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This is the way - Holistic (Network) Automation

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This is the way - Holistic (Network) Automation
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62
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CC Attribution 4.0 International:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
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The Systems Engineering / SRE world has undergone a shift of thinking towards intend driven holistic configuration management a long time ago, but it feels like the majority of network automation solutions are still following the idea of making incremental changes to the routers and switches out there, which at the same time might also be managed manually by operators typing (or copying) magic spells into a CLI. This makes the device configuration the synchronization point and we don’t really have an idea of what this configuration will look like in full without checking back on the device. I believe we as Network (Automation) Engineers need to follow suit, make the mental shift to the holistic approach, let Perl, Shell and expect scripts be, and bring software engineering methods to network automation. This way we are able to tackle the problems at hand at an abstract level, build solutions which can be reasoned with, tested on their own, and scale to our needs. For the most daunting problem of configuration management this means plugging some of those systems together and building a solution which generates and owns the full device configuration. Dealing with diverging configuration parts, across the fleet, carefully cleaning up old approaches to configure X, doing incremental changes, and figuring out how to interact with a platform API, a dialect of NETCONF, YANG, etc. would all be from the past –-- wouldn’t that be great?
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