MP Health reports UP when there is port collision for port 8080 --------------------------------------------------------------- Key: WFLY-10864 URL: https://issues.jboss.org/browse/WFLY-10864 Project: WildFly Issue Type: Enhancement Components: MP Health Reporter: Rostislav Svoboda Assignee: Lin Gao Priority: Critical MP Health reports UP when there is port collision for port 8080. I have simple python app to acquire port 8080 and once it runs I start WF server {code} import SimpleHTTPServer import SocketServer PORT = 8080 Handler = SimpleHTTPServer.SimpleHTTPRequestHandler httpd = SocketServer.TCPServer(("127.0.0.1", PORT), Handler) print "serving at port", PORT httpd.serve_forever() {code} WF reports Address already in use /127.0.0.1:8080, deployments are not deployed. Accessing http://localhost:9990/health/ reports "outcome":"UP" I think this is wrong and DOWN should be reported. Spec is misleading because it says {{A producer without health check procedures installed MUST returns positive overall outcome (i.e. HTTP 200)}} but it silently assumes server started correctly. I believe authors of the spec expected that if there is some trouble like port collision the server doesn't start, WildFly is a bit further as it allows to boot even if some services are not started properly.