Add disable leader election flag (#109)

Signed-off-by: Jian Qiu <jqiu@redhat.com>

deploy/spoke/deployment.yaml

@@ -24,6 +24,7 @@ spec:
           - "agent"
           - "--spoke-cluster-name=cluster1"
           - "--hub-kubeconfig=/spoke/hub-kubeconfig/kubeconfig"
+          - "--disable-leader-election"
         securityContext:
           allowPrivilegeEscalation: false
           capabilities:

pkg/cmd/spoke/agent.go

@@ -12,12 +12,17 @@ import (
 // NewWorkloadAgent generates a command to start workload agent
 func NewWorkloadAgent() *cobra.Command {
 	o := spoke.NewWorkloadAgentOptions()
-	cmd := controllercmd.
-		NewControllerCommandConfig("work-agent", version.Get(), o.RunWorkloadAgent).
-		NewCommand()
+	cmdConfig := controllercmd.
+		NewControllerCommandConfig("work-agent", version.Get(), o.RunWorkloadAgent)
+	cmd := cmdConfig.NewCommand()
 	cmd.Use = "agent"
 	cmd.Short = "Start the Cluster Registration Agent"
 
 	o.AddFlags(cmd)
+
+	// add disable leader election flag
+	flags := cmd.Flags()
+	flags.BoolVar(&cmdConfig.DisableLeaderElection, "disable-leader-election", false, "Disable leader election for the agent.")
+
 	return cmd
 }