View Certificate Details

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In this section, we will take a look how to view certificates in a kubernetes cluster.

View Certs

To view the details of the certificate

$ openssl x509 -in /etc/kubernetes/pki/apiserver.crt -text -noout

Follow the same procedure to identify information about of all the other certificates

Inspect Server Logs - Hardware setup

Inspect server logs using journalctl
```
$ journalctl -u etcd.service -l
```

Inspect Server Logs - kubeadm setup

View logs using kubectl
```
$ kubectl logs etcd-master
```

View logs using docker ps and docker logs

$ docker ps -a
$ docker logs <container-id>

K8s Reference Docs

https://kubernetes.io/docs/setup/best-practices/certificates/#certificate-paths