多应用+插件架构,代码干净,二开方便,首家独创一键云编译技术,文档视频完善,免费商用码云13.8K 广告
#### MCollective架构篇3-Puppet插件的部署及测试 ### 1 puppet插件的安装及测试 MCollective可以使用多种方式进行扩展。最普遍的一种扩展MCollective的方式就是重用已经写好的agent插件。这些小的Ruby库可以让MCollective在整个集群中执行自定义的命令。 一个agent插件通常包含一个Ruby库,它必须被分发到所有运行MCollective agent的节点上。另外,一个数据定义文件(DDL)提供了插件接受的传入参数的具体描述,整个DDL文件需要放在MCollective客户端系统上。最后,一个使用指定的agent插件运行MCollective的脚步也需要被安装到所有的MCollective客户端系统上。 **备注:**更多插件可以在[https://github.com/puppetlabs/mcollective-plugins找到。](https://github.com/puppetlabs/mcollective-plugins找到。) **1.1 安装puppet agent插件** MCollective本身并不包含一个可以立即使用的Puppet agent插件,需要安装使用。这一插件可以让操作员在需要时运行Puppet agent。他不需要等待Puppet agent的默认运行间隔,也不需要使用其他工具来开始这些任务 **1.1.1 安装MCollective的Agent插件** ~~~ [root@agent1 rpms]# yum install mcollective-puppet-agent mcollective-puppet-common [root@agent1 rpms]# ll /usr/libexec/mcollective/mcollective/agent/ total 36 -rw-r--r-- 1 root root 1033 May 21 01:34 discovery.rb -rw-r--r-- 1 root root 8346 May 14 07:28 puppet.ddl -rw-r--r-- 1 root root 7975 May 14 07:25 puppet.rb -rw-r--r-- 1 root root 5999 May 21 01:34 rpcutil.ddl -rw-r--r-- 1 root root 3120 May 21 01:34 rpcutil.rb [root@puppetserver rpms]# yum install mcollective-puppet-client mcollective-puppet-common [root@puppetserver rpms]# ll /usr/libexec/mcollective/mcollective/agent/ total 28 -rw-r--r-- 1 root root 1033 May 21 01:34 discovery.rb -rw-r--r-- 1 root root 8346 May 14 07:28 puppet.ddl -rw-r--r-- 1 root root 5999 May 21 01:34 rpcutil.ddl -rw-r--r-- 1 root root 3120 May 21 01:34 rpcutil.rb ~~~ **1.1.2 载入Agent插件** ~~~ [root@puppetserver rpms]# mco #客户端默认在自动载入 The Marionette Collective version 2.2.4 usage: /usr/bin/mco command <options> Known commands: completion facts find help inventory ping plugin puppet rpc Type '/usr/bin/mco help' for a detailed list of commands and '/usr/bin/mco help command' to get detailed help for a command [root@agent1 ~]# /etc/rc.d/init.d/mcollective restart Shutting down mcollective: [ OK ] Starting mcollective: [ OK ] ~~~ **1.1.3 验证Agent插件是否被载入** ~~~ [root@puppetserver rpms]# mco inventory agent1.kisspuppet.com #查看节点agent1是否已经载入puppet插件 Inventory for agent1.kisspuppet.com: Server Statistics: Version: 2.2.4 Start Time: Thu Oct 03 16:09:03 +0800 2013 Config File: /etc/mcollective/server.cfg Collectives: mcollective Main Collective: mcollective Process ID: 8902 Total Messages: 3 Messages Passed Filters: 3 Messages Filtered: 0 Expired Messages: 0 Replies Sent: 2 Total Processor Time: 0.46 seconds System Time: 0.12 seconds Agents: discovery puppet rpcutil Data Plugins: agent fstat puppet #已经载入puppet插件 resource Configuration Management Classes: No classes applied Facts: mcollective => 1 ~~~ **1.1.4 从MCollective中运行Puppet** ~~~ 在运行命令之前,可以在节点查看puppet日志和puppetd服务的启停来判断命令是否调用了puppetd进程。 [root@puppetserver ~]# mco puppet --noop --verbose status #查看节点agent守护进程状态 Discovering hosts using the mc method for 2 second(s) .... 2 * [ ============================================================> ] 2 / 2 agent2.kisspuppet.com: Currently stopped; last completed run 9 hours 35 minutes 36 seconds ago agent1.kisspuppet.com: Currently stopped; last completed run 9 hours 35 minutes 34 seconds ago Summary of Applying: false = 2 Summary of Daemon Running: stopped = 2 Summary of Enabled: enabled = 2 [root@puppetserver rpms]# mco puppet -v runonce Discovering hosts using the mc method for 2 second(s) .... 