I’ve checked the tutorial you had followed and seems the errori s in this line:
sudo ln -s /etc/guacamole/guacamole.war /opt/tomcat/tomcatapp/webapps that will be dor properly work: sudo ln -s /etc/guacamole/guacamole.war /opt/tomcat/tomcatapp/webapps/guacamole Tomcat works with symlinks (also mine are setted up with symlinks), but you need to put it in the right place. Alessandro Da: Antoine Besnier <besnier_anto...@yahoo.fr.INVALID> Inviato: martedì 1 marzo 2022 17:48 A: user@guacamole.apache.org Oggetto: Re: Error 404 with Guacamole 1.4.0 / Tomcat 9 / Ubuntu 21.10 This line in the tutorial you followed may be the culprit: sudo ln -s /etc/guacamole/guacamole.war /opt/tomcat/tomcatapp/webapps check the value of $CATALINA_HOME, and confirm your guacamole.war is present in the directory $CATALINA_HOME/webapps. Don't know if tomcat can work with links? safer to just copy guacamole.war directly. See the doc: https://guacamole.apache.org/doc/gug/installing-guacamole.html#deploying-guacamole Cheers Le mardi 1 mars 2022, 12:59:32 UTC+1, Adam Cherrett <adamcherr...@gmail.com <mailto:adamcherr...@gmail.com> > a écrit : I need some help troubleshooting my attempt to get 1.4.0 running (for use on my local network). I am working with a clean installation of Ubuntu 21.10, and have been following the steps in https://computingforgeeks.com/install-and-use-guacamole-on-ubuntu/ Tomcat 9 appears to be running fine (and I can access the manager app through the browser): > systemctl status tomcat ● tomcat.service - Tomcat 9 servlet container Loaded: loaded (/etc/systemd/system/tomcat.service; enabled; vendor prese t: enabled) Active: active (running) since Mon 2022-02-28 13:28:23 CET; 23h ago Process: 13902 ExecStart=/opt/tomcat/tomcatapp/bin/startup.sh (code=exited , status=0/SUCCESS) Main PID: 13909 (java) Tasks: 39 (limit: 38299) Memory: 340.4M CPU: 1min 44.670s CGroup: /system.slice/tomcat.service └─13909 /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Djava.util.l ogging.config.file=/opt/tomcat/tomcatapp/conf/logging.properties -Djava.util.l ogging.manager=org.apache.juli.ClassLoaderLogManager -Djava.security.egd=file: ///dev/urandom -Djava.awt.headless=true -Djdk.tls.ephemeralDHKeySize=2048 -Dja va.protocol.handler.pkgs=org.apache.catalina.webresources -Dorg.apache.catalin a.security.SecurityListener.UMASK=0027 -Xms512M -Xmx1024M -server -XX:+UsePara llelGC -Dignore.endorsed.dirs= -classpath /opt/tomcat/tomcatapp/bin/bootstrap. jar:/opt/tomcat/tomcatapp/bin/tomcat-juli.jar -Dcatalina.base=/opt/tomcat/tomc atapp -Dcatalina.home=/opt/tomcat/tomcatapp -Djava.io.tmpdir=/opt/tomcat/tomca tapp/temp org.apache.catalina.startup.Bootstrap start Feb 28 13:28:23 blackbox systemd[1]: Starting Tomcat 9 servlet container... Feb 28 13:28:23 blackbox startup.sh[13902]: Tomcat started. Feb 28 13:28:23 blackbox systemd[1]: Started Tomcat 9 servlet container. guacd appears to be fine: ● guacd.service - LSB: Guacamole proxy daemon Loaded: loaded (/etc/init.d/guacd; generated) Active: active (running) since Mon 2022-02-28 13:28:41 CET; 23h ago Docs: man:systemd-sysv-generator(8) Process: 13992 ExecStart=/etc/init.d/guacd start (code=exited, status=0/SU CCESS) Tasks: 1 (limit: 38299) Memory: 9.4M CPU: 15ms CGroup: /system.slice/guacd.service └─13996 /usr/local/sbin/guacd -p /var/run/guacd.pid Feb 28 13:28:41 blackbox systemd[1]: Starting LSB: Guacamole proxy daemon... Feb 28 13:28:41 blackbox guacd[13994]: Guacamole proxy daemon (guacd) version 1.4.0 started Feb 28 13:28:41 blackbox guacd[13992]: Starting guacd: Feb 28 13:28:41 blackbox guacd[13994]: guacd[13994]: INFO: Guacamole pr oxy daemon (guacd) version 1.4.0 started Feb 28 13:28:41 blackbox guacd[13992]: SUCCESS Feb 28 13:28:41 blackbox guacd[13996]: Listening on host 127.0.0.1, port 4822 Feb 28 13:28:41 blackbox systemd[1]: Started LSB: Guacamole proxy daemon. I can restart both tomcat and guacd without problems. I suspect the problem lies with the guacamole client. I have tried prerolled versions and compiling my own - neither of them works. Browsing to http://127.0.0.1:8080/guacamole gives a 404 error. The Tomcat manager shows a number of applications running, and shows guacamole is not. Trying to start it from the browser gives the error "FAIL - Application at context path [/guacamole] could not be started". Here are some log entries: in catalina.YYYY-MM-DD.log (duplicated in catalina.out): 01-Mar-2022 12:27:33.610 INFO [http-nio-8080-exec-18] org.apache.jasper.servle t.