Add statefulset and daemonset samples

Each sample has a:
- workload that can be used later for testing discovered apps
- subscription kustomization that can be used manual testing or with ramen basic-test
- dr kustomization that can be used manually (ramen basic-test generated
  its own drpc)

Unfinished:
- Not test yet
- Need to add dr samples for discovered apps

Signed-off-by: Nir Soffer <[email protected]>

dr/daemonset-k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,6 @@
+---
+namespace: daemonset-rbd
+commonLabels:
+  app: daemonset-rbd
+resources:
+  - ../base

dr/statefulset-k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,6 @@
+---
+namespace: statefulset-rbd
+commonLabels:
+  app: statefulset-rbd
+resources:
+  - ../base

subscription/daemonset-k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,15 @@
+---
+resources:
+  - ../base
+namespace: daemonset-rbd
+commonLabels:
+  app: daemonset-rbd
+patches:
+  # Customize path to application.
+  - target:
+      kind: Subscription
+      name: subscription
+    patch: |-
+      - op: replace
+        path: /metadata/annotations/apps.open-cluster-management.io~1github-path
+        value: workloads/daemonset/k8s-regional-rbd

subscription/statefulset-k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,15 @@
+---
+resources:
+  - ../base
+namespace: statefulset-rbd
+commonLabels:
+  app: statefulset-rbd
+patches:
+  # Customize path to application.
+  - target:
+      kind: Subscription
+      name: subscription
+    patch: |-
+      - op: replace
+        path: /metadata/annotations/apps.open-cluster-management.io~1github-path
+        value: workloads/statefulset/k8s-regional-rbd

workloads/daemonset/base/daemonset.yaml

@@ -0,0 +1,47 @@
+---
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: busybox
+spec:
+  selector:
+    matchLabels:
+      appname: busybox
+  template:
+    metadata:
+      labels:
+        appname: busybox
+    spec:
+      containers:
+        - name: logger
+          image: quay.io/nirsof/busybox:stable
+          imagePullPolicy: IfNotPresent
+          command:
+            - sh
+            - -c
+            - |
+              emit() {
+                  echo "$(date) $1" | tee -a /var/log/ramen.log
+                  sync
+              }
+              trap "emit STOP; exit" TERM
+              emit START
+              while true; do
+                  sleep 10 & wait
+                  emit UPDATE
+              done
+          volumeMounts:
+            - name: varlog
+              mountPath: /var/log
+      volumes:
+        - name: varlog
+          persistentVolumeClaim:
+            claimName: busybox-pvc
+      tolerations:
+        # Run also on control-plane and master nodes.
+        - key: node-role.kubernetes.io/control-plane
+          operator: Exists
+          effect: NoSchedule
+        - key: node-role.kubernetes.io/master
+          operator: Exists
+          effect: NoSchedule

workloads/daemonset/base/kustomization.yaml

@@ -0,0 +1,8 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+commonLabels:
+  appname: busybox
+resources:
+  - pvc.yaml
+  - daemonset.yaml

workloads/daemonset/base/pvc.yaml

@@ -0,0 +1,13 @@
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: busybox-pvc
+spec:
+  accessModes:
+    - ReadWriteOnce
+  # Customize in your overlay.
+  storageClassName: STORAGE_CLASS_NAME
+  resources:
+    requests:
+      storage: 1Gi

workloads/daemonset/k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,11 @@
+---
+resources:
+  - ../base
+patches:
+  - target:
+      kind: PersistentVolumeClaim
+      name: busybox-pvc
+    patch: |-
+      - op: replace
+        path: /spec/storageClassName
+        value: rook-ceph-block

workloads/statefulset/base/kustomization.yaml

@@ -0,0 +1,7 @@
+---
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+commonLabels:
+  appname: busybox
+resources:
+  - statefulset.yaml

workloads/statefulset/base/statefulset.yaml

@@ -0,0 +1,55 @@
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: busybox
+spec:
+  # Required for proper clean up on failover and successful relocate. You
+  # must enable the StatefulSetAutoDeletePVC feature gate for this.
+  # https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#persistentvolumeclaim-retention
+  persistentVolumeClaimRetentionPolicy:
+    whenDeleted: Delete
+    whenScaled: Retain
+  selector:
+    matchLabels:
+      appname: busybox
+  replicas: 2
+  template:
+    metadata:
+      labels:
+        appname: busybox
+    spec:
+      containers:
+        - name: logger
+          image: quay.io/nirsof/busybox:stable
+          imagePullPolicy: IfNotPresent
+          command:
+            - sh
+            - -c
+            - |
+              emit() {
+                  echo "$(date) $1" | tee -a /var/log/ramen.log
+                  sync
+              }
+              trap "emit STOP; exit" TERM
+              emit START
+              while true; do
+                  sleep 10 & wait
+                  emit UPDATE
+              done
+          volumeMounts:
+            - name: varlog
+              mountPath: /var/log
+  volumeClaimTemplates:
+    - metadata:
+        name: varlog
+        labels:
+          appname: busybox
+      spec:
+        accessModes:
+          - ReadWriteOnce
+        # Customize in your overlay.
+        storageClassName: STORAGE_CLASS_NAME
+        resources:
+          requests:
+            storage: 1Gi

workloads/statefulset/k8s-regional-rbd/kustomization.yaml

@@ -0,0 +1,11 @@
+---
+resources:
+  - ../base
+patches:
+  - target:
+      kind: StatefulSet
+      name: busybox
+    patch: |-
+      - op: replace
+        path: /spec/volumeClaimTemplates/0/spec/storageClassName
+        value: rook-ceph-block