Puppet node节点的特性(十二)
前言:生产机器很多通常会新建nodes.pp文件和site.pp文件平级，存放于/etc/puppet/manifests/nodes.pp文件,这种方法比较常用.当然也有其他办法直接写入site.pp文件.
nodes.pp文件主机匹配,支持正则表达式和继承.
//:正则匹配
"":精确匹配
inherits:继承
实例:
先正则匹配然后在精确匹配.
node /sh-(proxy|web)\d+/ {
case $::hostname {
"sh-proxy2": {
include apache
user {"test1":
ensure => present,
}
}
"sh-web1": {
include nginx::nginxconf
}
}
}
比如sh-proxy不止sh-proxy2一台，有50台也可以匹配操作:
node /sh-(proxy|web)\d+/ {
case $::hostname {
/sh-proxy\d+/: { #正则匹配
include apache
user {"test1":
ensure => present,
}
}
"sh-web1": {
include nginx::nginxconf
}
}
}
测试agent端更新:
# puppet agent -t
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for sh-proxy2.localdomain
Info: Applying configuration version '1505706252'
Notice: /Stage/Apache/Package/ensure: created
Notice: Finished catalog run in 8.69 seconds
node节点继承(inherits)
1、新建一个admin模块,做selinux替换关闭.
/modules/admin/manifests/init.pp文件内容:
class admin {
exec {"selinux":
command => "sed -i '/^SELINUX=/s/=.*/=disabled/g' /etc/sysconfig/selinux",
path => ["/bin/","/sbin/","/usr/bin/","/usr/sbin/"],
user => root,
group => root,
}
}
注意:尝试定义类名'base'报错，现象:svn无法提交,但却可以更新，update后获取到master主机ip地址目录等信息,不确实是否和系统内置变量冲突.
manifests/nodes.pp文件内容.
node base {
include admin
}
node /sh-(proxy|web)\d+/inherits base {
case $::hostname {
/sh-proxy\d+/: {
include apache
user {"test1":
ensure => present,
}
}
"sh-web1": {
include nginx::nginxconf
}
}
}
注意:node节点名不能和模块名冲突,尝试定义为node admin，提交无报错，但是agent端无更新无修改无提示,修改为base以后agent端内容更新.
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