Article version: Enterprise Server 2.18
Resolving migration conflicts or setting up custom mappings
Before importing migration data, you can make corrections to resolve conflicts, rename incoming records, or map incoming records to existing records.
The following steps can be used to resolve conflicts or add custom mappings to your migration.
If you believe that
ghe-migrator will perform an incorrect change, you can make corrections by changing the data in conflicts.csv. You can make changes to any of the rows in conflicts.csv.
For example, let's say you notice that the
octocat user from the source is being mapped to
octocat on the target:
You can choose to map the user to a different user on the target. Suppose you know that
octocat should actually be
monalisa on the target. You can change the
target_url column in conflicts.csv to refer to
As another example, if you want to rename the
octo-org/widgets repository to
octo-org/amazing-widgets on the target instance, change the
octo-org/amazing-widgets and the
A common scenario during a migration is for migrated users to have different usernames on the target than they have on the source.
Given a list of usernames from the source and a list of usernames on the target, you can build a CSV file with custom mappings and then apply it to ensure each user's username and content is correctly attributed to them at the end of a migration.
You can quickly generate a CSV of users being migrated in the CSV format needed to apply custom mappings by using the
ghe-migrator audit command:
$ ghe-migrator audit -m user -g MIGRATION_GUID > users.csv
Now, you can edit that CSV and enter the new URL for each user you would like to map or rename, and then update the fourth column to have
rename as appropriate.
For example, to rename the user
monalisa on the target
https://example-gh.target you would create a row with the following content:
The same process can be used to create mappings for each record that supports custom mappings. For more information, see our table on the possible mappings for records.
After making changes, use the
scpcommand to apply your modified conflicts.csv (or any other mapping csv in the correct format) to the target instance:
$ scp -P 122 ~/Desktop/conflicts.csv admin@hostname:/home/admin/
Re-map the migration data using the
ghe-migrator mapcommand, passing in the path to your modified csv file and the Migration GUID:
$ ghe-migrator map -i conflicts.csv -g MIGRATION_GUID
ghe-migrator map -i conflicts.csv -g MIGRATION_GUIDcommand reports that conflicts still exist, run through the migration conflict resolution process again.