用puppet管理cron,可以为N台服务器批量添加cron作业。如定时同步时间服务器的脚本。

1、架构

   192.168.0.200(redhat) 主机名master.gangpao.com

   192.168.0.201(redhat) 主机名agent01.gangpao.com

2、目录结构

   /etc/puppet

        |                 

        |-->manifests                          |   |-->modules.pp                          |   |-->nodes.pp                          |   |-->site.pp                           |-->modules                                       |-->cron                                                    |-->manifests                      |-->addcron.pp                      |-->base.pp                      |-->crontabs.pp                      |-->init.pp                    

3、编写脚本

   建创目录结构

   #mkdir -p /etc/puppet/manifests

   #mkdir -p /etc/puppet/modules/cron/manifests    #cd /etc/puppet/modules/cron/manifests

 (1)、编写base.pp

    功能说明:安装cron包并启动服务

#vim   class cron::base {    package { cron:        name => $operatingsystem ? {   #facter 获取客户端操作系统确定包的名称            ubuntu    => "cron",            debian    => "cron",            redhat    => "vixie-cron",            centos    => "vixie-cron",            },        ensure => present,    }    service { crond:        name => $operatingsystem ? {   #确定启动cron的名称            ubuntu  => "cron",            debian  => "cron",            redhat  => "crond",            centos  => "crond",            },        ensure => running,        enable => true,        pattern => cron,        require => Package["cron"],   #依赖关系    }}

 (2)、编写crontabs.pp       功能说明：安装crontabs包

      #vim crontabs.pp

      class cron::crontabs {          package { crontabs:               name => $operatingsystem ? {               redhat  => "crontabs",               centos  => "crontabs",               },               ensure => present,          }       }

  (3)、编写addcron.pp       功能说明：添加crontab定时任务（定时同步时间服务器每4个小时同步的第1分钟同步）

      #vim addcron.pp

      class cron::addcron {             cron { ntpdate:                command => "/usr/sbin/ntpdate time-b.timefreq.bldrdoc.gov",                user => root,                hour => '*/4',                minute => '1'             }       }

  (4)、编写init.pp        功能说明:初始化文件

       #vim init.php

       class cron {              case $operatingsystem {                  centos: {                     include cron::base                     include cron::crontabs                  }                   redhat: {                     include cron::base

                    include cron::crontabs

                    include cron::addcron     #这三行实现安装添加cron功能                  }                  debian: { include cron::base }                  ubuntu: { include cron::base }                  freebsd: { }              }        }

   (5)、编写主manifests文件实现让客户端安装cron和添加一条crontab作业。

      #cd /etc/puppet/manifests

      #vim modules.pp   #加载cron模块       import "cron"        #vim nodes.pp     #客户端节点管理文件       node 'agent01.gangpao.com'{       include cron       }       #vim site.pp      #加载modules.pp 和nodes.pp       import "modules.pp"       import "nodes.pp"

4、执行脚本    服务端

   #puppetmasterd -d --no-daemonize -v --trace 

   客户端

   #puppet agent --server master.gangpao.com --test 

   info: Caching catalog for agent01.gangpao.com

   info: Applying configuration version '1310314253'

   notice: /Stage[main]/Cron::Addcron/Cron[ntpdate]/minute: minute    changed   '0' to '1'

   notice: /Stage[main]/Cron::Addcron/Cron[ntpdate]/hour: hour changed   '*/2' to '*/4'

   notice: Finished catalog run in 6.65 seconds

 

查看

[root@agent01 puppet]# crontab -l

# HEADER: This file was autogenerated at Mon Jul 11 00:10:19 +0800 2011 by puppet. # HEADER: While it can still be managed manually, it is definitely not recommended. # HEADER: Note particularly that the comments starting with 'Puppet Name' should # HEADER: not be deleted, as doing so could cause duplicate cron jobs. # Puppet Name: ntpdate 1 */4 * * * /usr/sbin/ntpdate time-b.timefreq.bldrdoc.gov

 

可以看到客户端的crontab改变了。

  

    本文转自yuangang_love 51CTO博客，原文链接：http://blog.51cto.com/linux008/607854，如需转载请自行联系原作者