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Make middleware that sets up a (http) handler survive a graceful restart. We calls the middleware's Shutdown function(s). If restart fails the Start function is called again. * middleware/health: OK * middleware/pprof: OK * middleware/metrics: OK All restart OK.
health
This module enables a simple health check.
By default it will listen on port 8080.
Restarting CoreDNS will stop the health checking. This is a bug. Also this upstream Caddy bug.
Syntax
health
It optionally takes an address, the default is :8080. The health path is fixed to /health. It
will just return "OK", when CoreDNS is healthy.
This middleware only needs to be enabled once.
Examples
health localhost:8091