File rcnagios of Package nagios33

#! /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 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_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 660 $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