DNS HA

Users
1

After configuring MAAS with two region/rack controllers, everything works as expected but the list of DNS servers specified in a subnet is merged with the list of the IPs of all rack controllers.

For example:

  • controller 1 - 192.168.0.1
  • controller 2 - 192.168.0.2
  • VIP - 192.168.0.3
  • subnet’s DNS servers: 192.168.0.3,8.8.8.8

After deploying, the servers will have all 4 IP’s in random order specified as DNS servers in resolv.conf

This creates a problem in case either controller 1 or 2 go down and the server has their primary IPs configured as the current DNS server. The servers will rely on DNS timeouts to switch to the next server and I would like to avoid that because they could either use the VIP or the external DNS server and never experience issues.

Is there a way to force MAAS to not add all the controller’s IPs to the DNS list in DHCP?

2

Hi @gtirloni , sorry for the late reply. You have Allow DNS resolution set to true in that subnet, right?

3

Please set ‘Allow DNS resolution’ to False and keep the VID in the dns servers. Let me know if that worked

4

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