Docker Intro

How to get CEP image

You can pull the docker image from our registry:

$ docker pull wizzieio/zz-cep:latest

How to use this image

Cep requires a running Kafka broker before it starts.

Zookeeper

First, start a zookeeper container by executing:

$ docker run --rm --name zookeeper-svc --net=host wurstmeister/zookeeper

You can found more information about wurstmeister/zookeeper image here

Kafka

Now, start a kafka broker container by executing:

$ docker run --rm --name kafka-broker --net=host -e KAFKA_ADVERTISED_HOST_NAME=localhost -e KAFKA_ZOOKEEPER_CONNECT=localhost:2181 -e KAFKA_ADVERTISED_PORT=9092 wurstmeister/kafka:0.10.2.1

You can found more information about wurstmeister/kafka image here

Start Cep

Once kafka broker is up, we can start a Cep container and link it to the kafka broker, and configuring the APPLICATION_ID environment variable with our custom app name:

$ docker run --rm --name my-cep --net=host -e APPLICATION_ID=my-cep-app -e KAFKA_BOOTSTRAP_SERVER=localhost:9092 wizzieio/zz-cep:latest

Now you can follow the base tutorial to test Cep!

Using environment variables in cep configuration

You can configure the docker image using these environment properties:

Env Property Description Default Value
APPLICATION_ID This id is used to identify a group of cep instances null
KAFKA_BOOTSTRAP_SERVER Kafka servers list null
METRIC_ENABLE Enable the metrics true
METRIC_INTERVAL The interval time to report metrics (milliseconds) 60000

You can found more information about base configuration here