我正在为kibana
编写一个init.d脚本从非脚本运行部分,但问题是如果我运行运行服务kibana启动即使服务正在运行然后第二个实例启动困扰我我想在启动服务之前添加检查,如果服务正在运行然后不启动第二审。我试图检查“/ var / lock / subsys / kibana”但是没有用。这是我的剧本:
#!/bin/bash
KIBANA_PATH="/opt/kibana4"
DESC="Kibana Daemon"
NAME=kibana
DAEMON=bin/kibana
CONFIG_DIR=$KIBANA_PATH/config/kibana.yml
LOGFILE=/var/log/kibana/kibana.log
#ARGS="agent --config ${CONFIG_DIR} --log ${LOGFILE}"
SCRIPTNAME=/etc/init.d/kibana
PIDFILE=/var/run/kibana.pid
base=kibana
# Exit if the package is not installed
if [ ! -x "$KIBANA_PATH/$DAEMON" ]; then
{
echo "Couldn't find $DAEMON"
exit 99
}
fi
. /etc/init.d/functions
#
# Function that starts the daemon/service
#
do_start()
{
cd $KIBANA_PATH && \
($DAEMON >> $LOGFILE &) && \
success || failure;
}
set_pidfile()
{
pgrep -f "kibana.jar" > $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 $DESC: "
do_start
touch /var/lock/subsys/$NAME
set_pidfile
;;
stop)
echo -n "Stopping $DESC: "
do_stop
rm /var/lock/subsys/$NAME
rm $PIDFILE
;;
restart|reload)
echo -n "Restarting $DESC: "
do_stop
do_start
touch /var/lock/subsys/$NAME
set_pidfile
;;
status)
echo $DESC
status -p $PIDFILE
echo $!
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|status|restart}" >&2
exit 3
;;
esac
echo
exit 0
这里有什么帮助吗?
由于
答案 0 :(得分:2)
启动服务时使用lockfile -r0 /path/to/lock/file.lck
。然后,每个新访问将重试零次以创建文件。因此,如果该命令失败则不执行任何操作或以其他方式启动服务。
lockfile -r0 /path/to/lock/file.lck
if [ "$?" == "0" ]; then
echo "lock does not exist. enter devils land :)"
fi
答案 1 :(得分:0)
以下是大多数init.d
脚本使用此功能的非常标准的实现。
start () {
[ -d /var/run/nscd ] || mkdir /var/run/nscd
[ -d /var/db/nscd ] || mkdir /var/db/nscd
echo -n $"Starting $prog: "
daemon /usr/sbin/nscd $NSCD_OPTIONS
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/nscd
return $RETVAL
}
...
# See how we were called.
case "$1" in
start)
[ -e /var/lock/subsys/nscd ] || start
RETVAL=$?
;;
...