supervisord
【简介】
supervisord的官网：http://supervisord.org。看懂英文的可以不用看我的博客，直接看文档就行了，文档写得非常好。点个赞！！
Supervisor是一个客户/服务器系统，它可以在类Unix系统中管理控制大量进程。Supervisor使用python开发，有多年历史，目前很多生产环境下的服务器都在使用Supervisor。
Supervisor的服务器端称为supervisord，主要负责在启动自身时启动管理的子进程，响应客户端的命令，重启崩溃或退出的子进程，记录子 进程stdout和stderr输出，生成和处理子进程生命周期中的事件。可以在一个配置文件中配置相关参数，包括Supervisord自身的状态，其 管理的各个子进程的相关属性。配置文件一般位于/etc/supervisord.conf。
Supervisor的客户端称为supervisorctl，它提供了一个类shell的接口（即命令行）来使用supervisord服务端提供的功 能。通过supervisorctl，用户可以连接到supervisord服务器进程，获得服务器进程控制的子进程的状态，启动和停止子进程，获得正在 运行的进程列表。客户端通过Unix域套接字或者TCP套接字与服务端进行通信，服务器端具有身份凭证认证机制，可以有效提升安全性。当客户端和服务器位 于同一台机器上时，客户端与服务器共用同一个配置文件/etc/supervisord.conf，通过不同标签来区分两者的配置。
Supervisor也提供了一个web页面来查看和管理进程状态，这个功能用得人比较少。
【平台要求】
Supervisor可以运行在大多数Unix系统上，但不支持在Windows系统上运行。
Supervisor需要Python2.4及以上版本，但任何Python 3版本都不支持。
【安装】
当前Supervisor的最高版本是3.0，之前尝试使用2.x版本管理实验集群中的若干mdrill进程，发现使用客户端无法有效启动和停止服务器 端管理的各个子进程，从网上搜索错误发现2.x版本有一些bug，建议升级到3.0版本。因此我卸载了2.x版本，重新安装了3.0版本，发现3.0版本 很好使。3.0版本相对2.x版本，配置文件不同部分的配置项都发生了变化，详见官方文档。
我使用的操作系统是CentOS 6.4， 默认已经安装了Python，且是2.6.6版本。如果Python没有安装，请自行安装符合要求的版本。
1. 安装easy_install
sudo yum install python-setuptools-devel
2. 安装Supervisor
easy_install supervisor
3. 生成配置文件
echo_supervisord_conf > /etc/supervisord.conf
经过上面两步，Supervisor就安装好了。配置 文件模版已经在/etc/supervisord.conf中生成。当然配置文件的位置不一定放在/etc/supervisord.conf中。在不指 定配置文件位置的情况下，supervisord和supervisorctl会按照以下三个顺序来搜索配置文件的位置。
- $CWD/supervisord.conf
- $CWD/etc/supervisord.conf
- /etc/supervisord.conf
接下来就可以根据需要修改配置文件中的相应部分，对需要管理的进程进行配置了。具体的配置可以参考下一部分。
【配置】
我在一个三个结点的集群中部署了mdrill，三台主机名称分别为cma01, cma02, cma03，在cma01和cma02上打算启动Supervisor进程（这里的Supervisor进程是storm的进程，与supervisor 进程管理工具不是一回事），在cma03上打算启动NimbusServer，Mdrillui和Supervisor三个进程。在三台主机上都安装 supervisor进程控制系统后，分别在每台主机的/etc/supervisord.conf文件中配置每台主机要管理的进程。具体配置如下，其中 以；开始的行为注释行：
[cma01 /etc/supervisord.conf]
; Sample supervisor config file.
;
; For more information on the config file, please see:
; http://supervisord.org/configuration.html
;
; Note: shell expansion ("~" or "$HOME") is not supported. Environment
; variables can be expanded using this syntax: "%(ENV_HOME)s". [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=cma01:9001 ; (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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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) [program:spvs-01]
command=/root/alimama/adhoc-core/bin/bluewhale supervisor
process_name=%(program_name)s
numprocs=1
user=root
autostart=true
autorestart=true
startsecs=5
startretries=3
redirect_stderr=true
stdout_logfile=/root/alimama/adhoc-core/bin/supervisor.log
stdout_logfile_maxbytes=20MB
stdout_logfile_backups=10
stopasgroup=true ; 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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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_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 ; # 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
关键部分是program:spvs-01，该部分为主机cma01配置了让supervisord管理的storm进程Supervisor。
[cma02 /etc/supervisord.conf]
; Sample supervisor config file.
