Auto Light Dark
Auto Light Dark
Breadcrumbs

Linux Error - No suitable authentication method found to complete authentication (publickey, keyboard-interactive).

Overview

When attempting to connect to Linux hosts, you may see one of the following errors in the Cloudamize ADC logs or ADC UI

image-20260220-064938.png

  • SshAuthenticationException = No suitable authentication method found to complete authentication (publickey,keyboard-interactive)

  • SshAuthenticationException = No suitable authentication method found to complete authentication (publickey,gssapi-keyex,gssapi-with-mic,keyboard-interactive)

Root Cause

The Cloudamize Agentless Data Collector (ADC) supports Password Authentication and SSH Key Authentication (.ppk format). It does not support gssapi-keyex, gssapi-with-mic, or keyboard-interactive authentication methods.

This error occurs when the target Linux server's SSH daemon (sshd) rejects or is not configured to accept the authentication method provided in the ADC.

Troubleshooting Steps

Option 1: Enable Password Authentication (Recommended for Agentless)

You must modify the SSH daemon configuration on the target Linux server to allow password-based logins.

  1. Log in to the remote Linux server as a user with sudo or root privileges.

  2. Open the SSH configuration file (usually located at /etc/ssh/sshd_config) using a text editor:

    sudo vi /etc/ssh/sshd_config

  3. Locate the line PasswordAuthentication.

  4. Change the value from no to yes:

    PasswordAuthentication yes

  5. Save the file and exit the editor.

  6. Restart the SSH daemon to apply the changes

Option 2: Use the Cloudamize Agent (Alternative)

If your organization cannot or will not enable Password Authentication due to security policies:

  • Install the Cloudamize Agent locally on the Linux server.

  • The Agent runs as a local service and does not require remote SSH authentication to collect data, bypassing the need for any SSH configuration changes.

  • You can find the Linux Agent installation instructions KB here.

Always ensure that any changes to /etc/ssh/sshd_config comply with your organization's security standards before implementation.

If the issue persists, please capture a screenshot of the error output and collect the log_backup.txt file from the following directory on the Cloudamize Agentless DC:

C:\Program Files (x86)\CloudamizeAgentlessDc\log_backup.txt

Please attach both the screenshot and the log file in an email to helpdesk@cloudamize.com for further investigation.

If you have any queries, please get in touch with the helpdesk via our Helpdesk Portal or by email at helpdesk@cloudamize.com.