Hi there,
(I put this topic here under “Clients”, because I don’t know where else to put it.)
I want to configure a MQTT-Proxy via a Docker container together with the other Confluent stuff (broker, rest-proxy, etc.). The relevant part in my docker-compose.yml looks like this:
kafka-mqtt:
image: confluentinc/cp-kafka-mqtt:latest
depends_on:
- broker
ports:
- "1883:1883"
environment:
KAFKA_MQTT_BOOTSTRAP_SERVERS: PLAINTEXT://broker:29092
KAFKA_MQTT_TOPIC_REGEX_LIST: test:test
KAFKA_MQTT_LISTENERS: 0.0.0.0:1883
KAFKA_MQTT_CONFLUENT_TOPIC_REPLICATION_FACTOR: 1
KAFKA_MQTT_LISTENERS_SECURITY_PROTOCOL: SASL_PLAINTEXT
KAFKA_OPTS: "-Djava.security.auth.login.config=/etc/conf/jaas.conf"
volumes:
- ./configs:/etc/conf
In addition to that I have a jaas.conf:
ConfluentKafkaMqtt {
io.confluent.mqtt.protocol.security.PropertyFileLoginModule required
file="/etc/conf/credentials.txt";
};
As well as a (very secure) credentials.txt:
test=test
My setup has worked before I added the security/jaas things, so it must be something with it.
When trying to connect to MQTT Proxy the connection is refused. The logs for the kafka-container give me the following error:
javax.security.auth.login.LoginException: No LoginModules configured for ConfluentKafkaMqtt
So it doesn’t seem to find my jaas.conf. (?)
It is in the container however - I checked that. So what’s the problem here?
Help would be very much appreciated 
Hi Michael,
here is the entire long .yml:
---
version: '2'
services:
zookeeper:
image: confluentinc/cp-zookeeper:6.2.0
hostname: zookeeper
container_name: zookeeper
ports:
- "2181:2181"
environment:
ZOOKEEPER_CLIENT_PORT: 2181
ZOOKEEPER_TICK_TIME: 2000
broker:
image: confluentinc/cp-server:6.2.0
hostname: broker
container_name: broker
depends_on:
- zookeeper
ports:
- "9092:9092"
- "9101:9101"
environment:
KAFKA_BROKER_ID: 1
KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:29092,PLAINTEXT_HOST://localhost:9092
KAFKA_METRIC_REPORTERS: io.confluent.metrics.reporter.ConfluentMetricsReporter
KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
KAFKA_CONFLUENT_LICENSE_TOPIC_REPLICATION_FACTOR: 1
KAFKA_CONFLUENT_BALANCER_TOPIC_REPLICATION_FACTOR: 1
KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
KAFKA_JMX_PORT: 9101
KAFKA_JMX_HOSTNAME: localhost
KAFKA_CONFLUENT_SCHEMA_REGISTRY_URL: http://schema-registry:8081
CONFLUENT_METRICS_REPORTER_BOOTSTRAP_SERVERS: broker:29092
CONFLUENT_METRICS_REPORTER_TOPIC_REPLICAS: 1
CONFLUENT_METRICS_ENABLE: 'true'
CONFLUENT_SUPPORT_CUSTOMER_ID: 'anonymous'
schema-registry:
image: confluentinc/cp-schema-registry:6.2.0
hostname: schema-registry
container_name: schema-registry
depends_on:
- broker
ports:
- "8081:8081"
environment:
SCHEMA_REGISTRY_HOST_NAME: schema-registry
SCHEMA_REGISTRY_KAFKASTORE_BOOTSTRAP_SERVERS: 'broker:29092'
SCHEMA_REGISTRY_LISTENERS: http://0.0.0.0:8081
connect:
image: cnfldemos/cp-server-connect-datagen:0.5.0-6.2.0
hostname: connect
container_name: connect
depends_on:
- broker
- schema-registry
ports:
- "8083:8083"
environment:
CONNECT_BOOTSTRAP_SERVERS: 'broker:29092'
CONNECT_REST_ADVERTISED_HOST_NAME: connect
