April 2018
Intermediate to advanced
374 pages
8h 35m
English
Content preview from Kubernetes for Developers
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ImagePullPolicy
If you use :latest tags in your code while trying things, you may have noticed that the value of imagePullPolicy was set to Always:
imagePullPolicy: Always
This tells Kubernetes to always attempt to load new Docker images from container repositories. If you use a tag other than :latest, then the default (IfNotPresent) will only attempt to reload the container images if it can't find them in its local cache.
This is a technique that can be very useful while you are frequently updating your code. I recommend only using this when you are working by yourself, as sharing the knowledge of what exactly :latest means can be difficult and lead to a great deal of confusion.
It is generally considered a bad practice to use the :latest ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.