进程状态监控工具 ps-wathcher

公司运营服务器的http、squid、snmp进程有时莫名其妙自己挂掉，光靠手动启动实在是太麻烦，用google搜索“process monitor”意外找到ps-watcher这个小工具，试验后觉得非常好用，可以监控指定的进程状态，进程挂掉后自动重新启动进程。

 

文档：

下载：

 

安装

# cd ps-watcher-1.06

# ./configure –prefix=/usr/local/ps-watcher

 

安装缺少的perl模块

Need package “Config::IniFiles”: Can’t locate Config/IniFiles.pm in @INC

# perl -MCPAN -e shell

Are you ready for manual configuration? [yes] no

cpan> i /IniFiles/

cpan> install Config::IniFiles

cpan> exit

 

# ./configure –prefix=/usr/local/ps-watch

# make

# make check

# make install

# /usr/local/ps-watcher/bin/ps-watcher –config /usr/local/ps-watcher/bin/config.ini –log /usr/local/ps-watcher/bin/ps-watcher.log

 

config.ini示例

监控httpd与squid进程

ps-watcher每300秒检查进行，当发现httpd进程消失时，重新执行它们。

# vi config.ini

[(/usr/local/apache2/bin/)?httpd]

occurs = none

action = /usr/local/apache2/bin/apachectl -k start

[(/usr/local/squid/sbin/)?squid]

occurs = none

action = /usr/local/squid/sbin/squid -Ds

 

显示进程数

# vi config.ini

[httpd]

action = echo “There are $count instances of httpd running”

# tail –f log

ps-watcher: Starting: $Id: ps-watcher.in.in,v 1.25 2003/07/10 11:50:21 rockyb Exp $

ps-watcher: There are 16 instances of httpd running

 

统计进程数

# vi config.ini

[httpd]

trigger = $count < 17

action = echo “There are $count instances of httpd running – less than 17″

# tail log

ps-watcher: Starting: $Id: ps-watcher.in.in,v 1.25 2003/07/10 11:50:21 rockyb Exp $

ps-watcher: There are 16 instances of httpd running – less than 17