;
; For more information on the config file, please see:
; http://supervisord.org/configuration.html
;
; Note: shell expansion ("~" or "$HOME") is not supported. Environment
; variables can be expanded using this syntax: "%(ENV_HOME)s". [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=cma02:9001 ; (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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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) [program:spvs-02]
command=/root/alimama/adhoc-core/bin/bluewhale supervisor
process_name=%(program_name)s
numprocs=1
user=root
autostart=true
autorestart=true
startsecs=5
startretries=3
redirect_stderr=true
stdout_logfile=/root/alimama/adhoc-core/bin/supervisor.log
stdout_logfile_maxbytes=20MB
stdout_logfile_backups=10
stopasgroup=true ; 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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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_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 ; # 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
关键部分是program:spvs-02，该部分为主机cma02配置了让supervisord管理的storm进程Supervisor。
[cma03 /etc/supervisord.conf]
; Sample supervisor config file.
;
; For more information on the config file, please see:
; http://supervisord.org/configuration.html
;
; Note: shell expansion ("~" or "$HOME") is not supported. Environment
; variables can be expanded using this syntax: "%(ENV_HOME)s". [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=cma03:9001 ; (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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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) [program:nmbs]
command=/root/alimama/adhoc-core/bin/bluewhale nimbus
process_name=%(program_name)s
numprocs=1
user=root
priority=700
autostart=true
autorestart=true
startsecs=5
startretries=3
redirect_stderr=true
stdout_logfile=/root/alimama/adhoc-core/bin/nimbus.log
stdout_logfile_maxbytes=20MB
stdout_logfile_backups=10
stopasgroup=true [program:spvs-03]
command=/root/alimama/adhoc-core/bin/bluewhale supervisor
process_name=%(program_name)s
numprocs=1
user=root
priority=800
autostart=true
autorestart=true
startsecs=5
startretries=3
redirect_stderr=true
stdout_logfile=/root/alimama/adhoc-core/bin/supervisor.log
stdout_logfile_maxbytes=20MB
stdout_logfile_backups=10
stopasgroup=true [program:ui]
command=/root/alimama/adhoc-core/bin/bluewhale mdrillui 1107 /root/alimama/adhoc-core/lib/adhoc-web-0.18-beta.jar
process_name=%(program_name)s
numprocs=1
user=root
priority=900
autostart=true
autorestart=true
startsecs=5
startretries=3
redirect_stderr=true
stdout_logfile=/root/alimama/adhoc-core/bin/ui.log
stdout_logfile_maxbytes=20MB
stdout_logfile_backups=10
stopasgroup=true ; 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)
;autorestart=unexpected ; whether/when to restart (default: unexpected)
;startsecs=1 ; number of secs prog must stay running (def. 1)
;startretries=3 ; max # of serial start failures (default 3)
;exitcodes=0,2 ; 'expected' exit codes for process (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_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 ; # 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
关键部分是program:nmbs, program:spvs-03和program:ui，这三部分为主机cma03配置了让supervisord管理的storm进程NimbusServer, Supervisor和Mdrillui。
有几个配置项值得解释一下，可以根据需要自行设置。
1. stopasgroup=true。这一配置项的作用是：如果supervisord管理的进程px又产生了若干子进程，使用supervisorctl 停止px进程，停止信号会传播给px产生的所有子进程，确保子进程也一起停止。这一配置项对希望停止所有进程的需求是非常有用的。
2. autostart=true。这一配置项的作用是：当启动supervisord的时候会将该配置项设置为true的所有进程自动启动。
【启动supervisord】
确保配置无误后可以在每台主机上使用下面的命令启动supervisor的服务器端supervisord
supervisord
【停止supervisord】
supervisorctl shutdown
【重新加载配置文件】
supervisorctl reload
【进程管理】
1. 启动supervisord管理的所有进程
supervisorctl start all
2. 停止supervisord管理的所有进程
supervisorctl stop all
3. 启动supervisord管理的某一个特定进程
supervisorctl start program-name // program-name为[program:xx]中的xx
4. 停止supervisord管理的某一个特定进程
supervisorctl stop program-name // program-name为[program:xx]中的xx
5. 重启所有进程或所有进程
supervisorctl restart all // 重启所有
supervisorctl reatart program-name // 重启某一进程，program-name为[program:xx]中的xx
6. 查看supervisord当前管理的所有进程的状态
supervisorctl status
【遇到问题及解决方案】
在使用命令supervisorctl start all启动控制进程时，遇到如下错误
unix:///tmp/supervisor.sock no such file
出现上述错误的原因是supervisord并未启动，只要在命令行中使用命令sudo supervisord启动supervisord即可。
【遗留问题】
当集群规模扩大后，登录到每台主机使用supervior控制进程也是很麻烦的，能不能用一台主机作为客户端，同时连接集群中的所有主机，以一种中 心化的方式统一管理集群中的所有进程？之前一直使用的方式是使用交互式工具expect。supervisor本身有没有提供一种机制实现集群中所有进程 的中央化管理？
目前测试成功的是使用一台主机作为客户端（supervisorctl），控制另一台服务器(supervisord)主机上的状态。方法是在服务 器端配置[inet_http_server]部分，开启TCP端口监听。客户端配置[supervisorctl]部分，指定服务器端的 serverurl，连接服务器端监听的端口。但是一个客户端只能连接一个服务器，无法指定多个服务器。
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