Set up an Ansible Service Broker CI Environment. This will either set up a single host or a master with as many additional slaves as you specify.

Run vagrant up to get one host or SLAVES=3 vagrant up to get a master and three slaves.

1. Set up your hosts with CentOS 7
2. Install Ansible wherever you want to run it
3. Configure /etc/ansible/hosts with two groups named jenkins_master and jenkins_slaves. You should have 1 master and 0 or more slaves.
4. Ensure ansible is able to ssh to your master and each of your hosts.
5. run ansible-playbook asb-ci.yml

• jenkins_admin_passwd: By default the admin password is 'changeme'.
• custom_cert_file: Custom SSL cert file to use with nginx. Should already exist on your master.
• custom_key_file: Custom SSL key file to use with nginx. Should already exist on your master.
• letsencrypt: False if by default. If true and vagrant is undefined it will use certbot to set up letsencrypt certs.
• letsencrypt_hostname: hostname to configure for lets encrypt.
• letsencrypt_email: email address to use for letsencrypt.
• slave_executors: 2 by default.
• slave_ssh_private_key_file: By default this is /root/.ssh/id_rsa when not using vagrant. When using vagrant the libvirt private key is used for each host.
• slave_ssh_username: The vagrant user will be used regardless of this setting if vagrant is defined, otherwise the default is root.