HestiaCP and DNS cluster

Levi

I have this setup:

NS1 - server A (dedicated DNS master)
NS2 - server B (dedicated DNS slave)
Web server - server C (shared web hosting server)

Now, magic is with DNS setup... NS1 and NS2 is in cluster mode master -> slave. These are completely separate servers serving only DNS (with hestiaCP).

How to add server C to that damn cluster? I want that domain and DNS added in server C would sync to NS1 and NS2.

Master <-> Master -> Slave ? But in this case DNSSEC would be broken.

HestiaCP forum is broken and I can't request help.

tentor

@LTniger said: How to add server C to that damn cluster? I want that domain and DNS added in server C would sync to NS1 and NS2.

DNS protocol provides single master -> multiple slaves synchronization by the usage of NS records and SOA record within each zone

You can read more here and here.

Vita

Well depending on what is used underneath by DNS service (PowerDNS, Bind or something else and the backend of the DNS service files/mysql).

1. You could use AXFR and have multiple Slaves, one master and multiple Slaves.
2. You could have all normal NS servers, but only one server let's say NS1 be a source of truth, then the others will rsync the zone files to rest of the servers.
3. You can have also all normal servers, but setup master/slave MySQL replication. So the first NS1 server will have a MySQL database with zones and records which will be replicated to NS2 and C via MySQL replication.

There are probably other ways to achieve this as well. The easiest may be to do the MySQL replication or file rsync, since then you will also copy the keys for DNSSEC, since AXFR may have issues with DNSSEC.

Levi

HestiaCP use bind9 for DNS. And server who receive new records is slave (server C). So, probably Master <-> Master setup.