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docs: add notes on patching operating systems for security

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Refs #1089
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Jose Diaz-Gonzalez
2018-01-13 19:26:49 -05:00
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docs/getting-started/upgrading.md
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If your version of Dokku is pre 0.3.0 (check with `dokku version`), we recommend [a fresh install](/docs/getting-started/installation.md) on a new server.
## Security Updates
For any security related updates, please follow our [twitter account](https://twitter.com/savant). As Dokku does not run any daemons, the security risk introduced by our software is minimal.
Your operating system may occasionally provide security updates. We recommend setting unattended upgrades for your operating system. Here are some helpful links:
- [Arch Linux System Maintenance](https://wiki.archlinux.org/index.php/System_maintenance)
- [Centos Automatic Security Updates](https://serversforhackers.com/c/automatic-security-updates-centos)
- [Debian Unattended Upgrades](https://wiki.debian.org/UnattendedUpgrades)
- [Ubuntu Unattended Upgrades](https://help.ubuntu.com/community/AutomaticSecurityUpdates)
Finally, Docker releases updates periodically to their engine. We recommend reading their release notes and upgrading accordingly. Please see the [Docker documentation](https://docs.docker.com/) for more details.
## Migration Guides
Before upgrading, check the migration guides to get comfortable with new features and prepare your deployment to be upgraded.