I have a setup which has one load balancer(wildly-11 in load balancer profile) at front and two server nodes(wildly-11) at the back.Now i need load balancer log which can give details about request transferred to which node.Can anyone explain how we can make those log appear?
You can specify the DEBUG log level for io.undertow.server.handlers.proxy package in the WildFly config . Example from standalone/configuration/standalone-load-balancer.xml:
<logger category="io.undertow.server.handlers.proxy">
<level name="DEBUG"/>
</logger>
After that, you will see the information about requests' proxying in the log. Example:
13:05:06,274 DEBUG [io.undertow.server.handlers.proxy] (default I/O-13) Sending request ClientRequest{path='/xxx-app', method=GET, protocol=HTTP/1.1} to target /127.0.0.1:8009 for exchange HttpServerExchange{ GET /xxx-app request {Accept=[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8], Accept-Language=[en-US,en;q=0.5], Cache-Control=[max-age=0], Accept-Encoding=[gzip, deflate], User-Agent=[...], Connection=[keep-alive], Cookie=[JSESSIONID=B9mIIaGz2QYcPBbODJxvY04wjjRnfSz0r2iYh7VQ.node6], Upgrade-Insecure-Requests=[1], Host=[localhost:8080]} response {}}
13:05:06,274 DEBUG [io.undertow.server.handlers.proxy] (default I/O-13) Sent request ClientRequest{path='/xxx-app', method=GET, protocol=HTTP/1.1} to target 127.0.0.1 for exchange HttpServerExchange{ GET /xxx-app request {Accept=[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8], Accept-Language=[en-US,en;q=0.5], Cache-Control=[max-age=0], Accept-Encoding=[gzip, deflate], User-Agent=[...], Connection=[keep-alive], Cookie=[JSESSIONID=B9mIIaGz2QYcPBbODJxvY04wjjRnfSz0r2iYh7VQ.node6], Upgrade-Insecure-Requests=[1], Host=[localhost:8080]} response {}}
13:05:06,452 DEBUG [io.undertow.server.handlers.proxy] (default I/O-13) Received response ClientResponse{responseHeaders={X-Powered-By=[JSF/1.2], Content-Type=[text/html;charset=UTF-8], Date=[Wed, 13 Nov 2019 10:05:06 GMT]}, responseCode=200, status='OK', protocol=HTTP/1.1} for request ClientRequest{path='/xxx-app', method=GET, protocol=HTTP/1.1} for exchange HttpServerExchange{ GET /xxx-app request {Accept=[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8], Accept-Language=[en-US,en;q=0.5], Cache-Control=[max-age=0], Accept-Encoding=[gzip, deflate], User-Agent=[...], Connection=[keep-alive], Cookie=[JSESSIONID=B9mIIaGz2QYcPBbODJxvY04wjjRnfSz0r2iYh7VQ.node6], Upgrade-Insecure-Requests=[1], Host=[localhost:8080]} response {}}