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no T LDs. Enable debug logging for this logger for a complete list of JARs that wer e scanned but no TLDs were found in them. Skipping unneeded JARs during scanni ng can improve startup time and JSP compilation time. 01-Mar-2022 12:27:33.611 SEVERE [http-nio-8080-exec-18] org.apache.catalina.co <http://org.apache.catalina.co> re.StandardContext.startInternal One or more listeners failed to start. Full d etails will be found in the appropriate container log file 01-Mar-2022 12:27:33.612 SEVERE [http-nio-8080-exec-18] org.apache.catalina.co <http://org.apache.catalina.co> re.StandardContext.startInternal Context [/guacamole] startup failed due to pr evious errors in localhost_access_log.YYYY-MM-DD.txt: 192.168.0.50 - - [01/Mar/2022:12:26:54 +0100] "GET /guacamole HTTP/1.1" 404 76 1 192.168.0.50 - - [01/Mar/2022:12:26:54 +0100] "GET /favicon.ico HTTP/1.1" 200 8192 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET / HTTP/1.1" 200 11165 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /tomcat.css HTTP/1.1" 200 5 542 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /tomcat.svg HTTP/1.1" 200 6 7795 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /bg-nav.png HTTP/1.1" 200 1 401 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /asf-logo-wide.svg HTTP/1.1 " 200 27235 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /bg-button.png HTTP/1.1" 20 0 713 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /bg-upper.png HTTP/1.1" 200 3103 192.168.0.50 - - [01/Mar/2022:12:27:01 +0100] "GET /bg-middle.png HTTP/1.1" 20 0 1918 192.168.0.50 - - [01/Mar/2022:12:27:04 +0100] "GET /manager/html HTTP/1.1" 403 3446 127.0.0.1 - - [01/Mar/2022:12:27:24 +0100] "GET / HTTP/1.1" 200 11165 127.0.0.1 - tomcat [01/Mar/2022:12:27:26 +0100] "GET /manager/html HTTP/1.1" 2 00 17639 127.0.0.1 - tomcat [01/Mar/2022:12:27:33 +0100] "POST /manager/html/start?path =/guacamole&org.apache.catalina.filters.CSRF_NONCE=C82F32F4F2B7BF04460DB9681C5 311B2 HTTP/1.1" 200 17710 in manager.YYYY-MM-DD.log: 01-Mar-2022 12:27:26.940 INFO [http-nio-8080-exec-17] org.apache.catalina.core .ApplicationContext.log HTMLManager: list: Listing contexts for virtual host ' localhost' 01-Mar-2022 12:27:33.290 INFO [http-nio-8080-exec-18] org.apache.catalina.core .ApplicationContext.log HTMLManager: start: Starting web application '/guacamo le' 01-Mar-2022 12:27:33.614 INFO [http-nio-8080-exec-18] org.apache.catalina.core .ApplicationContext.log HTMLManager: list: Listing contexts for virtual host ' localhost' in syslog: Mar 1 12:26:55 blackbox kernel: [85369.163074] audit: type=1326 audit(1646134 015.358:278): auid=1000 uid=1000 gid=1000 ses=2 subj=snap.firefox.firefox pid= 26373 comm="MainThread" exe="/snap/firefox/1025/usr/lib/firefox/firefox" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f823a59a89d code=0x50000 Mar 1 12:26:55 blackbox rtkit-daemon[1271]: Supervising 7 threads of 4 proces ses of 1 users. Mar 1 12:26:55 blackbox rtkit-daemon[1271]: Supervising 7 threads of 4 proces ses of 1 users. Mar 1 12:27:00 blackbox gnome-shell[1399]: libinput error: client bug: timer event3 debounce: scheduled expiry is in the past (-9ms), your system is too sl ow Mar 1 12:27:00 blackbox gnome-shell[1399]: libinput error: client bug: timer event3 debounce short: scheduled expiry is in the past (-22ms), your system is too slow Mar 1 12:27:02 blackbox kernel: [85376.053342] IPv6: MLD: clamping QRV from 1 to 2! Mar 1 12:27:12 blackbox gnome-shell[1399]: libinput error: client bug: timer event3 debounce short: scheduled expiry is in the past (-0ms), your system is too slow Mar 1 12:27:25 blackbox kernel: [85399.594820] audit: type=1326 audit(1646134 045.789:279): auid=1000 uid=1000 gid=1000 ses=2 subj=snap.firefox.firefox pid= 26429 comm="MainThread" exe="/snap/firefox/1025/usr/lib/firefox/firefox" sig=0 arch=c000003e syscall=314 compat=0 ip=0x7f035f28a89d code=0x50000 Mar 1 12:27:25 blackbox rtkit-daemon[1271]: Supervising 7 threads of 4 proces ses of 1 users. Mar 1 12:27:25 blackbox rtkit-daemon[1271]: Supervising 7 threads of 4 proces ses of 1 users. Mar 1 12:27:30 blackbox gnome-shell[1399]: libinput error: client bug: timer event3 debounce: scheduled expiry is in the past (-5ms), your system is too sl ow Mar 1 12:27:30 blackbox gnome-shell[1399]: libinput error: client bug: timer event3 debounce short: scheduled expiry is in the past (-18ms), your system is too slow Any help with interpreting relevant log entries, pointers for where to look next, how to enable debug logging, etc. would be very much appreciated. Thanks in advance! Adam
