Supervisor启动并管理Celery相关进程

关于celery在运行过程中，默认情况下是无法在关机以后自动重启的。所以我们一般开发中会使用supervisor进程监控来对celery程序进行运行监控！当celery没有启动的情况下，supervisor会自动启动celery，所以我们需要安装supervisor并且编写一个supervisor的控制脚本，在脚本中编写对celery进行启动的命令即可。

1. 安装和启动celery任务监控器

针对celery中的任务执行过程，我们也可以安装一个flower的工具来进行监控。

pip install flower

cd /home/moluo/Desktop/luffycity/luffycityapi

# 保证celery在启动中

celery -A luffycityapi worker -l INFO

# 再启动celery-flower

celery -A luffycityapi flower --port=5555

http://localhost:5555

attention: 这里启动了测试之后就可以关掉了, 因为后面会使用supervisor启动flower, 防止占用端口

2. supervisor启动celery&flower

Supervisor是用Python开发的一套通用的进程管理程序，能将一个普通的命令行进程变为系统守护进程daemon，并监控进程状态,异常退出时能自动重启。

pip install supervisor

# 注意：如果supervisor是安装在虚拟环境的，则每次使用supervisor务必在虚拟环境中进行后面所有的操作

# conda activate luffycity

supervisor配置文档：http://supervisord.org/configuration.html

对Supervisor初始化配置

# 在项目根目录下创建存储supervisor配置目录，在luffycityapi创建scripts目录，已经创建则忽略

conda activate luffycity

cd /home/ifeng/Desktop/luffycity/luffycityapi

mkdir -p scripts && cd scripts

# 生成初始化supervisor核心配置文件，echo_supervisord_conf是supervisor安装成功以后，自动附带的。

echo_supervisord_conf > supervisord.conf

# 可以通过 ls 查看scripts下是否多了supervisord.conf这个文件，表示初始化配置生成了。

# 在编辑器中打开supervisord.conf，并去掉最后一行的注释分号。

# 修改如下，表示让supervisor自动加载当前supervisord.conf所在目录下所有ini配置文件

supervisord/conf.py，主要修改文件中的39, 40,75,76,169,170行去掉左边注释，其中170修改成当前目录。配置代码：

; 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".

;  - Quotes around values are not supported, except in the case of

;    the environment= options as shown below.

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

;  - Command will be truncated if it looks like a config file comment, e.g.

;    "command=bash -c 'foo ; bar'" will truncate to "command=bash -c 'foo ".

;

; Warning:

;  Paths throughout this example file use /tmp because it is available on most

;  systems.  You will likely need to change these to locations more appropriate

;  for your system.  Some systems periodically delete older files in /tmp.

;  Notably, if the socket file defined in the [unix_http_server] section below

;  is deleted, supervisorctl will be unable to connect to supervisord.

[unix_http_server]

file=/tmp/supervisor.sock   ; the path to the socket file

;chmod=0700                 ; socket file mode (default 0700)

;chown=nobody:nogroup       ; socket file uid:gid owner

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

;password=123               ; default is no password (open server)

; Security Warning:

;  The inet HTTP server is not enabled by default.  The inet HTTP server is

;  enabled by uncommenting the [inet_http_server] section below.  The inet

;  HTTP server is intended for use within a trusted environment only.  It

;  should only be bound to localhost or only accessible from within an

;  isolated, trusted network.  The inet HTTP server does not support any

;  form of encryption.  The inet HTTP server does not use authentication

;  by default (see the username= and password= options to add authentication).

;  Never expose the inet HTTP server to the public internet.

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

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

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

;password=123               ; default is no password (open server)

[supervisord]

logfile=/tmp/supervisord.log ; main log file; default $CWD/supervisord.log

logfile_maxbytes=50MB        ; max main logfile bytes b4 rotation; default 50MB

logfile_backups=10           ; # of main logfile backups; 0 means none, default 10

loglevel=info                ; log level; default info; others: debug,warn,trace

pidfile=/tmp/supervisord.pid ; supervisord pidfile; default supervisord.pid

nodaemon=false               ; start in foreground if true; default false

silent=false                 ; no logs to stdout 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=supervisord            ; setuid to this UNIX account at startup; recommended 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 rpcinterface:supervisor 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:x] sections.

