July 2018
Intermediate to advanced
504 pages
11h 34m
English
Content preview from Learn OpenShift
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Using Kubernetes labels
When you have an application that consists of one pod and one service, there is no problem operating these resources. But when your application grows, or you have tens or hundreds of projects, pods, services and other Kubernetes resources, it will get harder to operate and effectively troubleshoot Kubernetes. This is where we can use the Kubernetes labels we mentioned earlier in this chapter. We are going to run a couple more Kubernetes pods using labels:
$ kubectl run httpd1 --image=httpd --labels="app=httpd-demo1"$ kubectl run httpd2 --image=httpd --labels="app=httpd-demo2"
Check the Kubernetes pods we have at the moment:
$ kubectl get podsNAME READY STATUS RESTARTS AGEhttpd-8576c89d7-qjd62 1/1 Running 0 17mhttpd1-c9f7d7fd9-rn2nz ...
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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.
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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.