How can I check what ingress controller I have on my kube and what is the default

You can check for pods implementing ingress controllers (actually with ingress in the name) with:

kubectl get pods --all-namespaces | grep ingress

And services exposing them with:

kubectl get service --all-namespaces | grep ingress

As @Prafull Ladha says, you won’t have an ingress controller by default. The documentation states that in “environments other than GCE/Google Kubernetes Engine, you need to deploy a controller as a pod”.