APIStrat 2016 | Effortless microservices in production with Kubernetes (Ken Wronkiewicz)

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Ken Wronkiewicz @wirehead running in production with Kubernetes Effortless microservices

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@wirehead - 2 Stateless web heads are easy

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@wirehead - 3 Hi

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@wirehead - 4 Kubernetes is the minimum set of tools and abstractions to build a self-healing system.

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@wirehead - 5 Placement is a real-world concern

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@wirehead - 7 Node 1 Node 2 ES Data ES Data ES Master ES Master ES Data

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@wirehead - 8 Service Registries

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@wirehead - 9 Service: ElasticSearch http://elasticsearch:9200 DNS Alias VIP

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@wirehead - 10 The dreaded east-west linkage

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@wirehead - 11 Ingress or LoadBalancer

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@wirehead - 12 LoadBalancer: •  L3 service •  Doesn’t need to be HTTP •  Pretty much complete •  Uses the cloud infrastructure’s load balancer Ingress: •  L7 HTTP service •  Basically nginx or haproxy run in an orchestrated fashion •  Under heavy development and evolution – Not yet awesome •  Can act as an API gateway to multiple internal services Ingress versus LoadBalancer

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@wirehead - 13 Persistent Storage

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@wirehead - 18 One Minute Aphyr (Google “Aphyr Call Me Maybe”)

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@wirehead - 19 T=1 T=1 T=1 (Google “Aphyr Call Me Maybe”)

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@wirehead - 20 T=2 T=1 T=1 User

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@wirehead - 21 T=1 T=1 User

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@wirehead - 22 Assume that your distributed database is going to fail at the worst possible moment

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@wirehead - 23 Most clouds already do MySQL for you…

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@wirehead - 24 Works Not a good idea •  ElasticSearch •  Cassandra •  Galera •  Other Asynchronous replication SQL databases

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@wirehead - 25 Okay, that sounds pretty cool, how do I run Kubernetes?

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@wirehead - 26 Google Container Engine AWS or other clouds On your own hardware •  A few clicks to fire up a cluster •  Part of Google’s Cloud offering •  You need to install it •  Still a mostly seamless experiences •  In production, on your own hardware •  On your laptop with minikube

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@wirehead - 27 Storage Managed A pile of microservices nicely orchestrated Ingress / Load Balancers exposing your services

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@wirehead - 28 Questions?