Minikube pod cannot access localhost service - minikube

Question

I am running Minikube deployment where the pod [gitlab-runner] is trying to execute POST against a local gitlab API in my machine but it is getting the following error:
WARNING: Checking for jobs... failed runner=3bS1tafj status=couldn't execute POST against http://127.0.0.1/api/v4/jobs/request: Post "http://127.0.0.1/api/v4/jobs/request": dial tcp 127.0.0.1:80: connect: connection refused
WARNING: Checking for jobs... failed runner=3bS1tafj status=couldn't execute POST against http://127.0.0.1/api/v4/jobs/request: Post "http://127.0.0.1/api/v4/jobs/request": dial tcp 127.0.0.1:80: connect: connection refused
WARNING: Checking for jobs... failed

Answer 1

In K8S pods can communicate with each other using localhost, localhost is the network namespace inside the pod itself!!!!!
You can't use localhost to communicate from the pod to the "outside" world in this way.
What can you do?
You can add hostNetwork: true to your Pods description.
HostNetwork - Controls whether the pod may use the node network namespace.
The hostNetwork setting applies to the Kubernetes pods.
When a pod is configured with hostNetwork: true, the applications running in such a pod can directly see the network interfaces of the host machine where the pod was started.
apiVersion: v1
kind: Pod
metadata:
name: nginx
spec:
hostNetwork: true