Automating Jenkins module install

I see this question has been unanswered for over a year, but here is how I solved the problem.

What you want to do is make sure that the user that runs jenkins

1. checks to see if ssh-agent is running (if not, start it)
2. checks to see if a key is loaded (if not, load one)

Put this in your ~/.bash_profile for the user that runs jenkins of the user that needs to forward agent, to ensure it runs with each new shell:

SSH_ENV="$HOME/.ssh/environment"

function start_agent {
  echo "Initializing new SSH agent..."
  /usr/bin/ssh-agent | sed 's/^echo/#echo/' > "${SSH_ENV}"
  echo succeeded
  chmod 600 "${SSH_ENV}"
  . "${SSH_ENV}" > /dev/null
  ssh-add .ssh/id_rsa
  cat .ssh/id_rsa.pub
}

#Source SSH Settings

if [ -f "${SSH_ENV}" ]
then
  . "${SSH_ENV}" > /dev/null
  ps -ef | grep ${SSH_AGENT_PID} | grep ssh-agent > /dev/null || {
    start_agent;
  }
else
  start_agent;
fi

if [ `ssh-add -l | grep "The agent has no identities." | wc -l` == 1 ]
then
  ssh-add .ssh/id_rsa
  cat .ssh/id_rsa.pub
fi

About 50% of the code here I took from somewhere else but can't remember where to give credit. This should be fairly portable, and its use need not be limited to jenkins it should work in any ssh-agent forwarding situation.

EDIT 2

If running Jenkins on an Amazon EC2 instance, try setting HTTP_HOST to 0.0.0.0. You may not be able to bind the public interface IP directly.

EDIT 1

Check /etc/default/jenkins instead if you installed directly from the .deb package.

It appears Jenkins is listening on localhost (--httpListenAddress=127.0.0.1). In this configuration, Jenkins is not listening for connections from the network interface.

To resolve for Ubuntu, check the contents of /etc/init/jenkins.conf and append --httpListenAddress=x.x.x.x to JENKINS_ARGS (where x.x.x.x is the server's external IP address).