This guide is focused on Linux servers running Ubuntu distribution. Before proceeding with the procedure for updating your Ubuntu, it is recommended to make backups, otherwise there is a high risk of losing all data.
First stage before updating
First, update your Ubuntu
apt upgradeThen restart your server
rebootNext, do the following:
apt update && sudo apt upgrade -yAfter that, you need to remove unused packages and kernels to free up space in your /boot partition
apt --purge autoremoveThen you need to edit the update manager configuration file. This can be done as follows:
nano /etc/update-manager/release-upgradesFind the line starting with Prompt =. Make sure it is not commented out and the lts value matches the one shown:
Prompt=ltsRunning Updates
First, we recommend checking the backups again. Then run the update tool on your Ubuntu, then enter Y
do-release-upgradeThen follow the instructions that you see in your terminal and click carefully. This will be followed by the removal of packages, with which you must agree by clicking on Y
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