1.下载并安装supervisor
https://pypi.python.org/pypi/supervisor/3.2.0 tar -zxvf supervisor-3.2.0.tar.gz cd supervisor-3.2.0 python setup.py install
2.测试supervisord是否安装成功
[root conf.d]# echo_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".
; - 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.
3.建立文件夹,把应用的配置文件单独放置
mkdir -p /opt/app/supervisor mkdir -p /opt/app/supervisor/conf.d
4.创建默认的配置文件,并修改配置
echo_supervisord_conf >/opt/app/supervisor/supervisord.conf vi /etc/supervisord.conf [inet_http_server] ; inet (TCP) server disabled by default port=0.0.0.0:9001 ; (ip_address:port specifier, *:port for all iface) username=user ; (default is no username (open server)) password=123 ; (default is no password (open server))
[include] files = ./conf.d/*.conf
5.设定supervisor启动文件
vi /etc/init.d/supervisord
#! /usr/bin/env bash
# chkconfig: - 85 15
PATH=/sbin:/bin:/usr/sbin:/usr/bin
PROGNAME=supervisord
DAEMON=/usr/bin/$PROGNAME
CONFIG=/opt/app/supervisor/$PROGNAME.conf
PIDFILE=/tmp/$PROGNAME.pid
DESC="supervisord daemon"
SCRIPTNAME=/etc/init.d/$PROGNAME
# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0
start()
{
echo -n "Starting $DESC: $PROGNAME"
$DAEMON -c $CONFIG
echo ".............start success"
}
stop()
{
echo "Stopping $DESC: $PROGNAME"
if [ -f "$PIDFILE" ];
then
supervisor_pid=$(cat $PIDFILE)
kill -15 $supervisor_pid
echo "......"
echo "stop success"
else
echo "$DESC: $PROGNAME is not Runing"
echo ".........................stop sucess"
fi
}
status()
{ statusport=`netstat -lntp|grep 9001|awk -F ' ' '{print $4}'|awk -F ':' '{print $2}'`
if [ -f "$PIDFILE" ];
then
supervisor_pid=$(cat $PIDFILE)
echo "$DESC: $PROGNAME is Runing pid=$supervisor_pid"
else
echo "$DESC: $PROGNAME is not Runing"
echo "please use command /etc/init.d/supervisord start Run the service"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
start
;;
status)
status
;;
*)
echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2
exit 1
;;
esac
exit 0
添加为自启动、启动、关闭
chkconfig supervisord on //添加自启动服务 service supervisord start //启动服务 service supervisord stop //停止服务
6.增加自定义的后台进程
vi /opt/app/supervisor/conf.d/salt-minion.conf [program:salt-minion] command=salt-minion autostart=true autorestart=true
以后可以按照每个应用分别写一个配置文件。
6.1(program)配置模板
[program:cat] command=/bin/cat process_name=%(program_name)s numprocs=1 directory=/tmp umask=022 priority=999 autostart=true autorestart=true startsecs=10 startretries=3 exitcodes=0,2 stopsignal=TERM stopwaitsecs=10 user=chrism redirect_stderr=false stdout_logfile=/a/path stdout_logfile_maxbytes=1MB stdout_logfile_backups=10 stdout_capture_maxbytes=1MB stderr_logfile=/a/path stderr_logfile_maxbytes=1MB stderr_logfile_backups=10 stderr_capture_maxbytes=1MB environment=A="1",B="2" serverurl=AUTO
