Merge pull request #95 from Yolean/ops-jobs

Add Jobs and tests for common maintenance operations

1 files changed, 32 insertions, 0 deletions

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+
+## Re-assign Leadership
+
+This is one of the cases where this repo begs to differ from traditional Kafka setups.
+In Kubernetes the restart of a pod, and subsequent start on a different node, should be a non-event.
+
+> ”when a broker is stopped and restarted, it does not resume leadership of any partitions automatically”
+
+_-- Neha Narkhede, Gwen Shapira, and Todd Palino. ”Kafka: The Definitive Guide”_
+
+Create the `preferred-replica-election-job.yml` resource, after deleting any previous one.
+
+## Change a Partition's Replicas
+
+> ”From time to time, it may be necessary to change the replica assignments for a partition. Some examples of when this might be needed are:
+>  * If a topic’s partitions are not balanced across the cluster, causing uneven load on brokers
+>  * If a broker is taken offline and the partition is under-replicated
+>  * If a new broker is added and needs to receive a share of the cluster load”
+
+_-- Neha Narkhede, Gwen Shapira, and Todd Palino. ”Kafka: The Definitive Guide”_
+
+Use the `reassign-paritions-job.yml`, after editing `TOPICS` and `BROKERS`.
+
+## Increase a topic's replication factor
+
+See https://github.com/Yolean/kubernetes-kafka/pull/140
+
+Use the `replication-factor-increase-job.yml`, after editing `TOPICS` and `BROKERS`.
+
+The affected topics may end up without a preferred replica. See above to fix that,
+or to affect only your selected topics use [Kafka Manager](https://github.com/Yolean/kubernetes-kafka/pull/83)'s topic screen,
+Generate Partition Assignments followed by Reassign Partitions.