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The DevOps 2.2 Toolkit
book

The DevOps 2.2 Toolkit

by Viktor Farcic
March 2018
Intermediate to advanced content levelIntermediate to advanced
360 pages
7h 52m
English
Packt Publishing
Content preview from The DevOps 2.2 Toolkit

Extending the capacity of the cluster

Among other resources, Docker For AWS template created two auto-scaling groups. One is used for masters and the other for workers. Those security groups have multiple purposes.

If we choose to update the stack to, for example, change the size of the nodes or upgrade Docker server to a newer version, the template will temporarily increase the number of nodes by one and shut down one of the old ones. The replicas that were running on the old server will be moved to the new one. Once the new server is created, it will move to the next, and the next after that, all the way until all the nodes are replaced. The process is very similar to rolling updates we performed by Swarm when updating services. The same ...

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Publisher Resources

ISBN: 9781788991278Supplemental Content