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Accepted Answer
Solved it. FYI, it was a matter of changing
PermitRootLogin without-password in /etc/ssh/sshd_config
Hi!
EDIT: this is incorrect, the errors refer to the lines below them, not above!
It looks like OpenSSH is looking for your key but cannot find it:
debug1: identity file /Users/diego/.ssh/id_rsa type 1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_rsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_dsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_dsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_ecdsa type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_ecdsa-cert type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_ed25519 type -1
debug1: key_load_public: No such file or directory
debug1: identity file /Users/diego/.ssh/id_ed25519-cert type -1
Where are you storing your private key? If it’s not stored as one of the file names above, you will need to pass it manually:
ssh -i path_to_ssh_key user@host