Fast Knowledge: Kubernetes port forwarding

When i finally discovered the option in Kubernetes to forward a port of a pod to localhost, it changed the way i started working with my cluster.

I often have my MongoDB, MYSQL or Elasticsearch inside of a Kubernetes cluster, running on pods. Naturally it has no public access point or port forwarding to the outside of the cluster. But sometimes you want to use a Client to access your Database or you want to use your cli locally to find errors.

The solution is

kubectl port-forward localport:podport

This allows you to easily forward your mongoDB Port to localhost for example

kubectl port-forward pods/mongo-0 27017:27017

or

kubectl port-forward deployment/mongo-0 27017:27017

Then you can use use your MongoDB Client (e.g Robo 3T) to connect to localhost:27017 and you are connected to your remote NOSQL Database.

For more information look here