A Tutorial Introduction to Kubernetes
We use kubernetes to spin up the application that I work on (in private cloud and at some point in hybrid and public cloud) deployments. It’s an end user installed tool. In deployment, about 1/4 of the new installations fail because of some problem or another. Either the GPU plugins for NVIDIA weren’t loaded correctly, kube-dns won’t start because docker0 isn’t in a “trusted” zone in redhat (not being in trusted seems to cause iptables to subtly screw up container to container communication between the various private networks), or helm just decides that it can’t start.Are we doing it wrong?We’re using hyperkube and k8s 1.8 which came out around q4 of last year.Almost all of these I can trace back to user error (ie we told folks to do X, they didn’t, and stuff broke). We’re now having to write a preflight checklist of sorts that the app runs through to make sure A bunch of stuff is “ok.” That in itself becomes brittle in my experience so I’m reluctant to do that.