Hello Ioannis, I tried again with an even more basic configuration (base karaf + features:install cellar):
State Version Name Repository Description [installed ] [1.9.3 ] hazelcast repo-0 In memory data grid [installed ] [2.2.2 ] cellar repo-0 Karaf clustering [installed ] [1.0.0 ] jclouds repo-0 JClouds [installed ] [3.0 ] guice repo-0 Google Guice [installed ] [3.0.6.RELEASE ] spring karaf-2.2.3 [installed ] [1.2.1 ] spring-dm karaf-2.2.3 [installed ] [2.2.3 ] config karaf-2.2.3 [installed ] [2.2.3 ] ssh karaf-2.2.3 [installed ] [2.2.3 ] management karaf-2.2.3 I still had the same problem. In fact, I found the problem even worse. As soon as you turn multicast off from the file and restart karaf, the cellar features bundle hangs on startup: [ 67] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Core (2.2.2) [ 68] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Config (2.2.2) [ 69] [Active ] [GracePeriod ] [ ] [ 60] Apache Karaf :: Cellar :: Features (2.2.2) [ 70] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Bundle (2.2.2) [ 71] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Utils (2.2.2) [ 72] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Shell (2.2.2) [ 73] [Active ] [ ] [Started] [ 60] Apache Karaf :: Cellar :: Hazelcast (2.2.2) [ 74] [Active ] [Created ] [ ] [ 60] Apache Karaf :: Cellar :: Management (2.2.2) I have to shutdown karaf with "kill -9" (as shutdown doesn't work). Even if I now turn multicast back on in the instance config file and restart, the "Cellar :: Features" bundle continues to hang. I don't see anything too exciting in the logs which could point me to the issue. I only see this on shutdown: 2011-09-06 15:29:23,259 | DEBUG | lixDispatchQueue | framework | ? ? | 0 - org.apache.felix.framework - 3.0.9 | BundleEvent STOPPED2011-09-06 15:29:23,259 | DEBUG | nt Dispatcher: 1 | BlueprintListener | raf.shell.osgi.BlueprintListener 85 | 30 - org.apache.karaf.shell.osgi - 2.2.3 | Blueprint app state changed to Destroying for bundle 74 2011-09-06 15:29:23,259 | WARN | hz.UDP.Sender | ManagementCenterService | dardLoggerFactory$StandardLogger 62 | - - | [cellar] sleep interrupted java.lang.InterruptedException: sleep interrupted at java.lang.Thread.sleep(Native Method)[:1.6.0_27] at com.hazelcast.impl.management.ManagementCenterService$UDPSender.run(ManagementCenterService.java:212)[42:hazelcast:1.9.3]2011-09-06 15:29:23,260 | DEBUG | FelixStartLevel | management | ? ? | 74 - org.apache.karaf.cellar.management - 2.2.2 | ServiceEvent UNREGISTERING 2011-09-06 15:29:23,261 | DEBUG | FelixStartLevel | ReferenceRecipe | eprint.container.ReferenceRecipe 152 | 9 - org.apache.aries.blueprint - 0.3.1 | Unbinding reference mbeanServer If you could let me know what else I can try, it would be much appreciated. thanks in advance, Gareth -- View this message in context: http://karaf.922171.n3.nabble.com/Configuring-Cellar-For-TCP-Instead-Of-Multicast-tp3305497p3314614.html Sent from the Karaf - User mailing list archive at Nabble.com.