Supervisor Linux进程控制管理

Supervisor 介绍

Supervisord是用Python实现的一款非常实用的进程管理工具，类似于monit，monit和supervisord的一个比较大的差异是supervisord管理的进程必须由supervisord来启动，monit可以管理已经在运行的程序；supervisord还要求管理的程序是非daemon程序，supervisord会帮你把它转成daemon程序，因此如果用supervisord来管理nginx的话，必须在nginx的配置文件里添加一行设置daemon off让nginx以非daemon方式启动。官方文档：http://supervisord.org/index.html安装supervisor已经被收录在epel的repo中，可以通过yum 直接安装配置supervisor的配置文件为:/etc/supervisord.conf 配置文件必须要有一个program配置项，这样supervisord才知道哪个program需要被管理和监控。

[root@localhost ~]# cat /etc/supervisord.conf

[supervisord]
http_port=/var/tmp/supervisor.sock ; (default is to run a UNIX domain socket server)
;http_port=127.0.0.1:9001  ; (alternately, ip_address:port specifies AF_INET)
;sockchmod=0700              ; AF_UNIX socketmode (AF_INET ignore, default 0700)
;sockchown=nobody.nogroup     ; AF_UNIX socket uid.gid owner (AF_INET ignores)
;umask=022                   ; (process file creation umask;default 022)
logfile=/var/log/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               ; (logging level;default info; others: debug,warn)
pidfile=/var/run/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)

;nocleanup=true              ; (don't clean up tempfiles at start;default false)
;http_username=user          ; (default is no username (open system))
;http_password=123           ; (default is no password (open system))
;childlogdir=/tmp            ; ('AUTO' child log dir, default $TEMP)
;user=chrism                 ; (default is current user, required if root)
;directory=/tmp              ; (default is not to cd during start)
;environment=KEY=value       ; (key value pairs to add to environment)

[supervisorctl]
serverurl=unix:///var/tmp/supervisor.sock ; use a unix:// URL  for a unix socket
;serverurl=http://127.0.0.1:9001 ; use an http:// url to specify an inet socket
;username=chris              ; 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")

; 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.

;[program:theprogramname]
;command=/bin/cat            ; the program (relative uses PATH, can take args)
;priority=999                ; the relative start priority (default 999)
;autostart=true              ; start at supervisord start (default: true)
;autorestart=true            ; retstart at unexpected quit (default: true)
;startsecs=10                ; number of secs prog must stay running (def. 10)
;startretries=3              ; max # of serial start failures (default 3)
;exitcodes=0,2               ; 'expected' exit codes for process (default 0,2)
;stopsignal=QUIT             ; signal used to kill process (default TERM)
;stopwaitsecs=10             ; max num secs to wait before SIGKILL (default 10)
;user=chrism                 ; setuid to this UNIX account to run the program
;log_stdout=true             ; if true, log program stdout (default true)
;log_stderr=true             ; if true, log program stderr (def false)
;logfile=/var/log/cat.log    ; child log path, use NONE for none; default AUTO
;logfile_maxbytes=1MB        ; max # logfile bytes b4 rotation (default 50MB)
;logfile_backups=10          ; # of logfile backups (default 10)

启动/停止
supervisorctl -c /etc/supervisord.conf start/stop XXX（XXX为配置文件中，program处定义的名字）