Undertow hosts root location is exposed(by default) to mod_cluster load balancer -------------------------------------------------------------------------------- Key: MODCLUSTER-587 URL: https://issues.jboss.org/browse/MODCLUSTER-587 Project: mod_cluster Issue Type: Bug Components: Documentation & Demos Reporter: Bogdan Sikora Assignee: Michal Karm Babacek Priority: Critical Undertow can be configured to serve static content per host via the location resource. This location resource is exposed to the mod_cluster balancer. {noformat} "context" => { "/custom_location" => { "requests" => 0, "status" => "enabled" }, {noformat} However, all EAP standalone profiles have enabled root location by default. This root location is then exposed to the balancer( Application root "/" is registered). {noformat} "context" => { "/" => { "requests" => 0, "status" => "enabled" }, {noformat} Root application matches with any application call and therefore mod_cluster balancer is unable to correctly route requests. To make mod_cluster work, one must delete root location from worker nodes. {noformat} /subsystem=undertow/server=default-server/host=default-host/location=\/:remove() {noformat} or excluding context ROOT {noformat} /subsystem=modcluster/mod-cluster-config=configuration:write-attribute(name=excluded-contexts,value="ROOT") {noformat} *_+Proposal:+_* Exclude ROOT context by default