Supervisor(Linux/Unix进程管理工具)安装与配置

  参考链接:https://blog.csdn.net/xyang81/article/details/51555473

  Supervisor(http://supervisord.org/)是用Python开发的一个client/server服务,是Linux/Unix系统下的一个进程管理工具,不支持Windows系统。它可以很方便的监听、启动、停止、重启一个或多个进程。用Supervisor管理的进程,当一个进程意外被杀死,supervisort监听到进程死后,会自动将它重新拉起,很方便的做到进程自动恢复的功能,不再需要自己写shell脚本来控制。

  因为Supervisor是Python开发的,安装前先检查一下系统否安装了Python2.4以上版本。下面以CentOS7.4,Python2.7版本环境下,介绍Supervisor的安装与配置步聚

  1,环境检查

  2,安装supervisor

yum install python-setuptools
easy_install pip
pip install superviso

  

  3,配置

  创建配置文件夹

mkdir /etc/supervisor

  运行echo_supervisord_conf程序生成supervisor的初始化配置文件

echo_supervisord_conf > /etc/supervisor/supervisord.conf

  修改该配置文件

[unix_http_server]
file=/tmp/supervisor.sock   ; the path to the socket file
[inet_http_server]         ; 开启web管理界面
port=*:9001        ; 默认端口9001 *不限制登录的客户端
username=user              ; 用户名
password=123               ; 密码
[supervisord]
logfile=/var/log/supervisord.log ;日志
logfile_maxbytes=50MB        ; 最大日志大小50M
logfile_backups=10           ; # of main logfile backups; 0 means none, default 10
loglevel=info                ; 日志等级
pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid
nodaemon=false               ; start in foreground if true; default false
minfds=1024                  ; min. avail startup file descriptors; default 1024
minprocs=200                 ; min. avail process descriptors;default 200
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
[supervisorctl]
serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL  for a unix socket
[include]
files = /etc/supervisor/config.d/*.ini #进程管理配置文件单独放置在一个目录以ini结尾

  4,启动

supervisord -c /etc/supervisor/supervisord.conf

  web页面登录(配置用户名user密码123)

  5,配置管理进程

  /etc/supervisor/config.d/tomcat.ini

program:tomcat]
environment = JAVA_HOME="/opt/jdk1.7.0_45"
command=/opt/apache-tomcat-7.0.56/bin/catalina.sh run
stdout_logfile=/opt/apache-tomcat-7.0.56/logs/catalina.out
autostart=true
autorestart=true
startsecs=5
priority=1
stopasgroup=true
killasgroup=true

  PS:environment设置java环境家目录,如果是yum安装的jdk不需要设置,如果不设置不能通过supervisor启动tomcat会报spawn error错误

  重启

supervisorctl reload

  supervisord启动成功后,可以通过supervisorctl客户端控制进程,启动、停止、重启。运行supervisorctl命令,不加参数,会进入supervisor客户端的交互终端,并会列出当前所管理的所有进程。

  输入help可以查看可以执行的命令列表,如果想看某个命令的作用,运行help 命令名称,如:help stop

   通过web界面管理

  6,开机启动supervisor

   进入/lib/systemd/system目录,并创建supervisor.service文件

[Unit]
Description=supervisor
After=network.target

[Service]
Type=forking
ExecStart=/usr/bin/supervisord -c /etc/supervisor/supervisord.conf
ExecStop=/usr/bin/supervisorctl $OPTIONS shutdown
ExecReload=/usr/bin/supervisorctl $OPTIONS reload
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target

  设置开机启动

systemctl enable supervisor.service
systemctl daemon-reload

  修改权限为766

chmod 766 supervisor.service

  设置service服务类型

  编辑服务 /etc/rc.d/init.d/supervisor

#!/bin/bash
#
# supervisord   This scripts turns supervisord on
#
# Author:       Mike McGrath <[email protected]> (based off yumupdatesd)
#
# chkconfig:    - 95 04
#
# description:  supervisor is a process control utility.  It has a web based
#               xmlrpc interface as well as a few other nifty features.
# processname:  supervisord
# config: /etc/supervisor/supervisord.conf
# pidfile: /var/run/supervisord.pid
#

# source function library
. /etc/rc.d/init.d/functions

RETVAL=0

start() {
    echo -n $"Starting supervisord: "
    daemon "supervisord -c /etc/supervisor/supervisord.conf "
    RETVAL=$?
    echo
    [ $RETVAL -eq 0 ] && touch /var/lock/subsys/supervisord
}

stop() {
    echo -n $"Stopping supervisord: "
    killproc supervisord
    echo
    [ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/supervisord
}

restart() {
    stop
    start
}

case "$1" in
  start)
    start
    ;;
  stop) 
    stop
    ;;
  restart|force-reload|reload)
    restart
    ;;
  condrestart)
    [ -f /var/lock/subsys/supervisord ] && restart
    ;;
  status)
    status supervisord
    RETVAL=$?
    ;;
  *)
    echo $"Usage: $0 {start|stop|status|restart|reload|force-reload|condrestart}"
    exit 1
esac

exit $RETVAL

  设置自启动

chmod 755 /etc/rc.d/init.d/supervisor
chkconfig supervisor on

  ps:注意:修改脚本中supervisor配置文件路径为你的supervisor的配置文件路径

  PS:Supervisor只能管理非daemon的进程,也就是说Supervisor不能管理守护进程。否则提示Exited too quickly (process log may have details)异常。例子中的Tomcat默认是以守护进程启动的,所以我们改成了catalina.sh run,以前台进程的方式运行。

  PS:日志文件/var/log/supervisord.log记录程序启动过程

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转载自www.cnblogs.com/minseo/p/9115290.html