[EDP] Default os_auth_host cannot be localhost w/ Swift

[Matthew Farrellee]

Using the Vanilla Plugin (status w/ HDP Plugin is unknown), savanna-api takes the os_auth_host and passes it into the core-site.xml of the cluster. By default, os_auth_host is localhost, which is very reasonable as the keystone identity service and savanna-api are often deployed on the same host. However, swift-hdfs tries to use a localhost url to contact keystone, which fails.

The failure looks like,

Launcher ERROR, reason: Main class [org.apache.oozie.action.hadoop.MapReduceMain], main() threw exception, POST http://127.0.0.1:35357/v2.0/tokens/ failed on exception: java.net.ConnectException: Connection refused; For more details see: http://wiki.apache.org/hadoop/ConnectionRefused

The workaround for this bug is to always configure os_auth_host to be the host, accessible from within an instance, that runs keystone.

A better implementation would be to use os_auth_host as a bootstrap to lookup the publicUrl for the identity service, then pass that url into the core-site.xml.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/56418

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/56418
Committed: http://github.com/openstack/savanna/commit/7a7696491c1c2513183ce3e6c074b5deaa43a6d4
Submitter: Jenkins
Branch: master

commit 7a7696491c1c2513183ce3e6c074b5deaa43a6d4
Author: Sergey Reshetnyak <email address hidden>
Date: Thu Nov 14 20:38:09 2013 +0400

    Fix auth url in swift

    * fix Default os_auth_host cannot be localhost w/ Swift
    * fix using keystone v3 api with Swift

    Fixes bug: #1244309

    Change-Id: I950701db942805d3add3eb44b4dedd919d40606d