--- prelude: > - In the Newton cycle a new kolla-host playbook was introduced. The kolla-host playbook is intended to prepare servers for use as kolla deployment hosts. The kolla-host playbook requires the nodes to have an os installed and be reachable via ssh. Currently the kolla-host playbook supports ubuntu 14.04, ubuntu 16.04 and centos 7.2 as target servers. See features section for more details. features: - The kolla-host playbook supports bootstrapping clean os installations to enable them to be used as kolla hosts. When the playbook completes the bootstrapped systems should pass the kolla prechecks. - The kolla-host playbook will install docker 1.11 and docker-py on all baremetal nodes. - The kolla-host playbook will configure /etc/host with the hostname and ip address of all nodes in the kolla inventroy if customize_etc_host set to its default value of True. security: - The kolla-host playbook will create a kolla user on all nodes using the ssh-key specified in the passwords.yml. The kolla user will be granted passwordless sudo privileges on the host. this behavior can be disabled by setting create_kolla_user=False