Monday, September 30, 2024

dhcpd with failover

I'm trying to figure out how to configure a redundant dhcp server.

In dhcpd(8) I see that the options -y and -Y implement "synchronisation of the
lease allocations to a number of dhcpd daemons", anyway, in dhcpd.conf(5)
I can't find anywhere any statement that sets the dhcp server as 'primary'
or 'backup'.

Is a carp-like mechanism put in place with synchronisation?
That is, in carp I can see the "state master" or "state backup",
I would expect something similar for dhcpd's in synchronisation mode.

Or, dhcrelay(8) must be used for redundancy? If yes, how?

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