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SSH no longer working
Out of the blue I can no longer SSH into any of my droplets:
firstname.lastname@example.org: Permission denied (publickey).
Here is what I have tried:
- Deleting and regenerating client keys, then
ssh-copy-idto the new server after enabling
PasswordAuthenticationtemporarily. I double-checked
~/.ssh/authorized_keysand the newly generated public key is there, as it should be. Yet I am still prompted for a password, and disabling
PasswordAuthenticationcauses the above error to return.
- Checked every folder and file permission I could, including the
- Creating a new account to SSH into: nothing works.
Here is the output of
ssh email@example.com -v:
OpenSSH_8.0p1, OpenSSL 1.1.1c 28 May 2019 debug1: Reading configuration data /etc/ssh/ssh_config debug1: Connecting to mydomain.com [redacted_ip] port 22. debug1: Connection established. debug1: identity file /my/username/.ssh/id_rsa type 0 debug1: identity file /my/username/.ssh/id_rsa-cert type -1 debug1: identity file /my/username/.ssh/id_dsa type -1 debug1: identity file /my/username/.ssh/id_dsa-cert type -1 debug1: identity file /my/username/.ssh/id_ecdsa type -1 debug1: identity file /my/username/.ssh/id_ecdsa-cert type -1 debug1: identity file /my/username/.ssh/id_ed25519 type -1 debug1: identity file /my/username/.ssh/id_ed25519-cert type -1 debug1: identity file /my/username/.ssh/id_xmss type -1 debug1: identity file /my/username/.ssh/id_xmss-cert type -1 debug1: Local version string SSH-2.0-OpenSSH_8.0 debug1: Remote protocol version 2.0, remote software version libssh-0.6.5 debug1: no match: libssh-0.6.5 debug1: Authenticating to mydomain.com:22 as 'me' debug1: SSH2_MSG_KEXINIT sent debug1: SSH2_MSG_KEXINIT received debug1: kex: algorithm: ecdh-sha2-nistp256 debug1: kex: host key algorithm: ssh-rsa debug1: kex: server->client cipher: aes128-ctr MAC: hmac-sha1 compression: none debug1: kex: client->server cipher: aes128-ctr MAC: hmac-sha1 compression: none debug1: expecting SSH2_MSG_KEX_ECDH_REPLY debug1: Server host key: ssh-rsa SHA256:redacted_hash debug1: Host 'mydomain.com' is known and matches the RSA host key. debug1: Found key in /my/username/.ssh/known_hosts:1 debug1: rekey out after 4294967296 blocks debug1: SSH2_MSG_NEWKEYS sent debug1: expecting SSH2_MSG_NEWKEYS debug1: SSH2_MSG_NEWKEYS received debug1: rekey in after 4294967296 blocks debug1: Will attempt key: /my/username/.ssh/id_rsa RSA SHA256:redacted_hash debug1: Will attempt key: /my/username/.ssh/id_dsa debug1: Will attempt key: /my/username/.ssh/id_ecdsa debug1: Will attempt key: /my/username/.ssh/id_ed25519 debug1: Will attempt key: /my/username/.ssh/id_xmss debug1: SSH2_MSG_SERVICE_ACCEPT received debug1: Authentications that can continue: publickey debug1: Next authentication method: publickey debug1: Offering public key: /my/username/.ssh/id_rsa RSA SHA256:redacted_hash debug1: Server accepts key: /my/username/.ssh/id_rsa RSA SHA256:redacted_hash debug1: Authentications that can continue: publickey debug1: Trying private key: /my/username/.ssh/id_dsa debug1: Trying private key: /my/username/.ssh/id_ecdsa debug1: Trying private key: /my/username/.ssh/id_ed25519 debug1: Trying private key: /my/username/.ssh/id_xmss debug1: No more authentication methods to try. firstname.lastname@example.org: Permission denied (publickey).
As I mentioned before nothing has changed on the droplets (there are 3) and my keys stopped working at the same time on all servers.
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