After an MRS cluster is created, you can view basic information and patch information about the clusters and the cluster management page.
Viewing Basic Information About an Active Cluster After clusters are created, you can monitor and manage clusters. Choose Clusters > Active Clusters. Select a cluster and click its name to switch to the cluster information page. Click Cluster Details to view information about a cluster such as the configurations, deployed nodes, and other basic information.
Viewing Patch Information About an Active Cluster You can view patch information about cluster components. If a cluster component, such as Hadoop or Spark, is abnormal, download the patch. Then choose Clusters > Active Clusters. Select a cluster and click its name to switch the cluster information page to upgrade the component to resolve the problem.
Entering the Cluster Management Page After Kerberos authentication is disabled, you can choose Clusters > Active Clusters, select a cluster and click its name to switch to the cluster information page, and then click View to go to the cluster management page. You can view and handle alarms, modify cluster configurations, and upgrade cluster patches on the page.
Expanding a Cluster The storage and computing capabilities of MRS can be improved by simply adding Core nodes or Task nodes instead of modifying system architecture, reducing O&M costs. Core nodes can process and store data. You can add Core nodes to increase the number of nodes that process the peak load. Task nodes are used for computing and do not store persistent data.
Shrinking a Cluster You can reduce Core nodes or Task nodes based on service requirements to shrink a cluster so that MRS has better storage and computing capabilities at lower O&M costs.
Performing Auto Scaling for a Cluster Auto scaling can automatically adjust computing resources based on service requirements and the policies preset by users, so the number of Task nodes can increase or decrease with service load changes, ensuring stable service running.
Terminating a Cluster If you do not need an MRS cluster after the job execution is complete, you can terminate the MRS cluster.