Today\u2019s system engineers and still stuck with managing configurations using bash scripts??<\/p>\n
Well, it does not sound good. Go and get everything puppetized !!<\/p>\n
So first of all, why a configuration automation system and how does puppet play an important role in this context?<\/p>\n
One of our web developers came to me and asked, \u201cHow can I quickly model a PHP application without having to bother you for a development environment?\u201d<\/p>\n
I thought it for a while and came to the conclusion that from developer\u2019s point of view it is not feasible to ask for a new environment every time to do the work and being a system engineer i could think that the whole process of managing configurations manually is quite cumbersome task. Luckily, it does not have to be !! Here comes the existence of puppet with which i could get everything solved.<\/p>\n
Puppet is a configuration management tool that is extremely powerful in deploying, configuring, managing, maintaining, a server machine.<\/p>\n
So here you are : LAMP automation with puppet !!<\/p>\n
Using this puppet module, any system engineer, or anyone for that matter, can quickly launch a LAMP environment in minutes to get them going on with applications at developer\u2019s end.<\/p>\n
BEFORE YOU BEGIN :<\/strong><\/p>\n Before you go ahead with this module, make sure that you have puppet master and agent installed on your host machines and agent contains a certificate signed by the puppet master. All you need to do is to get this module installed either from github or puppetforge.<\/p>\n Puppet version >=3.4.0<\/strong> & Ubuntu 14.04\/12.04<\/strong> is recommended for the following configurations.<\/p>\n PUPPET MASTER :<\/strong><\/p>\n MANIFEST FILE : (The location where your puppet code is written.They are standard text files saved with .pp extensions )<\/p>\n Path => [\/etc\/puppet\/modules\/lamp\/manifests\/init.pp]<\/p>\n Now, you just need to include this file into your main manifests.<\/span><\/p>\n Path => \/etc\/puppet\/manifests\/site.pp<\/p>\n The above code signifies that lamp module containing the puppet code should be included for all the requesting puppet-clients. If you want to include your lamp module only for some specific nodes, you need to replace \u2018default\u2019 with the hostname of the requesting nodes.<\/p>\n To install the entire module from puppetforge :-<\/p>\n https:\/\/forge.puppetlabs.com\/webkul\/lamp<\/a><\/p>\n For reference :-<\/p>\n https:\/\/github.com\/nainajohari\/puppet-lamp<\/a><\/p>\n Now, you have to restart the service using the following command :-<\/p>\n PUPPET AGENT :<\/strong><\/p>\n First of all, you must ensure that puppet client is aware of its respective puppet master.To introduce a client machine to the puppet server,make an entry in client\u2019s main configuration file as mentioned below :-<\/p>\n Path -> \/etc\/puppet\/puppet.conf<\/p>\n where, puppetm is the hostname of the respective puppet master.<\/p>\n Now, puppet agent can send a request to puppet master using the following command :-<\/p>\n Here, we have assumed that puppet agent contains a certificate signed by the puppet master.<\/p>\n<\/div>\n<\/div>\n By simply running this single command, the entire puppet code of master\u2019s main manifests will be executed on puppet client.<\/p>\n Repeat the same for multiple puppet clients.<\/p>\n <\/p>\nclass lamp {\r\n\r\n#execute \u2018apt-get update\u2019\r\n\r\nexec { \u2018apt-update\u2019 :\r\n\r\ncommand => \u2018\/usr\/bin\/apt-get update\u2019,\r\n\r\nbefore => Package[\u2018apache2\u2019],\r\n\r\n}\r\n\r\n#install apache2 package\r\n\r\npackage { \u2018apache2\u2019 :\r\n\r\nensure => latest,\r\n\r\nrequire => exec[\u2018apt-update\u2019],\r\n\r\n}\r\n\r\n#ensure apache2 service is running\r\n\r\nservice { \u2018apache2\u2019 :\r\n\r\nensure => running,\r\n\r\nrequire => Package[\u2018apache2\u2019],\r\n\r\n}\r\n\r\n#install mysql-server package\r\n\r\npackage { \u2018mysql-server\u2019 :\r\n\r\nensure => latest,\r\n\r\n}\r\n\r\n#ensure mysql service is running\r\n\r\nservice { \u2018mysql\u2019 :\r\n\r\nensure => running,\r\n\r\nrequire => Package[\u2018mysql-server\u2019],\r\n\r\n}\r\n\r\n# install php5 package\r\n\r\npackage { \u2018php5\u2019 :\r\n\r\nensure => latest,\r\n\r\n}\r\n\r\n# ensure info.php file exists\r\n\r\nfile { \u2018\/var\/www\/html\/info.php\u2019:\r\n\r\nensure => file,\r\n\r\ncontent => \u2018<?php phpinfo(); ?>\u2019,\r\n\r\nrequire => Package[\u2018apache2\u2019],\r\n\r\n}\r\n}<\/pre>\nnode default {\r\n\r\ninclude lamp\r\n\r\n}<\/pre>\nservice puppetmaster restart<\/pre>\n
server = puppetm<\/pre>\n
puppet agent --test<\/pre>\n