The access logs are of very limited utility, providing little information beyond the status code (500). Please provide the log output from:
1) Guacamole itself (this will likely be in "catalina.out", but could also be in journalctl or elsewhere, depending on how Tomcat is installed/packaged in your case) 2) guacd (this will be syslog, likely /var/log/messages, /var/log/syslog, or journalctl, depending on your distribution) Thanks, - Mike On Tue, Oct 24, 2017 at 11:47 PM, Youhei Ootsuki <youhei.oots...@gmail.com> wrote: > Hi, > > > Would you like to read this log ? > > Suddenly "HTTP 500 ERROR" is occurring. > > The setting at that time is as follows > > ------- setting --------- > > <connection name="Catalyst 3750 V2(ssh)"> > <protocol>ssh</protocol> > <param name="hostname">*********</param> > <param name="port">22</param> > <param name="enable-sftp">true</param> > <param name="username">*********</param> > <param name="password">*********</param> > <!-- param name="color-scheme">black-white</param --> > </connection> > > ------- > > > > ------- log ------- > > > 25/Oct/2017:15:21:10 "GET /GUAC/api/patches HTTP/1.1" 200 > 25/Oct/2017:15:21:10 "GET /GUAC/api/languages HTTP/1.1" 200 > 25/Oct/2017:15:21:10 "POST /GUAC/api/tokens HTTP/1.1" 403 > 25/Oct/2017:15:21:33 "POST /GUAC/api/tokens HTTP/1.1" 403 > 25/Oct/2017:15:21:42 "POST /GUAC/api/tokens HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "POST /GUAC/api/tokens HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET > /GUAC/api/session/data/default/connectionGroups/ROOT/tree?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET > /GUAC/api/patches?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET > /GUAC/api/session/data/default/users/youhei-otsuki?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > > > 25/Oct/2017:15:21:42 "GET /GUAC/images/magnifier.png HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/protocol-icons/guac-text.png > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/protocol-icons/guac-monitor.png > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/action-icons/guac-logout-dark.png > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/arrows/down.png HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/user-icons/guac-user.png HTTP/1.1" > 200 > 25/Oct/2017:15:21:42 "GET > /GUAC/api/session/data/default/self/permissions?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET > /GUAC/api/session/data/default/activeConnections?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/action-icons/guac-home-dark.png > HTTP/1.1" 200 > 25/Oct/2017:15:21:42 "GET /GUAC/images/action-icons/guac-config-dark.png > HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/settings/touchscreen.png HTTP/1.1" > 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/settings/touchpad.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/settings/tablet-keys.png HTTP/1.1" > 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/settings/zoom-in.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/settings/zoom-out.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "POST /GUAC/api/tokens HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/share.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/action-icons/guac-back.png HTTP/1.1" > 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/drive.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/layouts/en-us-qwerty.json HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/app/element/templates/blank.html HTTP/1.1" > 200 > > > > > 25/Oct/2017:15:21:54 "GET > /GUAC/api/session/data/default/connections/Catalyst%203750%20V2(ssh)?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/x.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET /GUAC/images/logo-144.png HTTP/1.1" 200 > 25/Oct/2017:15:21:54 "GET > /GUAC/websocket-tunnel?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0&GUAC_DATA_SOURCE=default&GUAC_ID=Catalyst%203750%20V2(ssh)&GUAC_TYPE=c&GUAC_WIDTH=1475&GUAC_HEIGHT=864&GUAC_DPI=96&GUAC_AUDIO=audio%2FL8&GUAC_AUDIO=audio%2FL16&GUAC_IMAGE=image%2Fjpeg&GUAC_IMAGE=image%2Fpng > HTTP/1.1" 500 > 25/Oct/2017:15:21:54 "GET > /GUAC/api/session/tunnels/3f75fd9f-1dc5-469c-a50e-7d11d1c465b9/activeConnection/connection/sharingProfiles?token=5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 404 > 25/Oct/2017:15:22:09 "POST /GUAC/api/tokens HTTP/1.1" 200 > 25/Oct/2017:15:22:09 "GET /GUAC/images/action-icons/guac-home.png HTTP/1.1" > 200 > 25/Oct/2017:15:22:09 "GET /GUAC/images/circle-arrows.png HTTP/1.1" 200 > 25/Oct/2017:15:22:09 "GET /GUAC/images/action-icons/guac-logout.png > HTTP/1.1" 200 > 25/Oct/2017:15:22:16 "DELETE > /GUAC/api/tokens/5B2E50C517D0B38A68B5824EA84D5D6B4F1FDC6430834B581C7275195DAAB5F0 > HTTP/1.1" 204 > 25/Oct/2017:15:22:16 "POST /GUAC/api/tokens HTTP/1.1" 403 > > > > > Don’t hesitate to contact me if you have any questions. > > I would appreciate your prompt reply. > > Thanks, > > > 2017-10-22 21:49 GMT+09:00 Youhei Ootsuki <youhei.oots...@gmail.com>: >> >> Hi, >> >> Thank you very much for your reply. >> >> I got a log file >> >> Do I need any additional information? >> >> Please contact , if there is something >> >> >> >> >> 2017-10-17 11:40 GMT+09:00 Nick Couchman <vn...@apache.org>: >>> >>> On Mon, Oct 9, 2017 at 8:28 AM, Youhei Ootsuki <youhei.oots...@gmail.com> >>> wrote: >>>> >>>> Hi, >>>> >>>> >>>> >>>> Thank you very much for your reply. >>>> >>>> >>>> > At what point in the process do you get the error? >>>> >>>> I can login to My Guacamole server. ( HTTPS ) >>>> but, I can not connect to the remote server with SSH. >>>> >>>> However, RDP connection is possible.( Another remote server ) >>>> and, SSH connection to myself is also possible( Guacamole server to >>>> Guacamole server on ssh ) >>>> >>>> SSH connection to Cisco IOS is also possible. >>>> >>>> >>>> >>>> SSH connection to the latest Linux such as Debian 9, Centos 7 is >>>> impossible. >>>> >>> >>> That's very strange. I don't use Debian much, but I do use CentOS 7.4 >>> and RHEL 7.4 routinely, and connect to these hosts with Guacamole without a >>> problem. >>> >>> Can you enable debugging mode for guacd (guacamole server) and capture >>> the logs when the connection fails? You can either change the startup, or >>> stop the service and run guacd manually with the -L debug flag and the -f >>> flag and capture the output during a connection failure: >>> /usr/sbin/guacd -L debug -f >>> >>> (Use the appropriate path to guacd, wherever you have it installed.) >>> >>> -Nick >> >> >
