netstat: return nothing when /proc/net/snmp6 not found

prometheus · Nov 7, 2017 · e583fe6 · e583fe6
1 parent 6e2053c
commit e583fe6
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/collector/netstat_linux.go b/collector/netstat_linux.go
@@ -121,6 +121,12 @@ func parseNetStats(r io.Reader, fileName string) (map[string]map[string]string,
 func getSNMP6Stats(fileName string) (map[string]map[string]string, error) {
 	file, err := os.Open(fileName)
 	if err != nil {
+		// On systems with IPv6 disabled, this file won't exist.
+		// Do nothing.
+		if os.IsNotExist(err) {
+			return nil, nil
+		}
+
 		return nil, err
 	}
 	defer file.Close()