2 * [ ============================================================> ] 2 / 2 agent1.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} agent2.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} ---- rpc stats ---- Nodes: 2 / 2 Pass / Fail: 2 / 0 Start Time: Thu Oct 03 16:12:03 +0800 2013 Discovery Time: 2007.23ms Agent Time: 3591.72ms Total Time: 5598.94ms ~~~ 备注:当使用MCollective运行Puppet时,要求在所有被管理的节点上Puppet agent守护进程都需要被关闭。在每次使用mco puppet -v runonce命令调用puppetd agent时,MCollective都会产生一个新的Puppet进程。这个进程会和任何已经运行的Puppet agent守护进程产生功能性的重复。 当Puppet使用--runonce参数运行时,agent会在后台运行。所以虽然MCollective成功运行了Puppet,但实际上的Puppet agent运行可能[http://kisspuppet.com/2013/11/10/my-fact/并不成功。需要查看Puppet报告来确定每一个Puppet](http://kisspuppet.com/2013/11/10/my-fact/并不成功。需要查看Puppet报告来确定每一个Puppet) agent运行的结果。MCollective返回的OK值表示MCollective服务器成功地启动了puppetd进程并且没有得到任何输出。 **1.2 安装facter插件(测试多次发现存在不稳定性)** 注意:通过facter插件获取节点facter变量信息不是很稳定,因此可将节点facts信息通过inline_template写入/etc/mcollective/facts.yaml中,并在/etc/mcollective/server.cfg中设置factsource = yaml,这样MCollective客户端只需要每次读取这个文件中的facter变量即可。而且在本地目录/var/lib/puppet/yaml/facts/也会生成一份节点的facter信息,模块部分信息如下: ~~~ class mcollective::facter { file{"/etc/mcollective/facts.yaml": owner => root, group => root, mode => 0440, loglevel => debug, # reduce noise in Puppet reports content => inline_template('<%= scope.to_hash.reject { |k,v| k.to_s =~ /(uptime.*|path|timestamp|free|.*password.*|.*psk.*|.*key)/ }.to_yaml %>'), } } [root@agent1 ~]# yum install mcollective-facter-facts [root@agent1 rpms]# ll /usr/libexec/mcollective/mcollective/facts/ total 12 -rw-r--r-- 1 root root 422 Feb 21 2013 facter_facts.ddl -rw-r--r-- 1 root root 945 Feb 21 2013 facter_facts.rb -rw-r--r-- 1 root root 1530 May 21 01:34 yaml_facts.rb [root@agent1 ~]# vim /etc/mcollective/server.cfg … # Facts #factsource = yaml #注释掉 factsource = facter plugin.yaml = /etc/mcollective/facts.yaml [root@agent1 rpms]# /etc/rc.d/init.d/mcollective restart Shutting down mcollective: [ OK ] Starting mcollective: [ OK ] [root@puppetserver rpms]# mco inventory agent1.kisspuppet.com #查看节点agent1是否加载了facts插件 Inventory for agent1.kisspuppet.com: Server Statistics: Version: 2.2.4 Start Time: Thu Oct 03 16:31:47 +0800 2013 Config File: /etc/mcollective/server.cfg Collectives: mcollective Main Collective: mcollective Process ID: 9485 Total Messages: 37 Messages Passed Filters: 33 Messages Filtered: 4 Expired Messages: 0 Replies Sent: 32 Total Processor Time: 0.74 seconds System Time: 0.21 seconds Agents: discovery puppet rpcutil Data Plugins: agent fstat puppet resource Configuration Management Classes: No classes applied Facts: #可以看到获取的节点facter信息(获取信息需要一些等待时间) architecture => x86_64 augeasversion => 0.10.0 bios_release_date => 07/02/2012 bios_vendor => Phoenix Technologies LTD bios_version => 6.00 blockdevice_fd0_size => 4096 … uptime_days => 0 uptime_hours => 20 uptime_seconds => 74506 uuid => 564DFBAB-CADC-FC69-36CA-955BFDB30F43 virtual => vmware [root@puppetserver rpms]# mco facts lsbdistdescription -v #使用mco facts命令对操作系统类型进行显示 Discovering hosts using the mc method for 2 second(s) .... 