Kafka-manager requires manual config to find cluster

Running kafka-manager on an existing kafka cluster using the following command:

kafka-manager/bin/kafka-manager -Dconfig.file=../../configs/application.conf

This allows me to access the kafka-manager via web browser but no clusters are preconfigured even though I gave the manager the ZK host:port in the cfg file. I have to manually “Add Cluster” from the web interface, only providing a custom name and “localhost:2181” under ZK host.

I need this automated. I’m surprised this isn’t done already, I already provide it the zkhost:port in the config file (below). Perhaps it needs a name in order to create the cluster and that’s not provided in the config file?

The application.conf is as follows:

play.crypto.secret=${?APPLICATION_SECRET}
play.i18n.langs=["en"]
play.http.requestHandler = "play.http.DefaultHttpRequestHandler"
play.application.loader=loader.KafkaManagerLoader
kafka-manager.zkhosts="localhost:2181"
kafka-manager.zkhosts=${?ZK_HOSTS}
pinned-dispatcher.type="PinnedDispatcher"
pinned-dispatcher.executor="thread-pool-executor"
application.features=["KMClusterManagerFeature","KMTopicManagerFeature","KMPreferredReplicaElectionFeature","KMReassignPartitionsFeature"]
akka {
  loggers = ["akka.event.slf4j.Slf4jLogger"]
  loglevel = "INFO"
}
basicAuthentication.enabled=false
basicAuthentication.username="admin"
basicAuthentication.password="password"
basicAuthentication.realm="Kafka-Manager"```

[etotheipi]

Thanks @sheepkiller, that’s exactly what I needed.

Note that I needed to use ${KM_URL}/clusters to submit the POST action, but otherwise it was exactly as you said:

curl localhost:9000/clusters --data "name=primarycluster&zkHosts=localhost:2181&kafkaVersion=0.9.0.1" -X POST

[sonnyg]

Just to add to this conversation…

I came here looking for this exact functionality, and while the examples here did not work, I was eventually able to add a cluster entry. I wanted to post my process here for others to try.

I am running firefox developer edition, but this should work with other browsers as well. Also, I am running kafka-manager inside a docker container, localhost:9000.

1. Browse to localhost:9000/addCluster
2. Open the developer tools
3. select the network tab (may need to select “persist logs”)
4. Complete the form with your desired values, submit
5. In developer tools, select the network tab
6. Find the POST call
7. Right click on the entry and select Copy > Copy cURL (or Copy POST DATA)
8. Create a new script (I created a .sh script), and paste (or create) the curl command

If this doesn’t work the first time, you can redirect the output to an html file. Open the html file in a browser and you can see which form entries failed.

In my scenario:

./create-cluster.sh > results.html

Then I would open results.html in a browser to see which form field was invalid, looking for entries with “This field is required” next to them.