CentOS 6.3下Puppet安装配置笔记

最近抽空研究了下据说是圈里运维利器的国外开源软件puppet,原本是想搞一个最新版本编译的整合文档，最后在调试过程中各种报错，google下老外的文章，说是最新版本间存在很多不兼容的情况，后来果断放弃，找到了一个能兼容的版本，并测试成功，前后折腾了2天，真够坑的，现在把自己的心得整合成文档，供大家分享。

系统环境：CentOS6.3

puppet:  puppet-2.7.13

facter:  facter-1.6.5

ruby:    yum源

注：

facter用来获取客户端系统信息(如hostname,ip,OS-Version,fqdn等)

ruby是puppet的开发环境

puppet server: 192.168.7.196

puppet client: 192.168.7.197

(server)为仅服务器端配置

(client)为仅客户器端配置

(server,client)为服务器端与客户端配置 

一.配置环境(server,client)： 

1.关闭iptables和selinux(server,client)

# service iptables stop

# setenforce 0

# vi /etc/sysconfig/selinux

—————

SELINUX=disabled

————— 

2.安装ruby开发环境（centos6.3默认更新源）(server,client)

# yum -y install ruby* 

3.计划同步时间：(server,client)

每5分钟同步一次时间

# crontab -e

————-

*/5 * * * * /usr/sbin/ntpdate -u asia.pool.ntp.org

————-

# service crond restart

# chkconfig crond on 

4.修改服务器及客户端HOST及主机名：

(server,client)

# vi /etc/hosts

——————-

192.168.7.196    server.example.com    server

192.168.7.197    client.example.com    client

——————- 

(server)

# vi /etc/sysconfig/network

—————-

HOSTNAME=server.example.com

—————- 

(client)

# vi /etc/sysconfig/network

—————-

HOSTNAME=client.example.com

—————-

二.安装应用软件(server,client)：

(server)：

1.安装facter:

# wget http://downloads.puppetlabs.com/facter/facter-1.6.5.tar.gz

# tar zxvf facter-1.6.5.tar.gz

# cd facter-1.6.5

# ruby install.rb

2.安装puppet:

# wget http://downloads.puppetlabs.com/puppet/puppet-2.6.13.tar.gz

# tar zxvf puppet-2.6.13.tar.gz

# cd puppet-2.6.13

# ruby install.rb

# cp conf/auth.conf /etc/puppet/

# cp conf/RedHat/fileserver.conf /etc/puppet/

# cp conf/redhat/puppet.conf /etc/puppet/

# mkdir -p /etc/puppet/manifests

设置开机启动脚本：

# cp conf/redhat/server.init /etc/init.d/puppetmaster

# chmod +x /etc/init.d/puppetmaster

# chkconfig –add puppetmaster

# chkconfig puppetmaster on

生成pupput用户:

# puppetmasterd –mkusers

启动puppetmaster服务（端口：8140）:

# service puppetmaster start

(client):

1.安装facter:

# wget http://downloads.puppetlabs.com/facter/facter-1.6.5.tar.gz

# tar zxvf facter-1.6.5.tar.gz

# cd facter-1.6.5

# ruby install.rb

2.安装puppet:

# wget http://downloads.puppetlabs.com/puppet/puppet-2.6.13.tar.gz

# tar zxvf puppet-2.6.13.tar.gz

# cd puppet-2.6.13

# ruby install.rb

# cp conf/auth.conf /etc/puppet/

# cp conf/namespaceauth.conf /etc/puppet/

# cp conf/redhat/puppet.conf /etc/puppet/

设置开机启动脚本：

# cp conf/redhat/client.init /etc/init.d/puppet

# chmod +x /etc/init.d/puppet

# chkconfig –add puppet

# chkconfig puppet on

# vi /etc/puppet/puppet.conf

在[agent]条目下添加以下内容：

——-

Listen = true

Server = server.example.com

——–

# vi /etc/puppet/namespaceauth.conf

修改成以下内容：

———

[fileserver]

allow *

[puppetmaster]

allow *

[puppetrunner]

allow *

[puppetbucket]

allow *

[puppetreports]

allow *

[resource]

allow *

———

生成pupput用户:

# puppetmasterd –mkusers

启动puppet服务（端口：8140）:

