Current File : //etc/rc2.d/S99opsview-agent

#! /bin/sh 
#
#
# AUTHORS:
#  Copyright (C) 2003-2014 Opsview Limited. All rights reserved
#
#    This file is part of Opsview
#
#    Opsview is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    Opsview is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with Opsview; if not, write to the Free Software
#    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#

### BEGIN INIT INFO
# Provides:          opsview-agent
# Required-Start:    $local_fs $remote_fs $syslog $named $network $time
# Required-Stop:     $local_fs $remote_fs $syslog $named $network
# Should-Start:
# Should-Stop:
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/Stop the Nagios remote plugin execution daemon
### END INIT INFO
### CHKCONFIG INFO
# chkconfig: 345 99 01
# description: Control script for Opsview
# processname: nrpe
### END CHKCONFIG INFO

#########
#
# NOTE: To work correctly for HA systems, MUST conform to
#       http://clusterlabs.org/doc/en-US/Pacemaker/1.0/html/Pacemaker_Explained/ap-lsb.html
#
#########

# Switch to nagios if run as root
id | grep "uid=0(" >/dev/null
if [ $? = "0" ] ; then
  case "$0" in
    /*) cmd="$0" ;;
    *) cmd=`which $0`
    case "$cmd" in
      /*) ;;
      *) cmd="$PWD/$cmd";;
    esac
  ;;
  esac
  exec su - nagios -c "$cmd $@"
fi

PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=opsview-agent
DESC=opsview-agent
AGENT_BASE=/usr/local/nagios
DAEMON=$AGENT_BASE/bin/nrpe
CONFIG=$AGENT_BASE/etc/nrpe.cfg

# get the correct PID file out of the config file
if [ ! -f $CONFIG ]; then
  echo "$CONFIG doesn't exist - exiting"
  exit 1
fi

PIDFILE=`grep "^pid_file=" $CONFIG | awk -F= '{print $2}'`
if [ "x$PIDFILE" = "x" ]; then
    echo "pid_file not set in $CONFIG - exiting"
    exit 1
fi

die() { echo "$2"; exit $1; }

getpid()
{
  if [ -f $PIDFILE ]; then
    cat $PIDFILE
  fi
}

status()
{
  PID=`getpid`
  if [ "x$PID" != "x" ]; then
    if kill -0 $PID 2>/dev/null; then
      # check to see if the given pid is nrpe
      process="`ps -o comm -p $PID | tail -1`"
      if [ "$process" = "nrpe" ] ||
         [ "$process" = "/usr/local/nagios/bin/nrpe" ]
      then
        echo "NRPE is running as process $PID"
        return 0
      fi
    fi

    # BEWARE: if this is solaris global zone we may get more NRPE
    # processes than expected due to all the zones so don't do any 
    # more on Solaris systems to be on safe side
    uname -s | grep SunOS 1>/dev/null
    if [ $? = 0 ]; then
      echo "NRPE is not running"
      return 0
    fi

    # this section should cater for when:
    #   PID recorded AND (its an active AND its not nrpe) OR inactive pid

    # check to ensure its not on another pid
    PID=`ps -eo pid,comm | awk '$2 == "nrpe" {print $1}'`
    if [ "x$PID" != "x" ]; then
      # PID file is wrong for some reason, so update it
      if [ "`echo $PID | wc -w`" -gt 1 ]; then
        echo "FATAL: more than 1 nrpe process found:"
        echo $PID
        exit 1
      fi
      echo $PID > $PIDFILE
      echo "NRPE is running as process $PID"
      return 0
    fi
  fi

  echo "NRPE is not running"
  return 3
}

killproc_nrpe()
{
  PID=`getpid`
  if [ "x$PID" != "x" ]; then
    kill -0 $PID 2>/dev/null && kill $2 $PID
  fi

  # BEWARE: if this is solaris global zone we may get more NRPE
  # processes than expected due to all the zones so don't do any 
  # more on Solaris systems to be on safe side
  uname -s | grep SunOS 1>/dev/null
  if [ $? = 0 ]; then
    return
  fi

  # also check to ensure nrpe isnt running on another pid
  PID=`ps -eo pid,comm | awk '$2 == "nrpe" {print $1}'`
  if [ "x$PID" != "x" ]; then
    kill $2 $PID
  fi
}

start()
{
  if [ ! -f $CONFIG ]; then
    echo "No nrpe.cfg - exiting"
    exit 1
  fi

  # test to see if the pid file can be created
  touch -a $PIDFILE 1>/dev/null 2>&1
  if [ $? -ne 0 ]; then
    echo "Cannot write to $PIDFILE - exiting"
    exit 1
  fi
  # if touch created an remove empty file, remove it
  test ! -s $PIDFILE && rm -f $PIDFILE

  status nrpe > /dev/null && die 0 "NRPE is already running"
  
  $DAEMON -c $CONFIG -d

  echo "NRPE started"
}

stop()
{
  killproc_nrpe
  if ! status nrpe >/dev/null ; then
    echo "NRPE stopped"
  else
    echo "NRPE is not running"
  fi
  return 0
}

test -x $DAEMON || exit 0

case "$1" in
  status)
    status ; exit $?
  ;;

  start)
    start
  ;;

  stop)
    stop
  ;;

  restart)
    stop
    sleep 1
    start
  ;;

  *)
    echo "Usage: $N {start|stop|restart|status}" 
    exit 1
  ;;
esac

exit 0