Clarifies a gotcha: to mount config with log4j.properties ...

you must use /opt/kafka/config, due to how log4j.properites
(sometimes tools- or connect-) are resolved by the ./bin scripts.

See solsson/dockerfiles#10

Author: solsson

50kafka.yml

@@ -30,6 +30,8 @@ spec:
       - name: broker
         image: solsson/kafka:0.11.0.0@sha256:e0dec6aa1f376bd374a6ca5863b783d01703acf1f71c0c4441a217a7bd80dfbc
         env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/opt/kafka/config/log4j.properties
         - name: JMX_PORT
           value: "5555"
         ports:
@@ -39,7 +41,7 @@ spec:
         - -c
         - >
           ./bin/kafka-server-start.sh
-          config/server.properties
+          ./config/server.properties
           --override zookeeper.connect=zookeeper:2181
           --override log.retention.hours=-1
           --override log.dirs=/var/lib/kafka/data/topics

zookeeper/50pzoo.yml

@@ -39,6 +39,8 @@ spec:
       - name: zookeeper
         image: solsson/kafka:0.11.0.0@sha256:e0dec6aa1f376bd374a6ca5863b783d01703acf1f71c0c4441a217a7bd80dfbc
         env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/opt/kafka/config/log4j.properties
         - name: JMX_PORT
           value: "5555"
         command:

zookeeper/51zoo.yml

@@ -39,6 +39,8 @@ spec:
       - name: zookeeper
         image: solsson/kafka:0.11.0.0@sha256:e0dec6aa1f376bd374a6ca5863b783d01703acf1f71c0c4441a217a7bd80dfbc
         env:
+        - name: KAFKA_LOG4J_OPTS
+          value: -Dlog4j.configuration=file:/opt/kafka/config/log4j.properties
         - name: JMX_PORT
           value: "5555"
         command: