Кабринский Эдуард - Puppet devops - Kabrinskiy Eduard
<h1>Puppet devops</h1>
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<h1>Puppet Cheat Sheet</h1>
<p>This DevOps tutorial will now provide you with the Puppet cheat sheet. In this Puppet cheat sheet module, you can learn end-to-end Puppet in a compact way. Also, while going through this module, you can take note of some important ..Read More Puppet terminology.</p>
<h2>Puppet User Handbook</h2>
<p>Are you a programmer looking for a powerful tool to manage your servers? If yes, then you must take Puppet into consideration.</p>
<p>This Puppet cheat sheet is designed for those who have started their journey with Puppet and need a handy reference to implement what they have learned in real-time.</p>
<p style="clear: both"><img src="https://intellipaat.com/mediaFiles/2019/03/Puppet-Cheat-Sheet.jpg" /></p>
<p>In the early days of software development, everything was done manually such as inspecting, operating, and delivering applications. Later on, different phases of SDLC started getting automated, and it is there Puppet came into the picture.</p>
<p>Puppet is an open-source configuration framework. It is a tool that gives an automatic way of inspecting, delivering, and operating applications faster. It helps in discovering content in cloud, containers, and on-premises systems and what software runs on them.</p>
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<h3>Watch this Puppet Tutorial for Beginners:</h3>
<p><iframe src="https://www.youtube.com/embed/kHD4KQKKP5Y?rel=0"></iframe></p>
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<h2>What is Puppet?</h2>
<p>It is an open-source system management tool used for automating configuration management, a detailed recording and updating of information that describes the enterprise software and hardware.</p>
<p>This configuration framework is useful:</p>
<p><ul>
<li>When we have a lot of machines needed to be configured in a similar way</li>
<li>When we have an infrastructure that requires dynamic scaling up/down with pre-determined config</li>
<li>To have control over all the config machines so that a centralized change gets propagated</li>
</ul>
</p>
<p style="clear: both"><img src="https://intellipaat.com/blog/wp-content/uploads/2020/09/Certification-in-Cloud-Devops-IITG-1.jpg" /></p>
<h2>Puppet Architecture</h2>
<p>Further, in this tutorial, we will look into the architecture of Puppet. The below image shows the components and workflow of Puppet:</p>
<p style="clear: both"><img src="https://intellipaat.com/mediaFiles/2019/03/Puppet-Architecture.png" /></p>
<p><ul>
<li><strong>Node</strong>: It consists of a block of Puppet code.</li>
<li><strong>Puppet Master</strong>: It is the master node that controls the flow and has the authority.</li>
<li><strong>Catalog</strong>: It is a document describing the state of resources on a node, which is managed by Puppet.</li>
<li><strong>Report</strong>: It is a record of the actions and infrastructure applied by a catalog during a Puppet run</li>
</ul>
</p>
<h3>Files</h3>
<p>In Puppet, all programs, written in any programming language, are stored in a file that is used to manage directories and symlinks.</p>
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<p><strong>Attributes:</strong></p>
<p><ul>
<li>Ensure if the file exists or not and what it should be. Allowed: <ul>
<li>File</li>
<li>Directory</li>
<li>Link</li>
<li>Present</li>
<li>Absent</li>
</ul>
</li>
<li>Normal files: <ul>
<li>Source: The source of a file</li>
<li>Content: The desired content as a string</li>
</ul>
</li>
<li>Directories: <ul>
<li>Source: The source of a file</li>
<li>Recurse: Whether to recursively manage the files in the directory</li>
<li>Purge: Whether the unmanaged files in the directory should be deleted</li>
</ul>
</li>
<li>Symlinks: <ul>
<li>Target: The symlink target</li>
</ul>
</li>
<li>Others: backup, checksum, force, ignore, links, and replace</li>
</ul>
</p>
<h3>Package</h3>
<p>It is used to manage software packages.</p>
<p><strong>Attributes:</strong></p>
<p><ul>
<li><ul>
<li><ul>
<li>Name: The name of the package</li>
<li>Ensure if it should be installed or not</li>
<li>Present</li>
<li>Latest</li>
<li>Absent</li>
<li>Purged</li>
<li>Source: Where to obtain the package</li>
<li>Provider: Which packaging system to use</li>
</ul>
</li>
</ul>
</li>
</ul>
</p>
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<h3>Service</h3>
<p>It is used to perform routine maintenance.</p>
<p><strong>Attributes:</strong></p>
<p><ul>
