我正在尝试使用 docker 运行一个 Ruby on Rails 项目,但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,从现在开始:
- 我已经安装了
docker
- 我已经安装了
docker-compose
- 我已经运行了成功运行的
docker-compose build
- 但是
docker-compose run --rm web bin/setup
停止了,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)
看这里的 stackoverflow 很多人说我必须确保 mysql 服务器正在运行。我怎样才能做到这一点? docker ps
的结果如下(省略了 COMMAND ans CREATED 列)
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
还有我的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
尝试将 database.yml 中的主机更改为 0.0.0.0 这解决了我的问题。
在服务器上下文中,0.0.0.0 表示本地计算机上的所有 IPv4 地址。如果主机有两个 IP 地址,192.168.1.1 和 10.1.2.1,并且主机上运行的服务器监听 0.0.0.0,则可以通过这两个 IP 访问它。
关于mysql - 无法通过套接字连接到本地 MySQL 服务器 '/var/run/mysqld/mysqld.sock,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/48344408/