First hetzner changes

k8s/README.md

@@ -83,10 +83,14 @@ $ kubectl delete -f kuard
 
 Update with the follwoing command. Chart can be found [here](https://github.com/openebs/charts/tree/master/charts/openebs).
 
+Pitfal:
+* On fresh installation: activate *ndmOperator*, so that CRDs are correctly installed. It may be deactivated afterwards.
+
 ```sh
 helm repo add openebs https://openebs.github.io/charts
 helm repo update
-helm upgrade --install -f openebs/openebs.yml openebs --namespace openebs openebs/openebs
+helm upgrade --install --create-namespace -f openebs/openebs.yml openebs --namespace openebs openebs/openebs
+k apply -f openebs/storageclass.yml
 ```
 
 ## minio
@@ -118,7 +122,8 @@ kubectl delete ns velero
 A backup may be created using:
 
 ```sh
-velero backup create full-backup --default-volumes-to-restic --include-namespaces datalab,development,nextcloud,tt-rss,zebrium --wait
+DATE=$( date +%Y%m%d )
+velero backup create $DATE --default-volumes-to-restic --include-namespaces datalab,development,nextcloud,tt-rss,zebrium --wait
 ```
 
 ## Add private docker registry
@@ -129,7 +134,7 @@ USER='moritz'
 PASSWORD='xxx'
 docker run --entrypoint htpasswd --rm registry:2 -Bbn $USER $PASSWORD
 # #
-helm upgrade --install docker-registry stable/docker-registry -n development -f development/registry.secret.yaml
+helm upgrade --install --create-namespace docker-registry stable/docker-registry -n development -f development/registry.secret.yaml
 ##kubectl apply -f development/registry.secret.yaml
 ```
 
@@ -198,8 +203,19 @@ EOF
 
 ## metrics-server
 
+Getting resources (was already done):
+
 ```sh
-helm upgrade --install -f kube-system/metrics-server.yaml metrics-server -n kube-system stable/metrics-server
+cd kube-system
+curl -L -o metrics-server.yml https://github.com/kubernetes-sigs/metrics-server/releases/latest/download/components.yaml
+# add parameters to deployment:
+#           - --kubelet-preferred-address-types=InternalIP
+#           - --v=2
+#           - --kubelet-insecure-tls
+```
+
+```sh
+kubectl apply -n kube-system -f kube-system/metrics-server.yml
 ```
 
 ## rstudio