Unable to connect from Spring Boot to Dockerized Redis

Question

I have a spring boot rest service running on windows 10 machine and I have Redis running on a docker container. Now, I want my Spring Boot to connect to the redis container, however, it is always giving me the following error:

java.net.UnknownHostException: redis

My application.properties, contains the following:

# Set Redis server and Jedis settings
spring.redis.host = redis
spring.redis.port = 6379
spring.redis.password = test123
spring.jedis.connection.timeout = 60

and this is my docker-compose.yml:

version: '2'

networks:
  app-tier:
    driver: bridge

services:
  redis:
    image: 'bitnami/redis:latest'
    container_name: 'redis-cache'
    environment:
       - REDIS_PASSWORD=test123
       - REDIS_DISABLE_COMMANDS=FLUSHDB,FLUSHALL
    labels:
      kompose.service.type: nodeport
    ports:
      - '6379:6379'
    volumes:
      - 'redis_data:/bitnami/redis'
    networks:
      - app-tier
volumes:
  redis_data:
    driver: local

Answer 1

Please set spring.redis.host = localhost in application.properties.

Since the current value set is 'redis', application is not able to find this host and hence you are getting unknownhost exception.