// Module included in the following assemblies:
//
// assembly-maintenance-time-windows.adoc

[id='proc-configuring-maintenance-time-windows-{context}']
= Configuring a maintenance time window

You can configure a maintenance time window for rolling updates triggered by supported processes.

.Prerequisites

* A Kubernetes cluster.
* The Cluster Operator is running.

.Procedure

. Add or edit the `maintenanceTimeWindows` property in the `Kafka` resource.
For example to allow maintenance between 0800 and 1059 and between 1400 and 1559 you would set the `maintenanceTimeWindows` as shown below:
+
[source,yaml,subs=attributes+]
----
apiVersion: {KafkaApiVersion}
kind: Kafka
metadata:
  name: my-cluster
spec:
  kafka:
    # ...
  zookeeper:
    # ...
  maintenanceTimeWindows:
    - "* * 8-10 * * ?"
    - "* * 14-15 * * ?"
----

. Create or update the resource:
+
[source,shell,subs=+quotes]
kubectl apply -f _<kafka_configuration_file>_

.Additional resources

Performing rolling updates:

* xref:proc-manual-rolling-update-statefulset-{context}[]
* xref:proc-manual-rolling-update-pods-{context}[]
