Summary of Everything You Thought You Already Knew About Orchestration - Laura Frank (Codeship)

00:00:00 - 00:35:00

In the video, Laura Frank discusses how orchestration systems work and how they can be used to manage distributed state. She demonstrates how to deploy a voting app using docker stack deploy, and how to recover from quorum loss by restoring a backup and restarting docker.

• 00:00:00 In this talk, Laura Frank from Codeship discusses how orchestration systems manage distributed state and services. She also covers how to determine the size and composition of an orchestration system's manager group, and how quorum is used to avoid failures.
• 00:05:00 This video discusses the concepts of fault tolerance, quorum, and orchestration systems. It explains that a manager group of one quorum is not fault tolerant, and that having two managers doubles the chance of losing quorum. Additionally, raft is a new algorithm that is easier to understand and is used in a variety of orchestration systems.
• 00:10:00 This video explains how the leader election process works in a cluster of Docker nodes using the raft algorithm. If one of the nodes in the cluster fails, the leader election process can continue using the remaining nodes.
• 00:15:00 In this video, Laura Frank discusses how orchestration systems, specifically raft, manage distributed state. raft has a log that is meant for computers and not humans, and when quorum is lost, the system can recover by committing the uncommitted data.
• 00:20:00 In this video, Laura Frank explains how orchestration works, and how distributed logs can be used to keep track of state. She also demonstrates how to deploy a voting app using docker stack deploy.
• 00:25:00 This video explains how orchestration systems work and how scheduling algorithms can be different. It also discusses placement preferences and how they can be used to manage the way work is scheduled.
• 00:30:00 In this video, Laura Frank discusses orchestration concepts, including how to add a placement preference and how swarm will handle quorum loss. She also provides tips for recovering from failed orchestration tasks.
• 00:35:00 In this video, Laura Frank demonstrates how quorum loss can prevent cluster operations from proceeding normally, and how to recover from the situation by restoring a backup and restarting docker.