By default, Upsun projects are isolated for security. Applications and services inside one project cannot directly talk to another. But what if you need to connect them? Think database replication, multi service integration, or disaster recovery setups.
In our latest post, we show how to use Chisel, a lightweight tunneling tool, to securely connect multiple Upsun projects. It is fast, encrypted, and designed for scenarios where cross project communication is essential.
With Chisel, you get:
- Secure tunnels for encrypted traffic between projects
- Simple configuration in .upsun/config.yaml
- Support for MariaDB replication and beyond
- Resilient connections with auto reconnect and error recovery
Whether you are syncing databases across regions or wiring services together, Chisel makes it possible while keeping isolation as the default.
Read the full guide here 👉 Connect Multiple Upsun Projects with Chisel
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