> From: John Tangney [mailto:jo...@jdtangney.com] > Subject: Re: Different apps clustering on the same Tomcat? > > We use a cluster to do seamless deploys. We use Nginx on the front end > to direct traffic to one or other of the nodes in the cluster. To > deploy, we bring up the new version of the app in a one node, tell > Nginx to send traffic to that node, then bring down the other node. > Because sessions are propagated, users never notice that one node has > been exchanged for another.
This is fairly typical. > We need to add two more nodes that run on Windows (we have platform- > specific code, and Nginx sends windows traffic to one of the windows > nodes based on URL) but we only have one Windows box. We thought that > perhaps we could just run a second instance of the app on the Windows > node. This is the part that I can't make sense of. You talk about two more Windows nodes, which I take to mean two more OS/JVM/Tomcat instances. Then you talk about *one* additional instance of your existing webapp running in the same Tomcat, but using a different name. Your numbers don't match up. You can run multiple instances of Tomcat on the same box, and each could have a copy of the app deployed, and each Tomcat could be a separate node in the cluster. You would need to give each Tomcat instance a unique IP address or set of ports, of course, and make sure you have enough RAM to handle all instances without provoking paging. - Chuck THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
