When deploying Cloudflare WARP on Rocky Linux 9, we may encounter two tricky issues that are not easy to troubleshoot at first glance. Here are the details and troubleshooting insights:
1. Token Retrieval During Zero Trust Registration
When trying to obtain the token for Zero Trust registration, you will find that the token is not directly displayed on the success page. The workaround here is to inspect the HTML source code of the registration success page, where you can locate the target token string appended to the end of the URL in the code. This solution was found by searching for threads discussing the problem of missing tokens on the registration interface.
2. Persistent Connection Failures
The WARP client keeps failing to establish a connection, and the root cause lies in the system-level restrictions of Rocky Linux 9. Specifically, the local DNS configuration file is locked at the system level, making it impossible to modify manually. We identified this issue by launching the WARP client in explicit mode and analyzing the detailed error logs generated during the startup process.
Recorded on January 9, 2026