View OBKV-Table monitoring data

This topic describes how to view the OBKV-Table monitoring data of a tenant. OBKV-Table is a multi-model NoSQL database service. Based on the underlying engine of OceanBase Database, it provides three data models: table, key-value, and wide column. It stores massive structured and semi-structured data with low costs, and is applicable to business scenarios such as metadata, orders, bills, profiles, social media, feed streams, logs, and risk control. OBKV-Table and SQL operations are performed at two computing layers of the same level and by accessing the same distributed storage of OceanBase Database. In an architecture that integrates such a relationship with NoSQL, you can use OBKV-Table for simple and quick DML operations and perform parallel complex SQL queries on the same copy of data at the same time.

You can use one of the following methods to view the OBKV-Table monitoring data of a tenant:

• Method 1: Log in to the OceanBase Cloud Platform (OCP) console and go to the tenant overview page. In the left-side navigation pane, click Performance Monitoring .

• Method 2: Log in to the OCP console. In the left-side navigation pane, click Performance Monitoring to go to the OceanBase Database Tenant tab.

Prerequisites

• To view the OBKV-Table monitoring data of a tenant by using Method 1, make sure that you have the following permissions:

  • Resource Permissions : Cluster Read-only or Tenant Read-only permission
  • Menu Permissions : Permission on the Performance Monitoring menu of Tenants

• To view the OBKV-Table monitoring data of a tenant by using Method 2, make sure that you have the following permissions:

  • Resource Permissions : Cluster Read-only, Tenant Read-only, or Host Read-only permission
  • Menu Permissions : Permission on the All menu of Performance Monitoring

• The tenant belongs to a cluster of OceanBase Database V3.2.4.4 or later.

• You can view the 99-all, 95-all, and 90-all metrics for the response time in OceanBase Database of the following versions:

  • [V4.2.1.7, V4.2.2.0)
  • [V4.2.5.0, V4.3.0.0)
  • [V4.3.4.1, +∞)

Procedure

1. Log in to the OCP console.

2. In the left-side navigation pane, select Tenants . The Tenants page appears.

3. On the Tenants page, find the target tenant and click its name to go to the Overview page of the tenant.

4. In the left-side navigation pane, click Performance Monitoring .

5. In the Data Filtering section, configure the parameters for filtering monitoring data.

   The following table describes the filter parameters.

   Parameter	Description
   Tenant	Select a tenant to view its monitoring information.
   Zone	By default, the monitoring information of all zones is displayed.
   OBServer	By default, the monitoring information of all OBServer nodes is displayed.
   Select Time	This parameter is not displayed in auto-refresh mode. Select the time range of the data that you want to query.
   Auto Refresh	By default, the auto-refresh mode is disabled. After it is enabled, performance monitoring data is refreshed every 5 seconds.

6. Click the OBKV_Table tab and view related monitoring data.

   • OCP allows you to view monitoring data in two dimensions: tenant and unit. By default, the system displays the monitoring data in the tenant dimension. The metrics vary in different dimensions.
   • By default, the system displays all metrics in the current dimension. If you want to ignore a metric, click Select Metric on the right of the area and deselect the metric in the panel that appears.
   • For more information about the monitoring metrics, see Overview of metrics. If the statistical range covers multiple OBServer nodes, the aggregate metric values of the OBServer nodes are displayed.

   The following features allow you to view and analyze the performance monitoring data on a trend chart in a more efficient manner. You can learn about the features with the help of the figure below.

   

   • Filter data.

     1. View the trend details of a metric over a specific period of time: To use this feature, drag the pointer over a period of time to select this period. The system will then zoom in to display the trend details. To resume to the normal view, double-click the trend chart, as indicated by ① in the preceding figure.

     2. Hide the data of a submetric: To use this feature, click the icon of this submetric. The submetric will then turn gray and its data will be hidden from the chart, as indicated by ② in the preceding figure.

     3. View the detailed data of a specific point in time: To use this feature, hover the pointer over a point in time on the trend chart, as indicated by ③ in the preceding figure.

   • Zoom in on a trend chart: To use this feature, click the zoom-in icon in the upper-right corner of the chart. The features indicated by ①, ②, and ③ in the preceding figure are also applicable to a zoomed-in chart.

   • View SQL request analysis: On the Response time trend chart, click SQL Request Analysis in the upper-right corner to view the request analysis details. For more information, see View SQL request analysis.

     Note

     SQL request analysis is available only on the Response time trend chart.

   • Drill down to view monitoring data in different dimensions: If you find an abnormal metric such as a long response time on the Tenant Dimension tab, perform drill-down analysis to identify the faulty server. Click the Drill-down Analysis icon in the upper-right corner of the trend chart to view the drill-down analysis details. The OBKV_Table tab supports the following drill-down dimensions: tenant > OBServer node.

     The features indicated by ①, ②, and ③ in the preceding figure are also applicable to a trend chart on a drill-down page. You can also perform the following operations:

     

     • In the Data Filtering section indicated by ① in the figure, specify filter conditions. If you do not specify any filter conditions, the drill-down page automatically inherits filter conditions from the upper-level page.

     • If the metric has submetrics, you can view the submetrics or drill down to other dimensions, as indicated by ② in the figure.

     • The trend chart also provides an entry to the host performance monitoring feature. Hover the pointer over the Go to Host Performance Monitoring link, as indicated by ③ in the figure, and click the target host to go to its Performance Monitoring page and view the monitoring details.

     • You can also click the icon indicated by ④ in the upper-right corner of a trend chart, and select the hosts whose performance monitoring data needs to be displayed on the trend chart.