Skip checking when failSwapOn=false

pkg/kubelet/cm/container_manager_linux.go

@@ -200,6 +200,7 @@ func NewContainerManager(mountUtil mount.Interface, cadvisorInterface cadvisor.I
 		return nil, fmt.Errorf("failed to get mounted cgroup subsystems: %v", err)
 	}
 
+	if failSwapOn {
 		// Check whether swap is enabled. The Kubelet does not support running with swap enabled.
 		swapData, err := ioutil.ReadFile("/proc/swaps")
 		if err != nil {
@@ -210,9 +211,11 @@ func NewContainerManager(mountUtil mount.Interface, cadvisorInterface cadvisor.I
 
 		// If there is more than one line (table headers) in /proc/swaps, swap is enabled and we should
 		// error out unless --fail-swap-on is set to false.
-	if failSwapOn && len(swapLines) > 1 {
+		if len(swapLines) > 1 {
 			return nil, fmt.Errorf("Running with swap on is not supported, please disable swap! or set --fail-swap-on flag to false. /proc/swaps contained: %v", swapLines)
 		}
+	}
+
 	var capacity = v1.ResourceList{}
 	// It is safe to invoke `MachineInfo` on cAdvisor before logically initializing cAdvisor here because
 	// machine info is computed and cached once as part of cAdvisor object creation.