[Pacemaker] syslog-ng as resource / how to make sure it gets restarted

[Koch, Sebastian]

Hello,

 

i now edited the syslog-ng Debian Init Script to fit the LSB spec. Now
it should be cluster ready. See the new Script version below. Feedback
is appreciated and I hope it helps somebody.

 

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#! /bin/sh

### BEGIN INIT INFO

# Provides:          syslog

# Required-Start:    $local_fs $network $time $remote_fs

# Required-Stop:     $local_fs $network $time $remote_fs

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description: Starting system logging daemon

# Description:       Starting syslog-NG, the next generation

#  syslog daemon.

### END INIT INFO#

#

# skeleton      example file to build /etc/init.d/ scripts.

#               This file should be used to construct scripts for
/etc/init.d.

#

#               Written by Miquel van Smoorenburg <miquels at cistron.nl>.

#               Modified for Debian GNU/Linux

#               by Ian Murdock <imurdock at gnu.ai.mit.edu>.

#

# Version:      @(#)skeleton  1.8  03-Mar-1998  miquels at cistron.nl

# This file was customized by SZALAY Attila <sasa at debian.org>

#

# EDIT: This file was editied by Sebastian koch, Fa. NETZWERK GmbH

# to fit the LSB spec in order to be cluster-ready (pacemaker)

#

 

#we source /etc/default/syslog-ng if exists

[ -r /etc/default/syslog-ng ] && . /etc/default/syslog-ng

 

# stop syslog-ng before changing its PID file!

PIDFILE="/var/run/syslog-ng.pid"

 

SYSLOGNG="/usr/sbin/syslog-ng"

NAME="syslog-ng"

 

PATH=/sbin:/bin:/usr/sbin:/usr/bin

test -f $SYSLOGNG || exit 0

 

# Define LSB log_* functions.

# Depend on lsb-base (>= 3.0-6) to ensure that this file is present.

. /lib/lsb/init-functions

 

case "x$CONSOLE_LOG_LEVEL" in

  x[1-8])

    dmesg -n $CONSOLE_LOG_LEVEL

    ;;

  x)

    ;;

  *)

    log_warning_msg "CONSOLE_LOG_LEVEL is of unaccepted value."

    ;;

esac

 

if [ -n "$KERNEL_RINGBUF_SIZE" ]

then

  log_warning_msg "KERNEL_RINGBUF_SIZE option is useless and therefore
removed."

fi

 

check_started() {

  if [ -f "$PIDFILE" ]; then

      pid="$(cat $PIDFILE)"

    if [ "$pid" ] && kill -0 $pid >/dev/null; then

          return 0    # Is started

      fi

  fi

  return 1      # Isn't started

}

 

create_xconsole() {

  if [ ! -e /dev/xconsole ]

  then

    mknod -m 640 /dev/xconsole p

  fi

}

 

syslogng_start() {

  if ! check_started; then

    log_daemon_msg "Starting system logging" "$NAME"

    create_xconsole

    start-stop-daemon --start --quiet --exec "$SYSLOGNG" \

                      --pidfile "$PIDFILE" -- -p "$PIDFILE"

    RET="$?"

    log_end_msg $RET

    return $RET

  else

    log_warning_msg "already running!"

  fi

  return $ret

}

 

syslogng_stop() {

  if check_started; then

    log_daemon_msg "Stopping system logging" "$NAME"

    start-stop-daemon --stop --quiet --name "$NAME" --retry 3 \

                      --pidfile "$PIDFILE"

    RET="$?"

    log_end_msg $RET

    rm -f "$PIDFILE"

    return $RET

  else

    log_warning_msg "isn't running!"

  fi

  return $ret

}

 

syslogng_reload() {

    log_daemon_msg "Reload system logging" "$NAME"

    if $SYSLOGNG -s

    then

 

      start-stop-daemon --stop --signal 1 --quiet --exec "$SYSLOGNG" \

                        --pidfile "$PIDFILE"

      RET="$?"

      log_end_msg $RET

      return $RET

    else

      log_end_msg 1

      return 1

    fi

}

 

DAEMON=$NAME;

 

syslogng_status()

{

  log_action_begin_msg "checking $DAEMON"

  if check_started; then

    log_action_end_msg 0 "running"

  else

    if [ -e "$PIDFILE" ]; then

      log_action_end_msg 1 "$DAEMON failed"

      exit 1

    else

      log_action_end_msg 0 "not running"

      exit 3

    fi

  fi

}

 

case "$1" in

  start)

    syslogng_start || exit 1

    ;;

  stop)

    syslogng_stop || exit 1

    ;;

  status)

    syslogng_status || exit 1

    ;;

  reload|force-reload)

    syslogng_reload || exit 1

    ;;

  restart)

    syslogng_stop

    syslogng_start || exit 1

    ;;

  *)

    echo "Usage: /etc/init.d/$NAME
{start|stop|restart|status|reload|force-reload}" >&2

    exit 1

    ;;

esac

 

exit 0

 

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Sebastian Koch



 

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