Debugging Using USS shell
When debugging the server, a second server daemon can be started to a
different TCP port or alternatively the existing server can be stopped
and the same port can be used for debugging.
Debugging can be started with the following command (run as the
SSHD2
user):
> /opt/tectia/etc/init.d/sshd2 start foreground -d 4 -p 1234
In the command, -d
defines the debug level and -p
the TCP
port. With this command the debug output is displayed to the screen.
Debug can also be forwarded to a file:
> /opt/tectia/etc/init.d/sshd2 start foreground -d 4 -p 1234 >/tmp/sshd2_debug.out 2>&1
Debugging for the SFTP server subsystem can be controlled with the
SSH_SFTP_DEBUG
and SSH_SFTP_DEBUG_FILE
environment
variables. SSH_SFTP_DEBUG
defines the debug level for the file
transfer server. SSH_SFTP_DEBUG_FILE
defines the output file
for the debug messages.