Upgraded master node to 1.24.2 but now cannot connect

General Discussions
1

Asking for help? Comment out what you need so we can get more information to help you!

Cluster information:

Kubernetes version: 1.24.2
Cloud being used: (put bare-metal if not on a public cloud) baremetal
Installation method: kubeadm
Host OS: ubuntu 20.04
CNI and version: weave
CRI and version: docker

I upgraded my kubernetes on my master control node to 1.24.2 but now kubectl will not connect.

kubectl cluster-info shows

To further debug and diagnose cluster problems, use ‘kubectl cluster-info dump’.
The connection to the server localhost:8080 was refused - did you specify the right host or port?

root@kubemaster:~# kubectl version -o json
{
“clientVersion”: {
“major”: “1”,
“minor”: “24”,
“gitVersion”: “v1.24.2”,
“gitCommit”: “f66044f4361b9f1f96f0053dd46cb7dce5e990a8”,
“gitTreeState”: “clean”,
“buildDate”: “2022-06-15T14:22:29Z”,
“goVersion”: “go1.18.3”,
“compiler”: “gc”,
“platform”: “linux/amd64”
},
“kustomizeVersion”: “v4.5.4”
}
The connection to the server localhost:8080 was refused - did you specify the right host or port?

also docker ps | grep kube-apiserver does not look like its running

2

Hello,

I had the same issue and it was kubelet upgraded to 1.24.1 that was not starting. (stuck in activating status and keeps restarting)
A workarround that worked for me is to to downgrade kubelet to 1.23.8.

Regards,

3

1.24 dropped support for dockershim, if you want to continue to use docker, you need to use GitHub - Mirantis/cri-dockerd or switch to another container runtime. More info here: https://kubernetes.io/blog/2022/02/17/dockershim-faq/