<li><ul>
<li>Name: The name of the service to run</li>
<li>Ensure the status whether it is running or stopped</li>
<li>Enable: If it should start on boot</li>
<li>Hasrestart: Whether to use the init script restart command instead of stop+start</li>
<li>Hasstatus: Whether to use the init script status command</li>
</ul>
</li>
</ul>
</p>
<p style="clear: both"><img src="https://intellipaat.com/blog/wp-content/uploads/2020/09/Become-a-Cloud-and-DevOps-Architect-IBM-MS-1.jpg" /></p>
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<h3>Classes and Modules</h3>
<p><strong>Classes:</strong></p>
<p>Defining classes makes the class available by its name but not by the code inside. Declaring a class evaluates the code inside too.</p>
<p><strong>Modules:</strong></p>
<p>By stowing the implementation of a feature in a module, our main manifest can become much smaller, more readable, and policy-focused.</p>
<p><strong>Module structure:</strong></p>
<p><ul>
<li><ul>
<li>A module is a directory.</li>
<li>Module and directory names have to be the same.</li>
<li>A module contains the manifest directory (contains .pp files).</li>
<li>It should contain the init.pp file.</li>
</ul>
</li>
</ul>
</p>
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<h3>Puppet CLI</h3>
<p>Puppet CLI consists of a single Puppet command with multiple sub-commands.</p>
<p><ul>
<li>Bootstrap client: Tasks that bootstrap or install Puppet on the agent node</li>
</ul>
<ul>
<li>Displaying facts:</li>
</ul>
<ul>
<li>Injecting facts:</li>
</ul>
<ul>
<li>Finding out effective classes on a node:</li>
</ul>
<ul>
<li>Finding out the file modification date:</li>
</ul>
<ul>
<li>Disabling and enabling Puppet agent:</li>
</ul>
<ul>
<li>Managing certificates:</li>
</ul>
<ul>
<li>Managing nodes:</li>
</ul>
<ul>
<li>Managing modules:</li>
</ul>
</p>
<h3>Watch this interesting video on Puppet Installation:</h3>
<p><iframe src="https://www.youtube.com/embed/7cPc3yGcrcY?rel=0"></iframe></p>
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<ul>
<li>Inspecting resources and types:</li>
</ul>
<ul>
<li>Debugging and deploying:</li>
</ul>
<ul>
<li>Other commands:</li>
</ul>
<table ><tbody><tr><td style="text-align: center"><strong>Function</strong></td><td style="text-align: center"><strong>Command</strong></td></tr><tr><td>To check the version</td><td>Puppet –version</td></tr><tr><td>File content manifest – site.pp</td><td>file < вЂ/tmp/dafile’:<br />content => “datext\n”, <br />></td></tr><tr><td>File content manifest – multiple nodes</td><td>node вЂdanodename’ <<br />file < вЂ/tmp/dafile’:<br />content => “datext\n”, <br />><br />></td></tr><tr><td>To remove packages</td><td>package < вЂapache2.0-common’:<br />ensure => absent, <br />></td></tr><tr><td>To update packages</td><td>package < вЂpuppet’:<br />ensure => latest, <br />></td></tr><tr><td>To start service at the boot time</td><td>service < вЂnginx’:<br />ensure => running, <br />enable => true, #false disables auto-startup <br />></td></tr><tr><td>To set to a specific version</td><td>package < вЂnginx’:<br />ensure => вЂ1.1.18-1ubuntu0.1’, <br />></td></tr></tbody></table>
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<h2>Advantages of Puppet</h2>
<ul>
<li>Infrastructure as code(IAC): Puppet enables us to define IAC by easily coding a few scripts. It consists of version control, peer review, automated testing, and delivery.</li>
<li>Reduced downtime</li>
<li>Faster deployment time</li>
<li>Easy automation of repetitive tasks</li>
<li>Supports a lot of platforms like Windows, Debian, BSD, etc.</li>
</ul>
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<p>In this Puppet cheat sheet, we covered almost all Puppet topics that you should know to start working with it. If you want more, Intellipaat has resources that would satisfy your quest.</p>
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<p>In the course, all the important DevOps concepts are included such as Docker, Chef, Git/GitHub, Ansible, Jenkins, Kubernetes, Selenium, Nagios, etc., along with Puppet. Sign up with us today and follow the right learning path toward DevOps!</p>
<h2>Puppet devops</h2>
<h3>Puppet devops</h3>
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<h4>Puppet devops</h4>
Get the ultimate Puppet Cheat Sheet to learn Puppet, its commands, architecture, modules, etc. Download the Puppet Commands Cheat Sheet PDF now.
<h5>Puppet devops</h5>
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Эдуард Кабринский
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