使用Supervisor管理Celery进程。

讲过一篇celery的，但是celery启动后并不是daemon的，在生产环境中这肯定是不可以的，那怎么办呢？这就需要使用supervisor进行进程管理了，下面详细介绍。

一、 supervisor是干什么的。

supervisor是有Python语言编写的，基于linux操作系统的一款服务器管理工具，用以监控服务器进程的运行。

supervisor要求管理的程序是非daemon程序，supervisord会帮你把他转换成daemon程序。

因此如果使用supervisor来管理nginx进程的话，必须在nginx的配置文件里添加一行设置deamon off让nginx以非daemon方式启动,

我们这里是用supervisor是用它来管理celery进程。

二、supervisor安装

1. 安装好python环境,这个Linux系统都默认已经安装好了，但是建议安装2.7.0以上版本。

2. 使用pip或者easy_install安装

   sudo pip install supervisor 或者

   sudo easy_install supervisor

   安装完以后，进入python交互式环境，输入：

   import supervisor

   如果没有错误提示则表示安装成功。

三、 supervisor配置

1. superisor配置生成

   $ echo_supervidord_conf > /etc/supervisord.conf

2. 配置文件说明

   $ sudo cp /etc/supervisord.conf /etc/suprtvidord.conf.bak # 首先备份一下配置文件

   废话不多说，直接贴配置文件(配置文件中以；开头的行表示注释)：

   ; Sample supervisor config file.

   ;

   ; For more information on the config file, please see:

   ; http://supervisord.org/configuration.html

   ;

   ; Notes:

   ;  - Shell expansion ("~" or "$HOME") is not supported.  Environment

   ;    variables can be expanded using this syntax: "%(ENV_HOME)s".

   ;  - Comments must have a leading space: "a=b ;comment" not "a=b;comment".

   # [unix_http_server] 这个模块主要是配置sock文件的路径及权限

   [unix_http_server]

   file=/var/run/supervisor.sock    ; (the path to the socket file)

   chmod=0700                       ; socket file mode (default 0700)

   chown=root:root                  ; socket file uid:gid owner

   ;username=admin                  ; (default is no username (open server))

   ;password=admin                  ; (default is no password (open server))

   # [inet_http_server] 这个模块只要是配置Web管理界面

   [inet_http_server]               ; inet (TCP) server disabled by default

   port=127.0.0.1:9001              ; (ip_address:port specifier, *:port for all iface)

   username=admin                   ; (default is no username (open server))

   password=admin                   ; (default is no password (open server))

   # [supervisord] 这个模块是supervisord服务的配置模块，比如日志文件位置，日志等级等等

   [supervisord]

   logfile=/home/liuyadong/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                                            ; (log level;default info; others: debug,warn,trace)

   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)

   ;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] 这个模块的值必须和"unix_http_server"里面设定的匹配

   [supervisorctl]

   serverurl=unix:///var/run/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=admin                                          ; should be same as http_username if set

   ;password=admin                                          ; 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.

   # [program:xxx] 这个模块就是需要管理的进程模块, 字段属性也很简单，后面有注释就不详细介绍了。

   # 这个模块可以是多个

   [program:celery]

   command=celery worker -A monitorAuto.celery --loglevel=info          ; the program (relative uses PATH, can take args)

   ;process_name=%(program_name)s                                       ; process_name expr (default %(program_name)s)

   numprocs=1                                                           ; number of processes copies to start (def 1)

   directory=/home/liuyadong/git/monitor_auto/                          ; directory to cwd to before exec (def no cwd)

   autostart=true                                                       ; start at supervisord start (default: true)

   startsecs=10                                                         ; # of secs prog must stay up to be running (def. 1)

   startretries=3                                                       ; max # of serial start failures when starting (default 3)

   ;autorestart=ture                                                    ; when to restart if exited after running (def: unexpected)

   ;exitcodes=0,2                                                       ; 'expected' exit codes used with autorestart (default 0,2)

   ;stopsignal=QUIT                                                     ; signal used to kill process (default TERM)

   stopwaitsecs=600                                                     ; max num secs to wait b4 SIGKILL (default 10)

   ;stopasgroup=false                                                   ; send stop signal to the UNIX process group (default false)

   killasgroup=true                                                     ; SIGKILL the UNIX process group (def false)

   user=liuyadong                                                       ; setuid to this UNIX account to run the program

   redirect_stderr=true                                                 ; redirect proc stderr to stdout (default false)

   stdout_logfile=/home/liuyadong/log/supervisor/supercelery.log        ; stdout log path, NONE for none; default AUTO

   ;stdout_logfile_maxbytes=1MB                                         ; max # logfile bytes b4 rotation (default 50MB)

   ;stdout_logfile_backups=10                                           ; # of stdout logfile backups (default 10)

   ;stdout_capture_maxbytes=1MB                                         ; number of bytes in 'capturemode' (default 0)

   ;stdout_events_enabled=false                                         ; emit events on stdout writes (default false)

   stderr_logfile=/home/liuyadong/log/supervisor/supercelery.error.log  ; stderr log path, NONE for none; default AUTO

   ;stderr_logfile_maxbytes=1MB                                         ; max # logfile bytes b4 rotation (default 50MB)

   ;stderr_logfile_backups=10                                           ; # of stderr logfile backups (default 10)

   ;stderr_capture_maxbytes=1MB                                         ; number of bytes in 'capturemode' (default 0)

   ;stderr_events_enabled=false                                         ; emit events on stderr writes (default false)

   ;environment=A="1",B="2"                                             ; process environment additions (def no adds)

   ;serverurl=AUTO                                                      ; override serverurl computation (childutils)

   ; The below sample eventlistener section shows all possible

   ; eventlistener subsection values, create one or more 'real'

   ; eventlistener: sections to be able to handle event notifications

   ; sent by supervisor.

   ;[group:thegroupname]

   ;programs=progname1,progname2  ; each refers to 'x' in [program:x] definitions

   ;priority=999                  ; the relative start priority (default 999)

   ; The [include] section can just contain the "files" setting.  This

   ; setting can list multiple files (separated by whitespace or

           ; newlines).  It can also contain wildcards.  The filenames are

   ; interpreted as relative to this file.  Included files *cannot*

   ; include files themselves.

   ;[include]

   ;files = relative/directory/*.ini

四、 Supervisord管理 Supervidord安装完成以后有两个可用的命令行supervisor和supervisorctl

 ? supervisord，                     初始启动Supervisord，启动、管理配置中设置的进程。

 ? 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。

 可以使用--help查看命令更多的用法，我启动时遇到配置文件没有放到默认路径使用-c 参数执行

巴特西

使用Supervisor管理Celery进程。

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