e34e2c251f
* healthchecks: check on every 3rd failure Check on every third failure and some cleanups to make this possible. A failed healthcheck will never increase Fails, a successfull healthceck will reset Fails to 0. This is a chance this counter now drops below 0, making the upstream super? healthy. This removes the okUntil smartness and condences everything back to 1 metrics: Fails; so it's simpler in that regard. Timout errors are *not* attributed to the local upstream, and don't get counted into the Fails anymore. Meaning the 'dig any isc.org' won't kill your upstream. Added extra test the see if the Fails counter gets reset after 3 failed connection. There is still a disconnect beween HTTP healthceck working the proxy (or lookup) not being able to connect to the upstream. * Fix tests
18 lines
430 B
Go
18 lines
430 B
Go
package proxy
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import (
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"sync/atomic"
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"github.com/coredns/coredns/plugin/pkg/healthcheck"
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)
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// Default CheckDown functions for use in the proxy plugin.
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var checkDownFunc = func(upstream *staticUpstream) healthcheck.UpstreamHostDownFunc {
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return func(uh *healthcheck.UpstreamHost) bool {
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fails := atomic.LoadInt32(&uh.Fails)
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if fails >= upstream.MaxFails && upstream.MaxFails != 0 {
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return true
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}
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return false
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}
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}
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