January 2017
Intermediate to advanced
284 pages
6h 8m
English
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Managing services
Now that the swarm is up and running, it is time to look at services. A service is a collection of one or more tasks that do something. Each task is a container running somewhere in the swarm. Since services are potentially composed of multiple tasks, there are different tools to manage them. In most cases, these commands will be a subcommand of docker service.
Running containers as services in a swarm offers a number of benefits. They are as follows:
- Services can be scaled out quickly and easily.
- Swarm can perform zero-downtime upgrades where updated versions of an image are added while old versions are removed.
- Easily create overlay networks to connect containers running on multiple hosts. (Overlay networks were covered in detail ...
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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.