update kafka, add 2.1.1, 2.2.0, update README

kafka/2.1.0/README.md

@@ -1,4 +1,33 @@
-TBD
+# deploy kafka with docker
+
+## docker swarm
+
+```bash
+docker service create \
+	--name kafka_1 \
+	--hostname=kafka_1 \
+	--network swarm-net \
+	--replicas 1 \
+	--detach=true \
+	--env BROKER_ID=1 \
+	--env ZOOKEEPER_CONNECT=zookeeper_node1:2181,zookeeper_node2:2181,zookeeper_node3:2181 \
+	--endpoint-mode dnsrr \
+	newnius/kafka:2.1.0
+```
+
+## Configuration
+
+### By environment variable
+
+Currently, properties below are supported.
+
+| env | file | property |
+| --- | --- | --- |
+| BROKER_ID | server.properties | broker.id |
+| ZOOKEEPER_CONNECT | server.properties | zookeeper.connect |
+
+
+### By configuration file
 
 ```bash
 docker service create \
@@ -8,5 +37,7 @@ docker service create \
 	--detach=true \
 	--replicas 1 \
 	--endpoint-mode dnsrr \
+	--mount type=bind,src=/data/kafka/,dst=/config/kafka/,readonly \
 	newnius/kafka:2.1.0
 ```
+