On Sun, 29 Sep 2024 22:01:17 +0200 richard lucassen <mailinglists@xaq.nl> wrote:
[..]
From syslog:
authpriv.info: Sep 29 22:06:38 sshd-session[18121]: pam_unix(sshd:session): session opened for user richard(uid=1001) by richard(uid=0)
user.notice: Sep 29 22:06:43 /usr/bin/x2goresume-session: client 10.241.32.92 has successfully resumed session with ID richard-50-1727639642_stDwmaker_dp24
auth.err: Sep 29 22:06:44 sshd-session[18135]: error: connect_to localhost port 31169: failed.
auth.info: Sep 29 22:06:44 sshd-session[18135]: channel_by_id: 0: bad id: channel free
auth.info: Sep 29 22:06:44 sshd-session[18135]: Disconnecting user richard 10.241.32.92 port 46732: ieof packet referred to nonexistent channel 0
authpriv.info: Sep 29 22:06:44 sshd-session[18121]: pam_unix(sshd:session): session closed for user richard
user.warn: Sep 29 22:07:15 /usr/bin/x2gosetkeyboard: /home/richard/.x2go/C-richard-50-1727639642_stDwmaker_dp24/keyboard did not appear within 30s after agent startup
ssh is still running:
1616 ? Ss 0:00 sshd: /usr/sbin/sshd [listener] 0 of 10-100 startups 4962 ? Ss 0:00 \_ sshd-session: richard [priv] 4969 ? S 0:00 \_ sshd-session: richard@notty
But the listening port has disappeared:
# ss -lnt
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 4096 0.0.0.0:54287 0.0.0.0:*
LISTEN 0 4096 0.0.0.0:111 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 4096 [::]:42063 [::]:*
LISTEN 0 4096 [::]:111 [::]:*
LISTEN 0 128 [::]:22 [::]:*
I start a new session:
23132 ? Ss 0:00 \_ sshd-session: richard [priv] 23138 ? S 0:00 \_ sshd-session: richard@notty
It runs on port 127.0.0.1:57431
ss -lnt
State Recv-Q Send-Q Local Address:Port Peer Address:Port
LISTEN 0 4096 0.0.0.0:54287 0.0.0.0:*
LISTEN 0 4096 0.0.0.0:111 0.0.0.0:*
LISTEN 0 128 0.0.0.0:22 0.0.0.0:*
LISTEN 0 128 127.0.0.1:57431 0.0.0.0:*
LISTEN 0 4096 [::]:42063 [::]:*
LISTEN 0 128 [::1]:57431 [::]:*
LISTEN 0 4096 [::]:111 [::]:*
LISTEN 0 128 [::]:22 [::]:*
I suspend the session:
user.notice: Sep 29 22:17:30 /usr/bin/x2goumount-session[24148]: successfully unmounted "/tmp/.x2go-richard/media/disk/_home_richard_x2go"
user.notice: Sep 29 22:17:31 /usr/bin/x2gosuspend-session: session with ID richard-50-1727640825_stDwmaker_dp24 has been suspended successfully
The ssh notty session on port 127.0.0.1:57431 has disappeared. That's OK I think.
I reconnect, the client segfaults
syslog:
authpriv.info: Sep 29 22:21:30 sshd-session[24354]: pam_unix(sshd:session): session opened for user richard(uid=1001) by richard(uid=0)
user.notice: Sep 29 22:21:35 /usr/bin/x2goresume-session: client 10.241.32.92 has successfully resumed session with ID richard-50-1727640825_stDwmaker_dp24
auth.err: Sep 29 22:21:36 sshd-session[24360]: error: connect_to localhost port 57429: failed.
auth.info: Sep 29 22:21:36 sshd-session[24360]: channel_by_id: 0: bad id: channel free
auth.info: Sep 29 22:21:36 sshd-session[24360]: Disconnecting user richard 10.241.32.92 port 46648: ieof packet referred to nonexistent channel 0
authpriv.info: Sep 29 22:21:36 sshd-session[24354]: pam_unix(sshd:session): session closed for user richard
Anyone some hints to debug this? I have the idea that somewhere the X tunneling via ssh fails. That's why I'd like to know if it's possible to connect directly to x2goserver. I'm working through a wireguard tunnel, I do not need encryption.
R.
-- richard lucassen http://contact.xaq.nl/