On 04/11/2015 00:56, javier_esp...@hna.honda.com wrote: > I would like to setup a couple of servers for automatic fail-over. In case > one fails the other can take over. Does Tomcat support that kind of setup? > If so, can you direct me to where I can find some documentation about it?
As others have commented fail-over is usually handled by the load-balancer but that still leaves the problem of the load-balancer as a single point of failure. One trick is to use CARP https://en.wikipedia.org/wiki/Common_Address_Redundancy_Protocol to fail over between servers. In the freely available linux implementations this is not a substitute for a load balancer because only one server is active at a time. Strictly speaking this is redundancy of hosts not processes carp won't help you if the tomcat process dies but the node stays up. The actual configuration we use is to have redundant apache servers with an ip address that fails over via CARP and then use apache as a load balancer to access the tomcat nodes. We don't really have the level of traffic to need a load-balancer but putting in fail-over at every level of the software stack reduces exposure to losing a process it also makes it easier to do work on the tomcat processes while keeping the service live. Stephen -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
