diff --git a/bootstrap/kubeadm/main.go b/bootstrap/kubeadm/main.go
index 4360607b0969..f6f912186492 100644
--- a/bootstrap/kubeadm/main.go
+++ b/bootstrap/kubeadm/main.go
@@ -59,16 +59,16 @@ func init() {
 }
 
 var (
-	metricsAddr              string
-	enableLeaderElection     bool
-	leaseDuration            time.Duration
-	renewDeadline            time.Duration
-	retryPeriod              time.Duration
-	watchNamespace           string
-	profilerAddress          string
-	kubeadmConfigConcurrency int
-	syncPeriod               time.Duration
-	webhookPort              int
+	metricsAddr                 string
+	enableLeaderElection        bool
+	leaderElectionLeaseDuration time.Duration
+	leaderElectionRenewDeadline time.Duration
+	leaderElectionRetryPeriod   time.Duration
+	watchNamespace              string
+	profilerAddress             string
+	kubeadmConfigConcurrency    int
+	syncPeriod                  time.Duration
+	webhookPort                 int
 )
 
 func InitFlags(fs *pflag.FlagSet) {
@@ -78,14 +78,14 @@ func InitFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
 
-	fs.DurationVar(&leaseDuration, "lease-duration", 15*time.Second,
-		"Interval at which non-leader candidates will wait to force acquire leadership (e.g. 20s)")
+	fs.DurationVar(&leaderElectionLeaseDuration, "lease-duration", 15*time.Second,
+		"Interval at which non-leader candidates will wait to force acquire leadership (duration string)")
 
-	fs.DurationVar(&renewDeadline, "renew-deadline", 10*time.Second,
-		"Duration that the acting master will retry refreshing leadership before giving up (e.g. 15s)")
+	fs.DurationVar(&leaderElectionRenewDeadline, "renew-deadline", 10*time.Second,
+		"Duration that the acting master will retry refreshing leadership before giving up (duration string)")
 
-	fs.DurationVar(&retryPeriod, "retry-period", 2*time.Second,
-		"Duration the LeaderElector clients should wait between tries of actions (e.g. 5s)")
+	fs.DurationVar(&leaderElectionRetryPeriod, "retry-period", 2*time.Second,
+		"Duration the LeaderElector clients should wait between tries of actions (duration string)")
 
 	fs.StringVar(&watchNamespace, "namespace", "",
 		"Namespace that the controller watches to reconcile cluster-api objects. If unspecified, the controller watches for cluster-api objects across all namespaces.")
@@ -127,9 +127,9 @@ func main() {
 		MetricsBindAddress: metricsAddr,
 		LeaderElection:     enableLeaderElection,
 		LeaderElectionID:   "kubeadm-bootstrap-manager-leader-election-capi",
-		LeaseDuration:      &leaseDuration,
-		RenewDeadline:      &renewDeadline,
-		RetryPeriod:        &retryPeriod,
+		LeaseDuration:      &leaderElectionLeaseDuration,
+		RenewDeadline:      &leaderElectionRenewDeadline,
+		RetryPeriod:        &leaderElectionRetryPeriod,
 		Namespace:          watchNamespace,
 		SyncPeriod:         &syncPeriod,
 		NewClient:          newClientFunc,
diff --git a/controlplane/kubeadm/main.go b/controlplane/kubeadm/main.go
index c93fcecad2d4..e7ae580ed250 100644
--- a/controlplane/kubeadm/main.go
+++ b/controlplane/kubeadm/main.go
@@ -58,9 +58,9 @@ func init() {
 var (
 	metricsAddr                    string
 	enableLeaderElection           bool
-	leaseDuration                  time.Duration
-	renewDeadline                  time.Duration
-	retryPeriod                    time.Duration
+	leaderElectionLeaseDuration    time.Duration
+	leaderElectionRenewDeadline    time.Duration
+	leaderElectionRetryPeriod      time.Duration
 	watchNamespace                 string
 	profilerAddress                string
 	kubeadmControlPlaneConcurrency int
@@ -76,14 +76,14 @@ func InitFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
 
-	fs.DurationVar(&leaseDuration, "lease-duration", 15*time.Second,
-		"Interval at which non-leader candidates will wait to force acquire leadership (e.g. 20s)")
+	fs.DurationVar(&leaderElectionLeaseDuration, "lease-duration", 15*time.Second,
+		"Interval at which non-leader candidates will wait to force acquire leadership (duration string)")
 
