Issue
I have created a spring app and i want to connect it to redis server which is deployed on docker-compose i put the needed properties as follow : spring.redis.host=redis spring.redis.port=6379
But i keep getting a ConnexionException so how can i Know on which host redis is running and how to connect to it.
Here is my docker-compose file :
version: '2'
services:
redis:
image: 'bitnami/redis:5.0'
environment:
# ALLOW_EMPTY_PASSWORD is recommended only for development.
- ALLOW_EMPTY_PASSWORD=yes
- REDIS_DISABLE_COMMANDS=FLUSHDB,FLUSHALL
ports:
- '6379:6379'
volumes:
- 'redis_data:/bitnami/redis/data'
volumes: redis_data: driver: local
Solution
From docker compose documentation
By default Compose sets up a single network for your app. Each container for a service joins the default network and is both reachable by other containers on that network, and discoverable by them at a hostname identical to the container name
If you want to access redis by container name ('redis' in this case), the Spring boot application has also be deployed as a docker compose service, but it doesn't appear in the docker-compose file that you've provided in the question, so please add it.
Alternatively If you're trying to run the spring boot application on host machine, use 'localhost' instead of 'redis' in order to access the redis container.
Answered By - Mark Bramnik
Answer Checked By - Mary Flores (JavaFixing Volunteer)
