在CentOS 6.4上安裝Puppet配置管理工具

本文轉自cactifans

文章地址：http://www.cactifans.org/index.php/2013/05/%E5%9C%A8centos-6-4%E4%B8%8A%E5%AE%89%E8%A3%85puppet%E9%85%8D%E7%BD%AE%E7%AE%A1%E7%90%86%E5%B7%A5%E5%85%B7/ 

上篇說了下在ubuntu12.04上安裝puppet，安裝的版本爲puppet2.7.11版本，今天嘗試了下在CentOS6.4系統上安裝puppet 3.1.1版本,本文參考chenshake的文章

OS:centso 6.4 X64
Puppet 3.1.1
Puppet master: master.canghai.com
Puppet clients:node1-5.canghai.com

Puppet 要求全部機器有完整的域名（FQDN），若是沒有 DNS 服務器提供域名的話，能夠在兩臺機器上設置主機名（注意要先設置主機名再安裝 Puppet，由於安裝 Puppet 時會把主機名寫入證書，客戶端和服務端通訊須要這個證書）,由於我配置了DNS，因此就不用改hosts了，若是沒有就須要改hosts文件指定。
1.關閉selinux，iptables，並設置ntp
採用CentOS-6.4-x86_64-minimal.iso最小化安裝，所以先要安裝ntp、wget等經常使用工具
安裝ntp wget

yum install wget ntp -y

關閉selinux

sed -i '/SELINUX/ s/enforcing/disabled/g' /etc/selinux/config
setenforce 0

中止iptables

chkconfig ip6tables off
chkconfig iptables off
/etc/init.d/ip6tables stop
/etc/init.d/iptables stop

設置ntp

ntpdate pool.ntp.org
chkconfig ntp on
service ntpd start

2.安裝puppet服務
puppet不在CentOS的基本源中，須要加入 PuppetLabs 提供的官方源：

wget http://yum.puppetlabs.com/el/6/products/x86_64/puppetlabs-release-6-7.noarch.rpm
rpm -ivh puppetlabs-release-6-7.noarch.rpm
yum update

在 master上安裝和啓用 puppet 服務：

yum install puppet-server
chkconfig puppet on
service puppetmaster start

在clients上安裝puppet客戶端

yum install puppet
chkconfig puppet on
service puppet start

3.配置puppet
對於puppet 客戶端，修改/etc/puppet/puppet.conf，指定master服務器

vi /etc/puppet/puppet.conf

[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

# Where puppetd caches the local configuration. An
# extension indicating the cache format is added automatically.
# The default value is '$confdir/localconfig'.
localconfig = $vardir/localconfig
server = master.canghai.com

並重啓puppet服務

service puppet restart

4.Client申請證書
服務端自動簽發證書設置
設置master自動簽發全部的證書，咱們只須要在/etc/puppet 目錄下建立 autosign.conf 文件。（不須要修改 /etc/puppet/puppet.conf文件，由於我默認的autosign.conf 文件的位置沒有修改）

cat > /etc/puppet/autosign.conf <<EOF
*.canghai.com
EOF
service puppetmaster restart

這樣就會對全部來自canghai.com的機器的請求，都自動簽名。
client須要向服務器端發出請求, 讓服務器對客戶端進行管理. 這實際上是一個證書籤發的過程. 第一次運行 puppet 客戶端的時候會生成一個 SSL 證書並指定發給 Puppet 服務端, 服務器端若是贊成管理客戶端,就會對這個證書進行簽發，能夠用這個命令來簽發證書，因爲咱們已經在客戶端設置了server地址，所以不須要跟服務端地址

puppet agent

爲了詳細瞭解註冊的過程和往後排錯,能夠增長參數，由於配置文件裏
–no-daemonize 前臺輸出日誌
–verbose 輸入更加詳細的日誌
–debug 更加詳細的日誌，排錯的時候使用
–test 表示測試，就帶一個–test參數就能夠

