supervisor管理uwsgi

1. 前言

传统的管理uwsgi服务：
1. 通过shell脚本来编写start  restart  stop函数来控制
2. 比较麻烦，有时候控制写的烂，还会出现意想不到的错误
supervisor进行管理
1. 可以批量管理多个uwsgi服务；
2. shell脚本，nginx访问，mysql等都能进行管理
3. 每个服务进行隔离，通过supervisorctl进行管理单个服务
4. supervisorctl对每个管理的服务进行restart  start  stop操作
5. 简化了写shell的烦恼

2. uwsgi配置

[root@linux-node01 ~]# cat  /data/web/plantool/plt_uwsgi.ini
[uwsgi]
socket=127.0.0.1:8011   # socket是ip:port模式
chdir=/data/web/plantool  # django项目目录
module=plantool.wsgi:application  # wsgi路径
vacuum=True
master=True
workers=4                      # 开启的主进程个数
enable-threads=True
threads=10                     # 开启的线程个数
pidfile=/var/run/uwsgi8011.pid   # uwsgi pid文件
#daemonize=/var/log/uwsgi8011.log   #  守护进程一定要注释掉(关键)
memory-report=True
[root@linux-node01 ~]# 

3. supervisord 配置

a. 安装supervisor服务

yum install supervisor

[root@linux-node01 conf.d]# cat /etc/supervisord.conf
; 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 ".

[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           ; # 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
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 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=0,2                 ; '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 (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)
;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)
;environment=A="",B=""       ; 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=0,2                 ; '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 (0 means none, 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 (0 means none, default 10)
;stderr_events_enabled=false   ; emit events on stderr writes (default false)
;environment=A="",B=""       ; 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 = /etc/supervisor/conf.d/*.ini
[root@linux-node01 conf.d]#

/etc/supervisord.conf

# 主要是开启子配置文件路径

[include]
files = /etc/supervisor/conf.d/*.ini

4. 子配置文件

[root@linux-node01 ~]# cd /etc/supervisor/conf.d/
[root@linux-node01 conf.d]# ll
total 8
-rw-r--r-- 1 root root 1474 Jul 25 20:09 getdata.ini
-rw-r--r-- 1 root root 1847 Jul 21 20:58 getdata.ini.back
[root@linux-node01 conf.d]# cat getdata.ini
[program:plantool]
command =/usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini ; 启动命令，可以看出与手动在命令行启动的命令是一样的
autostart = true     ; 在 supervisord 启动的时候也自动启动
stopsignal=QUIT
user=root
startsecs = 5     ; 启动 5 秒后没有异常退出，就当作已经正常启动了
startretries = 3   ; 启动失败自动重试次数，默认是 3
autorestart = true   ; 程序异常退出后自动重启
redirect_stderr = true  ; 把 stderr 重定向到 stdout，默认 false
stdout_logfile_maxbytes = 20MB  ; stdout 日志文件大小，默认 50MB
stdout_logfile = /data/log/plantool_stdout.log
stderr_logfile = /data/log/plantool_err.log

5. 检查运行状态

[root@linux-node01 conf.d]# supervisorctl reload
Restarted supervisord
[root@linux-node01 conf.d]# supervisorctl status
plantool                         RUNNING   pid 31682, uptime 0:07:53
[root@linux-node01 conf.d]# netstat -lnpt |grep 8011
tcp        0      0 127.0.0.1:8011              0.0.0.0:*                   LISTEN      31682/uwsgi
[root@linux-node01 conf.d]# ps -aux |grep plant
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQ
root       345  0.0  0.0 103264   880 pts/0    S+   20:31   0:00 grep plant
root     31682  0.0  0.3 263572 28272 ?        S    20:23   0:00 /usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini
root     31685  0.0  0.3 945848 25780 ?        Sl   20:23   0:00 /usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini
root     31686  0.0  0.3 945848 25776 ?        Sl   20:23   0:00 /usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini
root     31687  0.0  0.3 945848 25772 ?        Sl   20:23   0:00 /usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini
root     31688  0.0  0.3 945848 25768 ?        Sl   20:23   0:00 /usr/local/bin/uwsgi /data/web/plantool/plt_uwsgi.ini
[root@linux-node01 conf.d]#

6. 仅用于个人笔记，方便回忆！

7. 附上nginx配置

server {
    listen       80;
    server_name xxx.com www.xxxx.com;

        location / {
                include /etc/openresty/uwsgi_params;
                uwsgi_pass 127.0.0.1:8011;

                index index.html index.htm;
        }
       location /static {
        alias /data/web/projectname/static/;
     }

    access_log  /data/log/access_projectname.log log4stat;
    error_log /data/log/error_projectname.log error;

}