To troubleshoot the NATS connector timeout issue in Kubernetes, first ensure that both the meta and compute nodes can connect to NATS. You can test network connectivity from within the pods using tools like nc or natscli. If connectivity is confirmed, consider the following steps:

1. Verify that the NATS service is not under high load, as RisingWave pulls from Jetstream in parallel.
2. Check for DNS resolution issues, as errors like failed to lookup address information: Name or service not known may indicate service restarts or misconfigurations.
3. Use a Rust script provided by the support team to test direct NATS Jetstream access from within the Kubernetes environment.
4. If the script works, the issue may lie within RisingWave's internal logic or configuration.
5. Avoid using special characters like . in subject names, as they can cause issues with consumer creation in NATS. Use simple names and ensure they are new to avoid fetching old configurations.
6. If necessary, update to the latest RisingWave image or wait for a patch that addresses the character replacement logic in subject names.

By following these steps, you can identify and resolve the connectivity issue between RisingWave and NATS Jetstream in a Kubernetes environment.