2.1 Puppet 主机配置
设置主机名
首先，在Puppet主机中，使用vim编辑器编辑主机文件，设置IP地址和主机名。你可以使用任何其他编辑器，如vi、gedit等。
执行以下命令(主机)：
# vim /etc/hosts
文件末尾，添加一行：
192.168.31.154 puppet puppet.qikegu.com
输入主机的ip地址，并给它一个域名。可以看到，在上面添加的这行中，192.168.31.154是Puppet主机IP地址，puppet puppet.qikegu.com是分配给Puppet主机的域名。
要查看电脑的IP地址，可使用以下命令:
# ifconfig
输出：
br-0b42f697dcd8: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.22.0.1 netmask 255.255.0.0 broadcast 172.22.255.255
ether 02:42:fa:7d:7f:29 txqueuelen 0 (Ethernet)
RX packets 27539 bytes 27425773 (26.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12476 bytes 1157370 (1.1 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp0s3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.31.154 netmask 255.255.255.0 broadcast 192.168.31.255
inet6 fe80::6ace:9b1d:c11b:1f77 prefixlen 64 scopeid 0x20<link>
ether 08:00:27:4c:65:36 txqueuelen 1000 (Ethernet)
RX packets 27539 bytes 27425773 (26.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 12476 bytes 1157370 (1.1 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Puppet 主机配置文件
接下来，修改Puppet配置文件。
# vim /etc/puppet/puppet.conf
文件中的[main]栏中添加：
dns_alt_names = puppet,puppet.qikegu.com # dns配置
certname=puppet # 认证名称配置
文件完整内容如下所示：
[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 = $vardir/ssl
#####################
# 新增下面2行
dns_alt_names = puppet,puppet.qikegu.com # dns配置
certname=puppet # 认证名称配置
#####################
[agent]
# The file in which puppetd stores a list of the classes
# associated with the retrieved configuratiion. Can be loaded in
# the separate ``puppet`` executable using the ``--loadclasses``
# option.
# The default value is '$confdir/classes.txt'.
classfile = $vardir/classes.txt
# Where puppetd caches the local configuration. An
# extension indicating the cache format is added automatically.
# The default value is '$confdir/localconfig'.
localconfig = $vardir/localconfig
在这里的[main]部分，配置puppet主机名称。DNS可以让节点使用友好名称而不是IP地址进行通信。另外还需设置认证名称。
2.2 Puppet 从机配置
设置host名称
类似的，在Puppet从机中，使用vim编辑器编辑/etc/hosts文件。
执行以下命令(从机)：
# vim /etc/hosts
文件末尾，添加2行：
192.168.31.100 puppetagent # 设置从机IP与名称
192.168.31.154 puppet puppet.qikegu.com #设置主机IP与名称
Puppet 从机配置文件
接下来，修改Puppet配置文件。
# vim /etc/puppet/puppet.conf
文件中的[agent]部分添加：
server = puppet.qikegu.com # 设置这个puppet从机的puppet主机
文件完整内容如下所示：
[main]
# The Puppet log directory.
# The default value is '$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 = $vardir/ssl
[agent]
#######################################
# 新增下面1行
server = puppet.qikegu.com # 设置这个puppet从机的puppet主机域名
#######################################
# The file in which puppetd stores a list of the classes
# associated with the retrieved configuratiion. Can be loaded in
# the separate ``puppet`` executable using the ``--loadclasses``
# option.
# The default value is '$confdir/classes.txt'.
classfile = $vardir/classes.txt
# Where puppetd caches the local configuration. An
# extension indicating the cache format is added automatically.
# The default value is '$confdir/localconfig'.
localconfig = $vardir/localconfig
在这里的[agent]部分，为puppet代理设置puppet服务器名。这是非常关键的一步，puppet将从主机文件中查找puppet服务器域名，并连接到该服务器对应的IP地址。确保你输入了正确的服务器域名。