Description of problem:
RamFilter and DiskFilter are deprecated scheduling filters since OSP10. Placement now uses scheduling based on resource classes. RamFilter and DiskFilter should be removed from the default list of filters used for scheduling. As of OSP14, these filters are completely removed[0].
Deployments fail with the following type of error:
ResourceInError: resources.Controller: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"
Version-Release number of selected component (if applicable):
At least openstack-tripleo-heat-templates-8.0.7-4.el7ost.noarch
How reproducible:
Steps to Reproduce:
1. Tag nodes in to roles
2. Match the Flavor parameter on a per-role basis
3. Attempt deployment
Actual results:
"No valid host was found" error due to nova-scheduler filtering out nodes based on RamFilter, DiskFilter which provide results for nodes that are filtered using resource scheduling.
Expected results:
Successful deployments of nodes using resource scheduling.
Additional info:
[0] https://review.openstack.org/#/c/611286/
Although removing the depcreated filters is necessary, prior to the containerized Undercloud in OSP14, this change should be applied to /usr/share/instack-undercloud/puppet-stack-config/puppet-stack-config.yaml.template and not to /usr/share/openstack-tripleo-heat-templates/environments/undercloud.yaml.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2019:2624