> On 15/03/2021 20:54 Paterakis E. Ioannis <j...@uoc.gr> wrote: > > > On 15/3/2021 6:09 μ.μ., Steven Varco wrote: > > Hi John > > > > Thanks for you input. > > > > So you basically state that („physically“) separating the director servers > > from keepalive/haproxy servers is the only option? > > I would like to avoid setting up two additional machines for that whenever > > possible, as any node more in the chain potentially is another point of > > failure… ;) > > Nope, it's not the only option. You can always have all three daemons > (keepalived/haproxy/director) on each machine. Keepalived will handle > the floating ip job, haproxies will have no problems with the floating > ip, the directors will always be binded to the static ips of the > machines and have their setup in the haproxies. That's all. > > But, if you plan to make a Highly available environment, u have to > consider splitting your services to different VMs, and them to different > hypervisors in order to be as Highly available as you can.... > > John
The point of dovecot director is that it acts as a proxy that always routes users to same backend. You can use keepalived, if it supports external commands, to maybe tell director which backends are up / down. You should have separate server for director(s) and each backend. Aki
