Guy and Jet, thank you for taking the time to respond. I appreciate it. -----Original Message----- From: Guy Waugh [mailto:gwaugh@xxxxxxxxxx] Sent: Wednesday, April 30, 2008 6:51 PM To: users@xxxxxxxxxxxxxxxx Subject: Re: High availability concept question Adam Martin wrote: > If I load balance between two 2.2 Apache HTTP Servers on two separate > physical servers, what type of device or software can I place in front > of the web servers to allow users to access either web server via one IP > Address? I did a quick search in the documentation but wasn't sure what > to look for. Would it be as simple as pointing the users to a router > configured with some type of forwarding? How do I prevent this device > from becoming a single point of failure? I know these questions are not > Apache specific, at least I don't think they, but after being a member > of this list for a couple of months and seeing the level of expertise on > this board I figured someone could point me in the right direction. I > am not asking for a how-to response, just concepts on where to start to > start looking or which documentation I should look at. Thanks. One (open source) solution would be to use an LVS load balancing server (http://www.linuxvirtualserver.org) to do the load balancing. If you want high availability (no single point of failure in the load balancer) couple LVS with heartbeat (http://www.linux-ha.org), so that if your active load balancer fails, the inactive load balancer takes over. There is a learning curve with both those technologies, so if you don't have much time (or even if you do), it might be worth a visit to http://www.ultramonkey.org, Simon Horman's project site, in which he supplies prebuilt packages to combine LVS and heartbeat together. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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