Sudden issue with SFTP connector - bad gateway

Question

Hi,

We had a a few logic apps successfully running and pushing files to a remote SFTP server for several months until a few days ago (5th February). The connection suddenly started failing with the following error.

{
"error": {
"code": 502,
"source": "logic-apis-uksouth.azure-apim.net",
"clientRequestId": "xxxxxxxxxxxxxxxxxx",
"message": "BadGateway",
"innerError": {
"status": 502,
"message": "No suitable authentication method found to complete authentication (publickey,gssapi-keyex,gssapi-with-mic,keyboard-interactive).\r\nclientRequestId: xxxxxxxxxxxxxxxxxxxxxxx",
"error": {
"message": "No suitable authentication method found to complete authentication (publickey,gssapi-keyex,gssapi-with-mic,keyboard-interactive)."
},
"source": "sftpwithssh-uks.logic-ase-uksouth.p.azurewebsites.net"
}
}
}

Thing is, nothing has changed! I can still log into the same ftp server with a local client fine. Have tried recreating the credentials many times, but nothing works.

In the connection i have the option "Disable SSH host key validation" selected as it is just a standard sftp connection so cant specify ssh details.

Does anyone have any ideas what might have caused this?

Thanks

Answer 1

I was able to get around this issue by reverting to the standard FTP server connector in Logic Apps.

It was just very strange the method stopped working suddenly, but that's life :)