Joachim Schrod wrote:
Actually, that's where drbd comes in. It's essentially a RAID1 over the network.
Did you have failovers and they were successful?
I tested failovers in the lab and it worked fine. I didn't have any "real" failovers as we decided there was no need for a HA DHCP setup.
I thought that dhcpd keeps its state information in memory (at least partly) and that therefore drdb is not sufficient. I'm going to look that up, if all state is on disk Linux-HA might really be a possibility.
To be honest, I don't know - but I would have thought that changes in leases are written to disk immediately. DHCP is not exactly a heavily loaded daemon, so not much reason for buffering a lot. AFAICS, the only state information you need is the list of currently active leases? /Per Jessen, Zürich -- http://www.spamchek.com/ - managed anti-spam and anti-virus solution. Let us analyse your spam- and virus-threat - up to 2 months for free.