Supervisord是用Python实现的一款非常实用的进程管理工具,类似于monit。
Monit和Supervisord的一个比较大的差异是Supervisord管理的进程必须由Supervisord来启动,Monit可以管理已经在运行的程序。
Supervisord还要求管理的程序是非Daemon程序,Supervisord会帮你把它转成Daemon程序,因此如果用Supervisord来管理Nginx的话,必须在Nginx的配置文件里添加一行设置Daemon off让Nginx以非Daemon方式启动。
一、Supervisord安装
Supervisord可以通过easy_install supervisor在线安装,也可以通过Supervisord官网下载后setup.py install离线安装。
用easy_install在线安装supervisor:
# yum install python-setuptools
# easy_install supervisor
安装好以后,有两个可执行文件和一个脚本文件
/usr/bin/supervisord -- supervisor服务守护进程
/usr/bin/supervisorctl -- supervisor服务控制程序,比如:status/start/stop/restart xx 等
/usr/bin/echo_supervisord_conf -- supervisor产生配置文件样例
# echo_supervisord_conf > /etc/supervisord.conf -- 生成配置文件
离线源码安装:
1.安装easy_install
wget http://pypi.python.org/packages/source/s/setuptools/setuptools-0.6c11.tar.gz#md5=7df2a529a074f613b509fb44feefe74e
tar zxvf setuptools-0.6c11.tar.gz
cd setuptools-0.6c11
python setup.py install
2.安装meld3
wget http://www.plope.com/software/meld3/meld3-0.6.5.tar.gz
tar zxvf meld3-0.6.5.tar.gz
cd meld3-0.6.5
python setup.py install
cd ..
3.安装elementtree
wget http://effbot.org/media/downloads/elementtree-1.2.7-20070827-preview.zip
unzip elementtree-1.2.7-20070827-preview.zip
cd elementtree-1.2.7-20070827-preview
python setup.py install
cd ..
4.安装supervisord
wget https://pypi.python.org/packages/source/s/supervisor/supervisor-3.1.1.tar.gz
tar zxvf supervisor-3.0a9.tar.gz
cd supervisor-3.0a9
python setup.py install
安装好以后,有两个可执行文件和一个脚本文件
/usr/local/bin/supervisord -- supervisor服务守护进程
/usr/local/bin/supervisorctl -- supervisor服务控制程序,比如:status/start/stop/restart xx 等
/usr/local/bin/echo_supervisord_conf -- supervisor产生配置文件样例
# echo_supervisord_conf > /etc/supervisord.conf -- 生成配置文件
二、Supervisor配置
[plain] view plain copy print?
- #vi /etc/supervisord.conf
-
- [unix_http_server] ; supervisord的unix socket服务配置
- file=/tmp/supervisor.sock ; socket文件的保存目录
- ;chmod=0700 ; socket的文件权限 (default 0700)
- ;chown=nobody:nogroup ; socket的拥有者和组名
- ;username=user ; 默认不需要登陆用户 (open server)
- ;password=123 ; 默认不需要登陆密码 (open server)
-
- [inet_http_server] ; supervisord的tcp服务配置
- ; Web管理界面设定
- port=127.0.0.1:9001 ; tcp端口
- username=user ; tcp登陆用户
- password=123 ; tcp登陆密码
-
- [supervisord] ; supervisord的主进程配置
- logfile=/tmp/supervisord.log ; 主要的进程日志配置
- logfile_maxbytes=50MB ; 最大日志体积,默认50MB
- logfile_backups=10 ; 日志文件备份数目,默认10
- loglevel=info ; 日志级别,默认info; 还有:debug,warn,trace
- pidfile=/tmp/supervisord.pid ; supervisord的pidfile文件
- nodaemon=false ; 是否以守护进程的方式启动
- minfds=1024 ; 最小的有效文件描述符,默认1024
- minprocs=200 ; 最小的有效进程描述符,默认200
- ;umask=022 ; 进程文件的umask,默认200
- ;user=chrism ; 默认为当前用户,如果为root则必填
- ;identifier=supervisor ; supervisord的表示符, 默认时'supervisor'
- ;directory=/tmp ; 默认不cd到当前目录
- ;nocleanup=true ; 不在启动的时候清除临时文件,默认false
- ;childlogdir=/tmp ; ('AUTO' child log dir, default $TEMP)
- ;environment=KEY=value ; 初始键值对传递给进程
- ;strip_ansi=false ; (strip ansi escape codes in logs; def. false)
-
- [supervisorctl]
- serverurl=unix:///tmp/supervisor.sock ; use a unix:// URL for a unix socket
- ;username=chris ; 如果设置应该与http_username相同
