最近听了一场分享，里边同事介绍了一些python开发环境常用到的几种工具，其中之一就supervisord，分享后自己做了些功课，概括一下supervisord是一个什么东西呢
1. 它是一个独立的常驻内存的可以后台运行的监控，管理其他进程的东西
2. 它可以管理任何进程，掌管他们的生死，记录他们个生死变换的时间，记录他们运行吐出的各种数据，主要就是stdout，stderr的输出
3. 提供了一个很好的web页面管理这些进程的运行，查看他们的日志
废话不说了，记录下安装，使用的过程，以备后用
1. 安装
pip-2.7 install supervisor
2. 写一个程序，自己绕着跑的程序 run.sh
#!/usr/bin/bash# coding: UTF-8while true do sleep 1 echo "hi, fucker" done
3. 找一个目录，创建supervisor的配置文件 config.conf
[inet_http_server]port = 0.0.0.0:11316username = hefeipassword = 123456[program:echo_fucker]command = bash /home/hefei/codes/mywork/supervisor/run.shautostart = truestdout_logfile = /home/hefei/codes/mywork/supervisor/run.log[supervisord]logfile=/home/hefei/codes/mywork/supervisor/supervisord.log ; (main log file;default $CWD/supervisord.log)logfile_maxbytes=50MB ; (max main logfile bytes b4 rotation;default 50MB)logfile_backups=10 ; (num of main logfile rotation backups;default 10)loglevel=info ; (log level;default info; others: debug,warn,trace)pidfile=/home/hefei/codes/mywork/supervisor/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);umask=022 ; (process file creation umask;default 022);user=chrism ; (default is current user, required if root);identifier=supervisor ; (supervisord identifier, default is 'supervisor');directory=/tmp ; (default is not to cd during start);nocleanup=true ; (don't clean up tempfiles at start;default false);childlogdir=/tmp ; ('AUTO' child log dir, default $TEMP);environment=KEY=value ; (key value pairs to add to environment);strip_ansi=false ; (strip ansi escape codes in logs; def. false); the below section must remain in the config file for RPC; (supervisorctl/web interface) to work, additional interfaces may be; added by defining them in separate rpcinterface: sections[rpcinterface:supervisor]supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface[supervisorctl][supervisorctl];serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socketserverurl=http://60.28.209.27:11316 ; use an http:// url to specify an inet socket;username=ktep ; should be same as http_username if set;password=123 ; should be same as http_password if set;prompt=mysupervisor ; cmd line prompt (default "supervisor");history_file=~/.sc_history ; use readline history if available; The below sample program section shows all possible program subsection values,; create one or more 'real' program: sections to be able to control them under; supervisor.
4. 启动supervisord服务，这是个常驻内存的服务，他死了，supervisor就真的死了
supervisord -c config.conf
这时候查看run.sh是不是真的起来了呢？
ps -ef | grep run.sh | grep -v grep
hefei 14252 9858 0 15:20 ? 00:00:00 bash /home/hefei/codes/mywork/supervisor/run.sh
5. 使用supervisorctl ，在命令行下管理进程
supervisorctl -c config.conf start echo_fucker
supervisorctl -c config.conf stop echo_fucker
supervisorctl -c config.conf restart echo_fucker
supervisorctl -c config.conf status echo_fucker
[~/codes/mywork/supervisor]$ supervisorctl -c config.conf help
default commands (type help <topic>):=====================================add clear fg open quit remove restart start stop updateavail exit maintail pid reload reread shutdown status tail version就不一一解释啦
6. 使用web界面管理进程
http://xx.xx.xx.xx:11316/
几点注意的：
1. 有些程序是多进程的【master进程fork出m个子进程工作】，不大适合用supervisor管理，因为kill掉master进程后，子进程就会认init做父，再用supervisor启动就会有问题【其实我没试过】
2. supervisor如果挂了，它所管理的服务也不会死，会认init做父，如果这时候再启动supervisor，会发现被管理的服务起重了。 但是，如果被管理的服务需要监听端口。。那supervisor启动的时候，会出问题哦。【端口已经很占用，其实我没试过】