I am trying to deploy spring boot application on kubernetes and connect to postgres which is on my localhost.
Spring boot deployment is fine. for postgres i did as
kind: Service
apiVersion: v1
metadata:
name: postgres
namespace: default
spec:
type: ExternalName
# https://docs.docker.com/docker-for-mac/networking/#use-cases-and-workarounds
externalName: host.docker.internal
ports:
- name: port
port: 5432kubectl get svc gives
postgres ExternalName <none> host.docker.internal 5432/TCP 9m13sI am database url as
jdbc:postgresql://postgres:5432/postgresSo spring boot deployed logs give exception as
java.net.UnknownHostException: postgresThis feature works only for Mac and Win Docker, so if you are running it on Linux -it's not gonna work.
Linux support for this hostname has been implemented and is likely coming in the next days/weeks: docker/libnetwork#2348
There are still some workarounds, while it's not released for Linux
I. you can create a file named .ddev/docker-compose.xdebug.yaml in your project with these contents:
# For Linux users; Docker has not yet supported the "host.docker.internal"
# convention that is used in ddev v0.18.0. But if you add this file as
# .ddev/docker-compose.xdebug.yaml it should sort that out.
# Note that the IP address in your environment might not be 172.17.0.1,
# Find out what address to use with "ifconfig docker0" or "ip addr show docker0 | grep inet"
version: "3"
services:
web:
extra_hosts:
# Find out what address to use with "ifconfig docker0" or "ip addr show docker0 | grep inet"
- "host.docker.internal:172.17.0.1"II. Use this image to forward TCP and UDP traffic to the docker host