How do I perform a brownfield migration
Using the migration assistant tool, you can perform a brownfield migration of your
vRealize Automation 7 source instance and
VMware Aria Automation
8.If you created infrastructure in
VMware Aria Automation
8 and
want to align it with your vRealize Automation 7 infrastructure, you must run a
migration assessment and then migrate your source environment. The migration
assistant tool compares your existing VMware Aria Automation
8 infrastructure to the infrastructure in your vRealize
Automation 7 source environment. After this comparison, the migration tool only
migrates the difference between the two environments. For example: if you created a project
named vSphere Users with one cloud template in
VMware Aria Automation
8 and your vRealize Automation 7 environment
contains a business group named vSphere Users with four blueprints, the migration
assistant tool only migrates the additional three blueprints (as VMware cloud
templates) to the VMware Aria Automation
8 vSphere Users project.If the migration is rolled back, the
existing
VMware Aria Automation
8
infrastructure is rolled back to its original state before the vRealize Automation 7
migration. Only the migrated source environment content is rolled back, leaving the
pre-migration VMware Aria Automation
8 content intact.Post-migration cloud zone tags
are not removed during rollback.
Before performing a brownfield migration,
review these considerations:
Cloud Zones
For AWS and Azure, the reservations are
merged into one when they use the same region criteria. Similarly, all vSphere
reservations are merged into one cloud zone, if they contain the same computes. New
tags are added to the cloud zone based on reservation name and reservation
policy.
IP Ranges
If your source environment contains
overlapping IP ranges, the migration to
VMware Aria Automation
8 fails. Network
Profiles
A new network profile is always created
for on-demand networks. During migration, the source environment network profiles
are merged into one when they contain the same regionId, isolation type, networks,
security groups, and load balancers.
Storage
Profiles
For Azure and vSphere, storage profiles
are merged into one when they contain the same region and storage description.
vRealize Automation 7 does not support storage profiles for AWS.
Projects
New zones are added to existing projects.
If the zone exists in the project, the memory limit, instances, and storage limits
are set to the maximum of existing project and source projects. Priority is set to
the lowest of the two (lower is higher). The user roles of existing projects are
also updated if the user already exists.