July 2020
Beginner
464 pages
12h 39m
English
Content preview from Learn Docker in a Month of Lunches
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14 Automating releases with upgrades and rollbacks
Updating containerized applications should be a zero-downtime process that is managed by the container orchestrator. You typically have spare compute power in your cluster that managers can use to schedule new containers during updates, and your container images have health checks so the cluster knows if the new components fail. Those are the enablers for zero-downtime updates, and you’ve already worked through the process with Docker Swarm stack deployments in chapter 13. The update process is highly configurable, and we’ll spend time exploring the configuration options in this chapter.
Tuning update configuration might sound like a topic you can safely skip, but I can tell you from my own ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.