163 lines
4.8 KiB
Bash
163 lines
4.8 KiB
Bash
#!/bin/bash
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#
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# https://www.monitoringexchange.org/inventory/Check-Plugins/Operating-Systems/Linux/Check-Processes-and-Ports
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# Usage: .//check_system_pp
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#
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# Description:
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# This plugin determines whether the server
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# is running properly. It will check the following:
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# * Are all required processes running?
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# * Are all the required TCP/IP ports open?
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#
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# Created: 27.01.2006 (FBA)
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#
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# Changes: 28.01.2006 added yellow check (FBA)
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# 29.01.2006 change "px -ef" to "ps -ax" (FBA). Problems with long arguments
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# 31.01.2006 added all OK Status with all procs and ports (FBA)
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# 15.07.2006 change "ps -ax" to "ps ax" (FBA). Also problems with long arguments under RedHat 3/4
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# 17.07.2006 Plugin rewrite and bugfixes (Magnus Glantz)
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# 19.07.2006 Removed utils.sh dependency.
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#
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#
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#
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COMMON_SH_LIB=/usr/lib/nagios/plugins/isti-cnr/check_library.sh
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if [ -f $COMMON_SH_LIB ] ; then
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. $COMMON_SH_LIB
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else
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PLUGIN_DIR=/usr/lib/nagios/plugins
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ISTI_PLUGDIR=$PLUGIN_DIR/isti-cnr
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fi
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# We want the list of processes and ports to be customizable without editing this script
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PP_CONF=$ISTI_PLUGDIR/check_system_pp.conf
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if [ -f $PP_CONF ] ; then
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. $PP_CONF
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else
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##################################################################################
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#
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# Processes to check
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PROCLIST_RED="sshd"
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PROCLIST_YELLOW="syslogd cron"
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# Ports to check
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PORTLIST="22"
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##################################################################################
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fi
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PATH="/usr/bin:/usr/sbin:/bin:/sbin"
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STATE_OK=0
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STATE_WARNING=1
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STATE_CRITICAL=2
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STATE_UNKNOWN=3
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STATE_DEPENDENT=4
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print_gpl() {
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echo "This program is free software; you can redistribute it and/or modify"
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echo "it under the terms of the GNU General Public License as published by"
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echo "the Free Software Foundation; either version 2 of the License, or"
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echo "(at your option) any later version."
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echo ""
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echo "This program is distributed in the hope that it will be useful,"
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echo "but WITHOUT ANY WARRANTY; without even the implied warranty of"
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echo "MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the"
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echo "GNU General Public License for more details."
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echo ""
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echo "You should have received a copy of the GNU General Public License"
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echo "along with this program; if not, write to the Free Software"
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echo "Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA"
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}
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print_help(){
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echo ""
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echo "System process and port check script for Nagios."
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echo ""
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echo "Usage: ./check_system_pp"
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echo "Website: http://www.nagiosexchange.org"
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echo "https://www.monitoringexchange.org/inventory/Check-Plugins/Operating-Systems/Linux/Check-Processes-and-Ports"
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echo ""
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print_gpl
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}
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while test -n "$1"
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do
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case "$1" in
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*) print_help; exit $STATE_OK;;
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esac
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done
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check_processes_red()
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{
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PROCESS="0"
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ERROR_PROCS=""
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for PROC in `echo $PROCLIST_RED`; do
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if [ `ps -ef | grep -w $PROC | grep -v grep | wc -l` -lt 1 ]; then
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PROCESS=1
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ERROR_PROCS="$ERROR_PROCS""$PROC ";
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fi
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done
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if [ $PROCESS -eq "1" ]; then
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exit_red=$STATE_CRITICAL
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elif [ $PROCESS -eq "0" ]; then
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exit_red=$STATE_OK
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fi
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}
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check_processes_yellow()
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{
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PROCESS="0"
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WARNING_PROCS=""
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for PROC in `echo $PROCLIST_YELLOW`; do
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if [ `ps -ef | grep $PROC | grep -v grep | wc -l` -lt 1 ]; then
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PROCESS=1
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WARNING_PROCS="$WARNING_PROCS""$PROC ";
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fi
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done
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if [ $PROCESS -eq "1" ]; then
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exit_yellow=$STATE_WARNING
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elif [ $PROCESS -eq "0" ]; then
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exit_yellow=$STATE_OK
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fi
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}
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check_ports()
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{
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PORTS="0"
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ERROR_PORTS=""
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for NUM in `echo $PORTLIST`; do
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if [ `netstat -an | grep LISTEN | grep -w $NUM | grep -v grep | wc -l` -lt 1 ]; then
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PORTS=1
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ERROR_PORTS="$ERROR_PORTS""$NUM ";
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fi
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done
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if [ $PORTS -eq "1" ]; then
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exit_ports=$STATE_CRITICAL
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elif [ $PORTS -eq "0" ]; then
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exit_ports=$STATE_OK
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fi
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}
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check_processes_red
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check_ports
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check_processes_yellow
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final_exit=`expr $exit_ports + $exit_red + $exit_yellow`
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if [ $final_exit -eq "0" ]; then
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echo "SYSTEM OK - All monitored resources OK. Processes: $PROCLIST_RED $PROCLIST_YELLOW. Ports: $PORTLIST."
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exitstatus=$STATE_OK
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elif [ $final_exit -eq "1" ]; then
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echo "SYSTEM WARNING - Processes DOWN. ($WARNING_PROCS)."
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exitstatus=$STATE_WARNING
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elif [ $final_exit -ge "1" ]; then
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echo "SYSTEM CRITICAL - Resources DOWN! Processes: $ERROR_PROCS $WARNING_PROCS. Ports: $ERROR_PORTS"
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exitstatus=$STATE_CRITICAL
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fi
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exit $exitstatus
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