Liveness & Readiness issue in clear installation

General Discussions
1

Cluster information:

Kubernetes version:
bare-metal installation
Installation method:
Host OS: Ubuntu 20.04
kubectl: v1.20.8
calico: v3.14.2
calico/cni: v3.14.2
In kube-apiserver

│ I0702 08:29:20.246489       1 client.go:360] parsed scheme: "passthrough"                                                                  │
│ I0702 08:29:20.246532       1 passthrough.go:48] ccResolverWrapper: sending update to cc: {[{https://127.0.0.1:2379  <nil> 0 <nil>}] <nil> │
│ I0702 08:29:20.246541       1 clientconn.go:948] ClientConn switching balancer to "pick_first"

│ Events:                                                                                                                                    │
│   Type     Reason     Age                 From     Message                                                                                 │
│   ----     ------     ----                ----     -------                                                                                 │
│   Warning  Unhealthy  51m (x4 over 56m)   kubelet  Liveness probe failed: HTTP probe failed with statuscode: 500                           │
│   Warning  Unhealthy  50m (x13 over 56m)  kubelet  Readiness probe failed: HTTP probe failed with statuscode: 500

In etcd-kubem:

│ Events:                                                                                                                                    │
│   Type     Reason     Age   From     Message                                                                                               │
│   ----     ------     ----  ----     -------                                                                                               │
│   Warning  Unhealthy  52m   kubelet  Liveness probe failed: HTTP probe failed with statuscode: 503

Any idea?

2

What’s the kubernetes version and installation method?

3

The version is 1.20.08, Bare metal installation based on kubeadm.

4

I’m pretty short on ideas. I staged a cluster and couldn’t replicate this. What are the steps you followed to set this up?