启动logstash java脚本的bash脚本

Question

我正在使用 AWS EC2 和需要运行的自定义脚本：

java -jar logstash-1.3.3-flatjar.jar agent -f shipper.conf

但它似乎只有在我 ssh 进入服务器并手动运行后才能工作。 我找到了这个链接：“Linux Launch java program on startup (EC2 instance)”

但这对我没有帮助。如何让我的 bash 脚本运行此命令？我什至尝试创建第二个 shell 脚本，它只执行我的 logstash java 脚本。

Answer 1

无需自己编写initscript，logstash网站provides代码。复制/etc/init.d/logstash中的脚本，然后运行chkconfig --add logstash和chkconfig logstash on启用它；然后你可以像往常一样使用service 命令来控制它。 请注意，您需要编辑一个环境变量配置部分以适应您的系统。

#! /bin/sh
#
#   /etc/rc.d/init.d/logstash
#
#   Starts Logstash as a daemon
#
# chkconfig: 2345 20 80
# description: Starts Logstash as a daemon
# pidfile: /var/run/logstash-agent.pid

### BEGIN INIT INFO
# Provides: logstash
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Default-Start: 2 3 4 5
# Default-Stop: S 0 1 6
# Short-Description: Logstash
# Description: Starts Logstash as a daemon.
# Modified originally from https://gist.github.com/2228905#file_logstash.sh
### END INIT INFO

### CONFIGURATION 
# Amount of memory for Java
#JAVAMEM=256M
# Location of logstash files
LOCATION=/opt/logstash
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
DESC="Logstash Daemon"
NAME=java
DAEMON=$(which java)
CONFIG_DIR=/opt/logstash/logstash.conf
LOGFILE=/opt/logstash/logstash.log
JARNAME=logstash-monolithic.jar
#ARGS="-Xmx$JAVAMEM -Xms$JAVAMEM -jar ${JARNAME} agent --config ${CONFIG_DIR} --log ${LOGFILE} --grok-patterns-path ${PATTERNSPATH}"
ARGS="-jar ${JARNAME} agent --config ${CONFIG_DIR} --log ${LOGFILE}"
SCRIPTNAME=/etc/init.d/logstash
PIDFILE=/var/run/logstash.pid
base=logstash
### END CONFIGURATION    

# Exit if the package is not installed
if [ ! -x "$DAEMON" ]; then
{
  echo "Couldn't find $DAEMON"
  exit 99
}
fi

. /etc/init.d/functions

#
# Function that starts the daemon/service
#
do_start()
{
  cd $LOCATION && \
  ($DAEMON $ARGS &) \
  && success || failure
}

set_pidfile()
{
  pgrep -f "$DAEMON[[:space:]]*$ARGS" > $PIDFILE
}

#
# Function that stops the daemon/service
#
do_stop()
{
  pid=`cat $PIDFILE`
  if checkpid $pid 2>&1; then
       # TERM first, then KILL if not dead
       kill -TERM $pid >/dev/null 2>&1
       usleep 100000
       if checkpid $pid && sleep 1 &&
                 checkpid $pid && sleep $delay &&
                 checkpid $pid ; then
            kill -KILL $pid >/dev/null 2>&1
            usleep 100000
       fi
   fi
   checkpid $pid
   RC=$?
   [ "$RC" -eq 0 ] && failure $"$base shutdown" || success $"$base shutdown"

}

case "$1" in
  start)
    echo -n "Starting $DESC: "
    do_start
    touch /var/lock/subsys/$JARNAME
    set_pidfile
    ;;
  stop)
    echo -n "Stopping $DESC: "
    do_stop
    rm /var/lock/subsys/$JARNAME
    rm $PIDFILE
    ;;
  restart|reload)
    echo -n ""Restarting $DESC: "
    do_stop
    do_start
    touch /var/lock/subsys/$JARNAME
    set_pidfile
    ;;
  status)
    status -p $PIDFILE
    ;;
  *)
    echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
    exit 3
    ;;
esac

echo
exit 0