How to ssh to localhost without password?

Question

EDIT: Putting exactly what was done

I need to SSH localhost without password, the usual way of doing it (with public keys) do not work.

user@PC:~$ rm         


        

Answer 1

The correct and safe way of doing it is to copy the keys as has been said here.

In other cases, sshpass can be handy.

sshpass -p raspberry ssh pi@192.168.0.145

Keep in mind that this is not safe at all. Even though it is not a good idea to use it in secure environments, it can be useful for scripting, automated testing...

this can be combined with

ssh -q -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no pi@192.168.0.145

to avoid confirmation questions that prevent scripting from happening.

Again, only use this in development systems where different machines share an IP and security is not important.

https://ownyourbits.com/2017/02/22/easy-passwordless-ssh-with-sshh/

Answer 2

Two simple steps:

ssh-keygen -t rsa <Press enter for each line>
ssh-copy-id localhost

Enter password and you're done.

Answer 3

I faced the same issue even after following all the recommendations, but found out that the issue was with gnome-keyring interference.

Solution:

1. Go Search , look for “Startup Applications”
2. If you see “SSH Key Agent”, uncheck the box
3. Reboot the machine and connect to localhost.

Answer 4

I solved ssh login problem this way.

I generate the key pairs on my server side and then scp back the private key to my windows 10 computer and now I can login without password.

Previously I used key pairs generated by my window 10 laptop and there was no luck at all.

Answer 5

I encountered the same problem when running unit tests on Docker container(golang:1.13-alpine).

After sshd -Dd and ssh -vv root@localhost debugging, I found the reason:

User root not allowed because account is locked

So, we should unlock the account by passwd -u or set a password.

Answer 6

I did following 3 steps to create the password less login

1. ssh-keygen -t rsa
Press enter for each line 
2. cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys
3. chmod og-wx ~/.ssh/authorized_keys