centos7安装supervisor详细教程

解释一些让人容易疑惑名词：

supervisor：要安装的软件的名称。
supervisord：装好supervisor软件后，supervisord用于启动supervisor服务。
supervisorctl：用于管理supervisor配置文件中program。

方法一、使用yum命令安装（推荐）

$ sudo su - #切换为root用户

# yum install epel-release
# yum install -y supervisor
# systemctl enable supervisord # 开机自启动
# systemctl start supervisord # 启动supervisord服务

# systemctl status supervisord # 查看supervisord服务状态
# ps -ef|grep supervisord # 查看是否存在supervisord进程

方法二、使用pip手工安装配置(不推荐)

准备工作

确认9001端口未被占用，如果9001端口被占用，请将后面提到的supervisord.conf文件中的9001替换为可用端口号，如7001。

一、安装supervisor

切换为root用户

$ sudo su -

为python2.7安装pip（supervisor只支持python2.7）
(1) 下载pip

# wget https://bootstrap.pypa.io/get-pip.py --no-check-certificate

(2) 安装pip

# python2.7 get-pip.py
如果遇到psutil相关的报错，参考https://www.cnblogs.com/chentq/p/4954135.html

安装supervisor

# pip2 install supervisor

# #可能遇到的问题及解决办法：
# #如果遇到NameError: name 'sys_platform' is not defined 
# #运行如下命令即可（但是也会报错，不用理会）
# #pip2 install --upgrade distribute,
# #然后再卸载supervisor，
# #pip2 uninstall supervisor，
# #重装supervisor,
# #pip2 install supervisor。
# #参考http://www.yuchaoshui.com/post/CentOS6-Python-installation

创建supervisor所需目录

# mkdir /etc/supervisord.d/

创建supervisor配置文件

# echo_supervisord_conf > /etc/supervisord.conf

编辑supervisord.conf文件

# vim /etc/supervisord.conf

文件内容如下(直接展示完整的文件内容，建议直接复制粘贴，如果想知道详细改动，可逐行对比)

; 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=/var/run/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=/var/log/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=/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 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:///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=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="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=0,2                 ; '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="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 = /etc/supervisord.d/*.ini

保存退出

Esc:x

启动supervisor

# supervisord -c /etc/supervisord.conf

查看supervisor是否启动成功

# ps -ef|grep supervisord
root       932     1  0 May10 ?        00:00:09 /bin/python2.7 /bin/supervisord -c /etc/supervisord.conf
root      7902  6814  0 10:29 pts/0    00:00:00 grep --color=auto supervisord

至此，安装supervisor就结束了

二、将supervisor配置为开机自启动服务

编辑服务文件

# vim /usr/lib/systemd/system/supervisord.service

内容如下

[Unit]
Description=Supervisor daemon

[Service]
Type=forking
PIDFile=/var/run/supervisord.pid
ExecStart=/bin/supervisord -c /etc/supervisord.conf
ExecStop=/bin/supervisorctl shutdown
ExecReload=/bin/supervisorctl reload
KillMode=process
Restart=on-failure
RestartSec=42s

[Install]
WantedBy=multi-user.target

保存退出

Esc:x

启动服务

# systemctl enable supervisord

查看是否启动

# systemctl is-enabled supervisord
enabled

成功之后，就可以使用如下命令管理supervisor服务了

# systemctl stop supervisord
# systemctl start supervisord
# systemctl status supervisord
# systemctl reload supervisord
# systemctl restart supervisord

至此，安装supervisor和配置为supervisor服务的工作就完成了。

补充：

1. 因为我们的supervisor使用的是root安装，所以，对于非root用户，如果在执行

 $ supervisord -c /etc/supervisord.conf 
 $ supervisorctl

命令时，会遇到访问被拒（Permission denied）的问题。
在命令最前面加上sudo即可
2. 如果更改了/etc/supervisord.conf中的端口号，原来的简写命令

# supervisorctl

就需要在后面指定supervsor配置文件位置，或指定supervisor服务运行的端口号

# supervisorctl -c /etc/supervisord.conf 
# supervisorctl -s http://localhost:7001

否则会报连接拒绝

# supervisorctl 
http://localhost:9001 refused connection
supervisor>