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changelog: add entry for db
Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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CHANGELOG.md
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CHANGELOG.md
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## Next
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### Database integrity improvements
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This release includes a significant database migration that addresses longstanding
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issues with the database schema and data integrity that has accumulated over the
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years. The migration introduces a `schema.sql` file as the source of truth for
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the expected database schema to ensure new migrations that will cause divergence
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does not occur again.
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These issues arose from a combination of factors discovered over time: SQLite
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foreign keys not being enforced for many early versions, all migrations being
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run in one large function until version 0.23.0, and inconsistent use of GORM's
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AutoMigrate feature. Moving forward, all new migrations will be explicit SQL
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operations rather than relying on GORM AutoMigrate, and foreign keys will be
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enforced throughout the migration process.
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We are only improving SQLite databases with this change - PostgreSQL databases
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are not affected.
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Please read the [PR description](https://github.com/juanfont/headscale/pull/2617)
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for more technical details about the issues and solutions.
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**SQLite Database Backup Example:**
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```bash
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# Stop headscale
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systemctl stop headscale
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# Backup sqlite database
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cp /var/lib/headscale/db.sqlite /var/lib/headscale/db.sqlite.backup
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# Backup sqlite WAL/SHM files (if they exist)
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cp /var/lib/headscale/db.sqlite-wal /var/lib/headscale/db.sqlite-wal.backup
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cp /var/lib/headscale/db.sqlite-shm /var/lib/headscale/db.sqlite-shm.backup
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# Start headscale (migration will run automatically)
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systemctl start headscale
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```
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### BREAKING
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- Policy: Zero or empty destination port is no longer allowed
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@ -9,6 +46,12 @@
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### Changes
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- **Database schema migration improvements for SQLite**
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[#2617](https://github.com/juanfont/headscale/pull/2617)
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- **IMPORTANT: Backup your SQLite database before upgrading**
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- Introduces safer table renaming migration strategy
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- Addresses longstanding database integrity issues
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- Remove policy v1 code [#2600](https://github.com/juanfont/headscale/pull/2600)
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- Refactor Debian/Ubuntu packaging and drop support for Ubuntu 20.04.
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[#2614](https://github.com/juanfont/headscale/pull/2614)
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