What should I do if docker cannot access the host after changing its IP address?

What should I do if docker cannot access the host after changing the IP address?

Problem description

When creating a container Use the -p option to specify the port 8000 opened by the container (recommended learning: jQuery video tutorial)

Start in the Docker container with the command python manage.py runserver Django server

Use the docker ps command to get the IP mapping from the host to the container0.0.0.0:32564

Then access the address through the browser on the hostlocalhost :32564

The result is that Django in the container cannot be accessed

Solution

The command python manage.py runserver defaults to listening on 127.0.0.1 :8000

But the address 127.0.0.1 is a loopback address, which means "myself" and cannot be accessed externally. It can only be accessed by myself

So you need to specify the listening portpython manage. py runserver 0.0.0.0:8000, where 0.0.0.0 means listening to all addresses

and then use the host's browser to access the address localhost:32564, which is mapped to the container's localhost:8000

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