【发布时间】:2020-05-04 13:42:23
【问题描述】:
我有三个 docker 容器(postgresql、adminer 和 go/migrate),并且我已经向主机公开了 adminer 和 postgres 端口。我可以在浏览器中访问管理员,postico 也可以连接到数据库。当我尝试从管理员内部连接到数据库时,它会抛出此错误:
SQLSTATE[08006] [7] could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting TCP/IP
connections on port 5432? could not connect to server: Address not available
Is the server running on host "localhost" (::1) and accepting TCP/IP connections on port 5432?
迁移容器也会抛出这个错误:
error: dial tcp: 127.0.0.1:5432: connect: connection refused
因此,显然容器之间的通信方式存在问题。我需要创建一个 docker 网络吗?
version: '3.1'
services:
db:
image: postgres
environment:
POSTGRES_DB: mydbname
POSTGRES_USER: mydbuser
POSTGRES_PASSWORD: mydbpwd
ports:
- "5432:5432"
migrate:
image: migrate/migrate
volumes:
- .:/migrations
command: ["-database", "postgres://mydbuser:mydbpwd@localhost:5432/mydbname?sslmode=disable", "-path", "/migrations", "up"]
links:
- db
adminer:
image: adminer
restart: always
ports:
- "8081:8080"
depends_on:
- db
【问题讨论】:
-
问题是在迁移容器上没有运行 postgres 服务。本地主机总是指容器本身而不是 docker 主机。将
localhost替换为db。
标签: postgresql docker adminer