Kolla allows running OpenStack in containers using Docker and Ansible for simplified and repeatable deployments. It builds container images for OpenStack components that can be customized and then deployed through Ansible playbooks. Key features include opinionated out-of-the-box configurations, customizability, and integration with tools like Docker, Kubernetes, and ELK for logging. However, caution is advised as Docker, Kolla and Kubernetes are new technologies with active development.

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Kolla
Running OpenStack in containers
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Why Containers?
• Simplify the deployment process
• Make day 2 operations better
• Improve workflow
• Repeatable, reliable, fast
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How does it work?
• Ansible and Docker (Kubernetes on the way)
• Very opinionated out of the box
• Heavily customizable
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Building
• Install Kolla
• $ pip install kolla
• Run build
• $ tools/build.py -b ubuntu
• Supports ubuntu, centos, fedora, RHEL
• Push to registry
• $ tools/build.py --push
• Build from source
• tools/build.py -t source
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Customizing builds
• How does the build work?
• Configuration file
• Template overrides
• $ kolla-build --template-override template-overrides.j2 horizon
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Customizing configurations
• As mentioned before configs can be very opinionated
• How do we customize?
• Can override every piece of configuration
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Prepare for deployment
• Docker >= 1.12
• Mount flags set to shared
• Docker-py python library
• SSH connection (for Ansible)
• Ansible >= 2.0
• Generate passwords
• $ kolla-genpwd
• Modify globals.yml
• Mainly select interface and VIP address
• Configure your Ansible inventory
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Blastoff
• $ kolla-ansible deploy
• precheck
• destroy
• reconfigure
• upgrade
• bootstrap
• etc
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Other cool things about Kolla
• Buit-in ELK stack with log forwarding
• Bitfrost for bare metal deployments
• A lot of knobs to turn stuff on
• Ansible task injection coming
• Super friendly and welcoming community
• #kolla on freenode
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Caution
• Docker is new
• Kolla is even newer
• Kubernetes is coming and it is crazy new
• Really fast moving project
• Follow IRC
• Follow Github
• Follow Launchpad
• Follow Gerrit
• Networking is not terribly flexible
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