2 Report for fact: lsbdistdescription Red Hat Enterprise Linux Server release 5.7 (Tikanga)found 1 times agent2.kisspuppet.com Red Hat Enterprise Linux Server release 5.8 (Tikanga)found 1 times agent1.kisspuppet.com ---- rpc stats ---- Nodes: 2 / 2 Pass / Fail: 2 / 0 Start Time: Thu Oct 03 16:59:04 +0800 2013 Discovery Time: 2004.83ms Agent Time: 67.32ms Total Time: 2072.15ms [root@puppetserver rpms]# mco facts lsbdistdescription #使用mco facts命令对操作系统类型进行统计 Report for fact: lsbdistdescription Red Hat Enterprise Linux Server release 5.7 (Tikanga)found 1 times Red Hat Enterprise Linux Server release 5.8 (Tikanga)found 1 times Finished processing 2 / 2 hosts in 79.15 ms [root@puppetserver rpms]# mco facts -v --with-fact hostname='agent1' memoryfree #查看主机agent1的剩余内存 Discovering hosts using the mc method for 2 second(s) .... 1 Report for fact: memoryfree 795.13 MB found 1 times agent1.kisspuppet.com ---- rpc stats ---- Nodes: 1 / 1 Pass / Fail: 1 / 0 Start Time: Thu Oct 03 17:02:13 +0800 2013 Discovery Time: 2005.65ms Agent Time: 49.37ms Total Time: 2055.03ms ~~~ **1.3 使用元数据定位主机** **1.3.1 使用默认facter元数据定位主机** **1.3.1.1 触发所有系统为RedHat,版本为5.7的所有节点puppetd守护进程** ~~~ [root@puppetserver rpms]# mco puppet -v runonce rpc --np -F operatingsystemrelease='5.7' -F operatingsystem='RedHat' Discovering hosts using the mc method for 2 second(s) .... 1 agent2.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} ---- rpc stats ---- Nodes: 1 / 1 Pass / Fail: 1 / 0 Start Time: Thu Oct 03 17:03:56 +0800 2013 Discovery Time: 2008.09ms Agent Time: 1187.69ms Total Time: 3195.78ms ~~~ **1.3.1.2 触发所有系统为RedHat,kernel版本为2.6.18的所有节点puppetd守护进程** ~~~ [root@puppetserver rpms]# mco puppet -v runonce rpc --np -F kernelversion='2.6.18' -F operatingsystem='RedHat' Discovering hosts using the mc method for 2 second(s) .... 2 agent2.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} agent1.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} ---- rpc stats ---- Nodes: 2 / 2 Pass / Fail: 2 / 0 Start Time: Thu Oct 03 17:06:15 +0800 2013 Discovery Time: 2004.32ms Agent Time: 1308.34ms Total Time: 3312.66ms ~~~ **1.3.2 使用自定义facter元数据定位主机** 备注:使用自定义facter元数据可以更加灵活的定位主机,如何定义fact可参考博文《通过自定义fact增强MCollective推送更新元数据的灵活性》 **1.3.2.1 在agent1上定义facter my_apply1和my_apply2** ~~~ [root@agent1 mcollective]# facter -p | grep my_apply my_apply1 => apache my_apply2 => mysql ~~~ **1.3.2.2 在agent2上定义facter my_apply2和my_apply3** ~~~ [root@agent2 mcollective]# facter -p | grep my_apply my_apply2 => mysql my_apply3 => php ~~~ **1.3.2.3 在MCollective客户端测试节点自定义facter是否正确** ~~~ [root@puppetserver facter]# mco inventory agent1.kisspuppet.com | grep my_apply my_apply1 => apache my_apply2 => mysql [root@puppetserver facter]# mco inventory agent2.kisspuppet.com | grep my_apply my_apply2 => mysql my_apply3 => php ~~~ **1.3.2.4 通过自定义facter定位主机触发更新** ~~~ [root@puppetserver facter]# mco puppet -v runonce mco facts -v --with-fact my_apply3='php' #筛选节点facter变量my_apply3=php的主机进行触发puppetd守护进程 Discovering hosts using the mc method for 2 second(s) .... 1 * [ ============================================================> ] 1 / 1 agent2.kisspuppet.com : OK {:summary=> "Started a background Puppet run using the 'puppet agent --onetime --daemonize --color=false --splay --splaylimit 30' command"} ---- rpc stats ---- Nodes: 1 / 1 Pass / Fail: 1 / 0 Start Time: Thu Oct 03 23:33:54 +0800 2013 Discovery Time: 2005.35ms Agent Time: 1078.86ms Total Time: 3084.21ms ~~~