Using Puppet and DSC to Report on Environment Change

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Using Puppet and DSC to Report on Environment Change James Pogran Senior Software Engineer - Windows Puppet

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> Get-Agenda • Importance of Change Reporting • How DSC does Change Reporting • How Puppet improves Change Reporting

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> whoami • At Puppet for over 2 years • Puppet Modules • Core Agent and Installer • PDK • Puppet VS Code extension

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> whoami • http://jamespogran.com • @ender2025

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Change Reporting

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Change Reporting Why is it important?

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Change Reporting Knowledge is power

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More frequent Code deployments 46x That’s the difference between multiple times per day and once a week or less. Faster lead time from commit to deploy 440x That’s the difference between less than an hour and more than a week.

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96x faster mean time to recover from downtime That means high performers recover in less than an hour instead of several days. 5x lower change failure rate That means high performers’ changes fail 7.5% of the time instead of 38.5%.

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Change Reporting Time spent looking is time wasted

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Change Reporting It should be automatic

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Change Reporting It needs to be recorded

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Those who cannot remember the past are condemned to repeat it. - George Santayana

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DSC Change Reporting

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PowerShell DSC A primer

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PowerShell DSC Primer 1. DSC Configurations 2. DSC Resources 3. Local Configuration Manager (LCM)

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DSC Deployment Modes DSC Push Mode • One time execution of DSC Configurations • Does not distribute DSC Resources • Does not store results from DSC execution

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DSC Deployment Modes DSC Push Mode • One time execution of DSC Configurations • Does not distribute DSC Resources • Does not store results from DSC execution DSC Pull Server • Stores and executes DSC Configurations • Distributes DSC Resources • Maintains registry of nodes • Stores data from each DSC execution

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DSC Change Event Types

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DSC Change Event Types

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PowerShell DSC Ok, really, how do we get the change data?

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Getting DSC Change Events • Query change events using REST API • Use any script/command capable of web calls • PowerShell to the rescue! Maybe…

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Demo Getting DSC Change Events

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Puppet Change Reporting Puppet & DSC Together

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Puppet A Primer

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Puppet Primer 1. Puppet Manifests 2. Puppet Modules 3. Puppet Agent

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Puppet Enterprise Deployment Modes • Stores and distributes manifests, modules and files • Maintains a registry of nodes • Stores data from each Puppet execution

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Puppet Change Event Types • Failure • Corrective Change • Intentional Change • Corrective no-op • Intentional no-op • Skip

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Puppet Change Event Types • Failure • Corrective Change • Intentional Change • Corrective no-op • Intentional no-op • Skip

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Puppet Property based change events

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View Puppet Change Events • PE Console to view results • Visual representation of target node status • Detailed information on change status

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Puppet Change Reporting • Entire environment at a glance

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Puppet Change Reporting • Event summary

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Puppet Change Reporting • Granular filtering

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Demo Puppet & DSC together

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> Get-Summary Puppet provides • A single way to view change events across all nodes without manual effort • Reports for most use cases built in • Queryable API provides customized reporting • Information collated for you without have to do extra configuration

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> Get-Help -full • Code available at https://github.com/jpogran/presentations/puppetconf/puppetconf2017 • Beginners guide to install PE: https://puppet.com/blog/how-get-started-puppet-beginners- guide • Windows on the Puppet blog: https://puppet.com/blog-tags/windows • Glenn Sarti – How to Not Freak out When you Start Writing Puppet Modules for Windows https://youtu.be/9A2-_nPrqfs