Docker Mastery: Section 7 - Swarm intro & creating a 3-Node Swarm Cluster

• section7-59

Udemy

• Docker Mastery: with Kubernetes +Swarm from a Docker Captain

• GitHub: udemy-docker-mastery

• 講師的YouTube

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Containers Everywhere = New Problems

• How do we automate container lifecycle ?
• How can we easily scale out/in/up/down ?
• How can we ensure our containers are re-created if they fail ?
• How can we replace containers without downtime (blue/green deploy) ?
• Hoe can we control/track where containers get started ?
• How can we create cross-node virtual networks ?
• How can we ensure only trusted servers run our containers ?
• Hoe can we store secrets, keys, passwords and get them to the right container (and only that container) ?

Swarm Mode: Built-In Orchestration

• Swarm Mode is a clustering solution built inside Docker
• Not related to Swarm “classid” for pre-1.12 versions
• Added in 1.12 (Summer 2016) via Swarmkit toolkit
• Enhanced in 1.13 (January 2017) via Stacks and Secrets
• Not enabled by default, new commands once enabled
  • docker swarm
  • docker node
  • docker service
  • docker stack
  • docker secret

靠杯! 老師講的很清楚，我聽的很模糊…

• RAFT

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Swarm Mode Deep Dive

• part 1

• part 2

• good reference:

  • https://speakerdeck.com/aluzzardi/heart-of-the-swarmkit-topology-management?slide=3
  • http://thesecretlivesofdata.com/raft/