Puppet基础篇3-安装Puppet前期的准备工作

工欲善其事必先利其器

在安装Puppet之前是需要做很多预备工作的,比如网络地址规范、主机名、certname名、时间等等,也只有这些准备好了,才不至于在安装好puppet之后发现问题而后悔莫及。
说明:接下来的整套文档体系都是以本篇文档规范方案进行设计和扩充的,同样也是也是按照准生产的标准进行编写。

一、网络地址规范

【HOSTNAME】                        【IP】                     【certname】        【operatingsystem】 
puppetmaster.kisspuppet.com  192.168.100.110/24   puppetmaster_cert.kisspuppet.com     RHEL6.4
agent1.kisspuppet.com        192.168.100.111/24   agent1_cert.kisspuppet.com         RHEL5.7
agent2.kisspuppet.com        192.168.100.112/24   agent2_cert.kisspuppet.com         RHEL5.8
agent3.kisspuppet.com        192.168.100.123/24   agent3_cert.kisspuppet.com         RHEL6.4

注:192.168.100.*/24的网关为192.168.100.110 所有服务器的DNS1为192.168.100.110

1、设置主机名

[root@puppetmaster ~]# vim /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=puppetmaster.kisspuppet.com
[root@agent1 ~]# vim /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=agent1.kisspuppet.com

注:agent2~agent3同上

2、设置IP地址

可通过system-config-network命令进行配置好后在进入配置文件进行修改

[root@puppetmaster ~]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=none
IPADDR=192.168.100.110
NETMASK=255.255.255.0
GATEWAY=192.168.100.110
DNS1=192.168.100.110
IPV6INIT=no
USERCTL=no

注:node1~node3同上

3、关闭NetworkManager服务

NetworkManager服务是RHEL图形界面管理网卡的服务,由于其开启会对网络造成影响,RHEL6默认是开启的,建议关闭。

[root@puppetmaster ~]# /etc/init.d/NetworkManager stop
Stopping NetworkManager daemon:                            [  OK  ]
[root@puppetmaster ~]# chkconfig NetworkManager off

注:node1~node3同上

4、关闭防火墙

本实验主要是为了测试整个架构的功能,如果要测试防火墙,请另行解决。

[root@puppetmaster ~]# /etc/init.d/iptables stop
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Unloading modules:                               [  OK  ]
[root@puppetmaster ~]# chkconfig iptables off

注:node1~node3同上

5、关闭selinux

[root@puppetmaster ~]# sed -i 's/SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config 

注:node1~node3同上

6、设置key
为了操作方便,设置公钥私钥,可通过puppetmaster端统一部署

[root@puppetmaster ~]# ssh-keygen 
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.
The key fingerprint is:
ff:55:8d:31:34:b4:b3:6a:70:3b:aa:09:76:12:5b:8d root@puppetmaster.kisspuppet.com
The key's randomart image is:
+--[ RSA 2048]----+
|             .+  |
|             . o |
|              =  |
|         o     *.|
|      . E o . o o|
|       + . o o . |
|      = . . = .  |
|     . + . + o   |
|        o.. .    |
+-----------------+
[root@puppetmaster ~]# for i in {1..3}; do ssh-copy-id -i 192.168.100.11$i; done
The authenticity of host '192.168.100.111 (192.168.100.111)' can't be established.
RSA key fingerprint is ae:db:c5:0c:0e:3f:8c:62:ea:a1:26:e2:09:63:18:32.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '192.168.100.111' (RSA) to the list of known hosts.
root@192.168.100.111's password: 
Now try logging into the machine, with "ssh '192.168.100.111'", and check in:

  .ssh/authorized_keys

to make sure we haven't added extra keys that you weren't expecting.
...

7、设置hosts文件

puppet通信的前提是agent和master必须能够互相解析主机名。
当然,也可以设置DNS,在第四部分搭建kermit架构的时候会搭建DNS服务,现在先暂时通过hosts文件进行解析,可先设置好puppetmaster后,统一copy到所有节点上

[root@puppetmaster ~]# vim /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.100.110 puppetmaster.kisspuppet.com  puppetmaster
192.168.100.111 agent1.kisspuppet.com  agent1
192.168.100.112 agent2.kisspuppet.com  agent2
192.168.100.113 agent3.kisspuppet.com  agent3
[root@puppetmaster ~]# for i in {1..3}; do scp /etc/hosts 192.168.100.11$i:/etc/; done
hosts                                                                                  100%  354     0.4KB/s   00:00    
hosts                                                                                  100%  354     0.4KB/s   00:00    
hosts                                                                                  100%  354     0.4KB/s   00:00  

