k8skafka-controller

Kubernetes controller that can manage Kafka Topics.

Controller assumes you already have a working Kafka installation. How Kafka brokers are actually managed is outside of the scope of this project for the moment.

Features

Supported

creating topics
creating additional partitions for existing topics

Not currently supported

deleting topics, garbage collection
deleting partitions
changing replication factor for existing topics and partitions

Known issues

partition assigning can in some cases lead to leader being skewed

Example KafkaTopic

A KafkaTopic represents one Kafka Topic.

apiVersion: kafka.infra.doodle.com/v1beta1
kind: KafkaTopic
metadata:
  name: test-topic
spec:
  address: "kafka:9092"
  name: "test-topic"
  partitions: 16
  replicationFactor: 1
  config:
    cleanupPolicy: compact
    deleteRetentionsMs: 31556952000

Helm chart

Please see chart/k8skafka-controller for the helm chart docs.

Configure the controller

You may change base settings for the controller using env variables (or alternatively command line arguments). Available env variables:

Name	Description	Default
`METRICS_ADDR`	The address of the metric endpoint binds to.	`:9556`
`PROBE_ADDR`	The address of the probe endpoints binds to.	`:9557`
`ENABLE_LEADER_ELECTION`	Enable leader election for controller manager.	`false`
`LEADER_ELECTION_NAMESPACE`	Change the leader election namespace. This is by default the same where the controller is deployed.	``
`NAMESPACES`	The controller listens by default for all namespaces. This may be limited to a comma delimited list of dedicated namespaces.	``
`CONCURRENT`	The number of concurrent reconcile workers.	`4`

License

DoodleScheduling/k8skafka-controller

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