unzip wildfly-dist-15.0.1.Final.zip

# Terminal 1
cd wildfly-15.0.1.Final/bin/
./standalone.sh -c standalone-load-balancer.xml -Djava.net.preferIPv4Stack=true -b 127.0.0.1 -Djboss.modcluster.multicast.address=230.0.0.4

# Terminal 2
cd wildfly-15.0.1.Final/bin/
./standalone.sh -c standalone-ha.xml -Djboss.node.name=node1 -Djboss.socket.binding.port-offset=100 -Djboss.modcluster.multicast.address=230.0.0.4

# Terminal 3
cd wildfly-15.0.1.Final/bin/
./standalone.sh -c standalone-ha.xml -Djboss.node.name=node2 -Djboss.socket.binding.port-offset=200 -Djboss.modcluster.multicast.address=230.0.0.4

# Terminal 4
cd wildfly-15.0.1.Final/bin/
./jboss-cli.sh -c
/subsystem=logging/logger=io.undertow:add(level=ALL)
/subsystem=logging/console-handler=CONSOLE:write-attribute(name=level, value=ALL)
connect localhost:10090
/subsystem=logging/logger=io.undertow:add(level=ALL)
/subsystem=logging/console-handler=CONSOLE:write-attribute(name=level, value=ALL)
/subsystem=modcluster/proxy=default:write-attribute(name=listener,value=default)
reload
connect localhost:10190
/subsystem=logging/logger=io.undertow:add(level=ALL)
/subsystem=logging/console-handler=CONSOLE:write-attribute(name=level, value=ALL)
/subsystem=modcluster/proxy=default:write-attribute(name=listener,value=default)
reload

16:30:23,409 TRACE [io.undertow.request] (default I/O-7) Opened connection with /127.0.0.1:50002
16:30:23,410 DEBUG [io.undertow.request.error-response] (default I/O-7) Setting error code 500 for exchange HttpServerExchange{ OPTIONS * request {HTTP2-Settings=[AAEAABAAAAIAAAABAAQAAP//AAUAAEAA], Connection=[Upgrade, HTTP2-Settings], Upgrade=[h2c], User-Agent=[mod_cluster ping], Host=[127.0.0.1]} response {}}: java.lang.RuntimeException
	at io.undertow.server.HttpServerExchange.setStatusCode(HttpServerExchange.java:1410)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:393)
	at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)

16:30:23,410 DEBUG [io.undertow.request.io] (default I/O-7) UT005013: An IOException occurred: java.io.IOException: Invalid base64 character encountered: 47
	at io.undertow.util.FlexBase64$Decoder.nextByte(FlexBase64.java:1048)
	at io.undertow.util.FlexBase64$Decoder.nextByte(FlexBase64.java:1015)
	at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1277)
	at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1347)
	at io.undertow.util.FlexBase64$Decoder.decode(FlexBase64.java:1413)
	at io.undertow.util.FlexBase64$Decoder.access$500(FlexBase64.java:983)
	at io.undertow.util.FlexBase64.decodeURL(FlexBase64.java:320)
	at io.undertow.server.protocol.http2.Http2UpgradeHandler.handleHttp2Upgrade(Http2UpgradeHandler.java:158)
	at io.undertow.server.protocol.http2.Http2UpgradeHandler.handleUpgradeBody(Http2UpgradeHandler.java:107)
	at io.undertow.server.protocol.http2.Http2UpgradeHandler.handleRequest(Http2UpgradeHandler.java:97)
	at io.undertow.server.handlers.DisallowedMethodsHandler.handleRequest(DisallowedMethodsHandler.java:61)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:360)
	at io.undertow.server.protocol.http.HttpReadListener.handleEventWithNoRunningRequest(HttpReadListener.java:255)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:136)
	at io.undertow.server.protocol.http.HttpReadListener.handleEvent(HttpReadListener.java:59)
	at org.xnio.ChannelListeners.invokeChannelListener(ChannelListeners.java:92)
	at org.xnio.conduits.ReadReadyHandler$ChannelListenerHandler.readReady(ReadReadyHandler.java:66)
	at org.xnio.nio.NioSocketConduit.handleReady(NioSocketConduit.java:89)
	at org.xnio.nio.WorkerThread.run(WorkerThread.java:591)

16:30:23,411 TRACE [io.undertow.server.HttpServerExchange] (default I/O-7) Starting to write response for HttpServerExchange{ OPTIONS * request {HTTP2-Settings=[AAEAABAAAAIAAAABAAQAAP//AAUAAEAA], Connection=[Upgrade, HTTP2-Settings], Upgrade=[h2c], User-Agent=[mod_cluster ping], Host=[127.0.0.1]} response {Connection=[keep-alive], Content-Length=[0], Date=[Wed, 23 Jan 2019 15:30:23 GMT]}}