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.
# 2010-2012 SUSE LINUX Products 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 monitoring_daemon
# Required-Start: $local_fs $remote_fs $syslog $network
# Required-Stop: $local_fs $remote_fs $syslog $network
# Should-Start: $time sendmail httpd2 xntpd $named cron ndo2db
# Should-Stop: sendmail ndo2db
# 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_PIDFILE='/var/run/nagios/nagios.pid'
NAGIOS_SYSCONFIG='/etc/sysconfig/nagios'
NAGIOS_CFG_ERR_LOG='/var/log/nagios/config.err'
NAGIOS_DAEMONCHK='/usr/lib/nagios/cgi/daemonchk.cgi'
# Read config and log errors in logfile
config_check () {
case "$1" in
verbose)
$NAGIOS_BIN -v "$NAGIOS_CFG" >"$NAGIOS_CFG_ERR_LOG" 2>&1
if [ $? -eq 0 ]; then
return 0
else
return 1
fi
;;
*)
$NAGIOS_BIN -v "$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
;;
esac
}
# grab a config option
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 $*
}
# check some default files and directories
check_files() {
# remove some perhaps left over files
for file in "$command_file" "$lock_file" "$status_file" "$temp_file" "/var/lock/subsys/nagios"; do
test -f "$file" && rm -f "$file"
done
# set default access rights for files and directories
for file in "$log_file" "$state_retention_file" "$status_file"; do
if [ ! -e "$file" ]; then
touch "$file"
fi
chown $nagios_user:$nagios_cmdgrp "$file"
done
for dir in "$check_result_path" $(dirname $status_file); do
if [ ! -d "$dir" ]; then
mkdir -p "$dir"
fi
chown $nagios_user:$nagios_cmdgrp "$dir"
done
chmod 660 "$resource_file"
chown $nagios_user:$nagios_cmdgrp "$resource_file"
}
check_lock_file() {
PIDDIR=$(dirname $lock_file)
case "$PIDDIR" in
/var/run)
if [ x"$nagios_user" != x"root" ]; then
DATESTRING=`date +"%Y%m%d"`
mv -f "$NAGIOS_CFG" "$NAGIOS_CFG-$DATESTRING"
sed -e "s|^lock_file.*|pid_file=$NAGIOS_PIDFILE|g" "$NAGIOS_CFG-$DATESTRING" > "$NAGIOS_CFG"
/bin/logger -t rcnagios "Configured $lock_file in $NAGIOS_CFG moved to $NAGIOS_PIDFILE. Backup is $NAGIOS_CFG-$DATESTRING"
test -f "$lock_file" && rm -f "$lock_file"
install -d -m755 -o$nagios_user -g$nagios_cmdgrp $(dirname "$NAGIOS_PIDFILE")
else
test -d "$PIDDIR" || mkdir -p "$PIDDIR"
fi
;;
*)
install -d -m755 -o$nagios_user -g$nagios_cmdgrp $(dirname "$NAGIOS_PIDFILE")
esac
}
# 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 or not executable.";
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 or readable.";
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 or readable.";
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)"
check_external_commands="$(get_var check_external_commands)"
#
# 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}
: ${check_external_commands:=0}
# files to remove
: ${command_file:=/var/spool/nagios/nagios.cmd}
: ${lock_file:=/var/run/nagios/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
check_lock_file
startproc $NICELEVEL -p "$lock_file" "$NAGIOS_BIN" -d "$NAGIOS_CFG"
if [ "$check_external_commands" != 0 ]; then
while [ ! -e "$command_file" ] && [ $NAGIOS_TIMEOUT -gt 0 ]; do
sleep 1
NAGIOS_TIMEOUT=$(($NAGIOS_TIMEOUT-1))
done
chgrp $nagios_cmdgrp "$command_file"
chown $nagios_user:$nagios_cmdgrp "$check_result_path"
fi
else
echo "Error in configuration - 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.
$0 status
if test $? = 0; then
$0 restart
else
rc_reset # Not running is not a failure.
fi
rc_status
;;
restart)
$0 check
$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 $NAGIOS_CFG_ERR_LOG"
rc_failed
fi
rc_status -v
;;
status)
echo -n "Checking for Nagios: "
if [ -x "$NAGIOS_DAEMONCHK" ]; then
if "$NAGIOS_DAEMONCHK" -l "$lock_file"; then
rc_failed 0
else
rc_failed 1
fi
else
checkproc -p "$lock_file" "$NAGIOS_BIN"
fi
rc_status -v
;;
check)
echo -n "Starting configuration check "
config_check
if [ $? -eq 0 ]; then
echo "- passed configuration check"
test -f $NAGIOS_CFG_ERR_LOG && rm $NAGIOS_CFG_ERR_LOG
rc_reset
else
echo "- detected Error in configuration files"
echo "Please read $NAGIOS_CFG_ERR_LOG"
rc_failed
fi
rc_status -v
;;
check_verbose)
echo "Running verbose configuration check..."
config_check verbose
exitcode=$?
cat "$NAGIOS_CFG_ERR_LOG"
rc_failed $exitcode
rc_status -v
rc_exit
;;
*)
echo "Usage: $0 {start|stop|status|try-restart|restart|reload|check|check_verbose}"
exit 1
;;
esac
rc_exit
