Sahara fails to deploy a cluster with upper-case letters

[Robert Nettleton]

Sahara fails to deploy a cluster that contains upper-case letters in the associated cluster name.

When an attempt is made to start a cluster with upper-case letters, the following error occurs after a few minutes:

"
2014-03-31 12:36:50.756 15438 ERROR sahara.plugins.hdp.versions.version_1_3_2.versionhandler [-] Create host command failed. {
  "status" : 400,
  "message" : "Attempted to add unknown hosts to a cluster. These hosts have not been registered with the server: my-uppercasecluster-mastertemplateone-001.novalocal"
}
2014-03-31 12:36:50.756 15438 ERROR sahara.service.api [-] Can't configure cluster 'MY-UpperCaseCLUSTER' (reason: Failed to Provision Hadoop Cluster: Failed to add host: {
  "status" : 400,
  "message" : "Attempted to add unknown hosts to a cluster. These hosts have not been registered with the server: my-uppercasecluster-mastertemplateone-001.novalocal"
})
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api Traceback (most recent call last):
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/service/api.py", line 208, in _provision_cluster
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api plugin.configure_cluster(cluster)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/plugins/hdp/ambariplugin.py", line 240, in configure_cluster
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api self.create_cluster(cluster)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/plugins/hdp/ambariplugin.py", line 62, in create_cluster
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api cluster.hadoop_version)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/plugins/hdp/ambariplugin.py", line 178, in _provision_cluster
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api cluster_spec, servers, ambari_info, name)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/plugins/hdp/versions/version_1_3_2/versionhandler.py", line 566, in provision_cluster
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api cluster_spec, servers, ambari_info, name)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api File "/root/bob_test/savanna/sahara/plugins/hdp/versions/version_1_3_2/versionhandler.py", line 254, in _add_hosts_and_components
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api 'Failed to add host: %s' % result.text)
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api HadoopProvisionError: Failed to Provision Hadoop Cluster: Failed to add host: {
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api "status" : 400,
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api "message" : "Attempted to add unknown hosts to a cluster. These hosts have not been registered with the server: my-uppercasecluster-mastertemplateone-001.novalocal"
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api }
2014-03-31 12:36:50.756 15438 TRACE sahara.service.api
2014-03-31 12:36:50.895 15438 INFO sahara.service.api [-] Cluster status has been changed: id=3f1423f9-fd38-4309-8e7a-6aef3546a22a, New status=Error"

This error appears to occur when the HDP plugin is used, but may be a more general problem in Sahara.

Sahara should be modified to either:

1. Handle the validation of the cluster name prior to the attempt to provision a cluster, and present a useful error message to the user, so that the cluster startup can be re-attempted with a valid name

or

2. Sahara should automatically convert the cluster name into a lower-case name, and indicate this to the user.

[Andrew Lazarev (alazarev)]

Actually this is a dupe of bug #1232075. But this one contains much better description on what is going wrong. So, closing bug #1232075 as dupe of this.

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/68740
Committed: https://git.openstack.org/cgit/openstack/sahara/commit/?id=252b2aebd619549828986de9406b37e0949f2f90
Submitter: Jenkins
Branch: master

commit 252b2aebd619549828986de9406b37e0949f2f90
Author: Andrew Lazarev <email address hidden>
Date: Fri Jan 24 16:51:53 2014 -0800

    Forced lowercase for instance names

    Closes-Bug: #1232075
    Closes-Bug: #1300407

    Change-Id: I95ea66b82cd91fba82c85b2106713d25769d7f59