I have Rails app in docker and also mariadb docker image.
But it fails during connection on
2021-11-05 8:27:49 3 [Warning] Aborted connection 3 to db: 'development' user: 'root' host: '172.18.0.4' (Got an error reading communication packets)``
My dockerfile is
FROM ruby:2.6.5
RUN apt-get update; apt-get install -y build-essential nodejs npm vim htop
RUN npm install --global yarn
RUN mkdir -p /app
WORKDIR /app
ENV BUNDLER_VERSION=2.1.4
COPY Gemfile Gemfile.lock /app/
RUN gem install bundler:2.1.4
RUN bundle install --jobs 20 --retry 5
RUN yarn install --silent --no-progress --no-audit --no-optional --check-files
#RUN bundle exec rake db:migrate
# Copy the main application.
COPY . ./
RUN rm -f /app/tmp/pids/server.pid
EXPOSE 3000
CMD ["rails", "server", "-b", "0.0.0.0"]
Mariadb dockerfile is (note that is for my localhost development so no passwords required)
FROM mariadb
RUN apt-get update; apt-get install -y build-essential vim htop
ENV MARIADB_ALLOW_EMPTY_ROOT_PASSWORD=yes
ENV MARIADB_DATABASE=development
ENV MARIADB_USER=root
COPY ./schema.sql /docker-entrypoint-initdb.d/a-schema.sql
COPY ./data.sql /docker-entrypoint-initdb.d/b-data.sql
And composer file
services:
app:
build: .
command: bash -c "rm -f tmp/pids/server.pid && bundle exec rails s -p 3000 -b '0.0.0.0'"
volumes:
- .:/app
ports:
- "3000:3000"
links:
- mariadb
environment:
WEBPACKER_DEV_SERVER_HOST: webpack
RAILS_ENV: development
RACK_ENV: development
DATABASE: development
DB_USERNAME: root
DB_HOST: mariadb
LOCALISATION: cs
depends_on:
- webpack
mariadb:
build:
context: .
dockerfile: Dockerfile.mariadb
restart: on-failure
volumes:
- ./mariadb:/var/lib/mysql
webpack:
build: .
command: ./bin/webpack-dev-server
#volumes:
# - .:/app
ports:
- '3035:3035'
environment:
NODE_ENV: development
RAILS_ENV: development
WEBPACKER_DEV_SERVER_HOST: 0.0.0.0
when I try to connect from app container to database using mysql_client it works, also app starts and checks for migrations but in next selects falls down.
Please any suggestions? It drives me mad
