March 2020
Beginner
592 pages
14h 14m
English
Content preview from Learn Docker - Fundamentals of Docker 19.x - Second Edition
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Services
A Swarm service is an abstract thing. It is a description of the desired state of an application or application service that we want to run in a Swarm. The Swarm service is like a manifest describing such things as the following:
- Name of the service
- Image from which to create the containers
- Number of replicas to run
- Network(s) that the containers of the service are attached to
- Ports that should be mapped
Having this service manifest, the Swarm manager then makes sure that the described desired state is always reconciled if ever the actual state should deviate from it. So, if for example, one instance of the service crashes, then the scheduler on the Swarm manager schedules a new instance of this particular service on a node with ...
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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.
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.