Automated Management of Linux Clusters with Puppet 运维之家

Puppet: system configuration and manage tool

and , computer manage and configuration data manage . for IaaS, Paas, Saas , , computer . for data , how to manage , configuration these Scale computer node , for data as well as all to .

Puppet is a system configuration manage tool , has as well as ; simultaneously , Puppet provide has system configuration as well as , very manage and Scalesystem .

Puppet system

Puppet use C/S , Puppet Server and Puppet Node.

1. Puppet

Puppet Server

Puppet Server is configuration and manage , manage all node . system manage in Puppet Server Puppet has configuration node configuration file (manifest), configuration file node status —— . these can is file , service , . node Puppet Server, configuration file , and in these configuration file , and status to configuration file to .

Puppet Node(Agent)

Puppet Master manage computer node Puppet node. Puppet node Puppet Master, configuration file , and in . in configuration file , Puppet node provide Puppet Master, and . system manage can in Puppet Node command , let Puppet Node Puppet Server configuration file , and in .

Puppet

Puppet can : , , , .

2. Puppet

(Define)

manage node configuration file , configuration file node need as well as . these can is file , service , , can command . Puppet configuration manage for these provide , configuration file .

(Simulate)

according to node configuration file , we can to node need and status . configuration file node status , not is configuration . Puppet will configuration file Manifest configuration file Catalog. via Catalog, Puppet according to node status , node to status need .

(Enforce)

node Puppet Server configuration file . Puppet will node status and node configuration file status , according to to need , for node operation , to configuration file status .

(Report)

, node all Puppet Server , node status , and .

Puppet configuration Introduction

Puppet configuration manage is , can is a , a file , service . a node status can as well as . manage not need configuration and system , Puppet need manage system status , as well as . Puppet according to node has status will configuration file and .

in Puppet , is ; is . Puppet provide some and , simultaneously user can and . via and use , configuration and very .

Installation and Configuration

Environment Configuration

Puppet Server and between nodes via , need can via to for IP Address. can via configuration DNS or configuration /ets/hosts file implement .

Installation Preparation

in provide Puppet , Puppet Server and agent need all (Puppet for Linux all has provide support , Ubuntu 14.04 system ):

1

wget https://apt.puppetlabs.com/puppetlabs-release-pc1-trusty.deb

1

2

sudo dpkg -i puppetlabs-release-pc1-trusty.deb

sudo apt-get update

Installation Puppet Server

1

sudo apt-get install puppetserver

Start PuppetServer

1

sudo service puppetservice start

Installation PuppetAgent

1

sudo apt-get install puppet-agent

/etc/puppetlabs/puppet/puppet.conf file , setting agent puppet server Address:

1

2

[main]

server = puppetmaster

: puppetmaster is puppetserver .

Start puppet service

1

sudo /opt/puppetlabs/bin/puppet resource service puppet ensure=running enable=true

a configuration file

a Hello World configuration file

a configuration file , we let node : in /etc/file a file helloworld.txt, file is ”hello world from puppet!/n”.

we in puppetserver /etc/puppetlabs/code/environments/production/manifests file , site.pp file :

node puppetagent {
 
file { 'helloworld':
 
    path => '/etc/helloworld.txt',
    owner  => 'root',
    group  => 'root',
    mode   => '655',
    content => "hello world from puppet!/n",
    }
 
}

site.pp is node configuration file , can for node configuration . in configuration file , ”puppetagent”is node . in puppetagent configuration is node .

configuration file , node PuppetServer configuration file in . Puppet support configuration . in , we via method perform configuration Update. we in PuppetAgent command :

root@puppetAgent:/opt/puppetlabs/bin# ./puppet agent --test
2016-05-21 14:24:14.858673 WARN  puppetlabs.facter - locale environment variables were bad; 
                         continuing with LANG=C LC_ALL=C
Info: Using configured environment 'production'
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for puppetagent
Info: Applying configuration version '1463811856'
Notice: /Stage[main]/Main/Node[puppetagent]/File[helloworld]/ensure: 
                        defined content as '{md5}c3aa68786c58c94ef6f3e2399920f268'
Notice: Applied catalog in 0.02 seconds
root@puppetAgent:/opt/puppetlabs/bin# cat /etc/helloworld.txt 
hello world from puppet!

we to node from Puppet Server configuration file , and in , for file .

:

, we node can some . we node can from PuppetServer a command Script, and .

we in /etc/puppetlabs/code/environments/production/modules a ”test” , in test a ”files”file . in this file file is can node . then we in this ”files”file a shell Script test.sh, :

/etc/puppetlabs/code/environments/production/modules/test/files/test.sh

test.sh file :

1

2

touch /etc/helloworld.log

echo "helloworld" >> /etc/helloworld.log

in /etc/directory helloworld.log file , then in file ”hello world”.

directory /etc/puppetlabs/code/environments/production/manifests, then we site.pp file :

node puppetagent {
file { 'test.sh':
 path => '/etc/test.sh',
 owner  => 'root',
 group  => 'root',
 mode   => '655',
 source => 'puppet:///modules/test/test.sh',
 }
exec { 'execute ':
 command => 'bash /etc/test.sh',
 require => File['test.sh'],
 path => ["/bin/"],
}
}

, we : a file and a command . simultaneously has , command file , Puppet file . command in file in .

we :

root@puppetAgent:/opt/puppetlabs/bin# ./puppet agent --test
2016-05-21 15:39:39.817370 WARN  puppetlabs.facter - locale environment variables were bad; 
                                continuing with LANG=C LC_ALL=C
Info: Using configured environment 'production'
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Caching catalog for puppetagent
Info: Applying configuration version '1463816381'
Notice: /Stage[main]/Main/Node[puppetagent]/File[test.sh]/ensure: 
                                defined content as '{md5}2ce060ad2ddab2fe416ca8fb6f8da32a'
Notice: /Stage[main]/Main/Node[puppetagent]/Exec[execute ]/returns: executed successfully
Notice: Applied catalog in 0.05 seconds
root@puppetAgent:/opt/puppetlabs/bin# cat /etc/helloworld.log 
helloworld

we can to , helloworld.log file , file .

Puppet is Ruby system configuration and manage tool , provide system configuration system manage manage and configuration system process . Introduction Puppet system and , and Introduction Puppet system configuration , we IntroductionInstallation and Configuration Puppet . , Introductionhow to in Puppet node configuration file , to file and command . can for system manage , Puppet has Help.

https://www.ibm.com/developerworks/cn/opensource/os-cn-puppet/index.html

Automated Management of Linux Clusters with Puppet