Permission denied (publickey,gssapi-keyex,gssapi-with-mic)

Ok, sánh I have tried this quite a few times and I'm sure this is very trivial but: I am trying to lớn SSH via command line on Ubuntu into my VM (Centos6) with an RSA key-pair I created using key-gen.

I have created the key-pair and appended the public key to lớn authorized_keys tệp tin and changed the permissions to lớn 600. After I SCP'ed the private key to lớn Ubuntu and tried to lớn SSH using it and I always get:

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

I have tried this 3x already and no luck. I can ping it but I can't seem to lớn figure out why it's not taking the key I made. Any suggestions?

First generate the key-pair on your Ubuntu machine.

After, copy the contents of the generated .pub tệp tin in your ssh thư mục (~/.ssh/id_rsa) and paste it to lớn the username/.ssh/id_rsaauthorized_keys tệp tin, on a new line, on your CentOS for the specific user you are logging in with.

I just had the same problem on ClearOS 7.2 while trying to lớn login through SSH using RSA from OSX.

Turns out I had to lớn add the filename of my private key (the one that resides on the client system, OSX in this case) on the client system to lớn the /etc/ssh/ssh_config tệp tin (this is the ssh client config tệp tin on the client machine). Otherwise it just wouldn't look in that tệp tin eventhough it starts with id_rsa.

The line added was:

IdentityFile ~/.ssh/id_rsa.somecomputer

"somecomputer" is whatever the rest of the filename you might have is.

I had the same problem, I solved it lượt thích this:

On the ssh server, I uncommented, and put at yes the following values in /etc/ssh/sshd_config

 RSAAuthentication yes
 PubkeyAuthentication yes

And then:

sudo service sshd restart

You can execute tail -f /var/log/auth.log command if it exists on the server and try login again, you could see the reason for the failure which is available in the log. If not, kick up the verbosity in the SSH daemon config tệp tin to lớn DEBUG and retry again. Often times it's related to lớn tệp tin permissions.

I am facing the same problem, for má, first change the server(CentOS 7.9) sshd config and allow the password login:

PasswordAuthentication yes

and restart the sshd:

systemctl restart sshd

the next time you login, it will pop the password input. Just input your ssh password or using this command to lớn add no password login:

ssh -p 22 root@{server-ip} 'mkdir -p .ssh && cát >> ~/.ssh/authorized_keys' < ~/.ssh/id_rsa.pub