Failed to call SCP in remote tests

[Zikai Chen]

Hi,

 I am trying to test the SCP command in remote tests, and I did something like:

testexec.CommandContext(ctx, "scp", "-P", port, localPath, dutDirWithHostname).Run(testexec.DumpLogOnError)

In my code to copy local temp files to the DUT. It worked well on some lab machines, but on machines of chromeos8*, I got:

Warning: Permanently added 'chromeos8-row18-rack17-host20,10.xxx.xxx.xxx' (ED25519) to the list of known hosts. no such identity: /home/chromeos-test/.ssh/autotest_internal_rsa: No such file or directory chromeos-test@chromeos8-row18-rack17-host20: Permission denied (publickey,keyboard-interactive). Connection closed

Does anyone know how to solve this? Do I need to add some identity files under such a situation? Thanks in advance!

[Seewai Fu]

Why do you need to use "scp"? Can you use linuxssh.GetFile(....)?

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[Zikai Chen]

I just want to test the functionality of "SCP" here so I used "SCP" instead of linuxssh.GetFile(....).

But I already discovered that the problem was due to the worker machine logging in as "chromeos-test" to the chromeos8* DUTs. If I force to log in as "root" then the SCP would be successful. I think the cause might be chromeos8* devices missing in the SSH config on the worker machine.