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Automating safe, hands-off deployments

Automating safe, hands-off deployments

The Amazon Builder’s Library is a great set of deep dive papers into the challenges with modern systems. This post looks at how Amazon conducts hands-off deployments.

Automating safe, hands-off deployments, takes a look at how Amazon does continuous deployment. Amazon has been doing this practice for a long while and has automated each process to the point where it’s hands-off.

I call out a few more details in the Twitter thread below…

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in today's review, I'm looking at "Automating safe, hands-off deployments" by @clare_liguori at @awscloud

this one is all about getting your work out to your customers

🧡☁️ #cloud #devops

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this thread is available unrolled at

yesterday's thread on "Fairness in multi-tenant systems" is up at

🧡☁️ #cloud #devops

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right out of the gate, I love @clare_liguori's callout, "continuous deployment pipelines to help us deploy quickly and safely"

two keys there: - quickly - safely

🧡☁️ #cloud #devops

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another key quote from early on in the paper, "We identified deployment risks and found ways to mitigate those risks through new safety automation in pipelines" ❀️❀️❀️

spot on! modern deployment reduces risk when done well. keep that in mind #infosec folks

🧡☁️ #cloud #devops

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the paper is roughly broken down in the parts of a pipeline:

- source - build - test - prod

...and of course how they all fit together

🧡☁️ #cloud #devops

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one key point is that _everything_ in production at Amazon gets there via a pipeline. static assets, code, infrastructure, everything

these pipelines make it easier to keep track of the history of changes & to ensure a high bar for quality

🧡☁️ #cloud #devops

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πŸ‘†this also make it easier to do code reviews, as they are all going through the pipelines. a nice example of a code review checklist in presented in the πŸ“‘

🧡☁️ #cloud #devops

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testing is discussed in depth & honestly there is a lot more testing than I expected. it's an example of how Amazon's approach has matured & takes advantage of the @awscloud environment

🧡☁️ #cloud #devops

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deployments themselves are a bit crazy. that, I did expect.

the pipelines need to ensure that they don't negatively impact production...especially at scale.

@clare_liguori does a great job of breaking down the concerns & techniques used here

🧡☁️ #cloud #devops

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πŸ“‘ finishes off w/idea of pipelines as code. very meta but it makes sense given the number of pipelines in use

if you're deploying to production, you should check out this paper. that's a nice way of saying you should go read this paper ASAP 🀣

/🧡☁️ #cloud #devops

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