File rcnagios of Package nagios
#! /bin/sh
# Copyright (c) 1995-2001 SuSE GmbH Nuernberg, Germany.
# 2002 SuSE Linux AG Nuernberg, Germany.
# 2007 SuSE Linux GmbH Nuernberg, Germany.
#
# Author: Wolfgang Rosenauer, Lars Vogdt
#
#
# /etc/init.d/nagios
#
# and symbolic its link
#
# /usr/sbin/rcnagios
#
# System startup script for nagios
#
### BEGIN INIT INFO
# Provides: nagios
# Required-Start: $local_fs $remote_fs $syslog $network
# Required-Stop: $local_fs $remote_fs $syslog $network
# Should-Start: $time sendmail httpd2 xntpd $named cron
# Should-Stop: sendmail
# Default-Start: 3 5
# Default-Stop: 0 1 2 6
# Short-Description: Network monitor Nagios
# Description: Starts and stops the Nagios monitor
# used to provide network services status for hosts,
# services and networks.
### END INIT INFO
. /etc/rc.status
NAGIOS_BIN=/usr/sbin/nagios
NAGIOS_CFG=/etc/nagios/nagios.cfg
NAGIOS_SYSCONFIG=/etc/sysconfig/nagios
NAGIOS_CFG_ERR_LOG=/var/log/nagios/config.err
# Read config and log errors in logfile
function config_check () {
$NAGIOS_BIN -v $NAGIOS_CFG > /dev/null 2>&1
if [ $? -eq 0 ]; then
return 0
else
$NAGIOS_BIN -v $NAGIOS_CFG > $NAGIOS_CFG_ERR_LOG 2>&1
return 1
fi
}
# grab a config option
function get_var() {
if [ -n "$2" ]; then
set -- `grep ^$1 $2 | sed 's@=@ @' | tr -d '[:cntrl:]'`
else
set -- `grep ^$1 $NAGIOS_CFG | sed 's@=@ @' | tr -d '[:cntrl:]'`
fi
shift # remove first ARG => search-string
echo $*
}
# check some default files and directories
function check_files() {
# set default access rights for files and directories
for file in $check_result_path $log_file $state_retention_file $status_file; do
if [ -e $file ]; then
touch $file
chown $nagios_user:$nagios_cmdgrp $file
fi
done
chmod 640 $resource_file
chown $nagios_user:$nagios_cmdgrp $resource_file
# remove some perhaps left over files
for file in $command_file $lock_file $status_file $temp_file /var/lock/subsys/nagios; do
test -f $file && rm -f $file
done
}
# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
test -x $NAGIOS_BIN || { echo "$NAGIOS_BIN not installed";
if [ "$1" = "stop" ]; then exit 0;
else exit 5; fi; }
# Check for existence of needed config file
test -r $NAGIOS_CFG || { echo "$NAGIOS_CFG not existing";
if [ "$1" = "stop" ]; then exit 0;
else exit 6; fi; }
# Check for existence of sysconfig file and read it
test -r $NAGIOS_SYSCONFIG || { echo "$NAGIOS_SYSCONFIG not existing";
if [ "$1" = "stop" ]; then exit 0;
else exit 6; fi; }
. $NAGIOS_SYSCONFIG
# set values for sysconfig vars
if [ -n "$NAGIOS_NICELEVEL" ]; then
NICELEVEL="-n $NAGIOS_NICELEVEL"
else
NICELEVEL="-n 0"
fi
if [ -z "$NAGIOS_TIMEOUT" ]; then
NAGIOS_TIMEOUT=10
fi
#
# get variables from config file
#
nagios_user="$(get_var nagios_user)"
lock_file="$(get_var lock_file)"
status_file="$(get_var status_file)"
log_file="$(get_var log_file)"
temp_file="$(get_var temp_file)"
state_retention_file="$(get_var state_retention_file)"
command_file="$(get_var command_file)"
resource_file="$(get_var resource_file)"
object_cache_file="$(get_var object_cache_file)"
check_result_path="$(get_var check_result_path)"
