________________________________________ From: Christopher Schultz <ch...@christopherschultz.net> Sent: Tuesday, March 8, 2016 3:48 PM To: Tomcat Users List Subject: Re: Advice on Cluster in one machine
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Edwin, On 3/8/16 8:19 AM, Edwin Quijada wrote: > I am new using Tomcat so I have a question about performance. I > have installed a cluster with 2 tomcats and apache webserver like > proxy in front of Tomcat cluster but this whole thing is in one > server, somebody tell me that is not useful beacuse is in the same > server that is better give more resources to one tomcat and not > split the resources in two. Performance-wise, your friend is right: a two-node cluster on one machine is going to use more resources than a single node on that machin e. However, running two cluster nodes on a single server isn't a completely stupid idea. If you want to have zero-downtime deployments, you can take one node down, upgrade it, then switch. So there's value there. As for fault-tolerance, the single point of failure is the whole machine: if that server isn't available, no services are available . That's why people usually have a hardware load balancer (fairly simple, fairly reliable) and several web/app servers, just in case one of them fails. If one node fails, the service is still available. > Somebody here can give any advice about this configuration what do > you think about this ? In this server I have websockets in cluster > and I am having problems with websockets in cluster Clustering and websockets have little to do with one another, since the connection goes to one node and the cluster really just manages things like sessions (which are orthogonal to connections, protocols, etc.). OK, so if I want to run my app like myserver.com I can use apache like reverse proxy to do this and still working with websockets , I want to do this something like this Apache -> Tomcat -> DB but the websocket still works ? --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
