On 1): have you checked "* Use J2EE session variables * "? You have to use J2EE session variables in a clustered environment..
On Thu, Oct 2, 2008 at 12:56 AM, James Holmes <[EMAIL PROTECTED]>wrote: > We're hoping to set up some monitoring to work that out. If there's a > verbose log level I can turn on at the server end it might help. I'll dig > around for that. > mxAjax / CFAjax docs and other useful articles: > http://www.bifrost.com.au/blog/ > > > 2008/10/2 AJ Mercer <[EMAIL PROTECTED]> > > > for point 2there maybe some timeout setting on the network - if it cant > see > > it for a period of time it may think the cluster is dead. > > > > Is the newtowrk under load when it drops out? > > > > > > On Thu, Oct 2, 2008 at 2:28 PM, James Holmes <[EMAIL PROTECTED]> > > wrote: > > > > > We have two problems with clustering our CF 8.01 Multiserver (i.e. > JRun) > > > installs. > > > > > > 1) Session replication is broken. When we turn off an instance in a > > cluster > > > that has session replication and stickiness turned on, the next server > > that > > > gets the request throws a null pointer error when trying to run > > > Application.cfc to establish the session. We've confirmed this by > > clearing > > > the session cookies on the browser; this enables the server to respond > > > correctly as it can then set up its own session. Turning off session > > > replication makes this go away. Any ideas what might be wrong with our > > > setup > > > to cause session replication to fail? > > > > > > 2) Half way through yesterday, our clustering started to fail. Up until > > now > > > all the servers have behaved properly, all joining the cluster > correctly. > > > Now, servers will drop out of the cluster for no reason, only to > re-join > > > later on. They intermittently drop in and out of the cluster. The > > > most interesting part is that when they drop out, they do it in pairs. > > Each > > > pair of servers in the same datacentre stay clustered; they seem to > lose > > > the > > > connection with the servers in the other datacentre (we have four > > servers, > > > two in each datacentre, all on the same VLAN subnet). I've tried adding > > the > > > servers as unicast peers rather than letting the multicast discovery > find > > > them, but it didn't help. If anyone has ideas about how best to monitor > > the > > > connections between the servers and get an idea of why the servers are > > > dropping out of the cluster, please let me know. > > > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Adobe® ColdFusion® 8 software 8 is the most important and dramatic release to date Get the Free Trial http://ad.doubleclick.net/clk;207172674;29440083;f Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:313619 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
