What is the preferred way of setting up DNS when Fuel master doesn't have access to upstream DNS server?
Currently my openstack nodes can't access the DNS servers I specified in the fuel settings, because Fuel configures the openstack nodes to only uses the fuel master node as DNS server. From my understanding the fuel master node should be totally isolated and shouldn't have internet access.
Instead it would be nicer to have the specified DNS servers via the Fuel settings as 2nd and 3rd server on every openstack node's resolv.conf. The 1st DNS server being the fuel master node. This way even if the fuel master node can't access the upstream DNS servers, then still the openstack nodes would be able to access the upstream DNS servers. This way everything still works as expected because internal hostnames are still being resolved through our fuel master DNS server.
Is my above understanding correct and is it a proper way to handle this problem?
Any help greatly appreciated , thanks :)
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