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Improve PopulateNetbirdConfig goroutine with retry logic

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This commit is contained in:
Diego Romar
2025-12-18 16:27:37 -03:00
parent 0e9cddf2e8
commit 5a91664116
1 changed files with 26 additions and 4 deletions
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30
client/internal/engine.go
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@@ -464,11 +464,33 @@ func (e *Engine) Start(netbirdConfig *mgmProto.NetbirdConfig, mgmtURL *url.URL)
// Populate DNS cache with NetbirdConfig and management URL for early resolution
go func() {
if err := e.PopulateNetbirdConfig(netbirdConfig, mgmtURL); err != nil {
log.Warnf("failed to populate DNS cache: %v", err)
} else {
log.Info("populated DNS cache successfully")
backoff := time.Second
var lastErr error
const populateAttempts = 5
for attempts := 0; attempts < populateAttempts; attempts++ {
if pErr := e.PopulateNetbirdConfig(netbirdConfig, mgmtURL); pErr == nil {
log.Info("populated DNS cache successfully")
return
} else {
lastErr = pErr
log.Debugf("populate DNS cache attempt %d failed: %v", attempts+1, pErr)
}
d := backoff + time.Duration(rand.Intn(500))*time.Millisecond
log.WithFields(log.Fields{"attempt": attempts + 1, "sleep": d}).Debug("populate DNS cache retrying")
select {
case <-time.After(d):
case <-e.ctx.Done():
return
}
if backoff < 10*time.Second {
backoff *= 2
}
}
log.Errorf("failed to populate DNS cache after %d attempts: %v", populateAttempts, lastErr)
}()
log.Info("populated DNS cache with NetbirdConfig and management URL")