将 Docker Rails 6 应用程序部署到 AWS ECS 时出现 RDS 相关错误

Question

我正在尝试将 Rails 6 应用程序部署到 AWS ECS。

部署失败，出现以下错误：

health_check failed: Plugin http could not be loaded: Error loading shared library lib/mariadb/plugin/http.so: No such file or directory

Gemfile

gem 'rails', '~> 6.0.0'
gem 'mysql2'

Gemfile.lock

mysql2 (0.5.3)
rails (6.0.3.6)

我没有在我的应用程序中使用 MariaDB，但根据 the mysql2 gem author, it might be necessary to add MariaDB dependencies。

You may need to install a package such as libmariadb-dev, libmysqlclient-dev, mysql-devel, or default-libmysqlclient-dev; refer to your distribution's package guide to find the particular package. The most common issue we see is a user who has the library file libmysqlclient.so but is missing the header file mysql.h -- double check that you have the -dev packages installed.

Dockerfile

###############################
FROM ruby:2.6.3-alpine

ARG RAILS_ENV
ENV RAILS_ENV ${RAILS_ENV}

RUN apk add --update --no-cache \
  build-base \
  openssl \
  mysql-dev \
  mariadb-dev \
  git \
  tzdata && \
  cp /usr/share/zoneinfo/Asia/Tokyo /etc/localtime

WORKDIR /app
ADD Gemfile* /app/

RUN gem install --no-document bundler
RUN bundle install -j4 --retry 3 \
  && rm -rf /usr/local/bundle/cache/*.gem \
  && find /usr/local/bundle/gems/ -name "*.c" -delete \
  && find /usr/local/bundle/gems/ -name "*.o" -delete

# Add the Rails app
ADD . /app

WORKDIR /app

CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]

我用以下方法构建了我的应用程序：

docker-compose build --no-cache

任何帮助将不胜感激。

Answer 1

错误与数据库地址格式有关。

为了让它工作，我删除了 http:// 前缀和尾随 / 到数据库地址环境变量。

我改了：

DB_HOST=http://abcdef-rds.xyz.ap-northeast-1.rds.amazonaws.com/

至：

DB_HOST=abcdef-rds.xyz.ap-northeast-1.rds.amazonaws.com

将 Docker Rails 6 应用程序部署到 AWS ECS 时出现 RDS 相关错误

RDS related error when deploying a Docker Rails 6 app to AWS ECS

ruby-on-rails

amazon-ecs

amazon-rds

mariadb

docker