我正试着用docker运行一个RubyonRails项目,我不知道如何让这些东西工作,可能是因为我不熟悉docker。
我在Ubuntu 16.04上,从现在起:
我已安装docker
我已安装docker-compose
我已经成功运行了docker-compose build
但是docker-compose run --rm web bin/setup
停止,因为它不能
连接到mysql服务器
我得到的错误是:
#<Mysql2::Error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)>
Couldn't create database for {"adapter"=>"mysql2", "host"=>"localhost", "username"=>"root", "password"=>"root", "pool"=>5, "timeout"=>5000, "database"=>"project"}, {}
Created database 'project'
rails aborted!
Mysql2::Error: Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
看看stackoverflow,很多人说我必须确保mysql服务器正在运行。我该怎么做?
docker ps
的结果如下(省略命令ans CREATED columns)CONTAINER ID IMAGE STATUS PORTS NAMES
9f03056e2b54 project_web Up About an hour 0.0.0.0:3035->3035/tcp project_webpack
465cfbac7cbd mysql Up About an hour 3306/tcp project_mysql
我的
database.yml
:# SQLite version 3.x
# gem install sqlite3
#
# Ensure the SQLite 3 gem is defined in your Gemfile
# gem 'sqlite3'
#
default: &default
adapter: mysql2
host: localhost
username: root
password: root
pool: 5
timeout: 5000
development:
<<: *default
database: project_local
# Warning: The database defined as "test" will be erased and
# re-generated from your development database when you run "rake".
# Do not set this db to the same as development or production.
test: &test
<<: *default
database: project_test
production:
<<: *default
database: db/production.sqlite3
staging:
adapter: mysql2
host: <MY HOST>
database: project_dev
username: root
password: password
pool: 5
timeout: 5000
cucumber:
<<: *test
以及我的
docker-compose.yml
:version: '3.5'
services:
web:
build: .
image: project_web
container_name: project_web
# restart: always
command: >
./wait-for-it.sh db:3306 -- bash -c "
rails server -p 3000 -b 0.0.0.0 --pid /app/tmp/pids/server.pid
"
ports: ["3000:3000"]
volumes:
- .:/app
- ~/tmp:/host_tmp
- bundle_cache:/bundle
depends_on:
- db
environment:
- DB_HOST=db
- DB_USERNAME=root
- DB_PASSWORD=root
db:
container_name: project_mysql
image: mysql
environment:
- MYSQL_ROOT_PASSWORD=root
volumes:
- ./db-data:/var/lib/mysql
restart: always
volumes:
bundle_cache:
# Mount volume with default driver
最佳答案
在运行docker compose之前,请尝试运行容器本身:
docker run --rm -it mysql-server:latest bash
这将在容器中为您提供一个正常的shell环境。从那里你可以尝试mysql,配置你的服务器,启动或停止它,以及在一个“正常”的linux上可以做的所有事情。
注:如果你需要mor工具,尝试获取更新,然后安装你需要的。