Uses actual zookeeper hostnames (see 7790ee0 + 2c05b72),

to simplify troubleshooting in cases like #310 with ephemeral pods

Because of the relation between replica count and container args
we're only doing this on fixed scale variants, not on bases.

Author: solsson

kafka/50kafka.yml

@@ -51,6 +51,10 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.name
+        - name: POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
         - name: CLASSPATH
           value: /opt/kafka/libs/extensions/*
         - name: KAFKA_LOG4J_OPTS

variants/scale-1/kafka-scale1-overrides.json

@@ -1,4 +1,6 @@
 [
+  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
+  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "zookeeper.connect=zoo-0.zoo.$(POD_NAMESPACE).svc.cluster.local:2181" },
   {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
   {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "default.replication.factor=1"},
   {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},

variants/scale-3-3/kafka-zookeeper-connect-only-zoo.json

@@ -1,4 +1,6 @@
 [
   {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
-  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "zookeeper.connect=zoo:2181"}
+  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value":
+    "zookeeper.connect=zoo-0.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-1.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-2.zoo.$(POD_NAMESPACE).svc.cluster.local:2181"
+  }
 ]

variants/scale-6-9/kafka-zookeeper-connect-only-zoo.json

@@ -1,4 +1,6 @@
 [
   {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "--override"},
-  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value": "zookeeper.connect=zoo:2181"}
+  {"op": "add", "path": "/spec/template/spec/containers/0/args/-", "value":
+    "zookeeper.connect=zoo-0.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-1.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-2.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-3.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-4.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-5.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-6.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-7.zoo.$(POD_NAMESPACE).svc.cluster.local:2181,zoo-8.zoo.$(POD_NAMESPACE).svc.cluster.local:2181"
+  }
 ]