logstash服务启动脚本

最近在弄ELK，发现logstash没有sysv类型的服务启动脚本，于是按照网上一个老外提供的模板自己进行修改

#添加用户

useradd logstash -M -s /sbin/nologin

mkdir /var/log/logstash/

chown -R logstash:logstash /var/log/logstash/

chown -R logstash:logstash /usr/local/logstash-2.0.0/

 

 

vi /etc/init.d/logstash

#!/bin/sh

# Init script for logstash

# Maintained by Elasticsearch

# Generated by pleaserun.

# Implemented based on LSB Core 3.1:

#   * Sections: 20.2, 20.3

#

### BEGIN INIT INFO

# Provides:          logstash

# Required-Start:    $remote_fs $syslog

# Required-Stop:     $remote_fs $syslog

# Default-Start:     2 3 4 5

# Default-Stop:      0 1 6

# Short-Description:

# Description:        Starts Logstash as a daemon.

### END INIT INFO

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

export PATH

if [ `id -u` -ne 0 ]; then

   echo "You need root privileges to run this script"

   exit 1

fi

name=logstash

pidfile="/var/run/$name.pid"

LS_USER=logstash

LS_GROUP=logstash

LS_HOME=/var/lib/logstash

LS_HEAP_SIZE="500m"

LS_LOG_DIR=/var/log/logstash

LS_LOG_FILE="${LS_LOG_DIR}/$name.log"

LS_CONF_DIR=/etc/logstash/conf.d

LS_OPEN_FILES=16384

LS_NICE=19

LS_OPTS=""

[ -r /etc/default/$name ] && . /etc/default/$name

[ -r /etc/sysconfig/$name ] && . /etc/sysconfig/$name

program=/opt/logstash/bin/logstash

args="agent -f ${LS_CONF_DIR} -l ${LS_LOG_FILE} ${LS_OPTS}"

start() {

  LS_JAVA_OPTS="${LS_JAVA_OPTS} -Djava.io.tmpdir=${LS_HOME}"

  HOME=${LS_HOME}

  export PATH HOME LS_HEAP_SIZE LS_JAVA_OPTS LS_USE_GC_LOGGING

  # chown doesn't grab the suplimental groups when setting the user:group - so we have to do it for it.

  # Boy, I hope we're root here.

  SGROUPS=$(id -Gn "$LS_USER" | tr " " "," | sed 's/,$//'; echo '')

  if [ ! -z $SGROUPS ]

  then

	EXTRA_GROUPS="--groups $SGROUPS"

  fi

  # set ulimit as (root, presumably) first, before we drop privileges

  ulimit -n ${LS_OPEN_FILES}

  # Run the program!

  nice -n ${LS_NICE} chroot --userspec $LS_USER:$LS_GROUP $EXTRA_GROUPS / sh -c "

    cd $LS_HOME

    ulimit -n ${LS_OPEN_FILES}

    exec \"$program\" $args

  " > "${LS_LOG_DIR}/$name.stdout" 2> "${LS_LOG_DIR}/$name.err" &

  # Generate the pidfile from here. If we instead made the forked process

  # generate it there will be a race condition between the pidfile writing

  # and a process possibly asking for status.

  echo $! > $pidfile

  echo "$name started."

  return 0

}

stop() {

  # Try a few times to kill TERM the program

  if status ; then

    pid=`cat "$pidfile"`

    echo "Killing $name (pid $pid) with SIGTERM"

    kill -TERM $pid

    # Wait for it to exit.

    for i in 1 2 3 4 5 ; do

      echo "Waiting $name (pid $pid) to die..."

      status || break

      sleep 1

    done

    if status ; then

      if [ "$KILL_ON_STOP_TIMEOUT" -eq 1 ] ; then

        echo "Timeout reached. Killing $name (pid $pid) with SIGKILL. This may result in data loss."

        kill -KILL $pid

        echo "$name killed with SIGKILL."

      else

        echo "$name stop failed; still running."

      fi

    else

      echo "$name stopped."

    fi

  fi

}

status() {

  if [ -f "$pidfile" ] ; then

    pid=`cat "$pidfile"`

    if kill -0 $pid > /dev/null 2> /dev/null ; then

      # process by this pid is running.

      # It may not be our pid, but that's what you get with just pidfiles.

      # TODO(sissel): Check if this process seems to be the same as the one we

      # expect. It'd be nice to use flock here, but flock uses fork, not exec,

      # so it makes it quite awkward to use in this case.

      return 0

    else

      return 2 # program is dead but pid file exists

    fi

  else

    return 3 # program is not running

  fi

}

force_stop() {

  if status ; then

    stop

    status && kill -KILL `cat "$pidfile"`

  fi

}

case "$1" in

  start)

    status

    code=$?

    if [ $code -eq 0 ]; then

      echo "$name is already running"

    else

      start

      code=$?

    fi

    exit $code

    ;;

  stop) stop ;;

  force-stop) force_stop ;;

  status)

    status

    code=$?

    if [ $code -eq 0 ] ; then

      echo "$name is running"

    else

      echo "$name is not running"

    fi

    exit $code

    ;;

  restart)

    stop && start

    ;;

  *)

    echo "Usage: $SCRIPTNAME {start|stop|force-stop|status|restart}" >&2

    exit 3

  ;;

esac

exit $?

 

chmod +x /etc/init.d/logstash

#设置开机启动

chkconfig --add logstash

chkconfig logstash on

如有不对的地方，欢迎大家拍砖o(∩_∩)o 

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