# /etc/init.d/puppet start

至此安装完毕，现在需要配置客户端与服务器端的认证连接，从而将服务器端的配置的内容分发到各个客户端，实现集中配置管理。

三.认证并分发：

(client):

客户端发送请求

# puppetd –test –server server.example.com

报错：

——————–

err: Could not retrieve catalog from remote server: SSL_connect returned=1 errno=0

state=SSLv3 read server certificate B: certificate verify failed

warning: Not using cache on failed catalog

err: Could not retrieve catalog; skipping run

——————–

解决方法：

这可能是换了不同的两台puppetmaster服务器引起的。解决方法，删除现有ssl证书。

# find /var/lib/puppet -type f -print0 |xargs -0r rm

重新发送请求：

# puppetd –test –server server.example.com

——————-

info: Creating a new SSL key for client.example.com

warning: peer certificate won’t be verified in this SSL session

info: Caching certificate for ca

warning: peer certificate won’t be verified in this SSL session

warning: peer certificate won’t be verified in this SSL session

info: Creating a new SSL certificate request for client.example.com

info: Certificate Request fingerprint (md5):

32:E8:CD:32:BF:62:86:64:B3:98:A4:EB:8A:71:D2:99

warning: peer certificate won’t be verified in this SSL session

warning: peer certificate won’t be verified in this SSL session

warning: peer certificate won’t be verified in this SSL session

Exiting; no certificate found and waitforcert is disabled

——————-

发送成功。

(server)：

服务器端查看是否有请求证书的客户端服务器

# puppetca –list

——————

client.example.com (32:E8:CD:32:BF:62:86:64:B3:98:A4:EB:8A:71:D2:99)

——————

收到客户端认证信息

服务器端对client.example.com签名

# puppetca -s client.example.com

或对所有客户端全部签名

# puppetca -s -a

查看验证签名,注意前面的+号，说明已经签名

# puppetca -a –list

———————

+ client.example.com (19:6F:4C:84:B1:69:16:3C:A1:38:C2:2E:6F:B6:67:12)

———————

md5验证服务器端收到的证书是否正确

(server)：

# md5sum /var/lib/puppet/ssl/ca/signed/client.example.com.pem

———————

1ebfd47775ec8f3e2ae112d75ccba132 /var/lib/puppet/ssl/ca/signed/client.example.com.pem

———————

(client)：

# md5sum /var/lib/puppet/ssl/certs/client.example.com.pem

———————

1ebfd47775ec8f3e2ae112d75ccba132  /var/lib/puppet/ssl/certs/client.example.com.pem

———————

MD5值相同，说明我们的puppetmaster和客户端的puppet已经成功建立通信

注：出现修改主机名问题引起无法认证，需要重新申请证书，操作可以按照如下两个步骤：

(server)：

# rm -rf /var/lib/puppet/ssl/ca/signed/*.pem  // “*.pem”为修改过主机名的证书

(client)：

# rm -rf /var/lib/puppet/ssl/

配置完毕，开始验证分发效果：

(server)：

修改server端配置文件：

# vi /etc/puppet/manifests/site.pp

—————–

node default{

  file { “/tmp/test”:

          content=> “this is a test file”;

}

}

—————–

重启puppetmaster，更新配置文件信息。

# service puppetmaster restart

(client):

重启puppet（可不用重启）

# service puppet restart

同步文件：

# puppetd –server server.example.com  –test

——————

warning: peer certificate won’t be verified in this SSL session

info: Caching certificate for client.example.com

info: Caching certificate_revocation_list for ca

info: Caching catalog for client.example.com

info: Applying configuration version ‘1369124449’

notice: /Stage[main]//Node[default]/File[/tmp/test]/ensure: defined content as ‘{md5}100b144907af2a4786003758a0a6a563’

info: Creating state file /var/lib/puppet/state/state.yaml

notice: Finished catalog run in 0.02 seconds

——————

查看/tmp/test文件及文件内容

# cat /tmp/test

———–

this is a test file

———–

———–大功告成————-

puppet的具体功能模块这里就不做过多阐述

相应文档详见传送门：http://www.linuxidc.com/Linux/2013-05/84739.htm

更多CentOS相关信息见CentOS 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=14