Change in AdvertiseSecurityKey on httpd side is ignored by running workers -------------------------------------------------------------------------- Key: MODCLUSTER-446 URL: https://issues.jboss.org/browse/MODCLUSTER-446 Project: mod_cluster Issue Type: Bug Affects Versions: 1.2.10.Final, 1.3.1.Beta1 Reporter: Michal Babacek Assignee: Jean-Frederic Clere While strengtening the test coverage and tying some loose ends, I encountered the following behaviour. It's always reproducible. Please, take a look at it and comment whether you consider it being a quite evil bug, or whether I'm just being full of ideas :-) h3. Steps to reproduce # Setup Apache HTTP Server *balancer* with {{AdvertiseSecurityKey karmYYY}} and start it. # Setup *worker 1* with {{advertise-security-key="karmXXX"}} and start it. # Setup *worker 2* with {{advertise-security-key="karmYYY"}} and start it. # *worker 2* talks to *balancer*, that's cool. # *worker 1* does not talk to *balancer*, that's cool. # Stop *balancer*. Keep both workers running. # Setup Apache HTTP Server *balancer* with {{AdvertiseSecurityKey karmXXX}} and start it. # Now, I would expect that {{verifyDigest}} for *worker 2* ceases to match and that there will be only *worker 1* registered with the *balancer*. What actually happens is that _both_ *worker 1* and *worker 2* are registered with the *balancer* now. STATUS messages are being sent and processed, workers are in OK state. I took a look at the differences between master and 1.2.10 branch, especially with regard to MODCLUSTER-338 and MODCLUSTER-337, but it bares no connection to this issue. 1.2.10.Final and 1.3.1.Beta1 exhibit the same kind of behaviour. According to the log, the digest logic is sane, i.e. one gets: {noformat} [org.jboss.modcluster.advertise.impl.AdvertiseListenerImpl] (pool-1-thread-1) Advertise message digest verification failed for server 1a3825d7-e3df-4b5d-9838-52a3756284b0 {noformat} , but the worker keeps sending STATUS OK messages anyhow. Would it make sense for the worker to "leave" the balancer if the digest is suddenly not matching?