Added deployment of snapshotter to example deploy script

Having snapshotter deployed makes the example hostpath deployment
more complete by also showing how to do snapshotting with it.
Snapshotter pod gets similar pod-affinity as were added in previously
made deployment change commit.

Author: okartau

README.md

@@ -28,12 +28,18 @@ clusterrole.rbac.authorization.k8s.io/external-attacher-runner created
 clusterrolebinding.rbac.authorization.k8s.io/csi-attacher-role created
 role.rbac.authorization.k8s.io/external-attacher-cfg created
 rolebinding.rbac.authorization.k8s.io/csi-attacher-role-cfg created
+serviceaccount/csi-snapshotter created
+clusterrole.rbac.authorization.k8s.io/external-snapshotter-runner created
+clusterrolebinding.rbac.authorization.k8s.io/csi-snapshotter-role created
 deploying hostpath components
 service/csi-hostpath-attacher created
 statefulset.apps/csi-hostpath-attacher created
 statefulset.apps/csi-hostpathplugin created
 service/csi-hostpath-provisioner created
 statefulset.apps/csi-hostpath-provisioner created
+deploying snapshotter
+service/csi-hostpath-snapshotter created
+statefulset.apps/csi-hostpath-snapshotter created
 ```
 
 The script can also install CRDs that are needed for alpha features,
@@ -50,6 +56,7 @@ $ kubectl get pods
 NAME                         READY   STATUS    RESTARTS   AGE
 csi-hostpath-attacher-0      1/1     Running   0          5m47s
 csi-hostpath-provisioner-0   1/1     Running   0          5m47s
+csi-hostpath-snapshotter-0   1/1     Running   0          5m47s
 csi-hostpathplugin-0         2/2     Running   0          5m45s
 ```
 

deploy/deploy-hostpath.sh

@@ -23,6 +23,7 @@ BASE_DIR=$(dirname "$0")
 K8S_RELEASE=${K8S_RELEASE:-"release-1.13"}
 PROVISIONER_RELEASE=${PROVISIONER_RELEASE:-$(image_version "${BASE_DIR}/hostpath/csi-hostpath-provisioner.yaml" csi-provisioner)}
 ATTACHER_RELEASE=${ATTACHER_RELEASE:-$(image_version "${BASE_DIR}/hostpath/csi-hostpath-attacher.yaml" csi-attacher)}
+SNAPSHOTTER_RELEASE=${SNAPSHOTTER_RELEASE:-$(image_version "${BASE_DIR}/snapshotter/csi-hostpath-snpshotter.yaml" csi-snapshotter)}
 INSTALL_CRD=${INSTALL_CRD:-"false"}
 
 # apply CSIDriver and CSINodeInfo API objects
@@ -36,7 +37,12 @@ fi
 echo "applying RBAC rules"
 kubectl apply -f https://raw.githubusercontent.com/kubernetes-csi/external-provisioner/${PROVISIONER_RELEASE}/deploy/kubernetes/rbac.yaml
 kubectl apply -f https://raw.githubusercontent.com/kubernetes-csi/external-attacher/${ATTACHER_RELEASE}/deploy/kubernetes/rbac.yaml
+kubectl apply -f https://raw.githubusercontent.com/kubernetes-csi/external-snapshotter/${SNAPSHOTTER_RELEASE}/deploy/kubernetes/rbac.yaml
 
 # deploy hostpath plugin and registrar sidecar
 echo "deploying hostpath components"
 kubectl apply -f ${BASE_DIR}/hostpath
+
+# deploy snapshotter
+echo "deploying snapshotter"
+kubectl apply -f ${BASE_DIR}/snapshotter

deploy/snapshotter/csi-hostpath-snpshotter.yaml

@@ -27,10 +27,20 @@ spec:
       labels:
         app: csi-hostpath-snapshotter
     spec:
+      affinity:
+        podAffinity:
+          requiredDuringSchedulingIgnoredDuringExecution:
+          - labelSelector:
+              matchExpressions:
+              - key: app
+                operator: In
+                values:
+                - csi-hostpathplugin
+            topologyKey: kubernetes.io/hostname
       serviceAccount: csi-snapshotter
       containers:
         - name: csi-snapshotter
-          image: quay.io/k8scsi/csi-snapshotter:v0.4.1
+          image: quay.io/k8scsi/csi-snapshotter:v1.0.1
           args:
             - "--csi-address=$(ADDRESS)"
             - "--connection-timeout=15s"