>Well, my primary concern was that I don't want _other_ hosts to join my >cluster not the other way around, so I am guessing I have to limit my >mcast invitations and tcp traffic to relevant parties only?
that is exactly the point I was trying to make. Setup your security in the OS that way you get more performance out of tomcat. If you allow mcast traffic from other hosts into your machine, you are already taking up resources. Filip -----Original Message----- From: Filip Hanik (lists) [mailto:[EMAIL PROTECTED] Sent: Saturday, September 04, 2004 2:22 PM To: Tomcat Users List Subject: RE: Tomcat 5.5 In-Memory Session Replication did you try replication with 5.0.27? if that works for you, then for sure something broke. 5.5 is still in dev mode, so you can't bank on everything working quit yet :) Filip -----Original Message----- From: Tomcat Newbie [mailto:[EMAIL PROTECTED] Sent: Saturday, September 04, 2004 4:51 AM To: Tomcat Users List Subject: RE: Tomcat 5.5 In-Memory Session Replication Thanks again, Filip. I am sending this response to document my experience for others. > set up machines to only access mcast and tcp traffic from certain IPs and > certain ports. Well, my primary concern was that I don't want _other_ hosts to join my cluster not the other way around, so I am guessing I have to limit my mcast invitations and tcp traffic to relevant parties only? :-) > ok, I haven't tested replication on 5.5 yet myself, I've been to busy with > corporate world. > but from what I am reading, is that the replication valve is not issuing the > transfer or session deltas. Maybe something broke...we'll have to check Sounds about right. Logs show original and replicate session creation. Most of the time, SessionListener will log correct original session attribute name, but null value. However, even when it does log both name and value, still there is no replication done. > you do have the replication valve set up in server.xml right? I believe so. Default setup and I saw no instructions for additional setup anywhere for replication valve, other than the filter options. I figured I ventured into something too "bleeding edge" for me (I did so mainly because Jakarta site said that 5.5 was branched off from 5.0.27). So I went back to 5.0.28. Then, after spending a few hours pointlessly watching the logs for any activity other than mcast membership registrations, to my surprise, I discovered that the session attributes were replicating beautifully on 5.0.28, but without any logging. Yup, with all debug="" cranked up all the way to 9 or 10. Go figure! Glad it works, though. I also found a link for JDBC persistence manager (http://www.ingrid.org/ jajakarta/tomcat/tomcat-4.0b5/src/catalina/docs/JDBCStore-howto.html), so I might go in that direction, since such setup would certainly address my security concerns. Similar, but less complete documentation is available for 5.x (http://jakarta.apache.org/tomcat/tomcat-5.0-doc/ config/manager.html). I have played with built-in MySQL replication and so far I have no complaints about its performance for low-load servers. I just need to make sure that it stores sessions in MySQL all the time, not just swapped. MySQL will take care of the rest. Regards, Ed --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.740 / Virus Database: 494 - Release Date: 8/16/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.740 / Virus Database: 494 - Release Date: 8/16/2004 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --- Incoming mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.740 / Virus Database: 494 - Release Date: 8/16/2004 --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.740 / Virus Database: 494 - Release Date: 8/16/2004 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
