: 

find: queue/mess/*: Permission denied
find: queue/todo: Permission denied
messages in queue: -1
messages in queue but not yet preprocessed: -1
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