6.2简化模板
[program:test] command=python test.py directory=/home/supervisor_test/ autorestart=true stopsignal=INT user=root stdout_logfile=test_out.log stdout_logfile_maxbytes=1MB stdout_logfile_backups=10 stdout_capture_maxbytes=1MB stderr_logfile=test_err.log stderr_logfile_maxbytes=1MB stderr_logfile_backups=10 stderr_capture_maxbytes=1MB
6.3(program)配置说明;*为必须填写项;*[program:应用名称][program:cat]
;*命令路径,如果使用python启动的程序应该为 python /home/test.py, ;不建议放入/home/user/, 对于非user用户一般情况下是不能访问 command=/bin/cat ;当numprocs为1时,process_name=%(program_name)s ;当numprocs>=2时,%(program_name)s_%(process_num)02d process_name=%(program_name)s ;进程数量 numprocs=1 ;执行目录,若有/home/supervisor_test/test1.py ;将directory设置成/home/supervisor_test ;则command只需设置成python test1.py ;否则command必须设置成绝对执行目录 directory=/tmp ;掩码:--- -w- -w-, 转换后rwx r-x w-x umask=022 ;优先级,值越高,最后启动,最先被关闭,默认值999 priority=999 ;如果是true,当supervisor启动时,程序将会自动启动 autostart=true ;*自动重启 autorestart=true ;启动延时执行,默认1秒 startsecs=10 ;启动尝试次数,默认3次 startretries=3 ;当退出码是0,2时,执行重启,默认值0,2 exitcodes=0,2 ;停止信号,默认TERM ;中断:INT(类似于Ctrl+C)(kill -INT pid),退出后会将写文件或日志(推荐) ;终止:TERM(kill -TERM pid) //信号量参考文章（http://c.biancheng.net/cpp/html/2784.html）
;挂起:HUP(kill -HUP pid),注意与Ctrl+Z/kill -stop pid不同 ;从容停止:QUIT(kill -QUIT pid) ;KILL, USR1, USR2其他见命令(kill -l),说明1 stopsignal=TERM stopwaitsecs=10 ;*以root用户执行 user=root ;重定向 redirect_stderr=false stdout_logfile=/a/path stdout_logfile_maxbytes=1MB stdout_logfile_backups=10 stdout_capture_maxbytes=1MB stderr_logfile=/a/path stderr_logfile_maxbytes=1MB stderr_logfile_backups=10 stderr_capture_maxbytes=1MB ;环境变量设置 environment=A="1",B="2" serverurl=AUTO
7.启动supervisor服务,并观察salt-minion服务状态
2016-06-12 17:39:57,643 INFO stopped: salt-minion (terminated by SIGTERM) 2016-06-12 17:39:57,866 CRIT Supervisor running as root (no user in config file) 2016-06-12 17:39:57,866 WARN Included extra file "/opt/app/supervisor/./conf.d/salt-minion.conf" during parsing 2016-06-12 17:39:57,928 INFO RPC interface 'supervisor' initialized 2016-06-12 17:39:57,929 INFO RPC interface 'supervisor' initialized 2016-06-12 17:39:57,929 CRIT Server 'unix_http_server' running without any HTTP authentication checking 2016-06-12 17:39:57,931 INFO daemonizing the supervisord process 2016-06-12 17:39:57,931 INFO supervisord started with pid 18939 2016-06-12 17:39:58,938 INFO spawned: 'salt-minion' with pid 18940 2016-06-12 17:39:59,940 INFO success: salt-minion entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
8.命令使用
Supervisor 有两个可执行程序 — supervisord 和 supervisorctl:
supervisord 是后台管理服务器, 用来依据配置文件的策略管理后台守护进程;
supervisorctl 用于管理员向后台管理程序发送 启动/重启/停止 等指令;
它们之间的关系就相当于 Apache 的 httpd 和 apachectl.
