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Kafka Manager

A tool for managing Apache Kafka.

It supports the following :

  • Manage multiple clusters
  • Easy inspection of cluster state (topics, brokers, replica distribution, partition distribution)
  • Run preferred replica election
  • Generate partition assignments with option to select brokers to use
  • Run reassignment of partition (based on generated assignments)
  • Create a topic with optional topic configs (0.8.1.1 has different configs than 0.8.2+)
  • Delete topic (only supported on 0.8.2+ and remember set delete.topic.enable=true in broker config)
  • Topic list now indicates topics marked for deletion (only supported on 0.8.2+)
  • Batch generate partition assignments for multiple topics with option to select brokers to use
  • Batch run reassignment of partition for multiple topics
  • Add partitions to existing topic
  • Update config for existing topic
  • Optionally enable JMX polling for broker level and topic level metrics.

Cluster Management

cluster


Topic List

topic


Topic View

topic


Broker List

topic


Broker View

broker


Requirements

  1. Kafka 0.8.1.1 or 0.8.2.0
  2. sbt 0.13.x
  3. Java 7+

Configuration

The minimum configuration is the zookeeper hosts which are to be used for kafka manager state. This can be found in the application.conf file in conf directory. The same file will be packaged in the distribution zip file; you may modify settings after unzipping the file on the desired server.

kafka-manager.zkhosts="my.zookeeper.host.com:2181"

You can specify multiple zookeeper hosts by comma delimiting them, like so:

kafka-manager.zkhosts="my.zookeeper.host.com:2181,other.zookeeper.host.com:2181"

Alternatively, use the environment variable ZK_HOSTS if you don't want to hardcode any values.

ZK_HOSTS="my.zookeeper.host.com:2181"

Deployment

The command below will create a zip file which can be used to deploy the application.

sbt clean dist

Please refer to play framework documentation on production deployment.

If java is not in your path, or you need to build against a specific java version, please use the following (the example assumes oracle java8):

$ PATH=/usr/local/oracle-java-8/bin:$PATH \
  JAVA_HOME=/usr/local/oracle-java-8 \
  /path/to/sbt -java-home /usr/local/oracle-java-8 dist clean

This ensures that the 'java' and 'javac' binaries in your path are first looked up in the oracle java8 release. Next, for all downstream tools that only listen to JAVA_HOME, it points them to the oracle java8 location. Lastly, it tells sbt to use the oracle java8 location as well.

Starting the service

After extracting the produced zipfile, and changing the working directory to it, you can run the service like this:

$ bin/kafka-manager

By default, it will choose port 9000. This is overridable, as is the location of the configuration file. For example:

$ bin/kafka-manager -Dconfig.file=/path/to/application.conf -Dhttp.port=8080

Again, if java is not in your path, or you need to run against a different version of java, add the -java-home option as follows:

$ bin/kafka-manager -java-home /usr/local/oracle-java-8

Packaging

If you'd like to create a Debian or RPM package instead, you can run one of:

sbt debian:packageBin

sbt rpm:packageBin

Credits

Logo/favicon used is from Apache Kafka.

Most of the utils code has been adapted to work with Apache Curator from Apache Kafka.

License

Apache Licensed. See accompanying LICENSE file.

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A tool for managing Apache Kafka.

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