cp configmap elements over to config volume as configmap vol is RO

Author: lamdor

kafka/10broker-config.yml

@@ -9,6 +9,7 @@ data:
     set -x
 
     KAFKA_BROKER_ID=${HOSTNAME##*-}
+    cp -Lur /etc/kafka-configmap/* /etc/kafka/
     sed -i "s/#init#broker.id=#init#/broker.id=$KAFKA_BROKER_ID/" /etc/kafka/server.properties
 
     LABELS="kafka-broker-id=$KAFKA_BROKER_ID"

kafka/50kafka.yml

@@ -34,8 +34,10 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-        command: ['/bin/bash', '/etc/kafka/init.sh']
+        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
         volumeMounts:
+        - name: configmap
+          mountPath: /etc/kafka-configmap
         - name: config
           mountPath: /etc/kafka
       containers:
@@ -70,9 +72,11 @@ spec:
         - name: data
           mountPath: /var/lib/kafka/data
       volumes:
-      - name: config
+      - name: configmap
         configMap:
           name: broker-config
+      - name: config
+        emptyDir: {}
   volumeClaimTemplates:
   - metadata:
       name: data

zookeeper/10zookeeper-config.yml

@@ -11,6 +11,7 @@ data:
     [ -z "$ID_OFFSET" ] && ID_OFFSET=1
     export ZOOKEEPER_SERVER_ID=$((${HOSTNAME##*-} + $ID_OFFSET))
     echo "${ZOOKEEPER_SERVER_ID:-1}" | tee /var/lib/zookeeper/data/myid
+    cp -Lur /etc/kafka-configmap/* /etc/kafka/
     sed -i "s/server\.$ZOOKEEPER_SERVER_ID\=[a-z0-9.-]*/server.$ZOOKEEPER_SERVER_ID=0.0.0.0/" /etc/kafka/zookeeper.properties
 
   zookeeper.properties: |-

zookeeper/50pzoo.yml

@@ -23,8 +23,10 @@ spec:
       initContainers:
       - name: init-config
         image: solsson/kafka:1.0.1@sha256:1a4689d49d6274ac59b9b740f51b0408e1c90a9b66d16ad114ee9f7193bab111
-        command: ['/bin/bash', '/etc/kafka/init.sh']
+        command: ['/bin/bash', '/etc/kafka-configmap/init.sh']
         volumeMounts:
+        - name: configmap
+          mountPath: /etc/kafka-configmap
         - name: config
           mountPath: /etc/kafka
         - name: data
@@ -61,9 +63,11 @@ spec:
         - name: data
           mountPath: /var/lib/zookeeper/data
       volumes:
-      - name: config
+      - name: configmap
         configMap:
           name: zookeeper-config
+      - name: config
+        emptyDir: {}
   volumeClaimTemplates:
   - metadata:
       name: data