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--- wiki:development:debugging [2013/03/08 17:06]
sunweaver [Logging in X2Go Perl Scripts]
+++ wiki:development:debugging [2024/07/01 17:36] (current)
uli42 [Debugging x2goclient on Windows]
@@ Line 12: / Line 12: @@
 root@x2goserver:~$ tail -f /var/log/syslog | grep x2go
 </code>
+Other logging locations apart from the system's log are:
+  * X2Go Server: ''/var/log/syslog''
+  * X2Go Client: stderr (use ''%%--debug%%'')
+  * PyHoca-GUI: stderr (use ''%%--libdebug --debug%%'')
+  * Xsession itself: ''$HOME/.xsession-x2go-errors''
+  * NX (server-side): ''$HOME/.x2go/C-<sessionid>/session.*''
+  * NX (client-side): ''$HOME/.x2go/S-<sessionid>/session.*''
 ===== Enable Debug Output =====
@@ Line 52: / Line 61: @@
 The log files normally get written to ''/var/log/x2gobroker/*.log''
+You can also run
+<file>
+root@broker:~$ x2gobroker-daemon-debug
+</file>
+as user ''root''. This is equivalent to running the broker daemon provided by the package ''x2gobroker-daemon'', but you will see all output piped to stderr while the X2Go Session Broker daemon runs in foreground mode.
 ==== Python X2Go / PyHoca Debugging ====
-The PyHoca clients both have a ''--libdebug'' option. Run ''pyhoca-gui'' or ''pyhoca-cli'' from the command line with that option enabled and you get blasted with debug output.
+The PyHoca clients both have a ''%%--libdebug%%'' option. Run ''pyhoca-gui'' or ''pyhoca-cli'' from the command line with that option enabled and you get blasted with debug output.
 ===== Customizing Debug Messages =====
@@ Line 64: / Line 79: @@
 ==== Logging in X2Go Server's Perl Scripts ====
-Whereever you want to write a line to syslog from an X2Go Perl script, place this command:
+Whereever you want to write a line to syslog from an X2Go Server's Perl script, place this command:
 <code>
@@ Line 71: / Line 86: @@
-==== Logging in X2go Shell/Bash Scripts ====
+==== Logging in X2Go Server's Shell/Bash Scripts ====
 Whereever you want to write a line to syslog from an X2Go Shell/Bash script, place this command:
@@ Line 80: / Line 95: @@
+==== Logging in X2Go Session Broker's Python Module ====
+Whereever you want to write a line to ''/var/log/x2gobroker/broker.log'' from one of the python-x2gobroker module files, place this command:
+<code>
+# at the top of the module file:
+from x2gobroker.loggers import logger_broker
+# [...] then further below, wherever needed:
+logger_broker.debug('<your message>')
+</code>
+==== Debugging x2goclient on Windows ====
+This is a bit tricky. You need to run the debug version of x2goclient in a cmd window. The debug version is part of the xgoclient installation package for Windows and is called ''x2goclient.debug.exe''. If it is not available on you machine re-run the installer.
+Run ''<path_to_your_installation>\x2goclient --debug --libssh-debug --libssh-packetlog 2>logfile.txt'' (+ further options you might require) and run your session as usual. The session log file ''logfile.txt'' will be created in the current directory and can be opened e.g. with notepad.
+Run ''x2goclient --help'' for available options.
+<note important>important The options are always prefixed by two ''-'', your browser might display them as one!</note>

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