On 04/28/13 at 01:00PM -0400, S Ahmed wrote: > Hi, > > 1. Is there a way to update the config file without having to stop/start > the haproxy service? e.g. when I need to update the ip addresses of the > backend servers (using ec2) > > 2. During migrations, say I have 10 backend servers, what if I want to stop > taking requests for 5 of the 10 servers, is the best way to update the > config and just remove them? Or is there a smoother transition somehow > that won't causes errors during the transition? > i.e. would it be possible to finish the requests, but stop responding to > new requests for those 5 servers I want to take offline.
See https://code.google.com/p/haproxy-docs/wiki/disabled You can restart HAProxy by e.g.:-D -p /var/run/haproxy.pid -f /etc/haproxy.cfg -sf $(cat /var/run/haproxy.pid) Alternatively you could use the control socket by using socat: https://code.google.com/p/haproxy-docs/wiki/UnixSocketCommands So e.g. "disable server backend1/server1" Or even via the stats interface with "stats admin if ...". -- Regards, Christian Ruppert
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