postgresql - 如何从外部主机连接到使用 docker-compose 创建的 postgres

Question

我认为这个问题应该很容易解决，但我正在拉我的头发。我有以下 docker-compose:

version: "3"
services:

  pg-db:
    image: postgres:11
    environment:
      POSTGRES_PASSWORD: "postgres"
      POSTGRES_USER: "postgres"
      POSTGRES_DB: "postgres"
    ports:
      - 5432:5432
    #network_mode: host

然后我运行 docker-compose up然后启动容器

pg-db_1_78e7ec4a95e6 | 2020-02-21 13:53:53.928 UTC [1] LOG:  database system is ready to accept connections

我可以用 docker exec 连接到它

docker exec -it docker_pg-db-compose_1_78e7ec4a95e6 psql -h pg-db -U postgres postgres

但是我无法通过“裸” psql 连接到它:

psql postgresql://postgres:postgres@localhost:5432/postgres

psql: could not connect to server: Connection refused
    Is the server running on host "localhost" (::1) and accepting
    TCP/IP connections on port 5432?

psql postgresql://postgres:postgres@pg-dg:5432/postgres
psql: could not translate host name "pg-db" to address: Name or service not known

我试过 network_mode但它没有帮助。

Answer 1

启动 docker-compose 后，您需要通过以下方式获取 docker 容器 ip:
docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}}' container_name_or_id
那么你可以做postgresql://postgres:postgres@<container idp>:5432/postgres你应该能够连接到它