Viewing Monitoring Metrics

Scenario

After you start a real-time migration job, Cloud Eye automatically associates monitoring metrics of the job. This helps you learn the status of the job.

It takes some time for the system to obtain and transmit monitoring data, so the job status displayed on the Job Monitoring page is not up-to-date. If you just started a real-time migration job, wait for 5 to 10 minutes and then view the monitoring data.

Prerequisites

You have obtained required Cloud Eye permissions.
The real-time migration job is running properly. If it has been stopped or is abnormal, you can only view its monitoring metrics in the last seven days.
The real-time migration job has been running properly for about 10 minutes.

Supported Monitoring Metrics

Table 1 lists the monitoring metrics supported for real-time processing migration jobs.

**Table 1** Monitoring metrics supported for real-time processing migration jobs
Metric Name	Description	Value Range	Monitored Object	Monitoring Period (Raw Data)
Source Database WAL Extraction Latency	Latency of extracting WALs from the source database	≥ 0 ms	Real-time processing migration job	1 minute
Job Data Read Rate	Data input rate of a Flink job for monitoring and debugging	≥ record/s	Real-time processing migration job	1 minute
Job Data Write Rate	Data output rate of a Flink job for monitoring and debugging	≥ record/s	Real-time processing migration job	1 minute
Job Total Data Read	Total number of data inputs of a Flink job for monitoring and debugging	≥ records	Real-time processing migration job	1 minute
Job Total Data Write	Total number of output data records of Flink jobs for monitoring and debugging.	≥ records	Real-time processing migration job	1 minute
Job Byte Read Rate	Input bytes of a Flink job per second	≥ Byte/s	Real-time processing migration job	1 minute
Job Byte Write Rate	Output bytes of a Flink job per second	≥ Byte/s	Real-time processing migration job	1 minute
Job Total Read Byte	Total number of input bytes of a Flink job	≥ Byte/s	Real-time processing migration job	1 minute
Job Total Write Byte	Total number of output bytes of a Flink job	≥ Byte/s	Real-time processing migration job	1 minute
Job CPU Usage	CPU usage of the Flink job	≥ 0%	Real-time processing migration job	1 minute
Job Memory Usage	Memory usage of the Flink job	≥ 0%	Real-time processing migration job	1 minute
Job Maximum Operator Latency	Maximum operator latency of a Flink job, in milliseconds	≥ 0 ms	Real-time processing migration job	1 minute
Job Maximum Operator Backpressure	Maximum operator back pressure value of a Flink job. The value ranges from 0 to 1. A larger value indicates severer back pressure.	≥ 0	Real-time processing migration job	1 minute

Procedure

Log in to the DataArts Studio console by following the instructions in Accessing the DataArts Studio Instance Console.
On the DataArts Studio console, locate a workspace and click DataArts Factory.
In the left navigation pane of DataArts Factory, choose Monitoring > Job Monitoring.
On the Real-Time Migration Jobs page, click a job name.
Figure 1 Monitoring a real-time migration job
On the details page, click the Monitoring Information tab. You can view some key metrics of the job at the bottom of the page.
Figure 2 Key metrics
Click View Monitoring Metrics to go to the Cloud Eye console and view monitoring metrics.
Figure 3 Viewing monitoring metrics

For more information about monitoring metrics, see the Cloud Eye User Guide.