Minikube comes with ingress addon which uses NGINX Ingress Controller under the hood. This addon is capable of forwarding http/https traffic to a specific service but lacks the ability to route TCP/UDP traffic which might be necessary for messaging services, databases, etc. There's a related issue on github.
Due to the fact that there is no out of the box solution yet, here's workaround how to forward TCP and UDP traffic on Minikube:
Disable default ingress addon (if it's enabled) by executing following command:
$ minikube addons disable ingress ✅ ingress was successfully disabled
You can list addons by executing the following command:
$ minikube addons list ... - ingress: disabled ...
Deploy standalone nginx ingress controller to minikube:
kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/mandatory.yaml
Here's a link to the official documentation if you're wondering where it came from.
As a next step, we need to tweak the configuration of
nginx-ingress-controllerby enabling host network (more about host network in this article - Accessing Kubernetes Pods from Outside of the Cluster).
nginx-ingress-controllercontroller pod is running:
$ kubectl get deploy nginx-ingress-controller -n ingress-nginx $ NAME READY UP-TO-DATE AVAILABLE AGE nginx-ingress-controller 1/1 1 1 8m39s
Get current controller configuration and save it to a file. In this example, I will create a file in the current directory called
kubectl get deploy nginx-ingress-controller -n ingress-nginx -o yaml>> nginx-ingress-controller.yaml
Open it and add the following configuration:
spec.template.spec.hostNetwork = true
In my situation this was right above the containers key:
... spec: hostNetwork: true # <-- containers: - args: - /nginx-ingress-controller - --configmap=$(POD_NAMESPACE)/nginx-configuration - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services - --udp-services-configmap=$(POD_NAMESPACE)/udp-services - --publish-service=$(POD_NAMESPACE)/ingress-nginx - --annotations-prefix=nginx.ingress.kubernetes.io env: ...
Save the edited file and apply it by executing:
$ kubectl apply -f nginx-ingress-controller.yaml deployment.extensions/nginx-ingress-controller configured
Sidenote: sometimes it might be required to apply this config by using
$ kubectl apply -f nginx-ingress-controller.yaml --force deployment.extensions/nginx-ingress-controller configured
Enable TCP/UDP forwarding like it's showing in the example: