January 2020
Intermediate to advanced
260 pages
6h 37m
German
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KAPITEL 13
Self Awareness
Manche Anwendungen müssen »sich selbst bewusst« sein und brauchen Informationen über sich selbst. Das Pattern Self Awareness beschreibt die Kubernetes Downward API, die einen einfachen Mechanismus zur Introspektion und zum Injizieren von Metadaten in Anwendungen bereitstellt.
Problem
In den meisten Anwendungsfällen sind Cloud-native Applikationen zustandslos und lassen sich austauschen, ohne dass sie eine Identität besitzen, die für andere Programme relevant sind. Aber manchmal benötigt selbst diese Art von Anwendungen Informationen über sich selbst und die Umgebung, in der sie laufen. Dazu können Informationen gehören, die nur zur Laufzeit bekannt sind, wie zum Beispiel Name und IP-Adresse des Pods oder der Hostname, ...
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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.
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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.