SSH Key: “Permissions 0644 for 'id_rsa.pub' are too open.” on mac

Question

I generate a ssh key pair on my mac and add the public key to my ubuntu server(in fact, it is a virtual machine on my mac),but when I try to login the ubuntu server,it says:

Answer 1

I suggest you to do:

chmod 400 ~/.ssh/id_rsa

It works fine for me.

Answer 2

Just run below to your pem's

sudo chmod 600 /path/to/my/key.pem 

Answer 3

If the keys are in the ~/.ssh directory , use

chmod 400 ~/.ssh/id_rsa

If the keys are in different directory, use

chmod 400 directory_path/id_rsa

This worked for me.

Answer 4

chmod 600 id_rsa

Run above command from path where key is stored in vm ex: cd /home/opc/.ssh

Answer 5

In my case, it was a .pem file. Turns out holds good for that too. Changed permissions of the file and it worked.

chmod 400 ~/.ssh/dev-shared.pem

Thanks for all of those who helped above.

Answer 6

As for me, the default mode of id_rsa is 600, which means readable and writable.

After I push this file to a git repo and pull it from another pc, sometimes the mode of the private key file becomes -rw-r--r--.

When I pull the repo with ssh after specify the private key file, it failed and prompted warnings the same with you. Following is my script.

ssh-agent bash -c "ssh-add $PATH_OF_RSA/id_rsa; \
git pull git@gitee.com:someone/somerepo.git "

I fix this problem just by changing the mode to 600.

chmod 600 $PATH_TO_RSA/id_rsa