Updated on 2026-07-29 GMT+08:00

How Do I Troubleshoot Network Problems?

You can run the curl -kv command to check the network.

curl -kv masterAddress:port

For example, if you select region CN-Hong Kong and set Access Mode to Enhanced Agent, log in to the host where the application is deployed and run the curl -kv 100.125.6.106:41333 command to check the network connectivity. For details about access addresses in other regions, see Agent Access Addresses.

If the connection fails, check whether the ICMP security group of the firewall is enabled. Run the curl command to check whether the security groups of ports 41333 and 41335 are enabled. If the connection still fails, check the network on the service side and contact APM on-call personnel.