Merge pull request #13 from onmetal/druid_documentation

Added etcd-druid documentation

docs/usage/druid.md

@@ -0,0 +1,33 @@
+# Etcd Druid
+
+The [etcd-druid](https://github.com/gardener/etcd-druid) is an operator which manages [etcd](https://etcd.io/) deployments inside a Kubernetes cluster.
+
+## Installation
+
+`etcd-druid` can be installed via `helm install` into your Kubernetes cluster. Please make sure you have configured the `helm repo` as described [here](/usage/helm).
+
+```shell
+helm -n onmetal install druid vc/etcd-druid
+```
+
+If you want to overwrite the default `values.yaml` you can do so by providing a custom configuration.
+
+```shell
+helm -n onmetal install druid vc/etcd-druid -f VALUES_DIR/druid-values.yaml
+```
+
+## Upgrade
+
+To upgrade your `etcd-druid` deployment run:
+
+```shell
+helm -n onmetal upgrade druid vc/etcd-druid -f VALUES_DIR/druid-values.yaml
+```
+
+## Remove
+
+To remove the installation run:
+
+```shell
+helm -n onmetal delete druid
+```

docs/usage/helm.md

@@ -0,0 +1,26 @@
+# Helm Repository
+
+The `virtual-controlplane` project comes with it's own Helm repository containing all Helm charts necessary to setup a virtual Kubernetes API server. It can be added to your Helm environment via:
+
+```shell
+helm repo add vc https://onmetal.github.io/virtual-controlplane/
+```
+
+To update the Helm repository:
+
+```shell
+helm repo update
+```
+
+You should now be able to see the content of the helm repository via:
+
+```shell
+helm search repo vc
+```
+
+An example output would look like this:
+
+```shell
+NAME         	CHART VERSION	APP VERSION	DESCRIPTION
+vc/etcd-druid	0.1.0        	0.6.0      	Helm chart for etcd-druid.
+```

mkdocs.yml

@@ -37,7 +37,8 @@ markdown_extensions:
 nav:
   - Home: index.md
   - Usage: 
-    - Local Setup: usage/local_setup.md
+    - Helm Repository: usage/helm.md
+    - Etcd Druid: usage/druid.md
   - Developer Guide:
       - Documentation: development/documentation.md
       - Contribution Guide: development/contribution.md