Symptom

After the ICAgent and Java probes are installed, no topology or data is displayed on Application Performance Management (APM).

Troubleshooting

1. If only the gray circle is displayed in the topology, check whether you are using the basic edition of APM. If yes, switch to the enterprise or professional edition, or click Experience for Free.
2. Check whether there are calls in the specified time range. Call relationships are generated only when there are calls in the specified time range. Data will be collected two or three minutes after calls are performed. In addition, check whether the time of the browser (Windows) is the same as that of the target Elastic Cloud Server (ECS).
3. Check whether applications (including the OS and Java type) meet usage restrictions.
4. Check whether the ICAgent on the host where services reside is normal.

   

5. Check whether applications are correctly connected to APM.
   • Connecting an ECS Application to APM
   • Connecting a HUAWEI CLOUD Containerized Application to APM
6. If you connect an ECS application to APM and start the program as a non-root user, check whether the following commands have been run to modify the permissions on the probe file and output directory before enabling application monitoring:
   • If the commands have not been run, run them.

     chmod -R 777 /opt/oss/servicemgr/ICAgent/pinpoint/
     mkdir -p /paas-apm/collectors/pinpoint
     chmod -R 777 /paas-apm

   • If the commands have been run, continue to check other items.
7. If you connect an ECS application to APM, check whether Dapm_application (application name) and Dapm_tier (service name) comply with the following naming rule:

   Each name must be 1 to 64 characters starting with a letter or an underscore (_). Only lowercase letters, digits, hyphens (-), and underscores are allowed.

8. In the navigation pane of the APM console, choose Agent > Configuration and check whether data collection is enabled. If it is disabled, enable it.