Error: SSH authentication failed.

Products

• VMware Smart Assurance

Issue/Introduction

Pull config fails when device SSH Key changed. Receive the following VoyenceControl error message during pull operation:

ssh_connect(): <Device_IP> - SSH keys did not match

Environment

NCM - 10.1.x

Cause

• Somehow the SSH keys of device and NCM server have gone out of sync.
• A stale SSH key remains in the NCM server cache for the device.
• Hardware was added, removed or replaced on the device.

Resolution

• Login to NCM Device Server (DS) with 'root' access.
• Navigate to /root/.ssh directory.
• In this directory there is a file called known_hosts which contains the key data for each host/IP.
• To remove the key for the IP in the error, run the following command :
    ssh-keygen -R <ip address>

  Example: ssh-keygen -R #.#.#.#