Container IP address reuse

[unbreakabl3]

Hello dear all,
does anyone know if it is possible to reuse the IP address? I created a pod, which got an IP 192.168.64.4. I deleted this pod and created it again. It got an IP 192.168.64.5. And so on and so on.

Is there a way to stop increasing the IPs sequentially, if they are not in use?

My problem is that I am running a web server and instead of refreshing the browser, I need to update the IP in the address bar each time.

Thank you in advance.

[wildfiremedia]

How about binding -p 127.0.0.1:8080:4321 to the container, then you can access localhost:8080 from the host's browser?

[wildfiremedia]

1. Other approach is having your code e.g. application server to retrieve IP address to your endpoint localhost:4321/whatismyip.

2. If your container ID are unique --name test1, you could use JSON output from container ls --format json | jq and you can extract IP address. e.g. open http://192.168.0.32.

Or more precise

container ls --format json | jq -r '
  .. | objects
  | select(has("networks"))
  | .networks[]
  | select(.hostname != null and (.hostname | test("test1")))
  | .address
  | split("/")[0]
'

[unbreakabl3]

Thank you very much for the workarounds. Appreciate 🙏🏻.

But is it true to say that the answer to my original question "Is there a way to stop increasing the IPs sequentially, if they are not in use?" is - no, it’s not possible?

[wildfiremedia]

Most likely, there is no way to retain or allocate IP addresses. I tried using DNS according to the guide, but it doesn’t seem to work.

container system dns create test
container system dns default set test

[wildfiremedia]

An update, I have cleared my DNS cache on macOS and able to access http://mycontainer.test add port if any. The cleanest way to setup.

[unbreakabl3]

Amazing. Appreciate!