Git – How to Upload New Repo to BitBucket Using SSH on Linux

You used the SSH link to clone your repository. For this to work you need to do one of the following:

1. Use ssh-keygen to generate a private key, and add the equivalent public key to bitbucket.
2. Just use https, and enter your username and password each time (or store it in .netrc)

It doesn't matter that your repo is private, your problem is in authentication to bitbucket.

Both answers I got mention permissions but that I had already checked. Both ~/.ssh/id_rsa and ~/.ssh/id_rsa are owned by my user with 664 and 600 respectively. I even tried chmod 777 to both files but got the same message.

777 permissions will never work. SSH permissions are highly restrictive and opening them up more like that will only cause errors. Also your comments to other questions state that these are your current permissions:

-rw-rw-r--. 1 centos centos 47 May 17 20:33 /home/centos/.ssh/config 

Those are 664 permissions which are -rw-rw-r--. What you want is 600 permissions which would be -rw-------. So please try this; first change the ~/.ssh/config permissions like this:

chmod 600 /home/centos/.ssh/config

Now do the same for ~/.ssh/id_rsa

chmod 600 /home/centos/.ssh/id_rsa

Also, I am not too sure what the Bitbucket SSH domain/user combo would be but it might be worth it to debug the process by using the SSH command with the -v (verbose) flag to see in detail what is happening. A command like this would help:

ssh -v -T git@bitbucket.org

The -v would be the verbose output and the -T would be setting SSH to “disable pseudo-tty allocation” so it would not be creating a real interactive session; it will essentially just attempt to connect to the remote host and then drop the connection. Useful for testing.