Hello, I am running Tomcat 10.1.20 with Java 17
But our session data is being lost. Here is snippet of the clustering I have defined.......... <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="6"> <Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true" maxActiveSessions="4096" sessionAttributeNameFilter="uploader_redirect|phone_tree|soundhound.campaigndata|format|employee_id|customer|customer_id|nonidentifier_call_letters|call_letters|caller_id_enabled|ivr_system|ivr_system_id|zip_code|time_zone|is_trial_customer|delete_confirmation|download_settings|clustered_admin|wall_token|employee_first_name|logged_in_user|logged_in" /> <Channel className="org.apache.catalina.tribes.group.GroupChannel"> <Membership className="org.apache.catalina.tribes.membership.McastService" address="228.0.0.4" port="45565" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="auto" port="4001" selectorTimeout="100" maxThreads="6"/> <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/> </Channel> <Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=".*\.gif|.*\.js|.*\.jpeg|.*\.jpg|.*\.png|.*\.htm|.*\.html|.*\.css|.*\.txt|.*\.jsp"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster> Notice in sessionAttributeNameFilter that one of the session attributes I want replicated is -> logged_in_user We have to include the session data we want replicated here Correct? logged_in_user is one we want replicated, its value is a String When I run my app this code runs -> public class Utils { public static String getUserName( HttpServletRequest request ) { return (String) request.getSession().getAttribute("logged_in_user"); } } That code returns a null value, indicating that the session value is not found. Does anyone see something wrong with how I defined the clustering? This below comes from the Catalina.out log and indicates there is an issue with clustering....... SEVERE: Manager [##0001]: No session state sent at [4/16/24, 12:48 PM] received, timing out after [60,074] ms. Apr 16, 2024 12:49:54 PM org.apache.catalina.ha.session.DeltaManager getAllClusterSessions WARNING: Manager [##0001]: Drop message [SESSION-GET-ALL] inside GET_ALL_SESSIONS sync phase start date [4/16/24, 12:48 PM] message date [4/16/24, 12:48 PM] Our live environment has two app server machines being fed by one loadbalancer. In our dev environment, that has just one machine, this same session data can be extracted. But not on the live 2 machine environment Rick Noel Systems Programmer | Westwood One rn...@westwoodone.com