- ;password=123 ; 如果设置应该与http_password相同
- ;prompt=mysupervisor ; 命令行提示符,默认"supervisor"
- ;history_file=~/.sc_history ; 命令行历史纪录
-
- ; 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
-
- ; 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 ; 运行的程序 (相对使用PATH路径, 可以使用参数)
- ;process_name=%(program_name)s ; 进程名表达式,默认为%(program_name)s
- ;numprocs=1 ; 默认启动的进程数目,默认为1
- ;events=EVENT ; event notif. types to subscribe to (req'd)
- ;buffer_size=10 ; 事件缓冲区队列大小,默认10
- ;directory=/tmp ; 在运行前cwd到指定的目录,默认不执行cmd
- ;umask=022 ; 进程umask,默认None
- ;priority=-1 ; 程序运行的优先级,默认-1
- ;autostart=true ; 默认随supervisord自动启动,默认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 ; 期望的退出码,默认0,2
- ;stopsignal=QUIT ; 杀死进程的信号,默认TERM
- ;stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
- ;stopasgroup=false ; 向unix进程组发送停止信号,默认false
- ;killasgroup=false ; 向unix进程组发送SIGKILL信号,默认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)
-
- [group:appgroup]
- programs=wapp,wfapp ; 任何在[program:x]中定义的x
- ;priority=999 ; 程序运行的优先级,默认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
-
- ; 管理的单个进程的配置,可以添加多个program
- [program:cobar]
- ; 被监控程序指定的运行脚本
- ; 如果command的栏运行的是shell脚本,那么在shell 脚本启动被监控程序时要用exec修饰。例如:
- ; echo $RUN_CMD
- ; eval exec $RUN_CMD
- ; 否则,supervisord停止不了启动的进程.除此之外,shell脚本里不能出现&之类的后台运行符号
- command=/bin/sh /home/jfy/soft/cobar-server-1.2.7/bin/startup2.sh
- ;process_name=%(program_name)s ; 进程名表达式,默认为%(program_name)s
- ;numprocs=1 ; 默认启动的进程数目,默认为1
- directory=/home/jfy/soft/cobar-server-1.2.7/bin ; 在运行前cwd到指定的目录,默认不执行cmd
- ;umask=022 ; 进程umask,默认None
-
- priority=1 ; 程序运行的优先级,默认999
- autostart=true ; 默认随supervisord自动启动,默认true
- autorestart=true ; 被监控程序异常中断是否自动重启
- startsecs=5 ; 被监控程序启动时持续时间
- startretries=5 ; 被监控程序启动失败重试的次数
- ;exitcodes=0,2 ; 期望的退出码,默认0,2
- ;stopsignal=QUIT ; 杀死进程的信号,默认TERM
- ;stopwaitsecs=10 ; max num secs to wait b4 SIGKILL (default 10)
- ;stopasgroup=false ; 向unix进程组发送停止信号,默认false
- ;killasgroup=false ; 向unix进程组发送SIGKILL信号,默认false
- ;user=root ; 为运行程序的unix帐号设置setuid
- redirect_stderr=true ; 将标准错误重定向到标准输出,默认false
- stdout_logfile=/home/jfy/soft/cobar-server-1.2.7/logs/console.log ; stdou 重定向输出文件
- ;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:cardapi]
- command=/usr1/app/run/CARDAPI /usr1/app/ini/cardapi.ini /usr1/app/log/cardapi.tr
- priority=1
- numprocs=1
- autostart=true
- autorestart=true
-
- ; 配置一组进程,对于类似的program可以通过这种方式添加,避免手工一个个添加
- ;[program:bsapp]
- ;command=/usr1/app/run/%(program_name)s_%(process_num)02d wapp /usr1/app/log/%(program_name)s_%(process_num)02d.tr
- ;numprocs=3
- ;process_name=%(program_name)s_%(process_num)02d
- ;autostart=true
- ;autorestart=true</span><span style="font-family: 微软雅黑, 'Microsoft YaHei', Oswald, 'Helvetica Neue', Helvetica, Verdana, arial, sans-serif;">
(更多配置说明请参考:http://supervisord.org/configuration.html)
三、Supervisor管理
Supervisord安装完成后有两个可用的命令行supervisor和supervisorctl。
启动Supervisord
# supervisord
启动时指定配置文件
# supervisord -c /etc/supervisord.conf
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- # supervisord --help
- supervisord -- run a set of applications as daemons.
