How can Kubernetes containers access local IP addresses…

In Kubernetes, containers can access the local IP through the following methods:

1. network that is hosting
2. Enable host network.

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  hostNetwork: true
  containers:
  - name: my-container
    image: my-image

1. IP address of the host
2. IP address of the host

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
  - name: my-container
    image: my-image
    env:
    - name: HOST_IP
      valueFrom:
        fieldRef:
          fieldPath: status.hostIP

1. The internal host within the Docker container.
2. The host.docker.internal address

Please be aware that accessing the host IP address will result in a tight coupling between the container and the host, which could affect the portability and scalability of the container. Therefore, careful consideration should be given to whether direct access to the local IP is truly necessary, ensuring both security and maintainability.