A fix is available
APAR status
Closed as documentation error.
Error description
----------------------------- Removing a Region in ICM 1. Remove all instances in the Region which you want to delete. 2. Remove all aggregate in the Region which you want to delete. nova --os-region-name RegionOne aggregate-list # Print a list of all aggregates in the Region which you want to delete. nova --os-region-name RegionOne aggregate-remove-host <id> <host> # Remove the host with name <host> from the aggregate with id <id>. nova --os-region-name RegionOne aggregate-delete <id> # Delete an aggregate with id <id>. 3. Remove all availability zone in the Region which you want to delete. If the aggregate has been removed at step 2, the relevant availability zones will be deleted too. Below steps will guide you how to remove the default availability zone name: nova On the control node and each compute nodes using the region which you want to delete, update the statements in the /etc/nova/nova.conf Find below statements: default_availability_zone=nova default_schedule_zone=nova Update to: default_availability_zone= default_schedule_zone= Run the following commands to restart : service openstack-nova-api restart service openstack-nova-compute restart Above steps will delete default availability zone name nova, but actually the nova compute services are still available. If you really don't want this compute node in the region, you can stop the compute service. service openstack-nova-compute stop 4. Update the Keystone entries that relate to the region that you want to remove, for example, RegionOne: source /root/keystonerc keystone endpoint-list |grep RegionOne | cut -d '|' -f2 | while read endpoint; do keystone endpoint-delete $endpoint; done 5. Stop all openstack services on those node which using the deleted Region. You can refer to below link to know openstack services on each nodes. http://www-03preprod.ibm.com/support/knowledgecenter/SST55W_4.1 . 0/liaca/ liaca_CMwO_services.html?lang=en -------------
Local fix
no workaround
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM Cloud Orchestrator 2.4 documentation and would like to remove a region. **************************************************************** * PROBLEM DESCRIPTION: IBM Cloud Orchestrator 2.4 documentation does not point out all required steps necessary while removing a region and with it the dependent availability zones. **************************************************************** * RECOMMENDATION: Review the next update of IBM Cloud Orchestrator 2.4 FP 4 Information Center when available. The documentation changes can also be found in the error description.
Problem conclusion
In chapter "IBM Cloud Orchestrator 2.4.0.3 > Installing > Uninstalling > Removing a region will list now all steps required to remove the region as well as the related availability zones. The previous instruction references the entries in keystone regarding the region (end points) only. Removing this references only may keep the configured availability zones for domains and projects entries. This make the complete OpenStack services very slow since it tries to resolve the orphan availability zones. To resolve this issue all projects and domains must be visited to check if there is an availability zone configured which does not exist anymore. Next update of IBM Cloud Orchestrator 2.4, coming with FP4, will make changes available. The documentation changes can also be found in the error description.
Temporary fix
Comments
APAR Information
APAR number
ZZ00494
Reported component name
SMRTCLOUD ORCHS
Reported component ID
5725H2800
Reported release
240
Status
CLOSED DOC
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-11-25
Closed date
2016-02-26
Last modified date
2016-02-26
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Applicable component levels
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS4KMC","label":"IBM Cloud Orchestrator"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"240","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
03 November 2021