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Background

• Docker
• Running docker in production ?
  • Scaling
  • Loadbalancing
  • Service Discovery
  • Health checking
• Docker ecosystem (rival)

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What is kubernetes ?

• Distributed process manager/scheduler
• Based on google borg
  • http://research.google.com/pubs/pub43438.html
• Runs and manages containers on cluster of machines
• Deployment, Scaling etc

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Core components

• Pods
• Replication Controllers
• Selectors and labels
• Services

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Pods

• Collection of containers (one or more)
• Each pod gets it's own IP address
• Containers in a pod are interconected
• Ephemeral

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Labels and selectors

• Identify objects in the cluster
• Run queries and actions against the cluster
• Linking replication ctrls to pods
• Linking services to pods/replication controllers

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Replication Controllers

• Replicates pods
• Rolling updates
• Keeps track of pods

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Services

• Defines logical set of pods
• Abstracts access to pods
• Think microservice
• Service discovery
• Loadbalancer

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More

• Secret storage
• Persistant volumes
• Rolling updates
• Autoscaling
• Specify Resources (cpu, mem, disk)

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Useful links

• http://kubernetes.io/
• Coreos - http://coreos.com/
  • Flannel
  • Etcd
  • Fleet
• Digital Ocean setup
  • https://github.com/charles-at-follow/do-k8s-playbooks

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And more...

• Kubernetes and cores using vagrant
  • https://coreos.com/kubernetes/docs/latest/kubernetes-on-vagrant.html
• Docker
  • https://www.docker.com/
• Kubernetes PI
  • https://github.com/luxas/kubernetes-on-arm