Viewing MRS Node Resource Monitoring Metrics

Prerequisites

• The IAM users have been synchronized in advance. You can do this by clicking Synchronize next to IAM User Sync on the Dashboard page of the cluster details.
• You have logged in to MRS Manager. For how to log in, see Accessing MRS Manager.

Viewing Host Monitoring Charts

Operations on the MRS management console:

1. Log in to the MRS console.
2. On the Active Clusters page, select a running cluster and click its name to switch to the cluster details page.
3. Click Nodes and expand the node group information to view the status of all hosts.
4. The host list of a group contains the Node Name/Resource ID, IP, Status, Specifications, Disks, and AZ.
5. Click the target node in the list to view its status and metric information.
6. Click the Monitoring tab to view the monitoring charts of the current node.

Viewing Host Resource Overview

This function is only available in MRS 3.x or later.

1. Log in to FusionInsight Manager and choose Hosts > Resource Overview.
2. View the distribution information.

   In the Distribution tab, you can view the resource distribution of the cluster. By default, the monitoring data of the last hour is displayed. You can click to set a time range.

   Figure 1 Distribution tab
   
   • Click Select Metric to specify the metrics you want to check. After you select a metric, the host distribution in each range of the metric is displayed.
   • When you place the cursor on a color column, the number of hosts in the range is displayed. You can click a color column to view the list of hosts in the metric range.
     • You can click a host name in the Host Name column to access the host details page.
     • Click View Trends of a host in the Operation column of the list. The metric trends will be displayed. In the current cluster, if you have selected Host CPU-Memory-Disk Usage, View Trends is unavailable.
   • You can click Export Data to export the maximum, minimum, and average values of the current metric of all nodes in the cluster within the time range you have specified.

   Table 1 Metrics

   Category	Metric
   Process	Number of Running Processes Total Number of Processes Total Number of omm Processes Total Number of Processes in D and Z States
   Network Status	Host Network Packet Collisions Number of LAST_ACK States Number of CLOSING States Number of LISTENING States Number of CLOSED States Number of ESTABLISHED States Number of SYN_RECV States Number of TIME_WAITING States Number of FIN_WAIT2 States Number of FIN_WAIT1 States Number of CLOSE_WAIT States DNS Name Resolution Duration TCP Ephemeral Port Usage Host Network Packet Frame Errors
   Network Reading	Host Network Read Packets Host Network Read Dropped Packets Host Network Read Error Packets Host Network Receiving Rate
   Disk	Host Disk Write Rate Host Used Disk Host Free Disk Host Disk Read Rate Host Disk Usage
   Memory	Free Memory Cache Memory Size Total Kernel Cache Memory Size Shared Memory Size Host Memory Usage Used Memory
   Network Writing	Host Network Write Packets Host Network Write Error Packets Host Network Sending Rate Host Network Write Dropped Packets
   CPU	CPU Usage of Processes Whose Priorities Have Been Changed CPU Usage of User Space Processes CPU Usage of Kernel Space Processes Host CPU Usage CPU Total Time CPU Idle Time
   Host Status	Host File Handle Usage Average OS Load in 1 Minute Average OS Load in 5 Minutes Average OS Load in 15 Minutes Host PID Usage

3. Click the Trend tab to view host monitoring trends.

   The resource monitoring trend page of the cluster is displayed. By default, the monitoring data of the past one hour (1h) is displayed. You can click to set a time range.

   Figure 2 Trend tab
   
   • You can click Add Host to Chart to add trend lines of up to 12 hosts to the trend charts.
   • Click and Customize to select the metrics to be displayed on the page.
   • You can click Export Data to export the maximum, minimum, and average values of all nodes in the cluster for all selected metrics within the time range you have specified.

4. Click the Cluster tab to view the cluster information.

   You can view the resource monitoring page of each cluster on FusionInsight Manager at the same time.

   By default, the monitoring data of the past one hour (1h) is displayed. You can click to set a time range.

   Figure 3 Cluster tab
   
   • Click and Customize to select the metrics to be displayed on the page.
   • You can click Export Data to export the metric values of each cluster within the time range you have specified.

5. Click the Host tab to view the host information.

   You can view the host resource status, including basic configuration (CPU/memory) and disk configuration.

   Click Export Data to export the configuration list of all hosts in the cluster.

   Figure 4 Host tab
   
   • Basic Configurations (CPU/Memory)

     You can hover your cursor over the pie chart to view the number of hosts of each hardware configuration in the cluster. The information is displayed in the format of Number of cores (CPU architecture) Memory size.

     You can click a slice on the pie chart to view the list of hosts.

   • Disk Configurations

     The horizontal axis indicates the total disk capacity (including the OS disk) of a node, and the vertical axis indicates the number of logical disks (including the OS disk).

     You can hover your cursor over a dot to view information about disks of the current configuration, including the quantity of disks, total capacity, and number of hosts.

     You can click a dot on the chart to view the list of hosts.