![]() ![]() GRUB is not needed in your disk MBR because your Linode boots from a GRUB installation provided by Linode’s host servers.ĭuring the upgrade process, you’ll be prompted to review configuration files which you’ve modified to decide whether to keep or replace them with the upstream default file. Further prompts about installing GRUB should be answered with installing to /dev/sda, then Continue without installing GRUB. The example of upgrading from Debian 8 (Jessie) to Debian 9 (Stretch) is used below, so jessie is changed to stretch (or, alternatively from jessie to stable).Ĭhoose Keep the local version currently installed. View all currently running services: sudo systemctl list-units -state=runningĮdit your sources.list file to change all instances of the current codename to the new release codename. You can view all enabled services with: sudo systemctl list-unit-files -state=enabled To stop a service, enter the following command, replacing mariadb with the name of the service you want to stop: sudo systemctl stop mariadb This would be to ensure a graceful shutdown of the service to prevent data loss or system locks from causing problems. You may want to stop services which are non-essential to the system but important to your setup, such as a database service. If you’ve set APT to pin any packages to a specific Debian version other than stable, You’ll need to disable APT pinning for those packages if you want them upgraded to those offered in the newest release. Install all available updates for your current Debian system: sudo apt update & sudo apt upgrade Lish will give you continuous access to your Linode whereas SSH could disconnect during the upgrade. We recommend you use the distribution-supplied kernel unless you have a specific reason not to.Įxit the SSH session if you’re currently logged in to one and instead open a Lish session to your Linode. ![]() Verify that you are booting with Debian’s kernel using the GRUB 2 boot setting in the Linode Cloud Manager. See our backup guides for more information. You may also want to back up your configuration files (usually located in /etc/) in case they have changed in later versions of the software you are using. This is the safest option and you can still manually upgrade to a newer Debian codename or release status name at any time. On the other hand, if you’re currently tracking repositories by codename, as Debian does by default, you will never upgrade beyond that codename release. For example, if you’re tracking the stable release of Debian 8 and it reaches its end of life, your system will make available a number of new packages which will upgrade you to Debian 9. When exclusively tracking the stable releases with APT, your system will upgrade whenever the stable release reaches its end of life. Linode offers Debian’s stable and oldstable releases. Debian stable releases are eventually managed by the Debian Long Term Support (LTS) team for a total lifespan of about 5 years. For example, Debian 9 Stretch is the stable release at the time of this writing the status of Debian 8 (Jessie) is oldstable. Debian repositories can be tracked either by codename (Wheezy, Jessie, etc.), or by status name (stable, testing, etc.). ![]()
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