January 2019
Intermediate to advanced
484 pages
11h 48m
English
Content preview from DevOps with Kubernetes - Second Edition
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ConfigMap
ConfigMap is a resource that allows you to leave your configuration outside a Docker image. It injects the configuration data as key-value pairs into pods. Its properties are similar to secrets, but, whereas secrets are used to store sensitive data, such as passwords, ConfigMaps are used to store insensitive configuration data.
Like secrets, ConfigMaps could be based on files, directories, or specified literal value. They also have a similar syntax to secrets but use kubectl create configmap:
// create configmap# kubectl create configmap example --from-file=config/app.properties --from-file=config/database.propertiesconfigmap "example" created
Since two config files are located in the same folder name, config, we could pass a ...
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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.