[rpcinterface:supervisor]

supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface

; The supervisorctl section configures how supervisorctl will connect to

; supervisord.  configure it match the settings in either the unix_http_server

; or inet_http_server section.

[supervisorctl]

; serverurl=unix:///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 in [*_http_server] if set

;password=123                ; should be same as in [*_http_server] if set

;prompt=mysupervisor         ; cmd line prompt (default "supervisor")

;history_file=~/.sc_history  ; use readline history if available

; The sample program section below 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)

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

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

;directory=/tmp                ; directory to cwd to before exec (def no cwd)

;umask=022                     ; umask for process (default None)

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

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

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

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

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

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

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

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

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

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

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

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

;stdout_logfile=/a/path        ; 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 (0 means none, default 10)

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

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

;stdout_syslog=false           ; send stdout to syslog with process name (default false)

;stderr_logfile=/a/path        ; 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 (0 means none, default 10)

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

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

;stderr_syslog=false           ; send stderr to syslog with process name (default false)

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

;serverurl=AUTO                ; override serverurl computation (childutils)

; The sample eventlistener section below shows all possible eventlistener

; subsection values.  Create one or more 'real' eventlistener: sections to be

; able to handle event notifications sent by supervisord.

;[eventlistener:theeventlistenername]

;command=/bin/eventlistener    ; 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)

;events=EVENT                  ; event notif. types to subscribe to (req'd)

;buffer_size=10                ; event buffer queue size (default 10)

;directory=/tmp                ; directory to cwd to before exec (def no cwd)

;umask=022                     ; umask for process (default None)

;priority=-1                   ; the relative start priority (default -1)

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

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

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

;autorestart=unexpected        ; autorestart if exited after running (def: unexpected)

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

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

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

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

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

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

;redirect_stderr=false         ; redirect_stderr=true is not allowed for eventlisteners

;stdout_logfile=/a/path        ; 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 (0 means none, default 10)

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

;stdout_syslog=false           ; send stdout to syslog with process name (default false)

;stderr_logfile=/a/path        ; 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 (0 means none, default 10)

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

;stderr_syslog=false           ; send stderr to syslog with process name (default false)

;environment=A="1",B="2"       ; process environment additions

;serverurl=AUTO                ; override serverurl computation (childutils)

; The sample group section below shows all possible group values.  Create one

; or more 'real' group: sections to create "heterogeneous" process groups.

;[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 = *.ini

创建luffycity_celery_worker.ini文件，启动我们项目worker主进程

cd /home/ifeng/Desktop/luffycity/luffycityapi/scripts

touch luffycity_celery_worker.ini

[program:luffycity_celery_worker]

# 启动命令 conda env list

command=/home/ifeng/anaconda3/envs/luffycity/bin/celery -A luffycityapi worker -l info -n worker1

# 项目根目录的绝对路径[manage.py所在目录路径]，通过pwd查看

directory=/home/ifeng/Desktop/luffycity/luffycityapi

# 项目虚拟环境

enviroment=PATH="/home/ifeng/anaconda3/envs/luffycity/bin"

# 运行日志绝对路径

stdout_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.worker.info.log

# 错误日志绝对路径

stderr_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.worker.error.log

# 自动启动，开机自启

autostart=true

# 启动当前命令的用户名

user=ifeng

# 重启

autorestart=true

# 进程启动后跑了几秒钟，才被认定为成功启动，默认1

startsecs=10

# 进程结束后60秒才被认定结束

stopwatisecs=60

# 优先级，值小的优先启动

priority=990

创建luffycity_celery_beat.ini文件，来触发我们的beat定时计划任务

cd /home/ifeng/Desktop/luffycity/luffycityapi/scripts

touch luffycity_celery_beat.ini

[program:luffycity_celery_beat]

# 启动命令 conda env list

command=/home/ifeng/anaconda3/envs/luffycity/bin/celery -A luffycityapi  beat -l info

