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pkg/proxy: panic if run out of fd #6727

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merged 1 commit into from Apr 13, 2015
Merged

pkg/proxy: panic if run out of fd #6727

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10 changes: 10 additions & 0 deletions pkg/proxy/proxier.go
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Expand Up @@ -79,6 +79,9 @@ func tryConnect(service ServicePortName, srcAddr net.Addr, protocol string, prox
// and keep accepting inbound traffic.
outConn, err := net.DialTimeout(protocol, endpoint, retryTimeout*time.Second)
if err != nil {
if isTooManyFDsError(err) {
panic("Dial failed: " + err.Error())
}
glog.Errorf("Dial failed: %v", err)
continue
}
Expand All @@ -101,6 +104,9 @@ func (tcp *tcpProxySocket) ProxyLoop(service ServicePortName, myInfo *serviceInf
// Then the service port was just closed so the accept failure is to be expected.
break
}
if isTooManyFDsError(err) {
panic("Accept failed: " + err.Error())
}
glog.Errorf("Accept failed: %v", err)
continue
}
Expand Down Expand Up @@ -791,3 +797,7 @@ func (proxier *Proxier) iptablesHostPortalArgs(destIP net.IP, destPort int, prot
args = append(args, "-j", "DNAT", "--to-destination", net.JoinHostPort(proxyIP.String(), strconv.Itoa(proxyPort)))
return args
}

func isTooManyFDsError(err error) bool {
return strings.Contains(err.Error(), "too many open files")
}