• DevOps

DevOps

• Why SaltStack 2016 - http://ryandlane.com/blog/2014/08/04/moving-away-from-puppet-saltstack-or-ansible/

• Kubernetes

  • Info YouTube

  • Google, pod docker/container manager
  • Labels
  • Node
  • Pods - one or more containers, share network name space, pods expose single IP for all containers.

  • Reconciliation loop -> Driver current state to expected state.

    • Create, Delete, Monitor, Replication

  • Service -> discover dynamic - long lived. uses selector to match labels and proxy's

    • Fake IP and DNS available in single pod.
  • Network Model
    • Load balancer/proxy between every layer in the application.
      • Handles service discovery with fixed IP.
  • Kubernetes infrastructure

    • CoreOs

    • Docker / Rocket
      • Docker generates dynamic IP.
        • Kubernetes node launches infrastructure container first on Docker, to get IP and report back.

    • etcd - user raft protocol, for highly available key value store.

    • flannel
    • Kubernetes controller (etcd webservice exposure, scheduler, replication controller)
    • Kubernetes node (kubelet, watch controller, and update status, talks to container e.g. docker)
    • Terraform
    • Google Compute Engine.

• etcd

...