i am new to google cloud,i just deployed my first instance it was working fine till yesterday, i used last time to set email server using this tutorial email server, but now i am unable to connect ssh in browser and also with google cloud sdk in terminal.
Website is running fine,I don't know what happened Please help
the error message in browser
Connection Failed, and we are unable to connect VM on port 22.
the error message in terminal
Warning: Permanently added 'xxx.xxx.xxx.xxx' (ECDSA) to the list of known hosts. Permission denied (publickey). ERROR: (gcloud.compute.ssh) [/usr/bin/ssh] exited with return code .
And serial console output its shows
Jul 8 10:09:26 Instance sshd: error: Could not load host key:/etc/ssh/ssh_host_ed25519_key Jul 8 10:09:27 Instance sshd: User username from 0.0.0.0 not allowed because not listed in AllowUsers Jul 8 10:09:27 Instance sshd: input_userauth_request: invalid user username [preauth] Jul 8 10:09:27 Instance sshd: Connection closed by 0.0.0.0 [preauth] –