icinga/rcicinga

#! /bin/sh
# Copyright (c) 1995-2001 SuSE GmbH Nuernberg, Germany.
#                    2002 SuSE Linux AG Nuernberg, Germany.
#                    2007 SuSE Linux GmbH Nuernberg, Germany.
#                    2010 SUSE LINUX Products GmbH, Nuernberg, Germany
#
# Author: Wolfgang Rosenauer, Lars Vogdt
#
#
# /etc/init.d/icinga
#
#   and symbolic its link
#
# /usr/sbin/rcicinga
#
# System startup script for icinga
#
### BEGIN INIT INFO
# Provides:       icinga monitoring_daemon
# Required-Start: $local_fs $remote_fs $syslog $network
# Required-Stop:  $local_fs $remote_fs $syslog $network
# Should-Start:   $time sendmail httpd2 $named cron ido2db
# Should-Stop:    sendmail ido2db
# Default-Start:  3 5
# Default-Stop:   0 1 2 6
# Short-Description: Network monitor Icinga
# Description:    Starts and stops the Icinga monitor
#   used to provide network services status for hosts,
#   services and networks.
### END INIT INFO

. /etc/rc.status

ICINGA_BIN='/usr/sbin/icinga'
ICINGA_CFG='/etc/icinga/icinga.cfg'
ICINGA_SYSCONFIG='/etc/sysconfig/icinga'
ICINGA_CFG_ERR_LOG='/var/log/icinga/config.err'
ICINGA_DAEMONCHK='/usr/lib/icinga/cgi/daemonchk.cgi'

# Read config and log errors in logfile
config_check() {
    case "$1" in
        verbose)
            $ICINGA_BIN -v "$ICINGA_CFG" >"$ICINGA_CFG_ERR_LOG" 2>&1
            if [ $? -eq 0 ]; then
                return 0
            else
                return 1
            fi
        ;;
        *)
            $ICINGA_BIN -v "$ICINGA_CFG" >/dev/null 2>&1
            if [ $? -eq 0 ]; then
                return 0
            else
                $ICINGA_BIN -v "$ICINGA_CFG" >"$ICINGA_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 ^$1 "$ICINGA_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"; do
        test -f "$file" && rm -f "$file"
    done
}

check_lock_file() {
    PIDDIR=$(dirname $lock_file)
    case "$PIDDIR" in
        /var/run)
            if [ x"$icinga_user" != x"root" ]; then
                DATESTRING=`date +"%Y%m%d"`
                mv -f "$ICINGA_CFG" "$ICINGA_CFG-$DATESTRING"
                sed -e "s|^lock_file.*|pid_file=$lock_file|g" "$ICINGA_CFG-$DATESTRING" > "$ICINGA_CFG"
                /bin/logger -t rcicinga "Configured $lock_file in $ICINGA_CFG moved to $lock_file. Backup is $ICINGA_CFG-$DATESTRING"
                test -f "$lock_file" && rm -f "$lock_file"
                install -d -m755 -o$icinga_user -g$icinga_group $(dirname "$lock_file")
            else
                test -d "$PIDDIR" || mkdir -p "$PIDDIR"
            fi
        ;;
        *)
            install -d -m755 -o$icinga_user -g$icinga_group $(dirname "$lock_file")
    esac
}

# Check for missing binaries (stale symlinks should not happen)
# Note: Special treatment of stop for LSB conformance
test -x "$ICINGA_BIN" || { echo "$ICINGA_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 "$ICINGA_CFG" || { echo "$ICINGA_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 "$ICINGA_SYSCONFIG" || { echo "$ICINGA_SYSCONFIG not existing or readable.";
    if [ "$1" = "stop" ]; then exit 0;
    else exit 6; fi; }

. "$ICINGA_SYSCONFIG"

# set values for sysconfig vars
if [ -n "$ICINGA_NICELEVEL" ]; then
    NICELEVEL="-n $ICINGA_NICELEVEL"
else
    NICELEVEL="-n 0"
fi
if [ -z "$ICINGA_TIMEOUT" ]; then
    ICINGA_TIMEOUT=10
fi

#
# get variables from config file
#
icinga_user="$(get_var icinga_user)"
icinga_group="$(get_var icinga_group)"
lock_file="$(get_var lock_file)"
status_file="$(get_var status_file)"
log_file="$(get_var log_file)"
temp_file="$(get_var temp_file)"
temp_path="$(get_var temp_path)"
state_retention_file="$(get_var state_retention_file)"
command_file="$(get_var command_file)"
resource_file="$(get_var resource_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
#
: ${icinga_user:=icinga}
: ${icinga_group:=icinga}
: ${icinga_cmdgrp:=icingacmd}
: ${resource_file:=/etc/icinga/resource.cfg}
# check ownership files
: ${check_result_path:=/var/spool/icinga/checkresults}
: ${log_file:=/var/log/icinga/icinga.log}
: ${state_retention_file:=/var/spool/icinga/retention.dat}
: ${status_file:=/var/spool/icinga/status.dat}
: ${check_external_commands:=0}
: ${temp_path:=/var/run/icinga/tmp}
: ${temp_file:=/var/run/icinga/icinga.tmp}
# files to remove
: ${command_file:=/var/run/icinga/icinga.cmd}
: ${lock_file:=/var/run/icinga/icinga.pid}