-	fs.DurationVar(&renewDeadline, "renew-deadline", 10*time.Second,
-		"Duration that the acting master will retry refreshing leadership before giving up (e.g. 15s)")
+	fs.DurationVar(&leaderElectionRenewDeadline, "renew-deadline", 10*time.Second,
+		"Duration that the acting master will retry refreshing leadership before giving up (duration string)")
 
-	fs.DurationVar(&retryPeriod, "retry-period", 2*time.Second,
-		"Duration the LeaderElector clients should wait between tries of actions (e.g. 5s)")
+	fs.DurationVar(&leaderElectionRetryPeriod, "retry-period", 2*time.Second,
+		"Duration the LeaderElector clients should wait between tries of actions (duration string)")
 
 	fs.StringVar(&watchNamespace, "namespace", "",
 		"Namespace that the controller watches to reconcile cluster-api objects. If unspecified, the controller watches for cluster-api objects across all namespaces.")
@@ -119,9 +119,9 @@ func main() {
 		MetricsBindAddress: metricsAddr,
 		LeaderElection:     enableLeaderElection,
 		LeaderElectionID:   "kubeadm-control-plane-manager-leader-election-capi",
-		LeaseDuration:      &leaseDuration,
-		RenewDeadline:      &renewDeadline,
-		RetryPeriod:        &retryPeriod,
+		LeaseDuration:      &leaderElectionLeaseDuration,
+		RenewDeadline:      &leaderElectionRenewDeadline,
+		RetryPeriod:        &leaderElectionRetryPeriod,
 		Namespace:          watchNamespace,
 		SyncPeriod:         &syncPeriod,
 		NewClient:          newClientFunc,
diff --git a/main.go b/main.go
index 1bd197511a78..65f531436c5a 100644
--- a/main.go
+++ b/main.go
@@ -50,9 +50,9 @@ var (
 	// flags
 	metricsAddr                   string
 	enableLeaderElection          bool
-	leaseDuration                 time.Duration
-	renewDeadline                 time.Duration
-	retryPeriod                   time.Duration
+	leaderElectionLeaseDuration   time.Duration
+	leaderElectionRenewDeadline   time.Duration
+	leaderElectionRetryPeriod     time.Duration
 	watchNamespace                string
 	profilerAddress               string
 	clusterConcurrency            int
@@ -85,14 +85,14 @@ func InitFlags(fs *pflag.FlagSet) {
 	fs.BoolVar(&enableLeaderElection, "enable-leader-election", false,
 		"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.")
 
-	fs.DurationVar(&leaseDuration, "lease-duration", 15*time.Second,
-		"Interval at which non-leader candidates will wait to force acquire leadership (e.g. 20s)")
+	fs.DurationVar(&leaderElectionLeaseDuration, "lease-duration", 15*time.Second,
+		"Interval at which non-leader candidates will wait to force acquire leadership (duration string)")
 
-	fs.DurationVar(&renewDeadline, "renew-deadline", 10*time.Second,
-		"Duration that the acting master will retry refreshing leadership before giving up (e.g. 15s)")
+	fs.DurationVar(&leaderElectionRenewDeadline, "renew-deadline", 10*time.Second,
+		"Duration that the acting master will retry refreshing leadership before giving up (duration string)")
 
-	fs.DurationVar(&retryPeriod, "retry-period", 2*time.Second,
-		"Duration the LeaderElector clients should wait between tries of actions (e.g. 5s)")
+	fs.DurationVar(&leaderElectionRetryPeriod, "retry-period", 2*time.Second,
+		"Duration the LeaderElector clients should wait between tries of actions (duration string)")
 
 	fs.StringVar(&watchNamespace, "namespace", "",
 		"Namespace that the controller watches to reconcile cluster-api objects. If unspecified, the controller watches for cluster-api objects across all namespaces.")
@@ -149,9 +149,9 @@ func main() {
 		MetricsBindAddress:     metricsAddr,
 		LeaderElection:         enableLeaderElection,
 		LeaderElectionID:       "controller-leader-election-capi",
-		LeaseDuration:          &leaseDuration,
-		RenewDeadline:          &renewDeadline,
-		RetryPeriod:            &retryPeriod,
+		LeaseDuration:          &leaderElectionLeaseDuration,
+		RenewDeadline:          &leaderElectionRenewDeadline,
+		RetryPeriod:            &leaderElectionRetryPeriod,
 		Namespace:              watchNamespace,
 		SyncPeriod:             &syncPeriod,
 		NewClient:              newClientFunc,