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nagios
rcnagios
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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 --no-dereference $nagios_user:$nagios_cmdgrp "$file" done for dir in "$check_result_path" $(dirname $status_file); do if [ ! -d "$dir" ]; then mkdir -p "$dir" fi chown --no-dereference $nagios_user:$nagios_cmdgrp "$dir" done chmod 660 "$resource_file" chown --no-dereference $nagios_user:$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 --no-dereference $nagios_cmdgrp "$command_file" chown --no-dereference $nagios_user:$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
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