Docker 连接到具有特定主机地址的postgres

Question

I want to connect to container with postgres DB by some unique name instead 127.0.0.1 address.

There is specific flag --add-host=name:ipaddrs that will add routing to /etc/hosts file internally in container, but it isn't that I want.

docker run --rm --add-host=postgresdb:127.0.0.1 -p 5430:5432 -d --name=docker-postgres-image -e DB_HOST=postgresdb -e POSTGRES_USER=postgres -e POSTGRES_PASSWORD=pspostgres -e POSTGRES_DB=app postgres

How I can change default routing to connect to container from localhost(127.0.0.1):5430 to any character words for ex. postgres-db-service:5430?

Answer 1

I hope understand you. I think you need ahostname in your container, you can do this using the flag --hostname. So your command will look like this:

docker run -d --rm --hostname postgres-db-service \
    -p 5430:5432 \
    --name=docker-postgres-image \
    -e DB_HOST=postgres-db-service \
    -e POSTGRES_USER=postgres \
    -e POSTGRES_PASSWORD=pspostgres \
    -e POSTGRES_DB=app \
    postgres