Use instance_prefix in hostnames instead of hardcoding to kafka

Author: bluesmoon

apps/manual-kafka-cluster/provision.yml

@@ -103,9 +103,9 @@
         kafka_data:
           server:
             {%- for count in range(cluster_size) %}
-            - kafka{{ count + 1 }}:
+            - name: {{instance_prefix}}{{ count + 1 }}
               instance:
-                hostname: kafka{{ count + 1 }}{% if domain_name|d(False) and domain_info %}.{{ domain_name }}{% endif %}
+                hostname: {{instance_prefix}}{{ count + 1 }}{% if domain_name|d(False) and domain_info %}.{{ domain_name }}{% endif %}
                 ip_pub1: {{ info.results[count].instance.ipv4[0] }}
                 ip_priv1: {{ info.results[count].instance.ipv4[1] }}
             {%- endfor %}

apps/manual-kafka-cluster/roles/kafka/tasks/hostname.yml

@@ -8,7 +8,7 @@
     block: |
       #jinja2: trim_blocks:False
       {%- for count in range(cluster_size) %}
-      {{ kafka_data.server[count].instance.ip_priv1 }} {{ kafka_data.server[count].instance.hostname }} {{ instance_prefix }}{{ count+1 }}
+      {{ kafka_data.server[count].instance.ip_priv1 }} {{ kafka_data.server[count].instance.hostname }} {{ kafka_data.server[count].name }}
       {%- endfor %}
 
 - name: configure hostnames