Comment 1 for bug 1472938

Reviewed: https://review.openstack.org/320968
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=08531c170293bf13ec0c77bc396c1150998d39eb
Submitter: Jenkins
Branch: master

commit 08531c170293bf13ec0c77bc396c1150998d39eb
Author: OTSUKA, Yuanying <email address hidden>
Date: Thu Jul 14 21:07:06 2016 +0200

    Fix ironic template

    This is workaround fix to support baremetal.
    Following items are remained to support.
    * Documents
    * Functional test

    To test this template, there are some requirements and problem as below.

    Requirements:
    * `ephemeral_disk` on ironic baremetal flavor
      `ephemeral_disk` is used for docker storage instead of cinder volume.

    * `fixed_subnet` must be setup with dns_nameservers like following.
        * `neutron subnet-update private-subnet --dns-nameserver 8.8.8.8`

    * `fixed_subnet` must be IP version 4.
      if you use devstack, please add following configuration.
        * `IP_VERSION=4`

    * Fedora 23 image including kubernetes, etcd, flannel.

    Problem:
    Ironic stores `instance_info` about nova instance.
    `instance_info` contains config_drive data, but this data can be
    too large to store ironic.nodes table.
    Magnum uses large config drive data to setup k8s.
    It means, we can not start ironic instance by Magnum.

    Workaround fix is changing column type of ironic.nodes.instance_info.
    Following sql will help you.

      `alter table ironic.nodes modify instance_info LONGTEXT;`

    Partial-Implements: blueprint magnum-baremetal-full-support
    Change-Id: Ica87610b9114bff4277b492de8fe528fe2860108
    Closes-Bug: #1454895
    Closes-Bug: #1472938
    Co-Authored-By: Spyros Trigazis <email address hidden>