These files allow to install a Rudder agent automatically using cloud-init. All you need to do to use them is set the user-data field in your cloud provider to contain "#include" on one line, and the URL to the raw version of this script on the second line. Assuming you're using an image with cloud-init pre-installed, your new instance will spin…

install-rudder-agent-rpm-latest.yml

#cloud-config

# Set up the package repository to get Rudder.
# We use the "latest" pseudo-version name to always get an up-to-date agent.

write_files:
- content: |
        [Rudder_4.1]
        name=Rudder 4.1 EL repository
        baseurl=http://www.rudder-project.org/rpm-4.1/RHEL_7/
        gpgcheck=0
        gpgkey=http://www.rudder-project.org/rpm-4.1/RHEL_7/repodata/repomd.xml.key
  path: /etc/yum.repos.d/rudder.repo


# Tell the agent which server to contact
write-files:
  - path: /var/rudder/cfengine-community/policy_server.dat
    content: rudder
    owner: root:root
    permissions: '0640'

# Fire it up the first time so it's ready to roll!
runcmd:
  - rpm -Uvh http://147.75.205.161/rudder-agent-4.1.1.release-1.EL.7.x86_64.rpm
  - rudder agent run
  - rudder agent run -i