HDDS-1668. Add liveness probe to the example k8s resources files

Author: elek

hadoop-ozone/dist/src/main/k8s/definitions/ozone/om-ss.yaml

@@ -38,18 +38,17 @@ spec:
     spec:
       securityContext:
         fsGroup: 1000
-      initContainers:
-      - name: init
-        image: "@docker.image@"
-        args: ["ozone","om","--init"]
-        env:
-        - name: WAITFOR
-          value: scm-0.scm:9876
       containers:
       - name: om
         image: "@docker.image@"
         args: ["ozone","om"]
         env:
         - name: WAITFOR
           value: scm-0.scm:9876
+        - name: ENSURE_OM_INITIALIZED
+          value: /data/metadata/om/current/VERSION
+        livenessProbe:
+          tcpSocket:
+            port: 9862
+          initialDelaySeconds: 30
       volumes: []

hadoop-ozone/dist/src/main/k8s/definitions/ozone/s3g-ss.yaml

@@ -36,3 +36,8 @@ spec:
       - name: s3g
         image: "@docker.image@"
         args: ["ozone","s3g"]
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 9878
+          initialDelaySeconds: 30

hadoop-ozone/dist/src/main/k8s/definitions/ozone/scm-ss.yaml

@@ -46,3 +46,7 @@ spec:
       - name: scm
         image: "@docker.image@"
         args: ["ozone","scm"]
+        livenessProbe:
+          tcpSocket:
+            port: 9861
+          initialDelaySeconds: 30

hadoop-ozone/dist/src/main/k8s/examples/minikube/datanode-statefulset.yaml

@@ -55,12 +55,12 @@ spec:
         args:
         - ozone
         - datanode
-        envFrom:
-        - configMapRef:
-            name: config
         volumeMounts:
         - name: data
           mountPath: /data
+        envFrom:
+        - configMapRef:
+            name: config
       volumes:
       - name: data
         emptyDir: {}

hadoop-ozone/dist/src/main/k8s/examples/minikube/om-statefulset.yaml

@@ -39,37 +39,27 @@ spec:
     spec:
       securityContext:
         fsGroup: 1000
-      initContainers:
-      - name: init
+      containers:
+      - name: om
         image: '@docker.image@'
         args:
         - ozone
         - om
-        - --init
         env:
         - name: WAITFOR
           value: scm-0.scm:9876
-        envFrom:
-        - configMapRef:
-            name: config
+        - name: ENSURE_OM_INITIALIZED
+          value: /data/metadata/om/current/VERSION
+        livenessProbe:
+          tcpSocket:
+            port: 9862
+          initialDelaySeconds: 30
         volumeMounts:
         - name: data
           mountPath: /data
-      containers:
-      - name: om
-        image: '@docker.image@'
-        args:
-        - ozone
-        - om
-        env:
-        - name: WAITFOR
-          value: scm-0.scm:9876
         envFrom:
         - configMapRef:
             name: config
-        volumeMounts:
-        - name: data
-          mountPath: /data
       volumes:
       - name: data
         emptyDir: {}

hadoop-ozone/dist/src/main/k8s/examples/minikube/s3g-statefulset.yaml

@@ -39,12 +39,17 @@ spec:
         args:
         - ozone
         - s3g
-        envFrom:
-        - configMapRef:
-            name: config
+        livenessProbe:
+          httpGet:
+            path: /
+            port: 9878
+          initialDelaySeconds: 30
         volumeMounts:
         - name: data
           mountPath: /data
+        envFrom:
+        - configMapRef:
+            name: config
       volumes:
       - name: data
         emptyDir: {}

hadoop-ozone/dist/src/main/k8s/examples/minikube/scm-statefulset.yaml

@@ -46,24 +46,28 @@ spec:
         - ozone
         - scm
         - --init
-        envFrom:
-        - configMapRef:
-            name: config
         volumeMounts:
         - name: data
           mountPath: /data
+        envFrom:
+        - configMapRef:
+            name: config
       containers:
       - name: scm
         image: '@docker.image@'
         args:
         - ozone
         - scm
-        envFrom:
-        - configMapRef:
-            name: config
+        livenessProbe:
+          tcpSocket:
+            port: 9861
+          initialDelaySeconds: 30
         volumeMounts:
         - name: data
           mountPath: /data
+        envFrom:
+        - configMapRef:
+            name: config
       volumes:
       - name: data
         emptyDir: {}

hadoop-ozone/dist/src/main/k8s/examples/ozone-csi/Flekszible

@@ -21,5 +21,6 @@ import:
   - path: ozone
     transformations:
       - type: ozone/csi
+      - type: ozone/emptydir
   - path: pv-test
     destination: pv-test

hadoop-ozone/dist/src/main/k8s/examples/ozone-csi/datanode-daemonset.yaml

@@ -44,12 +44,16 @@ spec:
         ports:
         - containerPort: 9870
           name: rpc
-        envFrom:
-        - configMapRef:
-            name: config
+        livenessProbe:
+          tcpSocket:
+            port: 9858
+          initialDelaySeconds: 30
         volumeMounts:
         - name: data
           mountPath: /data
+        envFrom:
+        - configMapRef:
+            name: config
       initContainers: []
       volumes:
       - name: data

hadoop-ozone/dist/src/main/k8s/examples/ozone-csi/datanode-service.yaml

@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: datanode
+spec:
+  ports:
+  - port: 9870
+    name: rpc
+  clusterIP: None
+  selector:
+    app: ozone
+    component: datanode