Legacy Instance Migrations

Map Old Instances to New Instances

  1. Ensure you have the migration_magick gem (coming soon).
  2. run migration_magick map [ACCOUNT]
    1. The map will prefer m4 series instances over others.
    2. The map is not always accurate.  Review current instances to see if they would benefit from being split across multiple instances.
  3. Replace all app slaves and utility instances; one at a time with new instance size.
  4. Replace all DB slaves one at a time with new instance size.
  5. Schedule time with customer to replace app master and db master.
  6. At scheduled time
    1. Enable maintenance page
    2. promote app to app master, terminate old app master if needed.
    3. promote new db slave to master.
  7. Inform customer migration is complete.