April 2018
Intermediate to advanced
374 pages
8h 35m
English
Content preview from Kubernetes for Developers
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Persistence with Kubernetes
So far, all our examples, and even code, have been essentially stateless. In the last chapter, we introduced a container using Redis, but didn't specify anything special for it. By default, Kubernetes will assume any resources associated with a pod are ephemeral, and if the node fails, or a deployment is deleted, all the associated resources can and will be deleted with it.
That said, almost all the work we do requires storing and maintaining state somewhere—a database, an object store, or even a persistent, in-memory queue. Kubernetes includes support for persistence, and as of this writing, it's still changing and evolving fairly rapidly.
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