Django AWS弹性豆茎给出；无法翻译主机名“；db"；解决；错误

我一直在尝试部署由Django、Postgresql和Nginx组成的docker。当我这样做的时候，它工作得很好 sudo docker-compose up Dockerfile

dockrun.aws.json

docker-compose.yml

我意识到的一件事是，当我在我的机器上使用docker compose时，我会运行3个不同的容器。但是在EB上，我只看到一个容器在运行

我想这是因为我从docker hub获取了我用这些文件构建的图像，不知何故导致了这3个容器成为一个，并且它搞乱了主机名的识别？我还是不太确定。非常感谢您的帮助。谢谢

dockrun.aws.json

应与

docker compose.yml

主机名“db”无法转换为地址的原因是

docker compose.yml

和

dockrun.aws.json

文件描述了不同的体系结构：

• docker compose.yml中有3个容器

• dockrun.aws.json中只有1个容器

因此，应用程序尝试解析

db

主机名，但找不到它，因为

db

未在

dockrun.aws.json

修复

dockrun.aws.json

因此，请更新您的

dockrun.aws.json

。您可以手动或使用方便的工具：

a） 手动更新 您可以使用示例，例如：

• **

b） 使用micahausler/container转换更新它 您可以尝试：

转换docker compose、ECS和Marathon配置 转换docker compose、ECS和Marathon配置

以下是它为您的案例输出的内容：

$container transform docker-compose.yml>dockrun.aws.json

dockrun.aws.json

{
    "containerDefinitions": [
        {
            "essential": true,
            "image": "postgres",
            "name": "db"
        },
        {
            "essential": true,
            "image": "nginx",
            "mountPoints": [
                {
                    "containerPath": "/etc/nginx/conf.d",
                    "sourceVolume": "_ConfigNginx"
                }
            ],
            "name": "nginx",
            "portMappings": [
                {
                    "containerPort": 8000,
                    "hostPort": 8000
                }
            ]
        },
        {
            "essential": true,
            "links": [
                "db:db"
            ],
            "mountPoints": [
                {
                    "containerPath": "/code",
                    "sourceVolume": "_"
                }
            ],
            "name": "web"
        }
    ],
    "family": "",
    "volumes": [
        {
            "host": {
                "sourcePath": "."
            },
            "name": "_"
        },
        {
            "host": {
                "sourcePath": "./config/nginx"
            },
            "name": "_ConfigNginx"
        }
    ]
}

{
    "containerDefinitions": [
        {
            "essential": true,
            "image": "postgres",
            "name": "db"
        },
        {
            "essential": true,
            "image": "nginx",
            "mountPoints": [
                {
                    "containerPath": "/etc/nginx/conf.d",
                    "sourceVolume": "_ConfigNginx"
                }
            ],
            "name": "nginx",
            "portMappings": [
                {
                    "containerPort": 8000,
                    "hostPort": 8000
                }
            ]
        },
        {
            "essential": true,
            "links": [
                "db:db"
            ],
            "mountPoints": [
                {
                    "containerPath": "/code",
                    "sourceVolume": "_"
                }
            ],
            "name": "web"
        }
    ],
    "family": "",
    "volumes": [
        {
            "host": {
                "sourcePath": "."
            },
            "name": "_"
        },
        {
            "host": {
                "sourcePath": "./config/nginx"
            },
            "name": "_ConfigNginx"
        }
    ]
}

注意：：当然，您应该修复缺少的设置，例如

db

和

nginx

容器的

memory

您可以完全忽略

网络

根据：

例如，假设您的应用程序位于名为

myapp

的目录中，并且您的

docker compose.yml

如下所示：

docker compose.yml

version: "3"
services:
  web:
    build: .
    ports:
      - "8000:8000"
  db:
    image: postgres
    ports:
      - "8001:5432"

version: '3'

services:
  db:
    image: postgres
    hostname: db
  web:
    restart: always
    build: .
    volumes:
      - .:/code
    hostname: web
    expose:
      - "8000"
    depends_on:
      - db
    links:
      - db:db
  nginx:
    image: nginx
    hostname: nginx
    ports:
      - "8000:8000"
    volumes:
      - ./config/nginx:/etc/nginx/conf.d
    depends_on:
      - web

运行

docker compose up

时，会发生以下情况：

创建一个名为

myapp\u default

的网络

容器是使用

web

的配置创建的。它以

web

的名称加入网络

myapp\u default

容器是使用

db

的配置创建的。它以

db

的名称加入网络

myapp\u default

因此，由于所有容器都链接到同一个

网络

，因此可以忽略它

docker compose.yml

version: "3"
services:
  web:
    build: .
    ports:
      - "8000:8000"
  db:
    image: postgres
    ports:
      - "8001:5432"

version: '3'

services:
  db:
    image: postgres
    hostname: db
  web:
    restart: always
    build: .
    volumes:
      - .:/code
    hostname: web
    expose:
      - "8000"
    depends_on:
      - db
    links:
      - db:db
  nginx:
    image: nginx
    hostname: nginx
    ports:
      - "8000:8000"
    volumes:
      - ./config/nginx:/etc/nginx/conf.d
    depends_on:
      - web

