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案例1，通过puppet远程在centos3的/tmp目录下自动创建一个文件test.txt，并写入内容：Welconme
方法一：
1）centos2服务端配置：
[root@centos2 puppet-2.7.21]# vim /etc/puppet/manifests/site.pp
[root@centos2 puppet-2.7.21]# cat /etc/puppet/manifests/site.pp
node default{
file { "/tmp/test.txt":
content=> "this is a test file";
}
}
[root@centos2 puppet-2.7.21]# /etc/init.d/puppetmaster restart
2）测试客户端能否自动创建文件
方法1 通过重启puppet客户端服务，来执行脚本
[root@centos3 puppet-2.7.21]# /etc/init.d/puppet restart
[root@centos3 puppet-2.7.21]# cat /tmp/test.txt
this is a test file
方法2：
1）同步临时生效
[root@centos3 puppet-2.7.21]# puppetd --test --server centos2.cn
info: Caching catalog for centos3.cn
info: Applying configuration version '1429357828'
notice: Finished catalog run in 0.10 seconds
[root@centos3 puppet-2.7.21]# cat /tmp/test.txt
this is a test file
方法3：等30分钟后自己同步。
案例2： 文件分发。
要把server服务器上/opt目录下的a.txt（apache-4.1.12.rpm）发布至client服务器的/opt目录下，文件名不变。 注意：分发文件时，不要用/root ，会有权限问题。
1）centos2配置：
[root@centos2 ~]# cp /etc/hosts /opt/a.txt
[root@centos2 ~]# vim /etc/puppet/fileserver.conf #在文件最后，追加以下内容
[files]
path /opt/
allow 192.168.1.0/24
注： [files] #名字，可以随便写
2）指定客户端要执行的操作：
[root@centos2 ~]# vim /etc/puppet/manifests/site.pp
[root@centos2 ~]# cat /etc/puppet/manifests/site.pp #添加红色内容
node default{
file { "/tmp/test.txt":
content=> "this is a test file";
}
file { "/opt/a.txt":
source => "puppet://$puppetserver/files/a.txt",
#//centos2.cn//opt/a.txt
}
}
注：
file { "/opt/a.txt": #指分发到客户端的路径
source => "puppet://$puppetserver/files/a.txt", 中的files要和/etc/puppet/fileserver.conf中定义的名字一样。
注：修改site.pp 文件后，服务端不需要重新启动服务。
3）同步临时生效
[root@centos3 puppet-2.7.21]# puppetd --test --server centos2.cn
info: Caching catalog for centos3.cn
info: Applying configuration version '1418651351'
notice: /Stage[main]//Node[default]/File[/opt/a.txt]/ensure: defined content as '{md5}e7d6d91a44650a85573b0cd47f2c1647'
notice: Finished catalog run in 0.46 seconds
[root@centos3 puppet-2.7.21]# ls /opt/ #查看
a.txt
[root@centos3 puppet-2.7.21]# cat /opt/a.txt
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.63 centos2.cn
192.168.1.64 centos3.cn
案例3： 自动修改文件属性
1）centos2编写脚本配置
[root@centos3 ~]# ll /opt/a.txt
-rw-r--r-- 1 root root 210 10月 22 16:31 /opt/a.txt
[root@centos2 ~]# cat /etc/puppet/manifests/site.pp
node default{
file { "/tmp/test":
content=> "this is a test file";
}
file { "/opt/a.txt":
source => "puppet://$puppetserver/files/a.txt",
owner => "puppet",
group => "puppet",
mode => 777,
}
}
注：需要将上一个实验的代码删掉
2）同步临时生效测试：
[root@centos3 puppet-2.7.21]# puppetd --test --server centos2.cn
info: Caching catalog for centos3.cn
info: Applying configuration version '1418651544'
notice: /Stage[main]//Node[default]/File[/opt/a.txt]/owner: owner changed 'root' to 'puppet'
notice: /Stage[main]//Node[default]/File[/opt/a.txt]/group: group changed 'root' to 'puppet'
notice: /Stage[main]//Node[default]/File[/opt/a.txt]/mode: mode changed '0644' to '0777'
notice: Finished catalog run in 0.30 seconds
[root@centos3 puppet-2.7.21]# ll /opt/a.txt
-rwxrwxrwx 1 puppet puppet 213 Dec 15 21:49 /opt/a.txt
案例4： server端让client端自动执行shell脚本或命令
通过puppet分发执行shell脚本，然后在客户端的/opt目录下执行test.sh脚本，该脚本执行后，会在/tmp目录创建一个testfile文件。
1）编辑测试脚本
[root@centos2 ~]# vim /opt/test.sh
#!/bin/bash
/bin/touch /tmp/testfile
2）编辑脚本
[root@centos2 opt]#vim /etc/puppet/manifests/site.pp #写入以下红色标记内容
node default{
file { "/tmp/test":
content=> "this is a test file";
}
file { "/opt/a.txt":
