This README file provides step-by-step instructions for upgrading from Ubuntu 18.04 LTS to Ubuntu 22.04 LTS. Follow the steps below to safely and successfully upgrade your system:
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Backup: Back up important data and configurations.
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Pre-Upgrade Checklist: Check system readiness and requirements.
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Prepare TCP Port 1022: Prepare a secondary SSH port.
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Upgrade the System: Upgrade the system using the
sudo do-release-upgrade
command. -
Restart the System: Restart the system after the upgrade process is completed.
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Remove Firewall Rule: Remove the firewall rule for port 1022.
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References: