puppet（单机模式）-基于模块方式实现redis主从
说明：puppet模块存放位置有固定要求，不过为了实验方便，先建一个临时目录来存放，当配置完成后移动到指定目录。实现步骤：
1、实现如下目录结构
# tree ~/modules
~/modules
└── redis
├── files
│ └── redis-master.conf
├── lib
├── manifests
│ ├── init.pp
│ ├── master.pp
│ └── slave.pp
├── spec
├── templates
│ └── redis-slave.conf.erb
└── tests
mkdir -pv modules/redis/{manifests,files,templates,tests,lib,spec}
files以及templates文件夹下的文件内容大致同默认的配置文件，只是修改模板文件的slaveof指向master主机
2、编辑所需的清单文件
vim manifests/init.pp
class redis {
package {'redis':
ensure => installed,
}
service {'redis':
ensure => running,
enable => true,
hasrestart => true,
hasstatus => true,
}
}
vim manifests/master.pp
class redis::master inherits redis {
file{'/etc/redis.conf':
ensure => file,
source => 'puppet:///modules/redis/redis-master.conf',
owner => 'redis',
group => 'root',
mode => 0640,
}
Package['redis'] -> File['/etc/redis.conf'] ~>Service['redis']
}
vim manifests/slave.pp
class redis::slave($master_ip,$master_port='6379') inherits redis {
file{'/etc/redis.conf':
ensure => file,
content => template('redis/redis-slave.conf.erb'),
owner => 'redis',
group => 'root',
mode => 0640,
}
Package['redis'] -> File['/etc/redis.conf'] ~>Service['redis']
}
3、将模块移动到指定的位置
cp -r redis/ /etc/puppet/module/
查看模块有哪些
puppet module list
测试查看：-e指明调用的代码
puppet apply -v --noop -e "include redis"
puppet apply -v --noop -e "include redis::master"
puppet apply -v --noop -e "include redis::slave"由于slave中使用了参数，所以include调用会报错，应该使用下面的命令
puppet apply -v --noop -e "class{'redis::slave': master_ip => '172.16.13.134'}"
如果多个参数，那么逗号隔开即可。也可以编辑一个.pp文件来调用redis::slave类而不使用命令行测试
vim ~/manifests/redis3.pp
class{'redis::slave':
master_ip => '172.16.13.134',
}
执行：puppet apply -v redis3.pp
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