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Improve err message when parsing kernel port range

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Signed-off-by: Brian Goff <cpuguy83@gmail.com>
This commit is contained in:
Brian Goff 2015-03-21 16:57:22 -04:00
parent 831c796fb7
commit 8e4d9f3cf9
1 changed files with 3 additions and 2 deletions
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5
daemon/networkdriver/portallocator/portallocator.go
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@ -70,10 +70,11 @@ func NewErrPortAlreadyAllocated(ip string, port int) ErrPortAlreadyAllocated {
func init() {
const portRangeKernelParam = "/proc/sys/net/ipv4/ip_local_port_range"
portRangeFallback := fmt.Sprintf("using fallback port range %d-%d", beginPortRange, endPortRange)
file, err := os.Open(portRangeKernelParam)
if err != nil {
log.Warnf("Failed to read %s kernel parameter: %v", portRangeKernelParam, err)
log.Warnf("port allocator - %s due to error: %v", portRangeFallback, err)
return
}
var start, end int
@ -82,7 +83,7 @@ func init() {
if err == nil {
err = fmt.Errorf("unexpected count of parsed numbers (%d)", n)
}
log.Errorf("Failed to parse port range from %s: %v", portRangeKernelParam, err)
log.Errorf("port allocator - failed to parse system ephemeral port range from %s - %s: %v", portRangeKernelParam, portRangeFallback, err)
return
}
beginPortRange = start