My gut feeling is that it isn't related to the jvm version. Have you verified that all necessary ports are open between cluster nodes?
On 10/8/08, James Holmes <[EMAIL PROTECTED]> wrote: > Yes, that's on for all members in the cluster (and it's the only way I set > up sessions for every server I touch). > > We think we've resolved the problem of members dropping out of the cluster. > It appears that two of the boxes were set up for IPV6 and two weren't. > Getting rid of the IPV6 config seems to have made them behave and they all > respond to the discovery multicasts properly now. > > The problem of sessions giving a null pointer error on failover persists if > we enable session replication. We're running the 1.5 JVM on these servers; > at some stage I'll set up a test server with Java 6 to see if that's the > cause. > > mxAjax / CFAjax docs and other useful articles: > http://www.bifrost.com.au/blog/ > > > 2008/10/9 Shannon Peevey <[EMAIL PROTECTED]> > >> 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:313654 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
