Hello Alain, /Library/Tomcat/bin/catalina.sh jpda start should be good enough. If you have a look at the tomcat command line process are the JPDA options enabled? E.g.:
$ $CATALINA_HOME/bin/catalina.sh jpda start $ ps -ef | grep --color dt_socket lurodrig 13522 2883 6 13:58 pts/5 00:00:04 .../jdk1.8.0_162/bin/java... -agentlib:jdwp=transport=dt_socket,address=localhost:8000,server=y,suspend=n ... org.apache.catalina.startup.Bootstrap start In the catalina.out you should see something like: Listening for transport dt_socket at address: 8000 Asking for the debug and http ports: lurodrig@:tomcat-9-0-5-installation$ lsof -i:8000 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 13522 lurodrig 4u IPv4 450991 0t0 TCP localhost:8000 (LISTEN) lurodrig@:tomcat-9-0-5-installation$ lsof -i:8080 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME java 13522 lurodrig 51u IPv6 450993 0t0 TCP *:http-alt (LISTEN) Hope it helps, Luis ps: a HTTP request against the debug port will print this message in the catalina.out Debugger failed to attach: handshake failed - received >GET / HTTP/1.1< - expected >JDWP-Handshake< 2018-07-16 13:45 GMT+02:00 Désilets, Alain <alain.desil...@nrc-cnrc.gc.ca>: > I am unable to start Tomcat in debug mode. I have searched and see that > lots of people are having similar issues. I tried all the fixes that were > proposed and none of them seem to work. > > Here is what I have at the moment. > > I have a file /Library/Tomcat/bin/setenv with the following content > # Trying to start Tomcat in debug mode... > # > # CATALINA_OPTS="-agentlib:jdwp=transport=dt_socket,address= > 8000,server=y,suspend=n" > JPDA_ADDRESS=8000 > JPDA_TRANSPORT=dtsocket > JPDA_SUSPEND=n > > Note that I tried setting the JPDA environment both ways (using > CATALINA_OPTS and JPDA_* vars) and the result is the same. > > To restart tomcat, I do the following command: > > > echo "" > /Library/Tomcat/logs/catalina.out ; > /Library/Tomcat/bin/shutdown.sh; sleep 2; /Library/Tomcat/bin/catalina.sh > jpda start; echo "Restarted tomcat, catalina.out is:"; cat > /Library/Tomcat/logs/catalina.out > > This produces the following output: > > > Using CATALINA_BASE: /Library/Tomcat > > Using CATALINA_HOME: /Library/Tomcat > > Using CATALINA_TMPDIR: /Library/Tomcat/temp > > Using JRE_HOME: /Library/Java/JavaVirtualMachines/jdk1.8.0_ > 102.jdk/Contents/Home > > Using CLASSPATH: /Library/Tomcat/bin/bootstrap. > jar:/Library/Tomcat/bin/tomcat-juli.jar > > Using CATALINA_BASE: /Library/Tomcat > > Using CATALINA_HOME: /Library/Tomcat > > Using CATALINA_TMPDIR: /Library/Tomcat/temp > > Using JRE_HOME: /Library/Java/JavaVirtualMachines/jdk1.8.0_ > 102.jdk/Contents/Home > > Using CLASSPATH: /Library/Tomcat/bin/bootstrap. > jar:/Library/Tomcat/bin/tomcat-juli.jar > > Tomcat started. > > Restarted tomcat, catalina.out is: > > > > 16-Jul-2018 07:35:12.366 INFO [main] > org.apache.catalina.core.StandardServer.await > A valid shutdown command was received via the shutdown port. Stopping the > Server instance. > > 16-Jul-2018 07:35:12.366 INFO [main] org.apache.coyote.AbstractProtocol.pause > Pausing ProtocolHandler ["http-nio-8080"] > > 16-Jul-2018 07:35:12.426 INFO [main] org.apache.coyote.AbstractProtocol.pause > Pausing ProtocolHandler ["ajp-nio-8009"] > > 16-Jul-2018 07:35:12.483 INFO [main] > org.apache.catalina.core.StandardService.stopInternal > Stopping service [Catalina] > > 16-Jul-2018 07:35:12.517 INFO [main] org.apache.coyote.AbstractProtocol.stop > Stopping ProtocolHandler ["http-nio-8080"] > > 16-Jul-2018 07:35:12.520 INFO [main] org.apache.coyote.AbstractProtocol.stop > Stopping ProtocolHandler ["ajp-nio-8009"] > > 16-Jul-2018 07:35:12.523 INFO [main] > org.apache.coyote.AbstractProtocol.destroy > Destroying ProtocolHandler ["http-nio-8080"] > > 16-Jul-2018 07:35:12.523 INFO [main] > org.apache.coyote.AbstractProtocol.destroy > Destroying ProtocolHandler ["ajp-nio-8009"] > > > > When I go to http://localhost:8000, I get “This site can’t be reached”. > > > > Same if I go to http://localhost:8080/. > > > > But… if I restart tomcat using the same command as above, except without > the ‘jpda’ argument to Catalina.sh, then 8080 is started fine, but not 8000 > (which Is to be expected). > > > > I checked to see if port 8000 is already busy by issueing this command: > > > > sudo lsof -iTCP -sTCP:LISTEN -n -P | grep 8000 > > > > But is shows no process listening on that port. And I know that this > command works because when I successfully start tomcat without ‘jpda’, if I > use this command to check for port 8080, I get: > > > > java 1925 desilets 60u IPv6 0xad510ad8630ef821 0t0 TCP > *:8080 (LISTEN) > > > Not sure what to try next… have pretty much run out of options at this > point. > > Any help will be greatly appreciated. > > Thx. > > Alain Désilets > National Research Council of Canad > -- "Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better." - Samuel Beckett
