Some questions regarding setting a RDNS on a DNS cluster using BIND/WHM/cPanel + WHM DNS Only.
Objective
Setting up a DNS Cluster of:
East US | Xen | CentOS 6.5 | with WHM/cPanel VPS | 2 IPv4 | Main server West US | Xen | CentOS 6.5 | with WHM DNS ONLY | 2 IPv4 | Nameserver West EU | Xen | CentOS 6.5 | with WHM DNS ONLY | 1 IPv4 | Nameserver Europe 5 IPv4 IPs
Goal
Making 3 white label (custom reverse DNS) geographically placed nameservers. One authoritative, secondary and tertiary.
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Questions about Nameserver IPs
Is there another way to link 3 geographically different nameservers and use but 3 IPs using SNI (WHM/cPanel allows domains to share IPs in that fashion)?
IPv4 IPs are becoming more scarce. :/
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Questions about BIND zone syntax:
For Reverse DNS of nameservers is it proper to identify the nameservers? For example:
1.168.192-rdns.ns1.my.custom.whitelabel.nameserver.tld. 1.168.192-rdns.ns2.my.custom.whitelabel.nameserver.tld. 1.168.192-rdns.ns3.my.custom.whitelabel.nameserver.tld.
Or reverse back to the hostname, instead?:
1.168.192.in-add.arpa-hostname1.domain.tld. 1.168.192.in-add.arpa-hostname2.domain.tld. 1.168.192.in-add.arpa-hostname3.domain.tld.
For PTR, and using the last octet, is it using IPs like this:
NS1 Nameserver IP: 192.168.1.0.100 NS2 Nameserver IP: 192.168.1.0.101 NS3 Nameserver IP: 192.168.1.0.102
In the reverse DNS zone like this?
0.1.168.192.in-add.arpa IN NS ns1.my.custom.whitelabel.nameserver.tld. 0.1.168.192.in-add.arpa IN NS ns2.my.custom.whitelabel.nameserver.tld. 0.1.168.192.in-add.arpa IN NS ns3.my.custom.whitelabel.nameserver.tld. 100 IN PTR hostname1.domain.tld. ; main site hostname 101 IN PTR hostname2.domain.tld. ; second site hostname 102 IN PTR hostname3.domain.tld. ; third site hostname
PTR is still a tad confusing to me, as it's not a sub-domain pointer but acts like forwarding, instead.