# 项目根目录的绝对路径，通过pwd查看

directory=/home/ifeng/Desktop/luffycity/luffycityapi

# 项目虚拟环境

enviroment=PATH="/home/ifeng/anaconda3/envs/luffycity/bin"

# 运行日志绝对路径

stdout_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.beat.info.log

# 错误日志绝对路径

stderr_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.beat.error.log

# 自动启动，开机自启

autostart=true

# 重启

autorestart=true

# 进程启动后跑了几秒钟，才被认定为成功启动，默认1

startsecs=10

# 进程结束后60秒才被认定结束

stopwatisecs=60

# 优先级，值小的优先启动

priority=998

创建luffycity_celery_flower.ini文件，来启动我们的celery监控管理工具

cd /home/ifeng/Desktop/luffycity/luffycityapi/scripts

touch luffycity_celery_flower.ini

[program:luffycity_celery_flower]

# 启动命令 conda env list

command=/home/ifeng/anaconda3/envs/luffycity/bin/celery -A luffycityapi flower --port=5555

# 项目根目录的绝对路径，通过pwd查看

directory=/home/ifeng/Desktop/luffycity/luffycityapi

# 项目虚拟环境

enviroment=PATH="/home/ifeng/anaconda3/envs/luffycity/bin"

# 输出日志绝对路径

stdout_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.flower.info.log

# 错误日志绝对路径

stderr_logfile=/home/ifeng/Desktop/luffycity/luffycityapi/logs/celery.flower.error.log

# 自动启动，开机自启

autostart=true

# 重启

autorestart=true

# 进程启动后跑了几秒钟，才被认定为成功启动，默认1

startsecs=10

# 进程结束后60秒才被认定结束

stopwatisecs=60

# 优先级

priority=999

启动supervisor，确保此时你在项目路径下

cd ~/Desktop/luffycity/luffycityapi

supervisord -c scripts/supervisord.conf

通过浏览器访问http://127.0.0.1:9001

常用操作

命令	描述
`supervisorctl stop program`	停止某一个进程，program 就是进程名称，例如在ini文件首行定义的`[program:进程名称]`
`supervisorctl stop all`	停止全部进程
supervisorctl start program	启动某个进程，program同上，也支持启动所有的进程
supervisorctl restart program	重启某个进程，program同上，也支持重启所有的进程
`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、管理所有进程注意：start、restart、stop 等都不会载入最新的配置文件
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
ps aux \| grep supervisord	查看supervisor是否启动

把supervisor注册到ubuntu系统服务中并设置开机自启

cd /home/ifeng/Desktop/luffycity/luffycityapi/scripts

touch supervisor.service

supervisor.service，配置内容，并保存。需要通过conda env list 查看当前的虚拟环境路径

[Unit]

Description=supervisor

After=network.target

[Service]

Type=forking

ExecStart=/home/ifeng/anaconda3/envs/luffycity/bin/supervisord -n -c /home/ifeng/Desktop/luffycity/luffycityapi/scripts/supervisord.conf

ExecStop=/home/ifeng/anaconda3/envs/luffycity/bin/supervisorctl $OPTIONS shutdown

ExecReload=/home/ifeng/anaconda3/envs/luffycity/bin/supervisorctl $OPTIONS reload

KillMode=process

Restart=on-failure

RestartSec=42s

[Install]

WantedBy=multi-user.target

设置开机自启

# 创建日志文件

sudo chmod 766 /tmp/supervisord.log

cd /home/ifeng/Desktop/luffycity/luffycityapi/scripts

# 赋予权限

chmod 766 supervisor.service

# 复制到系统开启服务目录下

sudo cp supervisor.service /lib/systemd/system/

# 设置允许开机自启

systemctl enable supervisor.service

# 判断是否已经设置为开机自启了

systemctl is-enabled  supervisor.service

# 通过systemctl查看supervisor运行状态

systemctl status supervisor.service

# 如果查看服务状态时无法启动，则可以通过重启linux系统来测试是否因为前面的终端已经运行了supervisor导致的。当然，也可以手动关闭supervisor以及相关的服务。

# supervisorctl stop all

# ps aux | grep supervisord

# kill -9 51564  # 注意: 9068是举例的，具体看上一行的查询结果

效果图: