cleanup

README.md

@@ -9,7 +9,6 @@
 * [Namespaces and resource limits](#namespaces-limits)
 * [Persistent volumes (StorageClass - dynamic provisioning)](#pv)
   * [Rancher Local (k3s default)](#pv-local)
-  * [NFS](#pv-nfs)
   * [Rancher Longhorn (distributed in local cluster) - MY FAVOURITE :-)](#pv-longhorn)
     * [Custom StorageClass](#pv-longhorn-custom-storageclass)
     * [Volume backups with S3 (compatible) storage](#pv-longhorn-s3-backup)
@@ -187,60 +186,6 @@ Read more about [AccessModes](https://kubernetes.io/docs/concepts/storage/persis
 https://rancher.com/docs/k3s/latest/en/storage/  
 Only supports *AccessMode*: ReadWriteOnce (RWO)
 
-## NFS <a name="user-content-pv-nfs"></a>
-For testing purposes as well as simplicity you may use following [NFS container image](https://hub.docker.com/r/itsthenetwork/nfs-server-alpine):
-```
-mkdir -p 
-docker run -d --name nfs-server \
-  --net=host \
-  --privileged \
-  -v /data/docker/nfs-server/data/:/nfsshare \
-  -e SHARED_DIRECTORY=/nfsshare \
-  itsthenetwork/nfs-server-alpine:latest
-```
-
-**All Nodes need to have the NFS-client package (Ubuntu: `nfs-common`) installed**
-```
-helm repo add ckotzbauer https://ckotzbauer.github.io/helm-charts
-helm install my-nfs-client-provisioner --set nfs.server=<nfs-server/ip-addr> --set nfs.path=</data/nfs> ckotzbauer/nfs-client-provisioner
-```
-Check if NFS *StorageClass* is available:
-```
-$ kubectl get sc
-NAME                   PROVISIONER                               RECLAIMPOLICY   VOLUMEBINDINGMODE      ALLOWVOLUMEEXPANSION   AGE
-local-path (default)   rancher.io/local-path                     Delete          WaitForFirstConsumer   false                  101d
-nfs-client             cluster.local/my-nfs-client-provisioner   Delete          Immediate              true                   172m
-```
-Now you can use `nfs-client` as StorageClass like so:
-```
-apiVersion: apps/v1
-kind: StatefulSet
-[...]
-  volumeClaimTemplates:
-  - metadata:
-      name: nfs-backend
-    spec:
-      accessModes: [ "ReadWriteMany" ]
-      storageClassName: "nfs-client"
-      resources:
-        requests:
-          storage: 32Mi
-```
-or so:
-```
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: nfs-pvc-1
-  namespace: <blubb>
-spec:
-  storageClassName: "nfs-client"
-  accessModes:
-    - ReadWriteMany
-  resources:
-    requests:
-      storage: 32Mi
-```
 ## Rancher Longhorn (distributed in local cluster) - MY FAVOURITE :-) <a name="user-content-pv-longhorn"></a>
 * Requirements: https://longhorn.io/docs/0.8.0/install/requirements/
   * Debian/Ubuntu: `apt install open-iscsi`
@@ -779,67 +724,6 @@ spec:
         imagePullPolicy: IfNotPresent
         command: ["nc", "-lk", "-p", "23456", "-v", "-e", "/bin/true"]
 ```
-## Running StatefulSet with NFS storage <a name="user-content-running-statefulset-nfs"></a>
-* [Docs: StatefulSet](https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/)
-* [NFS dynamic volume provisioning deployed](#pv-nfs)
-
-StatefulSets are designed for stateful applications (like databases). To avoid split-brain scenarios StatefulSets behave as static as possible. If a node goes down, the StatefulSet controller will reschedule the pods to another node, that meets the required conditions! If you want to force a re-scheduling:  
-`kubectl delete pod web-1 --grace-period=0 --force`
-
-More details on this can be found [here](https://kubernetes.io/docs/tasks/run-application/force-delete-stateful-set-pod/)
-
-If you want DaemonSet-like Node-affinity with StatefulSets then read [this](https://medium.com/@johnjjung/building-a-kubernetes-daemonstatefulset-30ad0592d8cb)
-```
----
-apiVersion: v1
-kind: Service
-metadata:
-  name: nginx
-  labels:
-    app: nginx
-spec:
-  ports:
-  - port: 80
-    name: web
-  clusterIP: None
-  selector:
-    app: nginx
----
-apiVersion: apps/v1
-kind: StatefulSet
-metadata:
-  name: web
-spec:
-  selector:
-    matchLabels:
-      app: nginx
-  serviceName: "nginx"
-  replicas: 2
-  template:
-    metadata:
-      labels:
-        app: nginx
-    spec:
-      terminationGracePeriodSeconds: 10
-      containers:
-      - name: nginx
-        image: nginx:alpine
-        ports:
-        - containerPort: 80
-          name: web
-        volumeMounts:
-        - name: nfs-backend
-          mountPath: /nfs-backend
-  volumeClaimTemplates:
-  - metadata:
-      name: nfs-backend
-    spec:
-      accessModes: [ "ReadWriteMany" ]
-      storageClassName: "nfs-client"
-      resources:
-        requests:
-          storage: 32Mi
-```
 
 ## Services <a name="user-content-services"></a>
 ### Client-IP transparency and loadbalancing <a name="user-content-services-client-ip-transparency"></a>