作用:自动配置客户端的hosts文件,解决网络内的计算机之间计算机名称解析问题,适用于没有部署DNS服务器的内网环境。
1、服务端配置puppet模块
(1)模块清单
[root@puppet ~]# tree /etc/puppet/modules/host/ /etc/puppet/modules/host/ ├── files ├── manifests │ └── init.pp └── templates
(2)定义host主类
[root@puppet ~]# vi /etc/puppet/modules/host/manifests/init.pp class host { host { ‘puppet.ewin.com‘: #计算机名称 ensure => present, #基础属性,应用此资源 host_aliases => "puppet", #计算机别名,可以多个 ip => "10.188.1.73", #计算机IP地址 } host { ‘zabbix.ewin.com‘: ensure => present, host_aliases => "zabbix", ip => "10.188.1.103", } host { ‘centostest.ewin.com‘: ensure => present, host_aliases => "centostest", ip => "10.188.1.85", } host { ‘ywzhou-pc.ewin.com‘: ensure => present, host_aliases => "ywzhou-pc", ip => "10.188.1.172", } }
说明:有多少条解析记录就写多少个host资源,需要注意的是计算机的IP必须固定,使用了DHCP服务的最好在DHCP服务器或路由器上进行保留或绑定;
或者手动设定IP,还可以通过puppet来管理客户端的主机名和IP。
(3)定义节点文件,调用模块
[root@puppet ~]# vi /etc/puppet/manifests/centostest.pp node "centostest.ewin.com" { include ntp, yum, puppet, host }
(4)应用节点文件
[root@puppet ~]# vi /etc/puppet/manifests/site.pp import "centostest.pp"
2、测试
(1)客户端执行前查看hosts文件
[root@centostest ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.188.1.103 zabbix.ewin.com 10.188.1.73 puppet.ewin.com
说明:这是安装客户端时手动设置的。
(2)客户端执行puppet agent -t后查看日志
[root@centostest ~]# tailf /var/log/messages Nov 11 14:22:39 centostest puppet-agent[20214]: (/Stage[main]/Host/Host[zabbix.ewin.com]/host_aliases) defined ‘host_aliases‘ as ‘zabbix‘ Nov 11 14:22:39 centostest puppet-agent[20214]: (/Stage[main]/Host/Host[ywzhou-pc.ewin.com]/ensure) created Nov 11 14:22:39 centostest puppet-agent[20214]: (/Stage[main]/Host/Host[centostest.ewin.com]/ensure) created Nov 11 14:22:39 centostest puppet-agent[20214]: (/Stage[main]/Host/Host[puppet.ewin.com]/host_aliases) defined ‘host_aliases‘ as ‘puppet‘ Nov 11 14:22:40 centostest puppet-agent[20214]: Finished catalog run in 1.13 seconds
说明:对原有的记录进行修改,增加了别名记录,没有的就创建。
(3)客户端再次查看hosts文件
[root@centostest ~]# cat /etc/hosts # HEADER: This file was autogenerated at Tue Nov 11 14:22:39 +0800 2014 # HEADER: by puppet. While it can still be managed manually, it # HEADER: is definitely not recommended. 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.188.1.103 zabbix.ewin.com zabbix 10.188.1.73 puppet.ewin.com puppet 10.188.1.172 ywzhou-pc.ewin.com ywzhou-pc 10.188.1.85 centostest.ewin.com centostest
结论:可以看到对已有的条目添加了别名,没有的就新增了记录,这样就相当于建立了一个半自动的DNS;但是当计算机太多时最好还是搭建一个内网DNS服务器。
有新的记录就直接写在class host里,通过puppet发布到客户端,所有调用了host类的客户端就自动更新了。
3、host资源
host { ‘resource title‘: name => #主机名,可以写在标题中 ensure => #基本参数,present, absent comment => #注释说明 host_aliases => #别名 ip => #IP地址 target => #保住服务信息的文件,大部分系统默认是/etc/hosts }
本文出自 “月晴星飞” 博客,请务必保留此出处http://ywzhou.blog.51cto.com/2785388/1577432
原文地址:http://ywzhou.blog.51cto.com/2785388/1577432