8.1查看所有命令
[root~]# supervisorctl help default commands (type help <topic>): ===================================== add exit open reload restart start tail avail fg pid remove shutdown status update clear maintail quit reread signal stop version
supervisord，初始启动Supervisord，启动、管理配置中设置的进程。
supervisorctl stop programxxx，停止某一个进程(programxxx)，programxxx为[program:chatdemon]里配置的值
，这个示例就是chatdemon。
supervisorctl start programxxx，启动某个进程
supervisorctl restart programxxx，重启某个进程
supervisorctl stop groupworker: ，重启所有属于名为groupworker这个分组的进程(start,restart同理)
supervisorctl stop all，停止全部进程，注：start、restart、stop都不会载入最新的配置文件。
supervisorctl 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。
supervisorctl 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。
8.2进入命令行
[root ~]# supervisorctl Server requires authentication Username:user Password: salt-minion RUNNING pid 18940, uptime 16:11:41 supervisor> help default commands (type help <topic>): ===================================== add exit open reload restart start tail avail fg pid remove shutdown status update clear maintail quit reread signal stop version
#显示某个命令的用法 supervisor> help add add <name> [...] Activates any updates in config for process/group supervisor> help reload reload Restart the remote supervisord. #停止某个进程 supervisor> stop publisher_for_summary publisher_for_summary: stopped #查看此时此刻的状态 supervisor> status publisher_for_detail RUNNING pid 27557, uptime 0:05:41 publisher_for_detail_nt RUNNING pid 27567, uptime 0:05:41 publisher_for_summary STOPPED Feb 27 02:48 PM publisher_for_summary_nt RUNNING pid 27568, uptime 0:05:41 worker_for_detail_all RUNNING pid 27581, uptime 0:05:41 worker_for_detail_recent RUNNING pid 27582, uptime 0:05:41 worker_for_summary RUNNING pid 27559, uptime 0:05:41 #发现被supervisorctl停掉的进程不会被自动重启 #开启刚才停掉的进程 supervisor> start publisher_for_summary publisher_for_summary: started supervisor> status publisher_for_detail RUNNING pid 27557, uptime 0:08:02 publisher_for_detail_nt RUNNING pid 27567, uptime 0:08:02 publisher_for_summary RUNNING pid 3035, uptime 0:00:04 publisher_for_summary_nt RUNNING pid 27568, uptime 0:08:02 worker_for_detail_all RUNNING pid 27581, uptime 0:08:02 worker_for_detail_recent RUNNING pid 27582, uptime 0:08:02 worker_for_summary RUNNING pid 27559, uptime 0:08:02 #停掉所有进程 supervisor> stop all worker_for_detail_recent: stopped worker_for_detail_all: stopped publisher_for_summary_nt: stopped publisher_for_detail_nt: stopped publisher_for_summary: stopped worker_for_summary: stopped publisher_for_detail: stopped supervisor> status publisher_for_detail STOPPED Feb 27 02:51 PM publisher_for_detail_nt STOPPED Feb 27 02:51 PM publisher_for_summary STOPPED Feb 27 02:51 PM publisher_for_summary_nt STOPPED Feb 27 02:51 PM worker_for_detail_all STOPPED Feb 27 02:51 PM worker_for_detail_recent STOPPED Feb 27 02:51 PM worker_for_summary STOPPED Feb 27 02:51 PM #开启所有进程 supervisor> start all publisher_for_detail: started worker_for_summary: started publisher_for_summary: started publisher_for_detail_nt: started publisher_for_summary_nt: started worker_for_detail_all: started worker_for_detail_recent: started supervisor> status publisher_for_detail RUNNING pid 5111, uptime 0:00:15 publisher_for_detail_nt RUNNING pid 5141, uptime 0:00:15 publisher_for_summary RUNNING pid 5135, uptime 0:00:15 publisher_for_summary_nt RUNNING pid 5147, uptime 0:00:15 worker_for_detail_all RUNNING pid 5153, uptime 0:00:15 worker_for_detail_recent RUNNING pid 5159, uptime 0:00:14 worker_for_summary RUNNING pid 5112, uptime 0:00:15
9.http://10.129.62.42:9001/ 可以查看进程状态
参考文档：
http://www.linuxidc.com/Linux/2012-11/73832.htm
http://supervisord.org/configuration.html
http://www.cnblogs.com/yjf512/archive/2012/03/05/2380496.html
http://my.oschina.net/crooner/blog/395069
http://jwch.sdut.edu.cn/book/server/supervisor.html
http://www.2cto.com/os/201503/378878.html
http://c.biancheng.net/cpp/html/2784.html