python之supervisord啓動腳本

Supervisord 是用Python實現的一款很是實用的進程管理工具,在批量服務化管理時特別有效。能夠將非Daemon的應用轉爲daemon程序。關於supervisord的安裝和配置,在網上已經有不少現成的帖子,我這裏就不重複了。web

在centos和rhel的環境下,咱們通常是用chkconfig來管理服務的啓動中止、開機自啓動等。下面我列出Supervisord的服務腳本。vim

1. 執行以下命令:centos

vim /etc/init.d/supervisordbash

 2.輸入以下內容:工具

注意:該文件中的以下幾個變量,都須要根據你實際的目錄來改寫。this

PREFIX=/usr/localspa

SUPERVISORD=$PREFIX/bin/supervisord      ##supervisord   程序的安裝路徑rest

SUPERVISORCTL=$PREFIX/bin/supervisorctl  ##supervisorctl 程序的安裝路徑xml

PIDFILE=/var/supervisor/supervisord.pid   ##須要先建立/var/supervisor目錄進程

LOCKFILE=/var/supervisor/supervisord.lock

OPTIONS="-c /etc/supervisord.conf"   ##配置文件的路徑

#!/bin/bash
# # supervisord This scripts turns supervisord on # chkconfig: 345 83 04 # description: supervisor is a process control utility. It has a web based # xmlrpc interface as well as a few other nifty features. # # source function library . /etc/rc.d/init.d/functions set -a PREFIX=/usr/local SUPERVISORD=$PREFIX/bin/supervisord SUPERVISORCTL=$PREFIX/bin/supervisorctl PIDFILE=/var/supervisor/supervisord.pid LOCKFILE=/var/supervisor/supervisord.lock OPTIONS="-c /etc/supervisord.conf" # unset this variable if you don't care to wait for child processes to shutdown before removing the $LOCKFILE-lock WAIT_FOR_SUBPROCESSES=yes # remove this if you manage number of open files in some other fashion ulimit -n 96000 RETVAL=0 running_pid() {  # Check if a given process pid's cmdline matches a given name  pid=$1  name=$2  [ -z "$pid" ] && return 1  [ ! -d /proc/$pid ] && return 1  (cat /proc/$pid/cmdline | tr "\000" "\n"|grep -q $name) || return 1  return 0 } running() { # Check if the process is running looking at /proc # (works for all users)  # No pidfile, probably no daemon present  [ ! -f "$PIDFILE" ] && return 1  # Obtain the pid and check it against the binary name  pid=`cat $PIDFILE`  running_pid $pid $SUPERVISORD || return 1  return 0 } start() {   echo "Starting supervisord: "   if [ -e $PIDFILE ]; then   echo "ALREADY STARTED"   return 1  fi  # start supervisord with options from sysconfig (stuff like -c)   $SUPERVISORD $OPTIONS  # show initial startup status  $SUPERVISORCTL $OPTIONS status  # only create the subsyslock if we created the PIDFILE   [ -e $PIDFILE ] && touch $LOCKFILE } stop() {   echo -n "Stopping supervisord: "   $SUPERVISORCTL $OPTIONS shutdown  if [ -n "$WAIT_FOR_SUBPROCESSES" ]; then    echo "Waiting roughly 60 seconds for $PIDFILE to be removed after child processes exit"    for sleep in 2 2 2 2 4 4 4 4 8 8 8 8 last; do     if [ ! -e $PIDFILE ] ; then      echo "Supervisord exited as expected in under $total_sleep seconds"      break     else      if [[ $sleep -eq "last" ]] ; then       echo "Supervisord still working on shutting down. We've waited roughly 60 seconds, we'll let it do its thing from here"       return 1      else       sleep $sleep       total_sleep=$(( $total_sleep + $sleep ))      fi     fi    done   fi   # always remove the subsys. We might have waited a while, but just remove it at this point.   rm -f $LOCKFILE } restart() {   stop   start } case "$1" in  start)   start   RETVAL=$?   ;;  stop)   stop   RETVAL=$?   ;;  restart|force-reload)   restart   RETVAL=$?   ;;  reload)   $SUPERVISORCTL $OPTIONS reload   RETVAL=$?   ;;  condrestart)   [ -f $LOCKFILE ] && restart   RETVAL=$?   ;;  status)   $SUPERVISORCTL $OPTIONS status   if running ; then    RETVAL=0   else    RETVAL=1   fi   ;;  *)   echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"   exit 1 esac exit $RETVAL

保存完畢以後,能夠執行如下命令修改文件權限:

chmod 777 /etc/init.d/supervisord

/etc/init.d/supervisord  start

 這樣,supervisor就啓動了。

3. 配置開機啓動

執行如下命令:

chkconfig supervisord  on

 能夠如下命令查看是否成功

chkconfig --list | grep  supervisord 

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