Yes, I've discussed it at length with the network admins. There is no firewall or any other filtering between machines on this subnet. mxAjax / CFAjax docs and other useful articles: http://www.bifrost.com.au/blog/
2008/10/9 Shannon Peevey <[EMAIL PROTECTED]> > 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:313655 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
