1. Supervisor是一個C/S系統,它可以在類unix操作系統讓用戶來監視和控制後臺服務進程的數量，一個很重要的功能就是監控服務器的主要後臺進程，並在出現問題是自動重啓。
2. 根據服務器上的python版本下載對應的setuptools
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Python 2.6.6 wget http://pypi.python.org/packages/2.6/s/setuptools/setuptools-0.6c11-py2.6.egg#md5=bfa92100bd772d5a213eedd356d64086 直接安裝 sh setuptools-0.6c11-py2.6.egg |
3. 下載並安裝supervisor
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wget http://pypi.python.org/packages/source/s/supervisor/supervisor-3.0b1.tar.gz tar -zxvf supervisor-3.0b1.tar.gz cd supervisor-3.0b1 python setup.py install
安裝setuptools後也可以 easy_install supervisor |
4. 設定supervisor配置文件
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創建默認的配置文件 echo_supervisord_conf >/etc/supervisord.conf vi /etc/supervisord.conf
取消以下的註釋,並修改IP爲0.0.0.0 [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))
增加自定義的後臺進程(注意進程名之間用一個:分隔) [program:hello] command=python /root/hello.py priority=1 numprocs=1 autostart=true autorestart=true startretries=10 stopsignal=KILL stopwaitsecs=10 redirect_stderr=true stdout_logfile=/root/hello.log |
5. 設定supervisor啓動文件
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vi /etc/init.d/supervisord
#! /bin/sh PATH=/sbin:/bin:/usr/sbin:/usr/bin PROGNAME=supervisord DAEMON=/usr/bin/$PROGNAME CONFIG=/etc/$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 "..." } stop() { echo -n "Stopping $DESC: $PROGNAME" supervisor_pid=$(cat $PIDFILE) kill -15 $supervisor_pid echo "..." } case "$1" in start) start ;; stop) stop ;; restart) stop start ;; *) echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2 exit 1 ;; esac exit 0 |
6. 寫一個簡單的python腳本
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安裝web.py easy_install web.py
vi /root/hello.py
import web urls = ( '/(.*)', 'hello' ) app = web.application(urls, globals())
class hello: def GET(self, name): if not name: name = 'World' return 'Hello, ' + name + '!'
if __name__ == "__main__": app.run()
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7. 啓動supervisor服務,並觀察hello服務狀態
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/etc/init.d/supervisord start
查看日誌 tail -f /tmp/supervisord.log 2012-11-09 15:33:53,367 WARN received SIGTERM indicating exit request 2012-11-09 15:33:53,367 INFO waiting for :hello to die 2012-11-09 15:33:53,371 INFO stopped: :hello (terminated by SIGKILL) 2012-11-09 15:33:53,514 CRIT Supervisor running as root (no user in config file) 2012-11-09 15:33:53,552 INFO RPC interface 'supervisor' initialized 2012-11-09 15:33:53,552 CRIT Server 'unix_http_server' running without any HTTP authentication checking 2012-11-09 15:33:53,560 INFO daemonizing the supervisord process 2012-11-09 15:33:53,562 INFO supervisord started with pid 13698 2012-11-09 15:33:54,568 INFO spawned: ':hello' with pid 13699 2012-11-09 15:33:55,572 INFO success: :hello entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
可以使用supervisorctl管理進程 upervisorctl status 查詢狀態 supervisorctl start hello 開啓服務 supervisorctl stop hello 關閉服務 |
8. 之前配置文件開啓了web訪問,這樣可以直接通過瀏覽器觀察和控制進程，非常方便
參考資料