import the origin database to migrate on local computer
Uninstall all known useless Odoo add-ons. Warning: do not uninstall add-ons for which the disappearance in the finale version is managed by Open Upgrade scrips.
Unsure all the add-ons are migrated in the final Odoo version
(optional) De-active all the website views

Local Migration process

launch the origin database ORIGIN_DATABASE_NAME with original version of Odoo, with odoo service ORIGIN_SERVICE
launch the following command:

./upgrade.sh {ORIGIN_VERSION} {DESTINATION_VERSION} {ORIGIN_DATABASE_NAME} {ORIGIN_SERVICE}

ex: ./upgrade.sh 14 16 elabore_20241208 odoo14

Inspect the list of add-ons identified as missing in the final Odoo docker image:
- if you want to uninstall some of them:
  - STOP the process (N)
  - uninstall the concernet add-ons manually
  - launch the migration script again
- if the list suits you, show can go on (Y)!

The migration process should run all the middle-migrations until the last one without action needed from you.

Deploy migrated base

Retrieve the migrated database (vps odoo dump)
Copy the database on the concerned VPS
vps odoo restore

Manage the add-ons to uninstall

The migration script will manage the uninstall of Odoo add-ons:

add-ons we want to uninstall, whatever the reasons
add-ons to uninstall because they do not exist in the final Odoo docker image

At the beginning of the process, the script compare the list of add-ons installed in the origin database, and the list of add-ons available in the finlal Odoo docker image.

The whole list of add-ons to uninstall is displayed, and needs a confirmation before starting the migration.

Customize the migration scripts

FEATURE COMING SOON...

Manage migration issues

As the migration process is performed on a copy of the orginal database, the process can be restarted without limits.

Some Odoo migration errors won't stop the migration process, then be attentive to the errors in the logs.