openstack docker changes in stackforge cookbooks
Change-Id: I0d4beac877266b177bb101e86d025d5c0497c162
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Configure openstack services with docker support
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=================================================
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Include the URL of your launchpad blueprint:
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https://blueprints.launchpad.net/openstack-chef/+spec/docker-driver-configuration
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The Docker driver is a hypervisor driver for Openstack Nova Compute. It was introduced with the Havana release.
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Docker is an open-source engine which automates the deployment of applications as highly portable, self-sufficient
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containers which are independent of hardware, language, framework, packaging system and hosting provider.
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Refer [OPENSTACK_DOCKER_DOCUMENTATION]_.
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This new change proposed will enable deployment and configuration of nova-docker driver, glance repo configuration
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and any needed config to support seemless managment of docker nodes in openstack cloud.
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Problem description
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===================
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* Currently, openstack-compute does not support nova-docker driver
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* Currently, openstack-image does not support docker container formats
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for images which includes docker and dockerref
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* [OPENSTACK_DOCKER_COOKBOOK_OLD]_ is an available
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option which is not maintained for last 2 years and it has embedded
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2 years old driver.
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Proposed change
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===============
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Add support in openstack-compute cookbook to configure [NOVA_DOCKER_DRIVER]_.
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Current support will be to download the nova docker driver from git repo and configure.
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Also change openstack-image to support container formats for docker images
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which includes docker and dockerref
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Alternatives
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------------
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None
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Data model impact
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-----------------
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None
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REST API impact
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---------------
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None
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Security impact
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---------------
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None
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Notifications impact
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--------------------
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None
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Other end user impact
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---------------------
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None
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Performance Impact
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------------------
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None
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Other deployer impact
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---------------------
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None
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Developer impact
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----------------
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None
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Implementation
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==============
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Assignee(s)
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-----------
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Primary assignee:
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- skairali@cn.ibm.com
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Other contributors:
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- ashish.billore1@in.ibm.com
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Work Items
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----------
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* Add new attributes to openstack-compute
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* Change openstack-compute / nova.conf.erb template for including nova-docker driver
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* Add new recipe for docker configuration in openstack-compute
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* Change compute.rb recipe in openstack-compute to include the new recipe based on configuration
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* Add the unit tests.
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* Change openstack-image and add new container formats in attributes
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Dependencies
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============
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* In order to configure nova-docker driver - compute nodes should be pre installed with
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docker runtime. Users can opt to use cookbook [CHEF_DOCKER]_
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In case above cookbook does not support the OS where compute is getting configured
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use doucmentation which is available at [DOCKER_RUNTIME_INSTALLATION]_.
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* This depends on Nova Docker driver [NOVA_DOCKER_DRIVER]_.
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Currently a git clone of above source in .zip format is required to complete nova configuration
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Testing
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=======
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* Add unit tests for the recipes.
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* For function and CI integration test, at least one node with OpenStack
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all-in-one deployment is recommended.
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* In order to configure a compute node as docker compute(while testing using openstack-chef-repo)
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override the attribute to true using environment which indicates whether a node is docker type or not
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* Prior to testing, install docker runtime to all compute nodes. Refer Dependencies for more details
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Documentation Impact
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====================
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* Change README.md. in openstack-compute
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References
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==========
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.. [CHEF_DOCKER] `Chef docker cookbook
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<https://github.com/bflad/chef-docker>`_
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.. [DOCKER_RUNTIME_INSTALLATION] `Docker runtime installation
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<https://docs.docker.com/installation>`_
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.. [NOVA_DOCKER_DRIVER] `Nova docker driver
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<https://github.com/stackforge/nova-docker/tree/master>`_
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.. [OPENSTACK_DOCKER_COOKBOOK_OLD] `Openstack Docker cookbook old
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<https://github.com/paulczar/cookbook-openstack-docker>`_
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.. [OPENSTACK_DOCKER_DOCUMENTATION] `Openstack Docker Documentation
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<https://wiki.openstack.org/wiki/Docker>`_
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Possible Future Enhancements
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============================
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Change openstack-telemetry cookbook to support monitoring of docker computes
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