update documentation on k8s

docs/k3s.md

@@ -1,41 +0,0 @@
-# Kubernetes
-
-## Creating an admin certificate for k3s
-
-Create the admin's private key:
-```
-openssl genpkey -algorithm ed25519 -out <username>-key.pem
-```
-
-Create a CSR for the admin:
-```
-openssl req -new -key <username>-key.pem -out <username>.csr -subj "/CN=<username>"
-```
-
-Create a Kubernetes CSR object on the cluster:
-```
-k3s kubectl create -f - <<EOF
-apiVersion: certificates.k8s.io/v1
-kind: CertificateSigningRequest
-metadata:
-  name: <username>-csr
-spec:
-  request: $(cat <username>.csr | base64 | tr -d '\n')
-  expirationSeconds: 307584000 # 10 years
-  signerName: kubernetes.io/kube-apiserver-client
-  usages:
-    - digital signature
-    - key encipherment
-    - client auth
-EOF
-```
-
-Approve and sign the admin's CSR:
-```
-k3s kubectl certificate approve <username>-csr
-```
-
-Extract the resulting signed certificate from the CSR object:
-```
-k3s kubectl get csr <username>-csr -o jsonpath='{.status.certificate}' | base64 --decode > <username>.crt
-```