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plugin/forward: add startup health checks with start_failed (#8663)

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* plugin/forward: add startup health checks with start_failed

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>

* test: separate CoreDNS and third-party imports

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>

---------

Signed-off-by: houyuwushang <180804215+houyuwushang@users.noreply.github.com>
This commit is contained in:
houyuwushang
2026-10-21 11:34:41 +08:00
committed by GitHub
parent 0fe7b08fbb
commit 3cbe6b5269
8 changed files with 250 additions and 12 deletions
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11
plugin/forward/setup.go
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@@ -75,6 +75,9 @@ func setup(c *caddy.Controller) error {
func (f *Forward) OnStartup() (err error) {
for _, p := range f.proxies {
p.Start(f.hcInterval)
if f.startFailed {
p.StartFailed()
}
}
return nil
}
@@ -158,6 +161,9 @@ func parseStanza(c *caddy.Controller) (*Forward, error) {
if f.maxAge > 0 && f.maxAge < f.expire {
return f, fmt.Errorf("max_age (%s) must not be less than expire (%s)", f.maxAge, f.expire)
}
if f.startFailed && f.maxfails == 0 {
return f, fmt.Errorf("start_failed requires health checking; max_fails must be greater than zero")
}
// Reject HTTPS upstreams that include a path, the doh implementation default to /dns-query path.
for _, addr := range to {
@@ -290,6 +296,11 @@ func parseBlock(c *caddy.Controller, f *Forward) error {
return err
}
f.maxfails = uint32(n)
case "start_failed":
if c.NextArg() {
return c.ArgErr()
}
f.startFailed = true
case "max_connect_attempts":
if !c.NextArg() {
return c.ArgErr()