#
# use default values if above check doesn't work
#
: ${nagios_user:=nagios}
: ${nagios_cmdgrp:=nagcmd}
: ${resource_file:=/etc/nagios/resource.cfg}
# check ownership files
: ${check_result_path:=/var/spool/nagios}
: ${log_file:=/var/log/nagios/nagios.log}
: ${state_retention_file:=/var/log/nagios/retention.dat}
: ${status_file:=/var/log/nagios/status.dat}
# files to remove
: ${command_file:=/var/spool/nagios/nagios.cmd}
: ${lock_file:=/var/run/nagios.pid}
: ${object_cache_file:=/var/lib/nagios/objects.cache}
: ${temp_file:=/var/log/nagios/nagios.tmp}
# Reset status of this service
rc_reset
case "$1" in
start)
echo -n "Starting nagios "
config_check
if [ $? -eq 0 ]; then
# check if nagios is already running
NAGPID=$(pidof $NAGIOS_BIN)
if [ -n "$NAGPID" ]; then
echo "- Error: looks like nagios is still running with PID $NAGPID"
echo -n "- trying to kill previous nagios process"
kill -9 $NAGPID
sleep 2
fi
check_files
startproc $NICELEVEL -p $lock_file $NAGIOS_BIN -d $NAGIOS_CFG
else
echo "- Error in configuration files"
echo -n "- please read $NAGIOS_CFG_ERR_LOG"
rc_failed
fi
rc_status -v
;;
stop)
echo -n "Shutting down nagios "
# we have to wait for nagios to exit and remove its
# own Lockfile, otherwise a following "start" could
# happen, and then the exiting nagios will remove the
# new Lockfile, allowing multiple nagios daemons
# to (sooner or later) run - John Sellens
if checkproc $NAGIOS_BIN ; then
killproc -p $lock_file -TERM $NAGIOS_BIN
sleep 1
if [ -e $lock_file ]; then
echo "Warning - nagios did not exit in a timely manner. Waiting..."
while [ -e $lock_file ] && [ $NAGIOS_TIMEOUT -gt 0 ] ; do
sleep 1
NAGIOS_TIMEOUT=$[$NAGIOS_TIMEOUT-1]
echo -n '.'
[ $NAGIOS_TIMEOUT -eq 41 ] && echo
done
fi
if checkproc $NAGIOS_BIN ; then
killproc -p $lock_file -SIGKILL $NAGIOS_BIN
echo -n "Warning: nagios killed"
fi
else
echo -n "nagios not running"
rc_failed 7
fi
check_files
rc_reset
rc_status -v
;;
try-restart)
## Do a restart only if the service was active before.
## Note: try-restart is now part of LSB (as of 1.9).
## RH has a similar command named condrestart.
$0 status
if test $? = 0; then
$0 restart
else
rc_reset # Not running is not a failure.
fi
# Remember status and be quiet
rc_status
;;
restart)
$0 stop
$0 start
rc_status
;;
reload|force-reload)
echo -n "Reload service nagios "
config_check
if [ $? -eq 0 ]; then
echo -n "Passed configuration check - reloading..."
killproc -HUP -p $lock_file $NAGIOS_BIN
else
echo "- Error in configuration files"
echo -n "- aborting reload - please read $NAGIOS_CFG_ERR_LOG"
rc_failed
fi
rc_status -v
;;
status)
echo -n "Checking for nagios "
checkproc -p $lock_file $NAGIOS_BIN
rc_status -v
;;
check|check_verbose)
echo "Running configuration check..."
config_check
if [ $? -eq 0 ]; then
echo -n "- Passed configuration check"
test -f $NAGIOS_CFG_ERR_LOG && rm $NAGIOS_CFG_ERR_LOG
rc_reset
else
echo "- Error in configuration files"
if [ $1 == "check_verbose" ]; then
cat $NAGIOS_CFG_ERR_LOG
else
echo -n "- please read $NAGIOS_CFG_ERR_LOG"
fi
rc_failed
fi
rc_status -v
;;
*)
echo "Usage: $0 {start|stop|status|try-restart|restart|reload|check|check_verbose}"
exit 1
;;
esac
rc_exit
