HowTo:Docker 172 Fix: Difference between revisions

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== The Fix ==
== The Fix ==
To apply the docker fix, create a file called /etc/docker/daemon.json with the following:
To apply the docker fix on the machine running docker, create a file called /etc/docker/daemon.json with the following:


<pre>
<pre>
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== UFW Fix ==
== UFW Fix ==
Also note that the fix to allow ufw to control ports in docker is also included as it should for any device on campus which needs a firewall.
coming soon

Latest revision as of 07:29, 9 September 2024

Background

VT uses a chunk of the 172 private network address space for it's internal private addressing. Docker comes pre-configured to also uses 172.17.0.0/12 which will cause the internal system to ignore any external 172.17.x.x/12 address trying to access the system. To fix this you need to reconfigure your docker to use a different address space like 192.168.x.x/16 or a 10.1.x.x/16 (tech also uses 10.6+.x.x for their networking so this is less safe although 10.5 and lower are guaranteed to be free).

The Fix

To apply the docker fix on the machine running docker, create a file called /etc/docker/daemon.json with the following:

{
  "default-address-pools":
  [
    {"base":"10.1.0.0/16","size":24}
  ]
}

Followed by:

sudo service docker restart

UFW Fix

coming soon