source => "puppet://$puppetserver/files/a.txt",
owner => "puppet",
group => "puppet",
mode => 777,
}
file { "/opt/test.sh":
source => "puppet://$puppetserver/files/test.sh",
owner => "puppet",
group => "puppet",
mode => 755,
}
exec { "exec-mkdir":
cwd => "/opt",
command => "sh /opt/test.sh",
user => "puppet",
path => "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin",
}
}
注： 不用重启服务器的
3）同步测试：
[root@centos3 puppet-2.7.21]#puppetd --test --server centos2.cn
info: Caching catalog for centos3.cn
info: Applying configuration version '1418651975'
notice: /Stage[main]//Node[default]/File[/opt/test.sh]/ensure: defined content as '{md5}d68e2194d349dcc3f1990a0ce37dcf1a'
notice: /Stage[main]//Node[default]/Exec[exec-mkdir]/returns: executed successfully
notice: Finished catalog run in 1.85 seconds
[root@centos3 puppet-2.7.21]# ls /tmp/testfile
/tmp/testfile
[root@centos3 puppet-2.7.21]# ll /opt/
total 8
-rwxrwxrwx 1 puppet puppet 213 Dec 15 21:49 a.txt
-rwxr-xr-x 1 puppet puppet 37 Dec 15 21:59 test.sh
案例5：客户端自动执行服务的启动及关闭：
可以通过puppet对一些服务进行重启，状态等操作。puppet是通过service命令操作的。所以，只能针对在/etc/init.d/目录下的服务 实例：把客户端centos3的vsftpd服务关闭，并把nfs服务启动
1）准备环境：
[root@centos3 ~]# rpm -ivh /mnt/Packages/vsftpd-2.2.2-6.el6_0.1.x86_64.rpm
[root@centos3 ~]# service vsftpd start #为了实现远程关闭服务，所以这里先开着
[root@centos3 ~]#service nfs stop
[root@centos3 ~]# service vsftpd status
[root@centos3 ~]#service nfs status
2）配图manifests菜单，配置客户端如何执行：
[root@centos2 opt]# cat /etc/puppet/manifests/site.pp #添加红色标记内容
node default{
file { "/tmp/test":
content=> "this is a test file";
}
file { "/opt/a.txt":
source => "puppet://$puppetserver/files/a.txt",
owner => "puppet",
group => "puppet",
mode => 777,
}
file { "/opt/test.sh":
source => "puppet://$puppetserver/files/test.sh",
owner => "puppet",
group => "puppet",
mode => 755,
}
exec { "exec-mkdir":
cwd => "/opt",
command => "sh /opt/test.sh",
user => "puppet",
path => "/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin",
}
service { vsftpd":
ensure => stopped;
"nfs":
ensure => running;
}
}
3）centos3 测试：
[root@centos3 ~]#puppetd --test --server centos2.cn
[root@centos3 ~]# service vsftpd status
vsftpd is stopped
[root@centos3 ~]# service nfs status
rpc.svcgssd is stopped
rpc.mountd (pid 8896) is running...
nfsd (pid 8893 8892 8891 8890 8889 8888 8887 8886) is running...
rpc.rquotad (pid 8880) is running...
案例6：修改同步时间
修改puppet 客户端默认连接puppetmaster的时间 默认puppet 客户端每隔30分钟连接到puppetmaster， 同步一次配置文件 现在修改为1分钟.同步一次。
1）修改配置文件
[root@centos3 ~]# cat /etc/puppet/puppet.conf #添加以下红色标记内容
[main]
# The Puppet log directory.
# The default value is '$vardir/log'.
logdir = /var/log/puppet
# Where Puppet PID files are kept.
# The default value is '$vardir/run'.
rundir = /var/run/puppet
# Where SSL certificates are kept.
# The default value is '$confdir/ssl'.
ssldir = $vardir/ssl
[agent]
# The file in which puppetd stores a list of the classes
# associated with the retrieved configuratiion. Can be loaded in
# the separate ``puppet`` executable using the ``--loadclasses``
# option.
# The default value is '$confdir/classes.txt'.
classfile = $vardir/classes.txt
server = centos2.cn
certname = centos3.cn
runinterval = 60 #同步时间间隔默认为妙
# Where puppetd caches the local configuration. An
[root@centos3 ~]# /etc/init.d/puppet restart
[root@centos3 ~]# rm -rf /opt/*
[root@centos3 ~]# ls /opt/
2）测试：等待1分钟后再查看。
[root@centos3 ~]# ls /opt/ #发现执行了site.pp中内容
a.txt test.sh
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