CONNECT_REST_PORT: 8083
CONNECT_GROUP_ID: compose-connect-group
CONNECT_CONFIG_STORAGE_TOPIC: docker-connect-configs
CONNECT_CONFIG_STORAGE_REPLICATION_FACTOR: 1
CONNECT_OFFSET_FLUSH_INTERVAL_MS: 10000
CONNECT_OFFSET_STORAGE_TOPIC: docker-connect-offsets
CONNECT_OFFSET_STORAGE_REPLICATION_FACTOR: 1
CONNECT_STATUS_STORAGE_TOPIC: docker-connect-status
CONNECT_STATUS_STORAGE_REPLICATION_FACTOR: 1
CONNECT_KEY_CONVERTER: org.apache.kafka.connect.storage.StringConverter
CONNECT_VALUE_CONVERTER: io.confluent.connect.avro.AvroConverter
CONNECT_VALUE_CONVERTER_SCHEMA_REGISTRY_URL: http://schema-registry:8081
# CLASSPATH required due to CC-2422
CLASSPATH: /usr/share/java/monitoring-interceptors/monitoring-interceptors-6.2.0.jar
CONNECT_PRODUCER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringProducerInterceptor"
CONNECT_CONSUMER_INTERCEPTOR_CLASSES: "io.confluent.monitoring.clients.interceptor.MonitoringConsumerInterceptor"
CONNECT_PLUGIN_PATH: "/usr/share/java,/usr/share/confluent-hub-components"
CONNECT_LOG4J_LOGGERS: org.apache.zookeeper=ERROR,org.I0Itec.zkclient=ERROR,org.reflections=ERROR
command:
- bash
- -c
- |
confluent-hub install --no-prompt neo4j/kafka-connect-neo4j:1.0.9 && \
confluent-hub install confluentinc/kafka-connect-mqtt:1.4.1 && \
confluent-hub install --no-prompt confluentinc/kafka-connect-datagen:latest
/etc/confluent/docker/run &
sleep infinity
control-center:
image: confluentinc/cp-enterprise-control-center:6.2.0
hostname: control-center
container_name: control-center
depends_on:
- broker
- schema-registry
- connect
- mqtt
#- ksqldb-server
ports:
- "9021:9021"
environment:
CONTROL_CENTER_BOOTSTRAP_SERVERS: 'broker:29092'
CONTROL_CENTER_CONNECT_CLUSTER: 'connect:8083'
# CONTROL_CENTER_KSQL_KSQLDB1_URL: "http://ksqldb-server:8088"
# CONTROL_CENTER_KSQL_KSQLDB1_ADVERTISED_URL: "http://localhost:8088"
CONTROL_CENTER_SCHEMA_REGISTRY_URL: "http://schema-registry:8081"
CONTROL_CENTER_REPLICATION_FACTOR: 1
CONTROL_CENTER_INTERNAL_TOPICS_PARTITIONS: 1
CONTROL_CENTER_MONITORING_INTERCEPTOR_TOPIC_PARTITIONS: 1
CONFLUENT_METRICS_TOPIC_REPLICATION: 1
PORT: 9021
rest-proxy:
image: confluentinc/cp-kafka-rest:6.2.0
depends_on:
- broker
- schema-registry
ports:
- 8082:8082
hostname: rest-proxy
container_name: rest-proxy
environment:
KAFKA_REST_HOST_NAME: rest-proxy
KAFKA_REST_BOOTSTRAP_SERVERS: 'broker:29092'
KAFKA_REST_LISTENERS: "http://0.0.0.0:8082"
KAFKA_REST_SCHEMA_REGISTRY_URL: 'http://schema-registry:8081'
kafka-mqtt:
image: confluentinc/cp-kafka-mqtt:latest
depends_on:
- broker
ports:
- "1883:1883"
environment:
KAFKA_MQTT_BOOTSTRAP_SERVERS: PLAINTEXT://broker:29092
KAFKA_MQTT_TOPIC_REGEX_LIST: test:test
KAFKA_MQTT_LISTENERS: 0.0.0.0:1883
KAFKA_MQTT_CONFLUENT_TOPIC_REPLICATION_FACTOR: 1
KAFKA_MQTT_LISTENERS_SECURITY_PROTOCOL: SASL_PLAINTEXT
KAFKA_OPTS: "-Djava.security.auth.login.config=/etc/conf/jaas.conf"
volumes:
- ./configs:/etc/conf
Regarding the link your send: This is authentification between MQTT-Proxy and Kafka-Broker. This is not what I’m looking for. Is this needed?
ah sorry my mistake.
will check by myself and come back to you