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The Bumpy Road Towards Containerised Microservices: Why Early Adoption Meant It Took Longer For Us To Get There @nickywrightson
[email protected]
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@nickywrightson Nicky Wrightson Principal Engineer & Tech Lead @ FT
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@nickywrightson
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https://six-degrees.ft.com/ @nickywrightson
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https://www.ft.com The news business has changed a lot in the last 130 years
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Over 200 services … In two regions … All containerised … Running on Kubernetes @nickywrightson
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2. A meandering journey 3. Where we are now? 1. Why we chose containers 4. What’s next?
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1. Why we chose containers
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Over 200 services … In two regions … ~550 VMs @nickywrightson
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https://www.flickr.com/photos/bluesquarething/5165177846 We realised that we needed to look at containered solutions
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We could reduce costs by ~ 80% using containers @nickywrightson
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What about serverless? @nickywrightson
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2. A meandering journey 1. Why we chose containers
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3 and half years ago we started a proof of concept
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Java service: 9k Requests Simple JSON manipulation 340MB Go service: 40k Requests Database query + manipulation 12MB @nickywrightson
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@nickywrightson
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Content in Containers == CoCo @nickywrightson
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Containerise every service @nickywrightson
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Monitoring @nickywrightson
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Change database and programming language at the same time!!
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It was not all plain sailing @nickywrightson
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Stateful services do not play nice @nickywrightson
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“We need a bigger boat” Richard Dreyfus in Jaws (1975) Image: http://goo.gl/4r26gS
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We kept losing our live clusters
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@nickywrightson
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@nickywrightson
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Monitor and react at the right levels
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Metrics Dashboards for health
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React quickly to security patching @nickywrightson
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Deployment needs to be automated, consistent, repeatable and have the ability to be rolled back @nickywrightson
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@nickywrightson
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Massive shift in operational thinking @nickywrightson
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If it is hard do it more often If it is really hard automate it! @nickywrightson
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@nickywrightson
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https://coreos.com/blog/migrating-from-fleet-to-kubernetes.html
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@nickywrightson
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How to iterate on 200 services at the same time? @nickywrightson
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Photo by chuttersnap on Unsplash @nickywrightson You rarely get it right the first time
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“Stateful services are painful to containerise” Nicky Wrightson January 2016
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2. A meandering journey 1. Why we chose containers 3. Where we are now?
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What did our containerisation journey give us? @nickywrightson
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@nickywrightson
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Operationally supportable @nickywrightson
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Kubernetes will fix that …. @nickywrightson
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Deployments are more graceful @nickywrightson
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2. A meandering journey 1. Why we chose containers 3. Benefits to us now? 4. What’s next?
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Enhance our initial approach
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@nickywrightson
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Get someone else to do the heavy lifting @nickywrightson
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One cluster to rule them all … @nickywrightson
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Federation
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In Conclusion … @nickywrightson
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Hindsight is always 20:20 Photo by NeONBRAND on Unsplash
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Spend your innovation tokens wisely http://mcfunley.com/choose-boring-technology Photo by rawpixel on Unsplash
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@nickywrightson
[email protected]
Thanks