Viewing MRS Cluster Events

Concepts

• Differences between events and alarms: Events are records of status changes and operational actions that occur during system runtime, used primarily for auditing and tracking system behavior. In contrast, alarms are notifications triggered when the system detects exceptions, requiring direct administrator handling. While events generally do not require manual intervention, check whether associated alarms are generated for events with a severity level of Major or higher.
• IAM user synchronization: When performing operations on the MRS console, synchronize user information from IAM to the cluster to ensure consistent user permissions. Before viewing cluster events on the management console, ensure that IAM users have been synchronized.

Video Tutorial

This tutorial introduces how to view cluster alarms and events and configure an alarm threshold.

The UI may vary depending on the version. This tutorial is for reference only.

Viewing Cluster Events on the Management Console

1. Log in to the MRS console.
2. On the Active Clusters page, select a running target cluster and click its name to go to the cluster details page.
3. On the Dashboard page, click Synchronize next to IAM User Sync to synchronize IAM users.

   IAM user synchronization synchronizes user information from IAM to the cluster, ensuring consistent operational permissions on the console.

4. Choose Alarms > Events. On the displayed page, view event information about the cluster.
   Figure 1 Viewing MRS cluster events
   

   In the event list, you can check events generated in the current cluster, including the event name, severity, and generation time.

   You can click the arrow before an event name to expand the event details.

5. To export event information, click Export, select the file format, and export the event file to a local directory.

   On the Events page, verify that the event list loads properly and event information is displayed correctly. Verify that the event severity and generation time are accurate. Click the arrow next to an event name to expand event details, and confirm that the details are complete and readable.

Viewing Cluster Events on Manager

1. Log in to FusionInsight Manager of the MRS cluster.

   For details about how to log in to FusionInsight Manager, see Accessing MRS Manager.

2. Choose O&M > Alarm > Events. On the displayed Events page, you can view information about all events in the cluster, including the event name, ID, severity, generation time, source, object, and location. By default, the latest 10 events are displayed on each page.
   • For clusters of MRS 2.x or earlier, choose Alarms > Events.
   • Click Export All to export all event details.
   • You can click to manually refresh the current page and click to select the columns that will display.
   • You can filter events by object or cluster.
   • You can click Advanced Search to search for events by event ID, name, severity, start time, or end time.

   You can click on the left of an event to view detailed event parameters. Table 1 describes the parameters.

   Table 1 Event parameters

   Parameter	Description
   Event ID	Event ID.
   Event Name	Event name.
   Event Severity	Event severity. The options are Critical, Major, Minor, and Suggestion. Critical: A critical fault has occurred. The system requires immediate rectification. Major: A major system issue has occurred. Handle and resolve the problem as soon as possible. Minor: A minor system issue has occurred. It requires administrator attention. Suggestion: An event has occurred. Used for informational purposes only; no action is required.
   Generated	The date and time when the event was generated, formatted as yyyy-MM-dd HH:mm:ss.
   Object	Information about the object associated with the event, such as the service name and role name.
   Serial Number	The unique numerical identifier for an event generated by the system.
   Location	Detailed information for locating the event, which includes the following: Source: cluster for which the event is generated. ServiceName: service for which the event is generated. RoleName: role for which the event is generated. HostName: host for which the event is generated.
   Additional Info	Supplemental error details for the event, used for troubleshooting and fault localization.
   Event Cause	The potential root cause of the event, helping administrators understand why the event occurred.
   Source	The name of the cluster where the event was generated.

Common Events of an MRS Cluster

Helpful Links

• You can configure event notifications to receive notification messages through different subscription endpoints (such as SMS messages and emails). For details, see Configuring Notifications for MRS Cluster Alarms and Events.
• You can view MRS operation logs on the management console. For details, see Viewing MRS Operation Logs.
• For details about viewing and handling alarms generated in a cluster, see Viewing Alarms of an MRS Cluster.
• For details about configuring alarm thresholds for cluster monitoring metrics, see Configuring Alarm Thresholds for an MRS Cluster.