HowTo:Docker 172 Fix: Difference between revisions
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(Created page with "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...") |
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Background | == 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). | 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, create a file called /etc/docker/daemon.json with the following: | To apply the docker fix, create a file called /etc/docker/daemon.json with the following: | ||
<pre> | |||
{ | { | ||
"default-address-pools": | "default-address-pools": | ||
| Line 10: | Line 13: | ||
] | ] | ||
} | } | ||
</pre> | |||
Followed by: | Followed by: | ||
sudo service docker restart | sudo service docker restart | ||
Revision as of 11:21, 25 March 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, 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