I can't connect to my VM on Google cloud

Question

I can't SSH my VM server, every time I tried it failed, please help:

1. I can't connect to it via the browser, the error code is : (#79)
2. I also can't SSH to my server via SSH client See Connection error

btw, I already uploaded the SSH public key to the METADATA and also the private key to PUTTY:

rsa-key-20181119    ssh-rsa AAAAB3NzaC1yc2EAAAABJQAAAQEAv6/V…dqLXj6O9PiFWeUnPQimuQ== rsa-key-20181119

Solution

Google provides an ssh troubleshooting guide. I suggest going through it. If the guide does not resolve the problem, the troubleshooting guide mentions connecting via serial console. connect via the serial console, & ensure the Linux guest environment is running.

I will also suggest you check this guide to ensure you're using putty & the metadata SSH keys correctly.

If none of the above works, there, are, many, other questions & answers about the "no supported authentication methods supported" error message.