Host key error in known_hosts when trying to migrate Vertica node in CA Performance Management (CAPM)
Article ID: 37995
Updated On:
Products
Issue/Introduction
When trying to use Vertica copycluster to migrate to a new DR server, the following error stops the process:
$ vbr.py --task copycluster --config-file /opt/vertica/config/CopyClusterConfigurationFile.ini
Error: Worker process exited with error: @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the RSA key sent by the remote host is
SHA256:oVzTrRdfTzk3+mB7hp6XOmKzW/KEYO+RMM7dCwEP09k.
Please contact your system administrator.
Add correct host key in /home/dradmin/.ssh/known_hosts to get rid of this message.
Offending RSA key in /home/dradmin/.ssh/known_hosts:1
Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks.
Error: forwarding disabled due to host key check failure
Copycluster FAILED.
Environment
DX NetOps 20.2.x and later CAPM
Resolution
Remove the offending key from known_hosts of the DR Admin user (by default: dradmin) with this command:
ssh-keygen -R <IP_ADDRESS_of_TARGET>For example, if the target DR IP address is 10.20.30.40, then run:
ssh-keygen -R 10.20.30.40
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