BLUF: 1) Disable IPv6 2) Make sure the symbolic link (or the war file) is named guacamole.war. If it is guacamole-1.4.0.war then then the URL to access guacamole becomes <hostname>:8080/guacamole-1.4.0/
Thanks for the quick help!! I will need to read up on Tomcat setup to get that right. It looks like the default for the Ubuntu tomcat9 package is a little off from what the guac documentation expects. It doesn't appear to have an adverse effect. I did get things up and running as is. I'm glad that the install process isn't failing to create /etc/guacamole. Variable eliminated. I identified two issues that were blocking me. First is that with IPv6 enabled and no guacd configuration file, the daemon defaults to listening on port 4822 on IPv6 localhost only. If I disable IPv6 with the following, and restart, it then listens on localhost port 4822 IPv4. sysctl -w net.ipv6.conf.all.disable_ipv6 = 1 sysctl -w net.ipv6.conf.default.disable_ipv6 = 1 sysctl -w net.ipv6.conf.lo.disable_ipv6 = 1 These can be done permanently: https://itsfoss.com/disable-ipv6-ubuntu-linux/ The second issue is tomcat chooses the name of the folder it creates for the webapp based on the filename of the webapp. Therefore, I needed to make sure that I use the correct URL (or just change the war file name). I am uncomfortable with the war file, which is an executable, being located in /etc, so I think I will determine a better location for it to reside, but other than that, I have a login screen and a reference point to build and configure from going forward. Here is the new snippet from my Vagrant install script. This handles none of the configuration, but it does result in what appears to be a working server and client (just unconfigured). ## Install Tomcat apt-get install -y tomcat9 ## Install Guacamole Server apt-get install -y build-essential libcairo2-dev libjpeg-turbo8-dev libpng-dev libtool-bin uuid-dev libwebp-dev libvncserver-dev wget --no-verbose --show-progress --progress=bar:force -P /tmp https://downloads.apache.org/guacamole/1.4.0/source/guacamole-server-1.4.0.tar.gz 2>&1 echo '2789075c8b25e5aa42dec505491d3425b7b2fe2051772b0006860c26e8a57b90 /tmp/guacamole-server-1.4.0.tar.gz' | shasum -a 256 --check tar -zxvf /tmp/guacamole-server-1.4.0.tar.gz -C /tmp cd /tmp/guacamole-server-1.4.0/ ./configure --with-init-dir=/etc/init.d --disable-guacenc make make install ldconfig systemctl daemon-reload systemctl start guacd systemctl enable guacd ## Install Guacamole Client wget --no-verbose --show-progress --progress=bar:force -P /tmp https://downloads.apache.org/guacamole/1.4.0/binary/guacamole-1.4.0.war 2>&1 echo '92fb06e3ce8fe4f932ddfdffd75a352c06ab58d3bd0a946faa5beda73e8592f0 /tmp/guacamole-1.4.0.war' | shasum -a 256 --check mkdir -p /opt/guacamole mv -v /tmp/guacamole-1.4.0.war /opt/guacamole ln -v -s /opt/guacamole/guacamole-1.4.0.war /var/lib/tomcat9/webapps/guacamole.war
