Single Node with Multiple Metrics

The Single Node with Multiple Metrics tab displays key metrics of your node and provides metric comparison between different days. You can keep track of metric changes and detect exceptions in a timely manner.

You can view multiple metrics of a single instance and compare them with metrics of other instances.

Procedure

Log in to the management console.
Click in the upper left corner and select a region and project.
Click in the upper left corner, and under Databases, click Data Admin Service.
In the navigation pane, choose Intelligent O&M > Instance List.
Alternatively, on the Overview page, click Go to Intelligent O&M.
In the upper right corner of the Instance List page, search for instances by engine type, instance name, or instance IP.

Figure 1 Searching for instances
Select the instance whose metrics you want to view and click Details.
Choose Performance > Single Node with Multiple Metrics.
Click Change Node to change the instance node if needed.

Click Select Metric, select the node metrics to display, and click OK.

**Table 1** Node metrics
Category	Metric	Description
CPU	CPU Usage	CPU usage of the monitored object (Unit: %)
	CPU Load	Average CPU load over the past 1, 5, and 15 minutes. The value is obtained using the w command.
	CPU Load in Past 1 Minute	Average CPU load over the past 1 minute. The value is obtained using the w command.
Memory	Memory Usage	Memory usage of the monitored object (Unit: %)
Memory	Available Memory	Memory available to the operating system (Unit: GB)
Network	Data Transfer In	Average number of bytes sent by the VM of the monitored object in a measurement period (Unit: KB/s)
Network	Data Transfer Out	Average number of bytes received by the VM of the monitored object in a measurement period (Unit: KB/s)
Disk Usage	System Disk Usage	Real-time larger value between usages of disks / and /var/log on the monitored node (Unit: %)
	Used Disk Space	Real-time data disk usage of the monitored node. In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: GB)
	Total Disk Space	Real-time total data disk size of the monitored node. In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: GB)
	Disk Usage	Real-time data disk usage on the monitored instance In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: %)
	Log Disk Used Space	Real-time used space of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: GB)
	Log Disk Total Space	Real-time total space of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: GB)
	Log Disk Usage	Real-time usage of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: %)
	ETCD Disk Usage	Usage of disk on the monitored node (from /var/chroot/usr/local/etcd). This metric is available only for combined deployments.
	Total swap space, which is obtained using the free -m command.	Total swap space, which is obtained using the free -m command.
	Swap usage, which is obtained using the free -m command.	Swap usage, which is obtained using the free -m command.
	Inode usage, which is obtained using the df -i command.	Inode usage, which is obtained using the df -i command.
IO	Disk IOPS	Real-time value of data disk reads and writes per second of the monitored node In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: Count/s)
	Log Disk IOPS	Real-time IOPS of disk directory /var/chroot/var/lib/log on the monitored node. This metric is available only for the independent deployment model. (Unit: Count/s)
	Disk Write Throughput	Real-time write throughput per second of the data disk on the monitored node In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: KB/s)
	Disk Read Throughput	Real-time read throughput per second of the data disk on the monitored node In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: KB/s)
	Log Disk Write Throughput	Real-time write throughput of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: KB/s)
	Log Disk Read Throughput	Real-time read throughput of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: KB/s)
	Time Required for per Disk Write	Average time required for a data disk write on the monitored node In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: ms)
	Time Required for per Disk Read	Average time required for a data disk read on the monitored node In independent deployment mode, data nodes monitor the /var/chroot/var/lib/engine/data disk, and non-data nodes monitor the /var/chroot/usr/local disk. In the combined deployment mode, only the data disk of the data nodes is monitored. (Unit: ms)
	Max. Log Disk Seconds per Write	Real-time seconds per write of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: ms)
	Max. Log Disk Seconds per Read	Real-time seconds per read of disk /var/chroot/var/lib/log on the monitored node. This metric is available only for independent deployments. (Unit: ms)
Process Status	om_agent Status	Whether the om_agent process exists on the current node
	om_monitor Status	Whether the om_monitor process exists on the current node
	dbmanager Status	Whether the dbmanager process exists on the current node
	watchdog Status	Whether the watchdog process exists on the current node
	agentmonitor Status	Whether the agentmonitor process exists on the current node
Semaphore	Semaphore format. Ipcs -s \| wc -1	Semaphore format. Ipcs -s \| wc -1
Password	Password Expiration Time	Password expiration time for accounts Ruby and root.

You can also perform the following operations:

Click Performance History and specify a time range in the upper right corner to view metric details in the last 1 hour, 12 hours, 1 day, 2 days, or 7 days.
You can also select a metric, click Details in the upper right corner of the graph, and specify a time range in the upper right corner to view metric details in the last 1 hour, 12 hours, 1 day, 2 days, or 7 days.
Click the Performance Trends Comparisons tab, select the metrics you want to view, and click OK.
You can also select the comparison time in the upper right corner of the Performance Trends Comparisons tab page.
Enable Interactive Graph to view other metrics.
Click Full Screen for a clear view.