How to ensure a kafka cluster is fully up?

Question

We have five node cluster running in production with 3 zookeepers - all are VMs. We have to restart the cluster often for some hardware patching.

We have written an ans

Answer 1

From the Java API, you can use AdminClient#describeCluster, which can return you the list of nodes in the cluster currently known to the Controller.

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Also, do not do broker rolling restarts like that. You should first identify which is the Contoller, then shut that down last.