# Reset status of this service
rc_reset

case "$1" in
    start)
        echo -n "Starting Icinga "
        # create checkresult dir if missing
        if [ ! -d "$check_result_path" ]; then
            mkdir -p "$check_result_path"
            chown --no-dereference $icinga_user:$icinga_group "$check_result_path"
            chmod 775 "$check_result_path"
        fi
		if [ ! -d "$temp_path" ]; then
			case "$temp_path" in
				/var/run/icinga/tmp)
					install -d -m775 -o$icinga_user -g$icinga_group "$temp_path"
				;;
				*)
					/bin/logger -t rcicinga "$temp_path does not exist - creating now"
					install -d -m775 -o$icinga_user -g$icinga_group "$temp_path"
				;;
			esac
		fi
        config_check
        if [ $? -eq 0 ]; then
            # check if icinga is already running
            ICINGAPID=$(pidof "$ICINGA_BIN")
            if [ -z "$ICINGAPID" ]; then
                check_files
                check_lock_file
            fi
            startproc $NICELEVEL -p "$lock_file" "$ICINGA_BIN" -d "$ICINGA_CFG"
            if [ "$check_external_commands" != 0 ]; then
                while [ ! -e "$command_file" ] && [ $ICINGA_TIMEOUT -gt 0 ]; do
                    sleep 1
                    ICINGA_TIMEOUT=$(($ICINGA_TIMEOUT - 1))
                done
                chgrp --no-dereference $icinga_cmdgrp "$command_file"
            fi
        else
            echo "Error in configuration - please read $ICINGA_CFG_ERR_LOG"
            rc_failed
        fi
        rc_status -v
    ;;
    stop)
        echo -n "Shutting down Icinga "
        # we have to wait for icinga to exit and remove its
        # own Lockfile, otherwise a following "start" could
        # happen, and then the exiting icinga will remove the
        # new Lockfile, allowing multiple icinga daemons
        # to (sooner or later) run - John Sellens
        if checkproc "$ICINGA_BIN" ; then
            killproc -p "$lock_file" -TERM "$ICINGA_BIN"
            sleep 1
            if [ -e "$lock_file" ]; then
                echo "Warning - Icinga did not exit in a timely manner. Waiting..."
                while [ -e "$lock_file" ] && [ $ICINGA_TIMEOUT -gt 0 ] ; do
                    sleep 1
                    ICINGA_TIMEOUT=$(($ICINGA_TIMEOUT - 1))
                    echo -n '.'
                    [ $ICINGA_TIMEOUT -eq 41 ] && echo
                done
            fi
            if checkproc "$ICINGA_BIN" ; then
                killproc -p "$lock_file" -SIGKILL "$ICINGA_BIN"
                echo -n "Warning: Icinga killed"
            fi
        else
            echo -n "Icinga 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 Icinga "
        config_check
        if [ $? -eq 0 ]; then
            echo -n "Passed configuration check - reloading..."
            killproc -HUP -p "$lock_file" "$ICINGA_BIN"
        else
            echo "- Error in configuration files"
            echo -n "- aborting reload - please read $ICINGA_CFG_ERR_LOG"
            rc_failed
        fi
        rc_status -v
    ;;
    status)
        echo -n "Checking for Icinga "
        if [ -x "$ICINGA_DAEMONCHK" ]; then
            if "$ICINGA_DAEMONCHK" -l "$lock_file"; then
                rc_failed 0
            else
                rc_failed 1
            fi
        else
            checkproc -p "$lock_file" "$ICINGA_BIN"
        fi
        rc_status -v
    ;;
    check)
        echo -n "Starting configuration check "
        config_check
        if [ $? -eq 0 ]; then
            echo "- passed configuration check"
            test -f $ICINGA_CFG_ERR_LOG && rm $ICINGA_CFG_ERR_LOG
            rc_reset
        else
            echo "- detected Error in configuration files"
            echo "Please read $ICINGA_CFG_ERR_LOG"
            rc_failed
        fi
        rc_status -v
    ;;
    check_verbose|show-errors)
        echo "Running verbose configuration check..."
        config_check verbose
        exitcode=$?
        cat "$ICINGA_CFG_ERR_LOG"
        rc_failed $exitcode
        rc_status -v
        rc_exit
    ;;
    *)
        echo "Usage: $0 {start|stop|status|try-restart|restart|reload|check|check_verbose|show-errors}"
        exit 1
        ;;
esac
rc_exit