[SEBA-154]

Enable KafkaLogHandler for XOS core/services
Reduce restarts of logstash
Values file for kafka on persistent storage

Change-Id: I631472ba1433ba195d1e2fec304a3193c29a81a9
diff --git a/examples/kafka-production.yaml b/examples/kafka-production.yaml
new file mode 100644
index 0000000..135130b
--- /dev/null
+++ b/examples/kafka-production.yaml
@@ -0,0 +1,41 @@
+---
+# Copyright 2018-present Open Networking Foundation
+#
+# Licensed 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.
+
+# Deploy a production ready Kafka with persistent storage
+#
+# Tested with v0.8.8 of the chart from the helm incubator
+#
+# ex:
+#   helm install -f examples/kafka-production.yaml --version 0.8.8 -n cord-kafka incubator/kafka
+
+# ref: https://kafka.apache.org/documentation/#configuration
+
+configurationOverrides:
+  "offsets.topic.replication.factor": 3
+  "log.retention.hours": 4
+
+replicas: 3
+
+persistence:
+  enabled: true
+  storageClass: "local-ssd"
+  size: "10Gi"
+
+zookeeper:
+  replicaCount: 3
+  persistence:
+    enabled: true
+    storageClass: "local-hdd"
+    size: "10Gi"
diff --git a/examples/kafka-single.yaml b/examples/kafka-single.yaml
index dc6653b..210dfd0 100644
--- a/examples/kafka-single.yaml
+++ b/examples/kafka-single.yaml
@@ -20,10 +20,12 @@
 # ex:
 #   helm install -f examples/kafka-single.yaml --version 0.8.8 -n cord-kafka incubator/kafka
 
-replicas: 1
-
+# ref: https://kafka.apache.org/documentation/#configuration
 configurationOverrides:
   "offsets.topic.replication.factor": 1
+  "log.retention.hours": 4
+
+replicas: 1
 
 persistence:
   enabled: false
diff --git a/examples/kafka-topic.yaml b/examples/kafka-topic.yaml
deleted file mode 100644
index 4bb9b3a..0000000
--- a/examples/kafka-topic.yaml
+++ /dev/null
@@ -1,19 +0,0 @@
----
-
-# Copyright 2018-present Open Networking Foundation
-#
-# Licensed 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.
-
-topics:
-  - name: "onu.events"
-  - name: "authentication.events"
\ No newline at end of file