May 2017
Intermediate to advanced
436 pages
9h 44m
English
Content preview from The DevOps 2.1 Toolkit: Docker Swarm
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Persisting stateful services on the host
Host-based persistence was very common in the early Docker days when people were running containers on predefined nodes without schedulers like Docker Swarm, Kubernetes, or Mesos. Back then, we would choose a node where we'll run a container and put it there. Upgrades were performed on the same server. In other words, we packaged applications as containers and, for the most part, treated them as any other traditional service. If a node fails... tough luck! It's a disaster with or without containers.
Since serves were prederfined, we could persist the state on the host and rely on backups when that host dies. Depending on the backup frequency, we could lose a minute, an hour, a day, or even a whole ...
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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.
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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.