[Python] CentOS 安装 supervisor 进程管理工具

我就是我 2022-07-16 04:51 234阅读 0赞

supervisor 是python的进程管理工具，可以用来把自己写的脚本变成进程，每时每刻不断地跑，而中断时又能自动重启，开机运行。

1 - 安装 setuptools (python2)

yum install python-setuptools

2 - 安装 supervisor (只支持python2)

easy\_install或者pip安装，注意supervisor当前只有python2支持的版本。

pip install supervisor

检查是否安装成功

\[root@VMServer meld3-0.6.5\]\# python2.6  
Python 2.6.6 (r266:84292, Jul 23 2015, 15:22:56)  
\[GCC 4.4.7 20120313 (Red Hat 4.4.7-11)\] on linux2  
Type "help", "copyright", "credits" or "license" for more information.  
>>> import supervisor  
>>>

3 - 生成配置文件

echo\_supervisord\_conf > /etc/supervisord.conf

如果上面的命令运行报错

Traceback (most recent call last):  
  File "/usr/bin/echo\_supervisord\_conf", line 5, in <module>  
    from pkg\_resources import load\_entry\_point  
  File "/usr/lib/python2.6/site-packages/pkg\_resources.py", line 2655, in <module>  
    working\_set.require(\_\_requires\_\_)  
  File "/usr/lib/python2.6/site-packages/pkg\_resources.py", line 648, in require  
    needed = self.resolve(parse\_requirements(requirements))  
  File "/usr/lib/python2.6/site-packages/pkg\_resources.py", line 546, in resolve  
    raise DistributionNotFound(req)  
pkg\_resources.DistributionNotFound: meld3>=0.6.5

解决方法：进入/usr/lib/python2.6/site-packages/supervisor-3.3.1-py2.6.egg-info/requires.txt 将meld3 >= 0.6.5 这一行注释掉，再重新执行即可。

4 - 修改配置文件

vi /etc/supervisord.conf, 修改蓝色的部分

; Sample supervisor config file.  
;  
; For more information on the config file, please see:  
; [http://supervisord.org/configuration.html][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".

\[unix\_http\_server\]  
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))

;\[inet\_http\_server\]         ; 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           ; (num of main logfile rotation backups;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)  
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

\[supervisorctl\]  
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 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.

;\[program:theprogramname\]  
;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=0,2                 ; 'expected' exit codes used with autorestart (default 0,2)  
;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 (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=/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 (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.

;\[eventlistener:theeventlistenername\]  
;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=0,2                 ; 'expected' exit codes used with autorestart (default 0,2)  
;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 (default 10)  
;stdout\_events\_enabled=false   ; emit events on stdout writes (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 (default 10)  
;stderr\_events\_enabled=false   ; emit events on stderr writes (default false)  
;environment=A="1",B="2"       ; process environment additions  
;serverurl=AUTO                ; override serverurl computation (childutils)

; The below sample group section 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 = relative/directory/\*.ini

\[group: abc\]  
\#programs=abc-4000  
programs=abc-4000,abc-4001,abc-4002,abc-4003

\[program:abc-7000\]  
command= python /var/www/abc/1.py --port=4000  
directory= /var/www/abc  
user= root  
autorestart=true  
stdout\_log\_file=log\_path  
loglevel=info

\[program:abc-4001\]  
command= python /var/www/abc/1.py --port=4001  
directory= /var/www/abc  
user= root  
autorestart=true  
stdout\_log\_file=log\_path  
loglevel=info

\[program:rms-4002\]  
command= python /var/www/abc/1.py --port=4002  
directory= /var/www/abc  
user= root  
autorestart=true  
stdout\_log\_file=log\_path  
loglevel=info

只写一个进程的时候

\[program:test01\]  
command = /usr/bin/python /root/d\_test.py  
directory = /root  
user = root  
autostart = True  
autorestart = true

5 - 配置启动文件

vi /etc/rc.d/init.d/supervisord，写入配置

\#!/bin/bash  
\#  
\# supervisord   This scripts turns supervisord on  
\#  
\# Author:       Mike McGrath <[mmcgrath@redhat.com][mmcgrath_redhat.com]> (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/supervisord.conf  
\# pidfile: /var/run/supervisord.pid  
\#

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

RETVAL=0

start() \{  
        echo -n $"Starting supervisord: "  
        daemon supervisord  
        RETVAL=$?  
        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

保存退出后修改权限为可执行

chmod 755 /etc/rc.d/init.d/supervisord

6 - 启动supervisor

service supervisord start

7 - 查看supervisor进程

检查supervisor是否运行，supervisor设定的python脚本是否运行

ps -ef | grep .py

\[root@vm-vc02-SR910 init\]\# supervisorctl  
Server requires authentication  
Username:user  
Password:  
rms:rms-9000                     RUNNING   pid 55189, uptime 0:33:36  
supervisor>

8 - 查看supervisor日志

tail /tmp/supervisord.log

[http_supervisord.org_configuration.html]: http://supervisord.org/configuration.html
[mmcgrath_redhat.com]: mailto:mmcgrath@redhat.com