[root@agent1 ~]# ping puppetmaster.kisspuppet.com #设置完成之后记得测试下
PING puppetmaster.kisspuppet.com (192.168.100.110) 56(84) bytes of data.
64 bytes from puppetmaster.kisspuppet.com (192.168.100.110): icmp_seq=1 ttl=64 time=0.327 ms
64 bytes from puppetmaster.kisspuppet.com (192.168.100.110): icmp_seq=2 ttl=64 time=0.996 ms
64 bytes from puppetmaster.kisspuppet.com (192.168.100.110): icmp_seq=3 ttl=64 time=1.00 ms

--- puppetmaster.kisspuppet.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.327/0.774/1.000/0.317 ms

注意:设置完网络后,可以通过类似Xshell这样的工具进行登录,方便操作

二、配置本地光盘yum源

由于我这边是vmware虚拟机操作,所以光盘是可以直接挂载到某一个目录里面,如果是物理机,建议将光盘里的文件全部copy到指定的一个目录里面,然后beaeurl指向它既可。

[root@puppetmaster ~]# mkdir /media/cdrom
[root@puppetmaster ~]# mount /dev/cdrom  /media/cdrom/
mount: block device /dev/sr0 is write-protected, mounting read-only

[root@puppetmaster ~]# cp /etc/yum.repos.d/rhel-source.repo /etc/yum.repos.d/rhel-base.repo 
[root@puppetmaster ~]# vim /etc/yum.repos.d/rhel-base.repo 
[rhel-base]
name=Red Hat Enterprise Linux $releasever - $basearch - Source
baseurl=file:///media/cdrom
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release

[root@puppetmaster ~]# yum clean all
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Cleaning repos: rhel-base
Cleaning up Everything
[root@puppetmaster ~]# yum install tree lrzsz   #测试
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
rhel-base                                                                                         | 3.9 kB     00:00 ... 
rhel-base/primary_db                                                                              | 3.1 MB     00:01 ... 
Setting up Install Process
Resolving Dependencies
...

注:node1~node3同上

说明:RHEL5的report在Server目录,所以在配置repo文件的时候参数 baseurl=file:///media/cdrom/Server

三、设置NTP服务器

1、配置NTP服务器
设置ntp服务器和本地进行同步,当然如果联网也可以和外部服务器同步,这里只需要保证所有服务器时间一致。
原因是因为,puppetmaster和agent之间时间相差不得超过10分钟(好像是),而后期配置的mcollecitve服务端和客户端之间不能相差60秒

[root@puppetmaster ~]# rpm -qa | grep ntp
fontpackages-filesystem-1.41-1.1.el6.noarch
ntpdate-4.2.4p8-3.el6.x86_64  #默认已经安装
ntp-4.2.4p8-3.el6.x86_64 #默认已经安装
[root@puppetmaster ~]# cp /etc/ntp.conf{,.bak}

[root@puppetmaster ~]# vim /etc/ntp.conf
driftfile /var/lib/ntp/drift
logfile /var/log/ntp.log
Broadcastdelay 0.008
restrict default kod nomodify notrap nopeer noquery
restrict -6 default kod nomodify notrap nopeer noquery
restrict default ignore
restrict 127.0.0.1
restrict -6 ::1
restrict 192.168.100.0  mask 255.255.255.0 notrap nomodify
server  127.127.1.0     # local clock
fudge   127.127.1.0 stratum 10   refid NIST
includefile /etc/ntp/crypto/pw
keys /etc/ntp/keys

[root@puppetmaster ~]# /etc/init.d/ntpd start
Starting ntpd:                                             [  OK  ]
[root@puppetmaster ~]# chkconfig ntpd on

2、节点测试并设置crontab

[root@agent1 ~]# ntpdate puppetmaster.kisspuppet.com
 7 Mar 06:08:30 ntpdate[16411]: adjust time server 192.168.100.110 offset 0.049448 sec

[root@agent1 ~]# crontab -l #可通过croutab -e命令设置
*/30 * * * * /usr/sbin/ntpdate puppetmaster.kisspuppet.com >>/root/ntdate.log 2>&1 && /sbin/clock --systohc
[root@agent1 ~]# /etc/init.d/crond reload
Reloading cron daemon configuration:                       [  OK  ]

四、制作本地yum仓库

本实验大部分包来自于http://yum.puppetlabs.com,部分包来自于EPEL和Gems官网,rabbitmq官方等,关于如何制作yum仓库,之前有文章写道http://kisspuppet.com/2014/01/26/puppet_create_repo/,这里在简单操作一下

[root@puppetmaster RHEL6U4]# yum install createrepo #安装制作软件包的软件
[root@puppetmaster RHEL6U4]# createrepo . #将本目录以及子目录下所有rpm包生产repodata
Spawning worker 0 with 105 pkgs
Workers Finished
Gathering worker results

Saving Primary metadata
Saving file lists metadata
Saving other metadata
Generating sqlite DBs
Sqlite DBs complete

注:RHEL5的repodata必须在RHEL5环境下运行createrpo命令生成

五、配置FTP服务器

1、安装并配置FTP服务器

搭建FTP服务器的目的只要是为自定义yum仓库做准备

[root@puppetmaster ~]# yum install vsftpd
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
rhel-base                                                                                         | 3.9 kB     00:00 ... 
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package vsftpd.x86_64 0:2.2.2-11.el6 will be installed
--> Finished Dependency Resolution
...

