CentOS安装supervisor

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准备

需要python2.7版本以上才能安装,如果是CentOS6,一般自带得是2.6.6版本,需要先升级python,详情查看:http://www.884358.com/centos6-python27/

查看python版本:

python -V

下载

下载地址:https://pypi.org/project/supervisor/
我下载的是4.1.0版本。

安装

tar -zxvf supervisor-4.1.0.tar.gz
cd supervisor-4.1.0
python setup.py install

如若运行报错:
Traceback (most recent call last):
  File “setup.py”, line 32, in
    from setuptools import setup, find_packages
ImportError: No module named setuptools

则需要安装setuptools模块
setuptools-0.6c11-py2.7.egg
然后运行:

sh setuptools-0.6c11-py2.7.egg

之后再重新执行python setup.py install

建立软连接

mv /usr/bin/echo_supervisord_conf /usr/bin/echo_supervisord_conf_bak
ln -s /usr/local/bin/echo_supervisord_conf /usr/bin/echo_supervisord_conf

mv /usr/bin/supervisord /usr/bin/supervisord_bak
ln -s /usr/local/bin/supervisord /usr/bin/supervisord

测试supervisord是否安装成功

echo_supervisord_conf

建立应用配置文件夹

mkdir -p /etc/supervisor/conf.d/

创建默认的配置文件,并修改配置

echo_supervisord_conf >/etc/supervisor/supervisord.conf

vi /etc/supervisor/supervisord.conf

#在末尾添加
[include]
files = ./conf.d/*.conf

设置启动脚本

/etc/init.d/目录新建supervisord文件

vim /etc/init.d/supervisord

内容如下:

#!/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/supervisor/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

其中,需要注意以下变量的设置:

PREFIX=/usr/local

SUPERVISORD=$PREFIX/bin/supervisord   #supervisord   程序的安装路径
SUPERVISORCTL=$PREFIX/bin/supervisorctl  #supervisorctl 程序的安装路径

PIDFILE=/var/supervisor/supervisord.pid  #需要先创建/var/supervisor目录
LOCKFILE=/var/supervisor/supervisord.lock

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

保存完毕之后,可以执行以下命令修改文件权限:

chmod 755 /etc/init.d/supervisord

配置开机启动

chkconfig supervisord  on

可以以下命令查看是否成功

chkconfig --list | grep  supervisord

启动

方式一:

/etc/init.d/supervisord  start

方式二:

#启动命令
supervisord
-c, --configuration  指定配置文件路径 (默认为/etc/supervisord.conf)
-i, --interactive  执行命令后启动交互式shell
-s, --serverurl URL  upervisord服务器监听的URL(默认为“ http:// localhost:9001 ”)
-u, --username  用于与服务器进行身份验证的用户名
-p, --password  用于与服务器进行身份验证的密码
-r, --history-file  保留readline历史记录(如果readline可用)
supervisord -c /etc/supervisor/supervisord.conf

重启

supervisorctl reload

常用命令

supervisorctl stop programxxx,停止某一个进程(programxxx),programxxx为[program:chatdemon]里配置的值,这个示例就是chatdemon。
supervisorctl start programxxx,启动某个进程
supervisorctl restart programxxx,重启某个进程
supervisorctl stop groupworker: ,重启所有属于名为groupworker这个分组的进程(start,restart同理)
supervisorctl stop all,停止全部进程,注:start、restart、stop都不会载入最新的配置文件。
supervisorctl reload,载入最新的配置文件,停止原有进程并按新的配置启动、管理所有进程。
supervisorctl update,根据最新的配置文件,启动新配置或有改动的进程,配置没有改动的进程不会受影响而重启。
注意:显示用stop停止掉的进程,用reload或者update都不会自动重启。

查看日志

默认是在/var/log/supervisord.log
也可能是在/tmp/supervisord.log

其他

unix:///tmp/supervisor.sock no such file

使用supervisorctl start命令时报以上错误。解决办法如下:

  • 打开配置文件
/etc/supervisor/supervisord.conf
  • 把所有的/tmp路径都替换掉:
    /tmp/supervisor.sock 改成 /var/run/supervisor.sock
    /tmp/supervisord.log 改成 /var/log/supervisor.log
    /tmp/supervisord.pid 改成 /var/run/supervisor.pid
  • 修改权限

chmod 777 /run
chmod 777 /var/log
  • 创建 supervisor.sock
touch /var/run/supervisor.sock
chmod 777 /var/run/supervisor.sock
  • 杀掉supervisor进程。

查看进程号

ps -elf | grep "supervisor"

杀死进程

kill -9 19737
  • 启动supervisord
supervisord -c /etc/supervisor/supervisord.conf

参考:
https://www.cnblogs.com/sfnz/p/5578417.html
https://blog.csdn.net/shooke/article/details/85604273
https://blog.csdn.net/youzi_yun/article/details/84934110
https://www.cnblogs.com/apexchu/p/4207333.html

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