Puppet uses its own language in order to assure that changes a properly propagated, in this section, we will use DSL do automate a lot of tasks like:

• Creating & Modify Users
• Install & Configure Packages
• Implement System changes

All that will be accross our infrastructure, which unfortunetely is only 3 servers:

• PuppetMaster
• PuppetSlave
• PuppetSlaveTwo

So let's start with the basic understanding of how DSL works. Puppet architecture is comprised by:

• Resources (e.g. in-build functions & operations: file, user, router, etc, perform individual tasks)
• Classes (e.g. combination of resources, multiple small operations)
• Manifest (e.g. definitions and declarion of puppet classes)
• Modules (e.g. collection of files and manifest, example: mysql & jenkins module)

Once an object is created it has to go through the chain of release as follows:

So let's see that in an example:

To create a user, we will use a simple resource (e.g. function: user, to ensure that it exist)

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