I've a problem with my Plesk account. I can't add a git repository on my domain. I've taked this screenshot.
I've copied the RSA key into my BitBucket repository but the problem still persists.
This means that ssh-keyscan -H bitbucket.org has failed to retrieve any keys. This may happen due to a number of reasons, including networking issues between your box and BitBucket.
As a workaround you may try either of the following:
Manually add public SSH host key for bitbucket.org into .ssh/git_known_hosts file (e.g. try to clone repo via shell under the respective user, then copy .ssh/known_hosts file)
The SSH key, must be copied into my BitBucket project "My project > Settings > Deployement Keys" or into my own BitBucket account "Account > Integration > SSH Keys ???
And I tried toadd manually this key into .ssh/git_known_hosts file (see screenshot) but don't work
SSH public keys (deployment keys) are used for client identification. Host public keys (which are stored in .ssh/git_known_keys file in this case) are used for server identification. These are two different entities.
I suggest trying option (1) that was outlined in the previous post -- just adapt repository URL you specify in Plesk.