Kafka actions
This article describes the main actions available for working with the service using the Actions icon in ADCM.
To go to the actions in the service, do the following:
-
On the CLUSTERS tab click on the line with the cluster.
-
In the cluster menu that opens, go to the Services page.
-
Click on the Actions icon in the row corresponding to the Kafka service and choose the desired action.
Check
The Check action checks the health of the service.
After selection, confirm the action by clicking Run.
In Kafka, the Check action starts the creation of test topics and checks their availability on each of the hosts with Kafka Broker.
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Expand
The Expand action expands the number of service instances in the established cluster. To expand the number of service instances, do the following:
-
Set options for installing new instances of the service.
-
Confirm your choice by clicking Next.
Configuration to run cluster extensionOptions for installing new service instancesOption Description Disable SELinux
Disable SELinux on added hosts. In order for this setting to take effect, after the Install operation is completed, you must restart the hosts manually
Disable Firewalld
Shutting down firewalld on hosts
Install OpenJDK
Installing java-1.8.0-openjdk package on hosts
Set vm.swappiness to 0
Disabling swapping on hosts
Configure /etc/hosts
Write added nodes to /etc/hosts on cluster hosts. It is recommended to disable this option if DNS is configured
-
Add the required number of hosts and place on it the components available for placement.
-
Confirm the action by clicking Run.
Installing service components for cluster expansion
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Shrink
The Shrink action reduces the number of service instances in the installed cluster. To reduce the number of service instances, do the following:
-
Select which components to remove from which host.
-
Confirm the action by clicking Run.
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Restart
The Restart action stops and then starts the service.
After selection, confirm the action by clicking Run.
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Start
The Start action starts the service.
After selection, confirm the action by clicking Run.
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Stop
The Stop action stops the service.
After selection, confirm the action by clicking Run.
To view the results of an action, go to JOBS and click on the name of the corresponding action or on its component.
Next, the page with the results of the action becomes available for viewing, where you can analyze errors if they occur.
Manage Ranger plugin
The Manage Ranger plugin action triggers the activation of the Ranger Kafka Plugin for the Kafka service. For information about Ranger Kafka Plugin, see Ranger Kafka Plugin.