[root@puppetmaster ~]# cp /etc/vsftpd/vsftpd.conf{,.bak}
[root@puppetmaster ~]# vim /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
local_enable=YES
write_enable=YES
local_umask=022
anon_upload_enable=YES
anon_root=/puppet   #匿名访问的目录
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
xferlog_file=/var/log/xferlog
xferlog_std_format=YES
listen=YES

pam_service_name=vsftpd
userlist_enable=YES
tcp_wrappers=YES

[root@puppetmaster ~]# /etc/init.d/vsftpd start
Starting vsftpd for vsftpd:                                [  OK  ]
[root@puppetmaster ~]# chkconfig vsftpd on

2、在FTP共享目录里制作yum仓库

将生成好的yum源copy到FTP共享目录中

[root@puppetmaster ~]# ll /puppet/
total 12
drwxr-xr-x 4 root root 4096 Mar  7 06:21 RHEL5U7
drwxr-xr-x 4 root root 4096 Mar  7 06:21 RHEL5U8
drwxr-xr-x 6 root root 4096 Mar  7 06:21 RHEL6U4

[root@puppetmaster ~]# ll /puppet/RHEL6U4/
total 16600
-rw-r--r-- 1 root root   87643 Mar  7 06:21 facter-1.7.3-1.el5.x86_64.rpm
-rw-r--r-- 1 root root   87440 Mar  7 06:21 facter-1.7.3-1.el6.x86_64.rpm
drwxr-xr-x 2 root root    4096 Mar  7 06:21 gem
-rw-r--r-- 1 root root  634944 Mar  7 06:21 GeoIP-1.4.8-1.el6.x86_64.rpm
-rw-r--r-- 1 root root  151654 Mar  7 06:21 keepalived-1.2.7-1.1.x86_64.rpm
-rw-r--r-- 1 root root   10924 Mar  7 06:21 mcollective-2.2.4-1.el6.noarch.rpm
-rw-r--r-- 1 root root   24596 Mar  7 06:21 mcollective-client-2.2.4-1.el6.noarch.rpm
-rw-r--r-- 1 root root  759300 Mar  7 06:21 mcollective-common-2.2.4-1.el6.noarch.rpm
drwxr-xr-x 3 root root    4096 Mar  7 06:21 mcollective-plugins
drwxr-xr-x 2 root root    4096 Mar  7 06:21 mq
-rw-r--r-- 1 root root  406588 Mar  7 06:21 nginx-1.0.15-5.el6.x86_64.rpm
-rw-r--r-- 1 root root 1128352 Mar  7 06:21 puppet-2.7.23-1.el6.noarch.rpm
-rw-r--r-- 1 root root 4509032 Mar  7 06:21 puppet-dashboard-1.2.23-1.el6.noarch.rpm
-rw-r--r-- 1 root root   25596 Mar  7 06:21 puppet-server-2.7.23-1.el6.noarch.rpm
-rw-r--r-- 1 root root 3729988 Mar  7 06:21 rabbitmq-server-3.1.5-1.el6.noarch.rpm
drwxr-xr-x 2 root root    4096 Mar  7 06:21 repodata
...

六、配置远程yum仓库

[root@puppetmaster ~]# vim /etc/yum.repos.d/rhel-puppet.repo
[rhel-puppet]
name=puppetlabs epel gems for rhel
baseurl=ftp://puppetmaster.kisspuppet.com/RHEL6U4 #指向FTP服务器地址
enabled=1
gpgcheck=0

[root@puppetmaster ~]# yum list | grep puppet-server #测试
puppet-server.noarch                   2.7.25-1.el6                  rhel-puppet

注:node1~node3同上

七、重要软件版本选型

目前puppet最成熟的版本为2.7.和3.3版本,两个版本都可以,本实验采用2.7版本。

puppet-server 2.7.25-1 来自puppetlabs
puppet 2.7.25-1 来自puppetlabs
facter 1.7.5 来自puppetlabs
puppet-dashboar 1.2.23 来自puppetlabs
ruby 1.8.* 系统自带
mcollective 2.2.4 来自puppetlabs
activemq 5.5.0 来自puppetlabs
rabbitmq-server 3.1.5 来自rabbitmq官网
kermit-webui 1.2-1 来自kermit官网
...

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