DNS cluster Setup assistance needed

rotame

• October 28, 2017 11:10

Hi I have 3 CPANEL servers srvA, srvB, srvC and 2 VPS which use DNSonly I want to enable DNS cluster so I am doing the followings : I use a domain for DNS purposes lets say that be dnsdomain For this domain I will use 2 IPs as ns in two diferrent VPS and there will be installed DNSonly So my confing will be : srvA stand alone CPANEL |----- >dns1srv.dnsdomain ( DNS VPS1 ) synchronize mode |---->dns2srv.dnsdomain (DNS VPS2 ) synchronize mode In my registar as registared name server I will use ns1.srvAhostname ns2.srvAhostname dns1srv.dnsdomain dns2srv.dnsdomain srvB stand alone CPANEL |----- >dns1srv.dnsdomain ( DNS VPS1 ) synchronize mode |---->dns2srv.dnsdomain (DNS VPS2 ) synchronize mode In my registar as registared name server I will use ns1.srvBhostname ns2.srvBhostname dns1srv.dnsdomain dns2srv.dnsdomain srvC stand alone CPANEL |----- >dns1srv.dnsdomain ( DNS VPS1 ) synchronize mode |---->dns2srv.dnsdomain (DNS VPS2 ) synchronize mode In my registar as registared name server I will use ns1.srvChostname ns2.srvChostname dns1srv.dnsdomain dns2srv.dnsdomain etc Questions : - This configuration its OK or for every server need to use different VPS DNSonly ? - If my main server fails example srvA my DNS records still to reported by dns1srv and dns2srv with this way avoiding service failures; as example www service serviced by other server, mail server by other server ? - If my srvB fails and all services hosted there what happens when someone sends me an email ? I will loose it or I will get it when my srvB is online again ?

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  rotame

  • October 28, 2017 16:44

  One more question I have a client in srvC who wants private name servers I will setup his account at srvC As nameservers I will use ns1.clientdomain & ns2clientdomain but as IPs? The IPs for this must be local from srvC or I can use DNS VPS1 & DNS VPS2 ips?

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  cPanelMichael

  • October 31, 2017 15:57

  Hello,

  This configuration its OK or for every server need to use different VPS DNSonly ?

  
  Yes, this is an acceptable configuration. However, make sure you are using the correct IP addresses for your name servers at the registrar. EX: ns1.srvAhostname ns2.srvAhostname dns1srv.dnsdomain dns2srv.dnsdomain
  The NS1/NS2 IP addresses should match the IP addresses associated with DNS1SRV/DNS2SRV.

  If my main server fails example srvA my DNS records still to reported by dns1srv and dns2srv with this way avoiding service failures; as example www service serviced by other server, mail server by other server ?

  
  The DNS cluster only adds redundancy for DNS. You'd have to setup or restore the cPanel account from a backup on a new cPanel server and then connect that new cPanel server to the existing DNS cluster. Or, you could update the "A" records manually in the domain name's DNS zone on the DNS-Only servers.

  If my srvB fails and all services hosted there what happens when someone sends me an email ? I will loose it or I will get it when my srvB is online again ?

  
  You would lose the email if the server is not active at all, unless the remote mail server queues the email attempts delivery again once it detects your server is running.

  I have a client in srvC who wants private name servers. I will setup his account at srvC As nameservers I will use ns1.clientdomain & ns2clientdomain but as IPs? The IPs for this must be local from srvC or I can use DNS VPS1 & DNS VPS2 ips?

  
  Yes, this is acceptable. You'd need to use the same IP addresses that you use for the name servers associated with your DNS cluster. Thank you.

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  brt

  • November 04, 2017 03:15

  Why don't you share the two nameservers with -all- of your servers and have the same two standardized nameserver records for all of your clients/websites, regardless of which server they're utilizing?

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