Adding optional config for tls enabled loadbalancer. Refactoring test README

Author: mtarng

config/tlsloadbalancer.yaml

@@ -0,0 +1,5 @@
+config:
+subcomponents:
+  kafka-cluster:
+    config:
+      externalLoadBalancerTls: true

helm-chart/kafka-cluster/templates/kafka-cluster.yaml

@@ -31,7 +31,7 @@ spec:
     listeners:
       external:
         type: loadbalancer
-        tls: false # by default true
+        tls: {{ .Values.externalLoadBalancerTls }}
       plain:
         networkPolicyPeers:
         - podSelector:

helm-chart/kafka-cluster/values.yaml

@@ -2,4 +2,6 @@
 # This is a YAML-formatted file.
 # Declare variables to be passed into your templates.
 
+externalLoadBalancerTls: false
+
 kafkaLogDirs: /var/lib/kafka/data-0

test/README.md

@@ -35,15 +35,6 @@ Run the testing script as configured below:
 The script will deploy a test topic and connect to the brokers through the external loadbalancer IP, utilizing kafkacat as a producer and consumer.
 The test results will displayed at the end. The script with exit with code 0 for success and 1 for failure.
 
-## Liveness Check from Outside the cluster - with TLS enabled
-### Test Requirements
-- `kubectl` should be configured to point to this cluster
-- The Kafka deployment should be configured with an external loadbalancer listener.
-  - [Reference Guide](https://strimzi.io/2019/05/13/accessing-kafka-part-4.html)
-  - External LoadBalancer needs to have TLS enabled
-- `kafkacat` needs to be installed and added to $PATH
-  - [Kafkacat Installation](https://github.com/edenhill/kafkacat#install)
-
 # Replication
 
 A sample configuration for mirror maker is included with the repo. Upload the destination cluster's certificate into a secret called `mirrormaker-cluster-ca-cert` in the `kafka` namespace, and add the IP address of the destination cluster's broker into `mirror-maker.yaml`. You will also need to create a KafkaUser for the second cluster in order to authenticate Mirror Maker with your cluster. To test out Mirror Maker, run ./test/mirror-maker.sh to set up clients within the Kafka namespace authenticated with mutual TLS authentication. You can then test out replication by using the kafkaclient pods: