问题
I am getting this error while running my rails app with docker and docker-compose Error connecting to Redis on 127.0.0.1:6379 (Errno::ECONNREFUSED)
Please find my Docker file
# Copy the Gemfile as well as the Gemfile.lock and install
# the RubyGems. This is a separate step so the dependencies
# will be cached unless changes to one of those two files
# are made.
COPY Gemfile Gemfile.lock ./
RUN gem install bundler && bundle install --jobs 20 --retry 5
# Copy the main application.
COPY . ./app
# Expose port 3000 to the Docker host, so we can access it
# from the outside.
EXPOSE 3000
# The main command to run when the container starts. Also
# tell the Rails dev server to bind to all interfaces by
# default.
CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]
Please find my docker-compose.yml file
version: "2"
services:
redis:
image: redis
command: redis-server
ports:
- "6379:6379"
postgres:
image: postgres:9.4
ports:
- "5432"
app:
build: .
command: rails server -p 3000 -b '0.0.0.0'
volumes:
- .:/app
ports:
- "3000:3000"
links:
- postgres
- redis
- sidekiq
sidekiq:
build: .
command: bundle exec sidekiq
depends_on:
- redis
volumes:
- .:/app
env_file:
- .env
Thanks in Advance!
回答1:
I use a docker-compose and i add in .env file
REDIS_URL=redis://redis:6379/0
回答2:
Links are not required to enable services to communicate - by default, any service can reach any other service at that service’s name.
According to your docker-compose.yaml file you can access you redis container on 127.0.0.1:6379 only from host machine.
Containers communicate with each other in their network, so you can access your redis container on redis:6379 from rails app container.
来源：https://stackoverflow.com/questions/48802444/rails-docker-sidekiq-error-connecting-to-redis-on-127-0-0-16379-errnoe