I can't speak for what is the best solution, but we've had fairly good experiences using my custom Apache connector that connects to only a single cluster instance, and having 2 front end Apache servers (which are load balanced using a hardware load balancer) and 2 backend Apache/CF servers which are also load balanced using the same hardware load balancer. The image requests get served by the front end servers, and the CF requests get forwarded to the backend servers through the load balancer. If an instance is offline, it gets taken offline by the load balancer and requests are no longer sent to it until it comes back up.
I had to modify the Apache connector a bit to make this work. I basically added a new config command which restricts which instances it's allowed to connect to. Russ > -----Original Message----- > From: AJ Mercer [mailto:[EMAIL PROTECTED] > Sent: Wednesday, May 14, 2008 6:58 PM > To: CF-Talk > Subject: Re: load balancing / failover > > So if money was not object, what would be the perfect set up for a > ColdFusion Environment? > > > Do other vendor's provide a better J2EE server that has better clustering > that JRun? > > When it comes to connecting to the JRun (CF) cluster, does IIS work > differently than Apache? > (for clustering) is one better than the other? > > > For what we have been experiencing (IIS [separate server] | CF702/JRun 4 > updater 7 [2 servers, 2 instances each]; recently JVM1.5), > it seems to me that there is too much dependence between IIS and > individual > CF instances. > - at times, if one instance does off line, the whole site goes down. > - if an instance is off-line when IIS comes up, it is not added to the > cluster when it comes back on-line > - IIS needs to be restarted if there is a change in the cluster > > Has any one noticed any improvements in clustering in CF8? > > Updater 7 for JRun was meant to have clustering fixes, but we have not > noticed it :-( > > On Thu, May 15, 2008 at 6:06 AM, Russ <[EMAIL PROTECTED]> wrote: > > > > > > > Russ, I think Rick already basically answered the question of why he > > > isn't using something more advanced when he said "I don't have a setup > > > that warrants having multiple physical servers and a hardware load > > > balancer". Even LVS would not only require him to use Linux, but have > > > an additional physical server to control the load balancing. > > > > > Sorry I wasn't following the thread closely. Having two instances on > the > > same server won't provide a huge amount of redundancy, but if he wants > to > > run everything on the same server, there's again either a shared > hardware > > loadbalancer which can be had fairly cheap at a place like HMS, or set > up > > LVS or something in VMWare on the same box. If he's already on Linux, > he > > can probably even use the same box. > > > > I believe Apache also has some rudimentary load balancing built in, but > it > > probably wouldn't work for this. > > > > Russ > > > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;192386516;25150098;k Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:305350 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