和

$container transform docker-compose.yml>dockrun.aws.json

将生成：

dockrun.aws.json

{
    "containerDefinitions": [
        {
            "essential": true,
            "image": "postgres",
            "name": "db"
        },
        {
            "essential": true,
            "image": "nginx",
            "mountPoints": [
                {
                    "containerPath": "/etc/nginx/conf.d",
                    "sourceVolume": "_ConfigNginx"
                }
            ],
            "name": "nginx",
            "portMappings": [
                {
                    "containerPort": 8000,
                    "hostPort": 8000
                }
            ]
        },
        {
            "essential": true,
            "links": [
                "db:db"
            ],
            "mountPoints": [
                {
                    "containerPath": "/code",
                    "sourceVolume": "_"
                }
            ],
            "name": "web"
        }
    ],
    "family": "",
    "volumes": [
        {
            "host": {
                "sourcePath": "."
            },
            "name": "_"
        },
        {
            "host": {
                "sourcePath": "./config/nginx"
            },
            "name": "_ConfigNginx"
        }
    ]
}

{
    "containerDefinitions": [
        {
            "essential": true,
            "image": "postgres",
            "name": "db"
        },
        {
            "essential": true,
            "image": "nginx",
            "mountPoints": [
                {
                    "containerPath": "/etc/nginx/conf.d",
                    "sourceVolume": "_ConfigNginx"
                }
            ],
            "name": "nginx",
            "portMappings": [
                {
                    "containerPort": 8000,
                    "hostPort": 8000
                }
            ]
        },
        {
            "essential": true,
            "links": [
                "db:db"
            ],
            "mountPoints": [
                {
                    "containerPath": "/code",
                    "sourceVolume": "_"
                }
            ],
            "name": "web"
        }
    ],
    "family": "",
    "volumes": [
        {
            "host": {
                "sourcePath": "."
            },
            "name": "_"
        },
        {
            "host": {
                "sourcePath": "./config/nginx"
            },
            "name": "_ConfigNginx"
        }
    ]
}

---

您在这两种情况下使用的是同一个docker compose文件吗？非常感谢您的帮助！但是现在我面临着由于以下原因而停止ECS任务的

错误：任务启动失败。（nginx:CannotCreateContainerError:daemon的错误响应：create./config/nginx:“./config/nginx”包含本地卷名的无效字符，仅“[a-zA-Z0-9]允许使用[a-zA-Z0-9.-]。如果您打算传递主机目录，请使用aws端的绝对路径db:web:）

。这是nginx.conf问题吗？再次感谢您！！@Jason，像往常一样，nginx config存储在类似

/etc/nginx/conf

的地方。对于您的情况，请尝试绝对路径而不是

/config/nginx

version: "3"
services:
  web:
    build: .
    ports:
      - "8000:8000"
  db:
    image: postgres
    ports:
      - "8001:5432"

version: '3'

services:
  db:
    image: postgres
    hostname: db
  web:
    restart: always
    build: .
    volumes:
      - .:/code
    hostname: web
    expose:
      - "8000"
    depends_on:
      - db
    links:
      - db:db
  nginx:
    image: nginx
    hostname: nginx
    ports:
      - "8000:8000"
    volumes:
      - ./config/nginx:/etc/nginx/conf.d
    depends_on:
      - web

{
    "containerDefinitions": [
        {
            "essential": true,
            "image": "postgres",
            "name": "db"
        },
        {
            "essential": true,
            "image": "nginx",
            "mountPoints": [
                {
                    "containerPath": "/etc/nginx/conf.d",
                    "sourceVolume": "_ConfigNginx"
                }
            ],
            "name": "nginx",
            "portMappings": [
                {
                    "containerPort": 8000,
                    "hostPort": 8000
                }
            ]
        },
        {
            "essential": true,
            "links": [
                "db:db"
            ],
            "mountPoints": [
                {
                    "containerPath": "/code",
                    "sourceVolume": "_"
                }
            ],
            "name": "web"
        }
    ],
    "family": "",
    "volumes": [
        {
            "host": {
                "sourcePath": "."
            },
            "name": "_"
        },
        {
            "host": {
                "sourcePath": "./config/nginx"
            },
            "name": "_ConfigNginx"
        }
    ]
}