alpine-kafka
This image is the kafka base. It comes from alpine-jvm8.
Build
docker build -t rawmind/alpine-kafka:<version> .
Versions
0.10.0.1-1(Dockerfile)0.10.0.0-7(Dockerfile)0.9.0.1-2(Dockerfile)
Configuration
This image runs kafka with monit. Kafka is started with user and group "kafka".
Besides, you can customize the configuration in several ways:
Default Configuration
kafka is installed with the default configuration and some parameters can be overrided with env variables:
- KAFKA_HEAP_OPTS=${JVMFLAGS:-"-Xmx1G -Xms1G"} # Kafka memory value
- KAFKA_ADVERTISE_PORT=${KAFKA_ADVERTISE_PORT:-"9092"} # Port to advertise
- KAFKA_LISTENER=${KAFKA_LISTENER:-"PLAINTEXT://0.0.0.0:${KAFKA_ADVERTISE_PORT}"} # Listerner string
- KAFKA_DELETE_TOPICS=${KAFKA_DELETE_TOPICS:-"false"} # Enable kafka delete topics
- KAFKA_LOG_DIRS=${KAFKA_LOG_DIRS:-"${SERVICE_HOME}/logs"} # Log directories.
- KAFKA_LOG_RETENTION_HOURS=${KAFKA_LOG_RETENTION_HOURS:-"168"} # Log retention hours
- KAFKA_NUM_PARTITIONS=${KAFKA_NUM_PARTITIONS:-"1"} # Number of partitions
- KAFKA_ZK_HOST=${KAFKA_ZK_HOST:-"127.0.0.1"} # Zk host
- KAFKA_ZK_PORT=${KAFKA_ZK_PORT:-"2181"} # Zk port
- KAFKA_EXT_IP=${KAFKA_EXT_IP:-""} # Advertise external ip or name if value != ""
Custom Configuration
Kafka is installed under /opt/kafka and make use of /opt/kafka/config/server.properties.
You can edit this files in order customize configuration
You could also include FROM rawmind/alpine-kafka at the top of your Dockerfile, and add your custom config.
Rancher
If you are running it in rancher, you could run rancher-kafka as a sidekick to get dynamic configuration.
k8s
If you are running it in k8s, you could run k8s-kafka at the same pod to get dynamic configuration.
Example
See rancher-example, that run kafka in a rancher system with dynamic configuration.