puppet agent --no-daemonize --onetime --verbose --debug

就能夠申請證書了，因爲我配置的自動簽發證書，因此直接就簽發了，在服務端執行

puppet cert list --all
+ "master.canghai.com" (SHA256) CA:50:6A:51:D5:AD:F0:73:BF:83:A0:4A:BF:1F:4E:F0:56:C9:4B:D8:4D:BB:62:10:EE:14:16:D5:96:D0:B6:F7 (alt names: "DNS:master.canghai.com", "DNS:puppet", "DNS:puppet.canghai.com")
+ "node1.canghai.com" (SHA256) B8:95:69:2B:7B:3E:F4:38:CA:63:BE:A0:ED:3C:E7:05:1F:93:53:2D:1C:60:67:E9:D8:20:99:90:B8:9B:D6:40
+ "node2.canghai.com" (SHA256) 6C:65:34:9D:B1:82:35:24:EF:3F:10:2B:10:F0:0B:44:42:AB:84:42:29:B5:73:1A:A0:1D:D5:1E:9E:24:BC:E3
+ "node3.canghai.com" (SHA256) 57:54:33:37:23:A7:CD:BE:F6:25:BD:6F:E3:DA:F9:57:48:50:C7:5E:36:8F:F4:BA:C8:27:DF:B0:A2:84:5F:AF
+ "node4.canghai.com" (SHA256) 65:2F:0E:E7:98:F5:05:40:31:2F:FF:36:A5:3E:DE:C1:91:E8:45:16:55:60:A1:82:74:BC:84:EC:BA:C0:62:F0
+ "node5.canghai.com" (SHA256) 8C:1B:31:B6:C0:9C:A5:AF:89:6C:85:1B:BA:D0:03:63:07:4C:B1:89:D4:E6:B7:4E:CA:4A:23:C7:3C:5F:CA:3D

就能夠看到全部客戶端已經都已簽發證書，前面帶"+"號的就是簽發成功的，擼過沒有簽名的，能夠用

puppet cert --sign node1.canghai.com

進行簽發證書,簽發後在master，執行

puppet cert list --all

便可看到證書已經簽發
5.在服務端安裝puppet的dashboard
安裝mysql

yum install -y mysql mysql-devel mysql-server

優化mysql設置
編輯 /etc/my.cnf, 在[mysqld]字段,增長最後一行

cat /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
max_allowed_packet = 32M
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

啓動服務

/etc/init.d/mysqld start
chkconfig mysqld on

設置mysql密碼，我這裏使用是密碼是123456

mysqladmin -u root password '123456'

建立一個dashboard數據庫

mysql -uroot -p123456 <<EOF
CREATE DATABASE dashboard CHARACTER SET utf8;
CREATE USER 'dashboard'@'localhost' IDENTIFIED BY '123456';
GRANT ALL PRIVILEGES ON dashboard.* TO 'dashboard'@'localhost';
FLUSH PRIVILEGES;
EOF

Passenger+Apache+Dashboard
這是讓Apache支持ruby,因爲Passenger不在centos官方源裏，所以要添加epel的源

wget http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -ivh epel-release-6-8.noarch.rpm
yum install mod_passenger puppet-dashboard

配置Dashboard

vi /usr/share/puppet-dashboard/config/database.yml
production:
  database: dashboard
  username: dashboard
  password: 123456
  encoding: utf8
  adapter: mysql

修改時區

vi /usr/share/puppet-dashboard/config/environment.rb

  #config.time_zone = 'UTC'
  config.time_zone = 'Beijing'

初始化數據庫

cd /usr/share/puppet-dashboard/
rake RAILS_ENV=production db:migrate

配置Apache
咱們須要整合Passenger和apache

cat > /etc/httpd/conf.d/passenger.conf << EOF
LoadModule passenger_module modules/mod_passenger.so

PassengerRoot /usr/share/rubygems/gems/passenger-3.0.17
PassengerRuby /usr/bin/ruby
PassengerHighPerformance on
PassengerMaxPoolSize 12
PassengerPoolIdleTime 1500
PassengerStatThrottleRate 120
RailsAutoDetect On

ServerName master.canghai.com
DocumentRoot "/usr/share/puppet-dashboard/public/"
&lt;Directory "/usr/share/puppet-dashboard/public/"&gt;
Options None
AllowOverride AuthConfig
Order allow,deny
allow from all

ErrorLog /var/log/httpd/master.canghai.com_error.log
LogLevel warn
CustomLog /var/log/httpd/master.canghai.com_access.log combined
ServerSignature On

EOF

啓動服務

/etc/init.d/httpd start
chkconfig httpd on

配置puppet
讓Dashboard使用Reports，如今默認agent是已經啓用Report的功能，因此你就不須要設置agent,你只須要設置Server端就能夠

vi /etc/puppet/puppet.conf
[master]
reports = store, http
reporturl = http://master.canghai.com:80/reports/upload

重啓puppetmaster 服務

/etc/init.d/puppetmaster restart

這時候就能夠直接用 http://ip 訪問puppet Dashboard

導入報告

cd /usr/share/puppet-dashboard
rake RAILS_ENV=production reports:import

這時候你訪問Dashboard,能夠看到導入的任務.

4. 執行導入的reports

cd /usr/share/puppet-dashboard
rake jobs:work RAILS_ENV="production"