[Dnsmasq-discuss] Fail-over or high availability for dnsmaasq

[marcus coleman]

Hello All


Is there a configuration for dnsmasq to have a primary and fail-over. Meaning if my dnsmasq server (dhcp and dns) go offline can another machine running dnsmasq be configured to ?

"takeover" dhcp/dns roles of the primary ?


thanks for any help in advance!

[Scott Mead]

Post by marcus coleman
Hello All
Is there a configuration for dnsmasq to have a primary and fail-over.
Meaning if my dnsmasq server (dhcp and dns) go offline can another
machine running dnsmasq be configured to ?
"takeover" dhcp/dns roles of the primary ?

I've done this, although somewhat manually. Essentially, I use Ansible
to ensure that my configs are all in sync. Then, I use pacemaker to
detect a 'host down' situation. This moves an IP alias and then clients
start hitting that host.

You may be able to stick nginx in front of dnsmasq and load-balance....
but, if you're using dynamic DNS updates and you rely on a leases file,
you could get different answers based on which server you hit (that'd be
bad). If all you are doing is DNS definitions and nothing dynamic, I
don't see why it wouldn't work...

Post by marcus coleman
thanks for any help in advance!
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