Permission denied (public key) during fetch from GitHub with Jenkins user on Ubuntu

Question

Here is my setup:

1. Jenkins is running on my linux machine as \'jenkins\' user.
2. I have generated a ssh key-pair as described in Linux - Setup Git, for the \

Answer 1

To summarise what must be done on the Jenkins server:

# 1. Create the folder containing the SSH keys if necessary
if [ ! -e ~jenkins/.ssh ]; then mkdir ~jenkins/.ssh; fi
cd ~jenkins/.ssh/

# 2. Create the SSH pair of keys
# The comment will help to identify the SSH key on target systems
ssh-keygen -C "jenkins" -f ~jenkins/.ssh/id_rsa -P ""

# 3. Assign the proper access rights
chown -R jenkins ~jenkins/.ssh/
chmod 700 ~jenkins/.ssh
chmod 600 ~jenkins/.ssh/*

Remember:

• Please keep the default "id_rsa" name when generating the keys, as other such as "id_rsa_jenkins" won't work, even if correctly set up.
• Do not use a passphrase for your key
• Check that the public key (id_rsa.pub) has been uploaded on the git server (GitHub, Bitbucket, etc). Once done, test your SSH key by running: ssh -vvv git@github.com (change address according to your git server)