Harbor upgrade and database migration guide

When upgrading your existing Habor instance to a newer version, you may need to migrate the data in your database. Refer to change log to find out whether there is any change in the database. If there is, you should go through the database migration process. Since the migration may alter the database schema, you should always back up your data before any migration.

If your install Harbor for the first time, or the database version is the same as that of the lastest version, you do not need any database migration.

NOTE: You must backup your data before any data migration.

Upgrading Harbor and migrating data

mkdir -p /tmp/harbor/config
cp -r Deploy/config /tmp/harbor/config
cp Deploy/harbor.cfg /tmp/harbor

Next, stop existing Harbor service if it is still running:
```
cd ../../Deploy/
docker-compose down
```

Get the lastest source code from Github:

$ git clone https://github.com/vmware/harbor

Before upgrading Harbor, perform data migration first. The directory migration/ contains the tool for migration. The first step is to update values of db_username, db_password, db_port, db_name in migration.cfg so that they match your system's configuration.
The migration tool is delivered as a container, so you should build the image from its Dockerfile:
```
cd migration/harbor-migration

docker build -t migrate-tool .
```

Back up database to a directory such as /path/to/backup. You need to create the directory if it does not exist.

docker run -ti --rm -v /data/database:/var/lib/mysql -v /path/to/backup:/harbor-migration/backup migrate-tool backup

Upgrade database schema and migrate data:

docker run -ti --rm -v /data/database:/var/lib/mysql migrate-tool up head

Change to Deploy/ directory, configure Harbor by updating the file harbor.cfg, you may need to refer to the configuration files you backed up during step 1. Refer to Installation & Configuration Guide for more info.
If HTTPS has been enabled for Harbor before, restore the nginx.conf and key/certificate files from the backup files in Step 1. Refer to Configuring Harbor with HTTPS Access for more info.
Run the ./prepare script to generate necessary config files.
Rebuild Harbor and restart the registry service
```
docker-compose up --build -d
```

Migration tool reference

Use help command to show instructions of the migration tool:

docker run --rm migrate-tool help
Use test command to test mysql connection:

docker run --rm -v /data/database:/var/lib/mysql migrate-tool test

Restore database from backup file in /path/to/backup

docker run -ti --rm -v /data/database:/var/lib/mysql -v /path/to/backup:/harbor-migration/backup migrate-tool restore

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Harbor upgrade and database migration guide

Upgrading Harbor and migrating data

Migration tool reference

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