April 2018
Intermediate to advanced
468 pages
14h 34m
English
Content preview from Mastering Kubernetes - Second Edition
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DNS expansion
If the service does not exist in the local cluster (or it exists but has no healthy backend pods), the DNS query is automatically expanded to find the external IP address closest to the requestor's availability zone. KubeDNS performs this automatically and returns the corresponding CNAME. That will get further resolved to the IP address of one of the service's backing pods.
You don't have to rely on automatic DNS expansion. You can also provide the CNAME of a service in a particular cluster directly or in a particular region. For example, on GCE/GKE you can specify nginx.the-namespace.svc.europe-west1.example.com. That will get resolved to a backing pod of the service in one of the clusters in Europe (assuming there are clusters ...
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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.