Managing Components and Monitoring Hosts¶
You can manage the following status and metrics of all components (including role instances) and hosts on the MRS console:
Status information: includes operation, health, configuration, and role instance status.
Indicator information: includes key monitoring indicators for each component.
Export monitoring metrics. (This function is not supported in MRS 3.x or later.)
Note
For MRS 1.7.2 or later and MRS 2.x, see Managing Services and Monitoring Hosts.
For MRS 3.x or later, see Procedure.
You can set the interval for automatically refreshing the page or click
to refresh the page immediately.Component management supports the following parameter values:
Refresh every 30 seconds
Refresh every 60 seconds
Stop refreshing
Prerequisites¶
You have synchronized IAM users. (On the Dashboard page, click Synchronize on the right side of IAM User Sync to synchronize IAM users.)
Procedure¶
Managing Components
Note
For details about how to perform operations on MRS Manager, see Managing Service Monitoring.
On the MRS cluster details page, click Components.
On the Components tab page, Service, Operating Status, Health Status, Configuration Status, Role, and Operation are displayed in the component list.
Table 1 describes the service operating status.
Table 1 Service operating status¶ Status
Description
Started
The service is started.
Stopped
The service is stopped.
Failed to start
Failed to start the role instance.
Failed to stop
Failed to stop the service.
Unknown
Indicates initial service status after the background system restarts.
Table 2 describes the service health status.
Table 2 Service health status¶ Status
Description
Good
Indicates that all role instances in the service are running properly.
Faulty
Indicates that the running status of at least one role instance is Faulty or the status of the service on which the current service depends is abnormal.
Unknown
Indicates that all role instances in the service are in the Unknown state.
Restoring
Indicates that the background system is restarting the service.
Partially Healthy
Indicates that the status of the service on which the service depends is abnormal, and APIs related to the abnormal service cannot be invoked by external systems.
Table 3 describes the service health status.
Table 3 Service configuration status¶ Status
Description
Synchronized
The latest configuration takes effect.
Configuration expired
The latest configuration does not take effect after the parameter modification. Related services need to be restarted.
Configuration failed
The communication is incorrect or data cannot be read or written during the parameter configuration. Use Synchronize Configuration to rectify the fault.
Configuring
Parameters are being configured.
Unknown
Indicates that configuration status cannot be obtained.
By default, the Service column is sorted in ascending order. You can click the icon next to Service, Operating Status, Health Status, or Configuration Status to change the sorting mode.
Click a specified service in the list to view its status and metric information.
Customize and view monitoring graphs.
In the Charts area, click Customize to customize service monitoring metrics.
In Period area, select a time of period and click View to view the monitoring data within the time period.
Managing Role Instances
Note
For versions earlier than MRS 3.x, see Managing Role Instances.
On the MRS cluster details page, click Components. In the component list, click the specified service name.
Click Instances to view the role status.
The role instance list contains the Role, Host Name, Management IP Address, Service IP Address, Rack, Running Status, and Configuration Status of each instance.
Table 4 shows the running status of a role instance.
Table 4 Role instance running status¶ Status
Description
Good
Indicates that the instance is running properly.
Bad
Indicates that the instance cannot run properly.
Decommissioned
Indicates that the instance is out of service.
Not started
Indicates that the instance is stopped.
Unknown
Indicates that the initial status of the instance cannot be detected.
Starting
Indicates that the instance is being started.
Stopping
Indicates that the instance is being stopped.
Restoring
Indicates that an exception may occur in the instance and the instance is being automatically rectified.
Decommissioning
Indicates that the instance is being decommissioned.
Recommissioning
Indicates that the instance is being recommissioned.
Failed to start
Indicates that the service fails to be started.
Failed to stop
Indicates that the service fails to be stopped.
Table 5 shows the configuration status of a role instance.
Table 5 Role instance configuration status¶ Status
Description
Synchronized
The latest configuration takes effect.
Configuration expired
The latest configuration does not take effect after the parameter modification. Related services need to be restarted.
Configuration failed
The communication is incorrect or data cannot be read or written during the parameter configuration. Use Synchronize Configuration to rectify the fault.
Configuring
Parameters are being configured.
Unknown
Current configuration status cannot be obtained.
By default, the Role column is sorted in ascending order. You can click the sorting icon next to Role, Host Name, OM IP Address, Business IP Address, Rack, Running Status, or Configuration Status to change the sorting mode.
You can filter out all instances of the same role in the Role column.
You can set search criteria in the role search area by clicking Advanced Search, and click Search to view specified role information. You can click Reset to reset the search criteria. Fuzzy search is supported.
Click the target role instance to view its status and metric information.
Customize and view monitoring graphs.
In the Charts area, click Customize to customize service monitoring metrics.
In Period area, select a time of period and click View to view the monitoring data within the time period.
Managing Hosts
Note
For versions earlier than MRS 3.x, see Managing Hosts.
On the MRS cluster details page, click the Nodes tab and expand a node group to view the host status.
The host list contains the Node Name, IP Address, Rack, Operating Status, Health Status, CPU Usage, Memory Usage, Disk Usage, Network Speed, Specification Name, Specifications and AZ.
Table 6 shows the host operating status.
Table 6 Host operating status¶ Status
Description
Normal
The host and service roles on the host are running properly.
Isolated
The host is isolated, and the service roles on the host stop running.
Table 7 describes the host health status.
Table 7 Host health status¶ Status
Description
Good
The host can properly send heartbeats.
Bad
The host fails to send heartbeats due to timeout.
Unknown
The host initial status is unknown during the operation of adding or deleting a host.
The nodes are sorted in ascending order by default. You can click Node Name, IP Address, Rack, Operating Status, Health Status, CPU Usage, Memory Usage, Disk Usage, Network Speed, Specification Name, or Specifications to change the sorting mode.
Click the target node in the list to view its status and metric information.