mirror of
https://github.com/coredns/coredns.git
synced 2025-11-01 10:43:17 -04:00
7b8cf9df90
Reloading caddy won't kill the health handler. Only on final shutdown we stop the handler. Currently when reloading CoreDNS with -SIGUSR1 the health handler stops answering - there is a test for this but it doesn't capture whole process reloading, sadly. This PR keeps the handler alive during reloads and only stops on process shutdown.
health
This module enables a simple health check endpoint. By default it will listen on port 8080.
Syntax
health [ADDRESS]
Optionally takes an address; the default is :8080. The health path is fixed to /health. The
health endpoint returns a 200 response code and the word "OK" when CoreDNS is healthy. It returns
a 503. health periodically (1s) polls middleware that exports health information. If any of the
middleware signals that it is unhealthy, the server will go unhealthy too. Each middleware that
supports health checks has a section "Health" in their README.
Examples
Run another health endpoint on http://localhost:8091.
health localhost:8091