Alfredo Ramos wrote:
Is it possible to modify the configuration to add a new server without
restarting haproxy?
It seems to me so far, that haproxy always requires a restart whenever
a new server is added or removed, which will bring the whole site
down, and if using session persistence, then all the session
information will be lost. Which will make it useless for high
availability sites.
Is this actually the case? Can anyone illuminate me?
Like a lot of things, this is true and false :)
Yes, haproxy doesn't support live reconfiguration (yet?),
however the restart/reload mechanism used allow for a live reconfiguration
without downtime iirc
See "4.3 Hot reconfiguration" in
http://haproxy.1wt.eu/download/1.3/doc/architecture.txt