Supervisor
安装supervisor
- 利用python的pip或者easy_install来安装
easy_install supervisor
或者
pip installsupervisor
生成默认配置文件
echo_supervisord_conf > /etc/supervisord.conf
启动准备
mkdir /etc/supervisord.conf.d
#include区段修改为
[include]
files =/etc/supervisord.conf.d/*.conf
#如需要访问web控制界面，inet_http_server区段修改为
[inet_http_server]
port=0.0.0.0:9001
username=username ; 你的用户名
password=password ; 你的密码
- 每个需要管理的进程分别写在一个文件里面，放在/etc/supervisord.conf.d/目录下，便于管理。例如：test.conf
将supervisord加入系统服务
vim /etc/init.d/supervisord
# Supervisor is a client/server system that
# allows its users to monitor and control a
# number of processes on UNIX-like operating
# systems.
#
# chkconfig: - 64 36
# description: Supervisor Server
# processname: supervisord
# Source init functions
. /etc/init.d/functions
RETVAL=0
prog="supervisord"
pidfile="/tmp/supervisord.pid"
lockfile="/var/lock/subsys/supervisord"
start()
{
echo -n $"Starting $prog: "
daemon --pidfile $pidfile supervisord -c /etc/supervisord.conf
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && touch ${lockfile}
}
stop()
{
echo -n $"Shutting down $prog: "
killproc -p ${pidfile} /usr/bin/supervisord
RETVAL=$?
echo
if [ $RETVAL -eq 0 ] ; then
rm -f ${lockfile} ${pidfile}
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
status)
status $prog
;;
restart)
stop
start
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
;;
esac
chmod +x /etc/init.d/supervisord
chkconfig supervisordon
service supervisord start
配置文件实例，主要为末尾部分
; Sample supervisor config file.
;
; For more information on the config file, please see:
; http://supervisord.org/configuration.html
;
; Notes:
; - Shell expansion ("~" or "$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=0.0.0.0:9001 #修改可以访问的ip地址，一般为全部可以访问 ; (ip_address:port specifier, *:port for all iface)
;username=root ; (default is no username (open server))
;password=test ; (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.
;[include]
;files = files = /etc/supervisord.conf.d/*.conf ##修改的地方
#添加以下内容在第一个节点上，其他节点只需要最后的;storm supervisor
; storm nimbus
[program:storm-nimbus]
command=/data/dmp/storm/bin/nimbus-start.sh
directory=/data/dmp/storm
autorestart=true
autostart=true
startsecs=5
startretries=20
stopsignal=QUIT
user=root
; storm ui
[program:storm-ui]
command=/data/dmp/storm/bin/ui-start.sh
directory=/data/dmp/storm
autorestart=true
autostart=true
startsecs=5
startretries=20
user=root
;storm supervisor
[program:storm-supervisor]
command=/data/dmp/storm/bin/supervisor-start.sh
directory=/data/dmp/storm
autorestart=true
autostart=true
startsecs=5
startretries=20
user=root
配置文件说明
;*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)
;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
常用信号说明
| 信号名称 |
数字表示 |
说明 |
| SIGHUP |
1 |
终端挂起或控制进程终止。当用户退出Shell时，由该进程启动的所有进程都会收到这个信号，默认动作为终止进程。 |
| SIGINT |
2 |
键盘中断。当用户按下组合键时，用户终端向正在运行中的由该终端启动的程序发出此信号。默认动作为终止进程。 |
| SIGQUIT |
3 |
键盘退出键被按下。当用户按下或组合键时，用户终端向正在运行中的由该终端启动的程序发出此信号。默认动作为退出程序。 |
| SIGFPE |
8 |
发生致命的运算错误时发出。不仅包括浮点运算错误，还包括溢出及除数为0等所有的算法错误。默认动作为终止进程并产生core文件。 |
| SIGKILL |
9 |
无条件终止进程。进程接收到该信号会立即终止，不进行清理和暂存工作。该信号不能被忽略、处理和阻塞，它向系统管理员提供了可以杀死任何进程的方法。 |
| SIGALRM |
14 |
定时器超时，默认动作为终止进程。 |
| SIGTERM |
15 |
程序结束信号，可以由 kill 命令产生。与SIGKILL不同的是，SIGTERM 信号可以被阻塞和终止，以便程序在退出前可以保存工作或清理临时文件等。 |