You can configure Cloudera Manager to perform different types of checks on Kafka
brokers during a rolling restart. The type of check performed by Cloudera Manager is configured
with the Cluster Health Guarantee During Rolling Restart property. The
property has multiple settings, each setting corresponds to a different type of
check.
The following steps walk you through the basic configuration method of how you can
enable and configure rolling restart checks.
- In Cloudera Manager, select the Kafka service.
- Go to Configuration.
- Find and configure the Cluster Health Guarantee During Rolling
Restart property.
Select one of the available options. Click the
? icon next to the
property name to reveal a full description of each option and the check to which
they correspond.
Cloudera recommends that you set this property to
all partitions stay healthy to avoid service
outages
- Optional: Fine-tune rolling restart check behaviour by configuring the
following properties:
- Maximum Allowed Runtime For Kafka Broker Rolling Restart
Check
- Retry Interval For Kafka Broker Rolling Restart Check
- Default API Timeout For Kafka Topics Client Used In Kafka Broker Rolling
Restart Check
These properties allow you to configure different interval and timeout values related
to the rolling restart check. Configure these properties based on your cluster and
requirements.
- Click Save Changes.
- Restart the Kafka service.
Rolling restart checks are configured and enabled. During any subsequent rolling
restarts, Cloudera Manager executes the type of check you configured.
If you make any configuration changes related to broker connectivity (security,
listeners, port, bootstrap) after rolling restart checks are enabled, you must disable rolling
restart checks for the first restart after the change was made. Otherwise, the check and the
rolling restart might fail. Following the initial restart, you can re-enable rolling restart
checks.