kolla/docs/ansible-deployment.md

Kolla with Ansible!

Kolla supports deploying Openstack using Ansible.

Getting Started

To run the Ansible playbooks, an inventory file which tracks all of the available nodes in the environment must be speficied. With this inventory file Ansible will log into each node via ssh (configurable) and run tasks. Ansible does not require password-less logins via ssh, however it is highly recommended to setup ssh-keys.

Two sample inventory files are provided, all-in-one, and multinode. The "all-in-one" inventory defaults to use the Ansible "local" connection type, which removes the need to setup ssh keys in order to get started quickly.

More information on the Ansible inventory file can be found here.

Deploying

Add the etc/kolla directory to /etc/kolla on the deployment host. Inside of this directory are two files and a minimum number of parameters which are listed below.

All variables for the environment can be specified in the files: "/etc/kolla/globals.yml" and "/etc/kolla/passwords.yml"

kolla_external_address: "openstack.example.com"
kolla_internal_address: "10.10.10.254"

The kolla_*_address variables can both be the same. When the keepalived and haproxy containers are implemented in Ansible this will be a VIP. While waiting for completion of the services, just use the ip address of one of the nodes running the services.

network_interface: "eth0"

The network_interface is what will be given to neutron to use. It should not have an ip on the interface.

docker_pull_policy: "always"

The docker_pull_policy specifies whether Docker should always pull images from Docker Hub, or only in the case where the image isn't present locally. If you are building your own images locally without pushing them to the Docker Registry, or a local registry, you will want to set this value to "missing".

You must also have the following dependencies installed on each of the target nodes:

• MySQL-python
• docker-py (>1.2.0)
• shade

On RPM based distros these may be installed as follows:

sudo yum install -y MySQL-python
sudo yum install -y \
    gcc \
    libffi-devel \
    libxml2-devel \
    libxslt-devel \
    MySQL-python \
    openssl \
    openssl-devel
    python-devel \
sudo pip install docker-py shade

This setup will be automated as part of a future release.

For All-In-One deploys, the following commands can be run. These will setup all of the containers on the localhost. These commands will be wrapped in the kolla-script in the future.

cd ./kolla/ansible
ansible-playbook -i inventory/all-in-one -e @/etc/kolla/defaults.yml -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml site.yml

To run the playbooks for only a particular service, Ansible tags can be used. Multiple tags may be specified, and order is still determined by the playbooks.

cd ./kolla/ansible
ansible-playbook -i inventory/all-in-one -e @/etc/kolla/defaults.yml -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml site.yml --tags message-broker
ansible-playbook -i inventory/all-in-one -e @/etc/kolla/defaults.yml -e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml site.yml --tags message-broker,database

Further Reading

Ansible playbook documentation can be found here.