Minikube expose MySQL running on localhost as service

Question

I have minikube version v0.17.1 running on my machine. I want to simulate the environment I will have in AWS, where my MySQL instance will be outside of my Kubernetes cluster.

Basically, how can I expose my local MySQL instance running on my machine to the Kubernetes cluster running via minikube?

Answer 1

Kubernetes allows you to create a service without selector, and cluster will not create related endpoint for this service, this feature is usually used to proxy a legacy component or an outside component.

1. Create a service without selector

   apiVersion: v1 kind: Service metadata:     name: my-service spec:     ports:         - protocol: TCP           port: 1443           targetPort: <YOUR_MYSQL_PORT> 

2. Create a relative Endpoint object

   apiVersion: v1 kind: Endpoints metadata:     name: my-service subsets:     - addresses:         - ip: <YOUR_MYSQL_ADDR>       ports:         - port: <YOUR_MYSQL_PORT> 

3. Get service IP

   $ kubectl get svc my-service NAME         CLUSTER-IP     EXTERNAL-IP   PORT(S)   AGE my-service   <SERVICE_IP>   <none>        1443/TCP    18m 

4. Access your MYSQL from service <SERVICE_IP>:1443 or my-service:1443

Answer 2

As of minikube 1.10, there is a special hostname host.minikube.internal that resolves to the host running the minikube VM or container. You can then configure this hostname in your pod's environment variables or the ConfigMap that defines the relevant settings.