Linux进程监控服务Supervisor快速入门
官网地址： http://www.supervisord.org/
准备
1、 系统中需安装Python环境，我本机python为2.6.6
2、 下载安装supervisor所需软件
安装
以上四个都为python相关插件，分别解压后，进入各自所在目录中，使用python setup.py install命令安装，其安装顺序依次为：
elementtree、meld3、setuptools、supervisor
⚠️在安装setuptools时需要先执行python bootstrap.py，然后执行python setup.py install命令安装
添加配置文件
配置文件 /etc/supervisord.conf 配置内容如下：
[unix_http_server]
file = /var/run/supervisor.sock
chmod = 0777
chown= root:root
[inet_http_server]
# Web管理界面设定
port=node03:9001
;username = admin
;password = yourpassword
[supervisorctl]
; 必须和'unix_http_server'里面的设定匹配
serverurl = unix:///var/run/supervisor.sock
[supervisord]
logfile=/var/log/supervisord/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=/var/run/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)
user=root ; (default is current user, required if root)
childlogdir=/var/log/supervisord/ ; ('AUTO' child log dir, default $TEMP)
[rpcinterface:supervisor]
supervisor.rpcinterface_factory = supervisor.rpcinterface:make_main_rpcinterface
;管理的单个进程的配置，可以添加多个program
[program:cat]
command=/bin/cat
autostart = true
startsecs = 5
user = root
redirect_stderr = true
; 对这个program的log的配置，上面的logfile_maxbytes是supervisord本身的log配置
stdout_logfile_maxbytes = 20MB
stdoiut_logfile_backups = 20
stdout_logfile = /var/log/supervisord/cat.log启动服务
方式一：
# supervisord
方式二：
# supervisord -c /path/to/supervisord.conf
方式一启动时会自己寻找/etc/supervisord.conf文件；方式二通过-c参数指定配置文件所在路径
启动后可以通过Web界面查看服务运行情况，服务地址为：node1:9001
管理服务
使用supervisorctl命令进行服务管理操作：
[root@node1 zxm]# supervisorctl
chatdemon RUNNING pid 47457, uptime 0:07:38
test RUNNING pid 47456, uptime 0:07:38
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
supervisor> status
cat RUNNING pid 47555, uptime 0:00:08
chatdemon RUNNING pid 47554, uptime 0:00:08
test RUNNING pid 47553, uptime 0:00:08[include]标签
可以使用[include]标签来指定应用程序配置文件，例如：
[zxm@node1 supervise-programs]# cat /etc/supervisord.conf
... ...
[include]
files= /home/zxm/works/supervise-programs/cat.conf/home/zxm/works/supervise-programs/cat.conf内容如下：
[zxm@node1 supervise-programs]# cat cat.conf
[program:cat]
command=/bin/cat
autostart = true
startsecs = 5
user = root
redirect_stderr = true
; 对这个program的log的配置，上面的logfile_maxbytes是supervisord本身的log配置
stdout_logfile_maxbytes = 20MB
stdoiut_logfile_backups = 20
stdout_logfile = /var/log/supervisord/cat.log