Yes. Typically you need the option --cloud-provider=aws on:

• All kubelets
• kube-apiserserver
• kube-controller-manager

Also, you have to make sure that all your K8s instances (master/nodes) have an AWS instance role that allows them to create/remove ELBs and routes (All access to EC2 should do).

Then you need to make sure all your nodes are tagged:

• Key: KubernetesCluster, Value: 'your cluster name'
• Key: k8s.io/role/node, Value: 1 (For nodes only)
• Key: kubernetes.io/cluster/kubernetes, Value: owned

Make sure your subnet is also tagged:

• Key: KubernetesCluster, Value: 'your cluster name'

Also, your Kubernetes node definition, you should have something like this:

ProviderID: aws:///<aws-region>/<instance-id>

Generally, all of the above is not needed if you are using the Kubernetes Cloud Controller Manager which is in beta as of K8s 1.13.0