I am trying to use ansible to configure a raspberry pi 3A+ with raspbian 10. It is only copying files into a directory. Each time I reinstall, it seems to work for a while, and then stop working.
When it stops working, the minimal problem is that ssh raspberrypi works but ssh raspberrypi "echo HELLO" hangs forever. I took this suggestion https://stackoverflow.com/a/53398252 and ssh -t raspberrypi "echo HELLO" works!
So I am going to try to make ansible do that. However, I am still trying to figure out why it works for a minutes or hours on a new installation and then stops working. I can run the remote command without -t on all my other devices.
Here is the output when it hangs:
ssh raspberrypi "echo HELLO"
...
debug1: Remote: /home/pi/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug1: Remote: /home/pi/.ssh/authorized_keys:1: key options: agent-forwarding port-forwarding pty user-rc x11-forwarding
debug2: channel_input_open_confirmation: channel 0: callback start
debug2: fd 3 setting TCP_NODELAY
debug2: client_session2_setup: id 0
debug1: Sending environment.
debug1: Sending env LANG = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug1: Sending env LC_ALL = en_US.UTF-8
debug2: channel 0: request env confirm 0
debug1: Sending command: echo HELLO
debug2: channel 0: request exec confirm 1
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
actually here is some of -vvv:
debug3: Ignored env _
debug1: Sending command: echo TEST
debug2: channel 0: request exec confirm 1
debug3: send packet: type 98
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 0 rmax 32768
I have been trying to find out more about what -t does to figure out what could have changed.
My other raspberry pi where remote commands work even work like this ssh raspberrypi -T "echo TEST" and I think -T does the opposite of -t...
Also this is what is happening on the raspberry pi that hangs when you try to ssh commands to it:
$ ps aux | grep ssh
root 613 0.0 1.5 10728 5628 ? Ss 06:05 0:00 /usr/sbin/sshd -D
root 673 0.0 1.6 12240 6316 ? Ss 06:06 0:00 sshd: pi [priv]
pi 690 0.0 0.9 12240 3516 ? S 06:06 0:00 sshd: pi
root 691 0.0 1.6 12240 6340 ? Ss 06:06 0:00 sshd: pi [priv]
pi 697 0.0 0.9 12240 3528 ? S 06:06 0:00 sshd: pi
root 1005 0.0 1.6 12240 6320 ? Ss 06:17 0:00 sshd: pi [priv]
pi 1011 0.0 0.9 12240 3512 ? S 06:17 0:00 sshd: pi
root 1081 2.8 1.6 12240 6308 ? Ss 06:27 0:00 sshd: pi [priv]
pi 1087 0.2 0.9 12240 3508 ? S 06:27 0:00 sshd: pi@pts/0
pi 1103 0.0 0.1 4784 504 pts/0 S+ 06:28 0:00 grep --color=auto ssh
even long after (one of those is my current connection, but I guess the rest are still trying to echo TEST)
