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Use case 1: multisite identity service management

• Can't specify identity endpoint for token validation among several keystone servers in keystonemiddleware: https://bugs.launchpad.net/keystone/+bug/1488347
• After discussion, community proposed using region-name to specify the keystone server for token validation. https://review.openstack.org/#/c/216579/. Verification in progress.

Use case 2: VNF high availability across VIM

• proposed: Remote port for L2 communicate: https://bugs.launchpad.net/neutron/+bug/1484005
• will have dependency on https://bugs.launchpad.net/neutron/+bug/1486882, https://review.openstack.org/#/c/215409/

Use case 3: VNF Geo-site Redundancy

• Nova to expose quiesce / unquiesce API: https://blueprints.launchpad.net/nova/+spec/expose-quiesce-unquiesce-api
• Save the real ref to volume admin_metadata in Cinder: https://review.openstack.org/#/c/182150/

Use case 4: Centralized service for resources management and/or replication (sync tenant resources like images, ssh-keys, security groups, etc)

• Image replication across glance (there is already one BP, but need to work on this BP): https://blueprints.launchpad.net/glance/+spec/clone-image-across-regions

Material for review multisite_bp-bug_review.pdf