Lab 20.1-2 not working

wiseoak

First you get error because of taint then if you fix that you get error for failing to setup network.
I run fedora with virtualbox where i create an ubuntu 20.04 LTS machine.
Please make sure the steps actually work.

Events:
Type Reason Age From Message
---- ------ ---- ---- -------
Warning FailedScheduling 5m40s (x2 over 10m) default-scheduler 0/1 nodes are available: 1 node(s) had untolerated taint {node-role.kubernetes.io/control-plane: }. preemption: 0/1 nodes are available: 1 Preemption is not helpful for scheduling.
Normal Scheduled 44s default-scheduler Successfully assigned default/prometheus-698c56bdb8-hqnx9 to lfs
Warning FailedCreatePodSandBox 43s kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "d034dcaed0911374218a89637905e7bcda4c32636d4555fbe9a3413c7a8f80b3": failed to find network info for sandbox "d034dcaed0911374218a89637905e7bcda4c32636d4555fbe9a3413c7a8f80b3"
Warning FailedCreatePodSandBox 28s kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "52dbba78cb8cd9c750bd2bcc71dae23be9fb2ef4846f44fe3a16a08bb37aa7c5": failed to find network info for sandbox "52dbba78cb8cd9c750bd2bcc71dae23be9fb2ef4846f44fe3a16a08bb37aa7c5"
Warning FailedCreatePodSandBox 16s kubelet Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "9f8d47bde9736cb5ff97ed7c5613a4e4bcd7a243ee2d2bd5cee50339ec9890c7": failed to find network info for sandbox "9f8d47bde9736cb5ff97ed7c5613a4e4bcd7a243ee2d2bd5cee50339ec9890c7"

chrispokorni

Hi @wiseoak,

I would recommend removing the second taint found on the control plane node with the following command:

kubectl taint nodes --all node-role.kubernetes.io/control-plane-

This taint can be found on clusters running Kubernetes version 1.24, that was recently released. This change, together with a few other critical changes, are impacting the installation steps which consistently worked for quite some time now.

Regards,
-Chris