If your load balancer can do a port 80 check (or whatever port you are using), you can block port 80 with pf to stop traffic flow, do your updating, and return it to service by unblocking the port.
Stefan Caunter :: Senior Systems Administrator :: TOPS e: [email protected] :: m: (416) 561-4871 www.thestar.com www.topscms.com From: [email protected] [mailto:[email protected]] On Behalf Of Mohan Rao Sent: September-15-10 9:26 AM To: [email protected] Subject: Probing to see if Varnish is Alive. Hi, Is there a way to probe a varnish server to see if it is alive ? We have a couple of varnish servers that are load balanced. We would like the load balancer to stop sending traffic to a particular varnish server if we are updating that server. Is there a recommended way to do this ? Thanks & Regards, Mohan
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