New 4.17.3 Debian 12 install cant connect to old HostKeyAlgorithms SSH box

[Johan Thomas]

Hi

I have a strange issue. I made a brand new install from repository on a Debian 12

I test it with linux ssh nodes and it works great (with openssh executor and SSHJ)

Then i add old avaya network switch and i doesnt work. Auth is ok but after i have a "broken pipe" error with openssh executor and with sshj : "Broken transport; encountered EOF" 

For investigation, i tested connecting from rundeck debian 12 CLI to avaya switches via ssh. At first it doesnt work because i have to add  HostKeyAlgorithms diffie-hellman to /etc/ssh/ssh_config but after i can connect and test my commands without any errors

I retry with my rundeck jobs with openssh executor in debug but it ends up with : 

debug1: Sending command: show system verbose
debug2: channel 0: request exec confirm 1
debug3: send packet: type 98
debug3: client_repledge: enter
debug1: pledge: fork
debug2: channel_input_open_confirmation: channel 0: callback done
debug2: channel 0: open confirm rwindow 1000 rmax 1000
debug2: channel 0: read failed rfd 4 maxlen 1000: Broken pipe
debug2: channel 0: read failed
debug2: chan_shutdown_read: channel 0: (i0 o0 sock -1 wfd 4 efd 6 [write])
debug2: channel 0: input open -> drain
debug2: channel 0: ibuf empty
debug2: channel 0: send eof
debug3: send packet: type 96
debug2: channel 0: input drain -> closed
debug3: send packet: type 1
debug1: channel 0: free: client-session, nchannels 1
debug3: channel 0: status: The following connections are open:
#0 client-session (t4 [session] r85460946 i3/0 o0/0 e[write]/0 fd -1/5/6 sock -1 cc -1 io 0x00/0x00)
Connection to x.x.x.x closed by remote host.
Transferred: sent 2416, received 1128 bytes, in 0.0 seconds
Bytes per second: sent 242915.7, received 113414.3
debug1: Exit status -1
[ssh-exec]: result code: 255, success: false
Failed: NonZeroResultCode: [ssh-exec] Result code: 255
[workflow] finishExecuteNodeStep(AVAYA-TEST-BACKUP): NodeDispatch: NonZeroResultCode: [ssh-exec] Result code: 255

I made an issue on Rundeck github

If someone has an idea ? i need these avaya hosts to work with SSH i have a lot of them :(

Thanks in advance

[rac...@rundeck.com]

Hi,

Could you try using this plugin to dispatch commands against your switch?

Regards!