January 2019
Intermediate to advanced
484 pages
11h 48m
English
Content preview from DevOps with Kubernetes - Second Edition
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Placing pods with constraints
Most of the time, we don't really care about which node our pods are running on as we just want Kubernetes to arrange adequate computing resources to our pods automatically. Nevertheless, Kubernetes isn't aware of factors such as the geographical location of a node, availability zones, or machine types when scheduling a pod. This lack of awareness about the environment makes it hard to deal with situations in which pods need to be bound to nodes under certain conditions, such as deploying testing builds in an isolated instance group, putting I/O intensive tasks on nodes with SSD disks, or arranging pods to be as close as possible. As such, to complete the scheduling, Kubernetes provides different levels of affinities ...
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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.