Merge "Add Image Management section in User Guide"
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@ -313,5 +313,171 @@ Storage
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================
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Image Management
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================
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*To be filled in*
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When a COE is deployed, an image from Glance is used to boot the nodes
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in the cluster and then the software will be configured and started on
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the nodes to bring up the full cluster. An image is based on a
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particular distro such as Fedora, Ubuntu, etc, and is prebuilt with
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the software specific to the COE such as Kubernetes, Swarm, Mesos.
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The image is tightly coupled with the following in Magnum:
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1. Heat templates to orchestrate the configuration.
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2. Template definition to map baymodel parameters to Heat
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template parameters.
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3. Set of scripts to configure software.
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Collectively, they constitute the driver for a particular COE and a
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particular distro; therefore, developing a new image needs to be done
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in conjunction with developing these other components. Image can be
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built by various methods such as diskimagebuilder, or in some case, a
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distro image can be used directly. A number of drivers and the
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associated images is supported in Magnum as reference implementation.
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In this section, we focus mainly on the supported images.
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All images must include support for cloud-init and the heat software
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configuration utility:
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- os-collect-config
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- os-refresh-config
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- os-apply-config
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- heat-config
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- heat-config-script
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Additional software are described as follows.
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Kubernetes on Fedora Atomic
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---------------------------
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This image is built manually by the instructions provided in this `Atomic guide
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<https://github.com/openstack/magnum/blob/master/doc/source/dev/build-atomic-image.rst>`_
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The Fedora site hosts the current image `fedora-21-atomic-5.qcow2
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<https://fedorapeople.org/groups/magnum/fedora-21-atomic-5.qcow2>`_.
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This image has the following OS/software:
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+-------------+-----------+
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| OS/software | version |
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+=============+===========+
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| Fedora | 21 |
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+-------------+-----------+
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| Docker | 1.8.1 |
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+-------------+-----------+
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| Kubernetes | 1.0.4 |
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+-------------+-----------+
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| etcd | 2.0.10 |
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+-------------+-----------+
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| Flannel | 0.5.0 |
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+-------------+-----------+
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The following software are managed as systemd services:
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- kube-apiserver
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- kubelet
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- etcd
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- flannel (if specified as network driver)
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- docker
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The following software are managed as Docker containers:
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- kube-controller-manager
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- kube-scheduler
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- kube-proxy
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The login for this image is *minion*.
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Kubernetes on CoreOS
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--------------------
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CoreOS publishes a `stock image
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<http://beta.release.core-os.net/amd64-usr/current/coreos_production_openstack_image.img.bz2>`_
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that is being used to deploy Kubernetes.
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This image has the following OS/software:
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+-------------+-----------+
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| OS/software | version |
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+=============+===========+
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| CoreOS | 4.3.6 |
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+-------------+-----------+
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| Docker | 1.9.1 |
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+-------------+-----------+
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| Kubernetes | 1.0.6 |
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+-------------+-----------+
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| etcd | 2.2.3 |
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+-------------+-----------+
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| Flannel | 0.5.5 |
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+-------------+-----------+
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The following software are managed as systemd services:
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- kubelet
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- flannel (if specified as network driver)
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- docker
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- etcd
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The following software are managed as Docker containers:
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- kube-apiserver
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- kube-controller-manager
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- kube-scheduler
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- kube-proxy
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The login for this image is *core*.
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Kubernetes on Ironic
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--------------------
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This image is built manually using diskimagebuilder. The scripts and instructions
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are included in `Magnum code repo
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<https://github.com/openstack/magnum/tree/master/magnum/templates/kubernetes/elements>`_.
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Currently Ironic is not fully supported yet, therefore more details will be
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provided when this driver has been fully tested.
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Swarm on Fedora Atomic
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----------------------
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This image is the same as the image for Kubernetes on Fedora Atomic and was
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built manually by the instructions provided in this `Atomic guide
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<https://github.com/openstack/magnum/blob/master/doc/source/dev/build-atomic-image.rst>`_
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The Fedora site hosts the current image `fedora-21-atomic-5.qcow2
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<https://fedorapeople.org/groups/magnum/fedora-21-atomic-5.qcow2>`_.
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This image has the following OS/software:
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+-------------+-----------+
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| OS/software | version |
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+=============+===========+
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| Fedora | 21 |
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+-------------+-----------+
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| Docker | 1.8.1 |
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+-------------+-----------+
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| Kubernetes | 1.0.4 |
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+-------------+-----------+
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| etcd | 2.0.10 |
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+-------------+-----------+
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| Flannel | 0.5.0 |
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+-------------+-----------+
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The login for this image is *fedora*.
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Mesos on Ubuntu
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---------------
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This image is built manually using diskimagebuilder. The instructions are
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provided in this `Mesos guide
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<https://github.com/openstack/magnum/blob/master/doc/source/dev/mesos.rst>`_.
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The Fedora site hosts the current image `ubuntu-14.04.3-mesos-0.25.0.qcow2
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<https://fedorapeople.org/groups/magnum/ubuntu-14.04.3-mesos-0.25.0.qcow2>`_.
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+-------------+-----------+
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| OS/software | version |
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+=============+===========+
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| Ubuntu | 14.04 |
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+-------------+-----------+
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| Docker | 1.8.1 |
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+-------------+-----------+
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| Mesos | 0.25.0 |
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+-------------+-----------+
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| Marathon | |
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+-------------+-----------+
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