-
- Usage: /usr/bin/supervisord [options]
-
- Options:
- -c/--configuration FILENAME -- configuration file
- -n/--nodaemon -- run in the foreground (same as 'nodaemon true' in config file)
- -h/--help -- print this usage message and exit
- -v/--version -- print supervisord version number and exit
- -u/--user USER -- run supervisord as this user (or numeric uid)
- -m/--umask UMASK -- use this umask for daemon subprocess (default is 022)
- -d/--directory DIRECTORY -- directory to chdir to when daemonized
- -l/--logfile FILENAME -- use FILENAME as logfile path
- -y/--logfile_maxbytes BYTES -- use BYTES to limit the max size of logfile
- -z/--logfile_backups NUM -- number of backups to keep when max bytes reached
- -e/--loglevel LEVEL -- use LEVEL as log level (debug,info,warn,error,critical)
- -j/--pidfile FILENAME -- write a pid file for the daemon process to FILENAME
- -i/--identifier STR -- identifier used for this instance of supervisord
- -q/--childlogdir DIRECTORY -- the log directory for child process logs
- -k/--nocleanup -- prevent the process from performing cleanup (removal of
- old automatic child log files) at startup.
- -a/--minfds NUM -- the minimum number of file descriptors for start success
- -t/--strip_ansi -- strip ansi escape codes from process output
- --minprocs NUM -- the minimum number of processes available for start success
- --profile_options OPTIONS -- run supervisord under profiler and output
- results based on OPTIONS, which is a comma-sep'd
- list of 'cumulative', 'calls', and/or 'callers',
- e.g. 'cumulative,callers')
supervisorctl命令行控制程序
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- # supervisorctl
- appgroup:wapp RUNNING pid 42981, uptime 0:01:45
- appgroup:wfapp RUNNING pid 42982, uptime 0:01:45
- cardapi RUNNING pid 33133, uptime 1:02:32
- cobar RUNNING pid 6761, uptime 22:43:42
- gearmand RUNNING pid 6743, uptime 22:43:53
- memcached RUNNING pid 6728, uptime 22:44:05
- supervisor> help
- default commands (type help <topic>):
- =====================================
- add clear fg open quit remove restart start stop update
- avail exit maintail pid reload reread shutdown status tail version
-
- stop <name> 停止某一个进程(name),name为[program:cobar]里配置的值,这个示例就是cobar。
- start <name> 启动某个进程
- restart <name> 重启某个进程
- stop <gname>:* 重启属于名为gname这个分组的进程(start,restart同理) ,如:stop appgroup:wapp
- stop all 停止全部进程,注:start、restart、stop都不会载入最新的配置文件。
- 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。
- 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。 注意:显示用stop停止掉的进程,用reload或者update都不会自动重启。
OK,基本的操作就是类似这个了
supervisor还支持以WEB方式监控管理进程
找到[inet_http_server]这一段,修改成
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- [inet_http_server] ; inet (TCP) server disabled by default
- port=*:9001 ; (ip_address:port specifier, *:port for all iface)
- username=admin ; (default is no username (open server))
- password=123 ; (default is no password (open server))
其中port这个字段要各位注意,如果*:9001表示允许所有ip访问,如果指定单个IP可以 xx.xx.xx.xx:9001 这样既可。如果你开启了iptabls记得要在规则里允许port指定的端口号。
然后保存配置,重启supervisord
# supervisord reload
启用浏览器访问效果: