[2.0, 2.1] update docs to explain how to disable reverse dns generation for a subnet

[Nathaniel W. Turner]

It seems MAAS configures BIND to serve a zone for every subnet it discovers. However, some nodes may have additional interfaces connected to subnets not under MAAS control, and DNS queries for PTR records in those subnets should really be forwarded to the upstream DNS servers.

If there is a way to tell MAAS to not serve these zones, it's not easy to find.

Versions:
maas 2.1.0~beta2+bzr5454-0

[LaMont Jones (lamont)]

There is, and it's clearly not well documented.

Using the CLI, you can say:
    maas SESSION subnet update ID rdns_mode=0
Where ID is the subnet id, probably found from something like:
    SUBNET_CIDR=10.0.3.0/24
    maas SESSION subnets read | jq -r '.[] | select(.cidr == "'$SUBNET_CIDR'").id'

Valid values for rdns_mode are:
    2: (default) -- generate reverse DNS, and a parent zone containing any rfc 2317 glue if needed
    1: generate reverse DNS, but no parent glue zone (they're doing that)
    0: do not generate reverse DNS

Leaving this bug open as a documentation bug.

[LaMont Jones (lamont)]

See also bug #1634595.

[Adam Collard (adam-collard)]

This bug has not seen any activity in the last 6 months, so it is being automatically closed.

If you are still experiencing this issue, please feel free to re-open.

MAAS Team

[Nathaniel W. Turner (nturner)]

Were the docs updated?