FAQ

• General

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  How I can backup my Linux server?

  Data loss and system failure are worst-case scenarios for every user and organisation. To prevent this, define and implement a clear backup strategy, so backups once made can be set up on a VM in no time. In this guide, you will learn possible solutions for this problem.

  What if the VM is no longer reachable or the login is not possible (e.g. via SSH)?

  • Check if the VM is switched on → Switch on (Manage an existing Linux instance).
  • Check if the security groups are set correctly (Are incoming connections allowed e.g. for SSH?) (Create and manage security groups and rules).
  • Check if the service is actually running under the desired port (e.g. SSH → port 22). The check can be done via WebConsole or another way.
  • Check if the VM is accessible via WebConsole (Access your server using web console) and do the troubleshooting via How to recover access to your VM оr to do emergency troubleshooting.
  • Otherwise, restart the VM.

  What can I do if my VM cannot boot due configuration problem or something else?

  Boot your server into emergency mode and do some troubleshooting to fix the problems. Follow How to recover access to your VM оr to do emergency troubleshooting.

  What if the VMs can't communicate or the network communication from/between VMs is broken?

  Validate that the security groups are set correctly for the communicating VMs. Explicitly allow incoming connections. See Create and manage security groups and rules.

  How I can find image IDs of some Linux distribution?

  STACKIT only provides customers with the latest versions of distributions and older, still supported versions. When vendors make new major versions available, STACKIT removes out-of-date versions. Versions past their expiration date are no longer available in the user interface for the server creation process. You can use old image versions and create servers from them until the end of the extended support of this distribution, if such support is available via API and CLI. The names of the old versions are a combination of the release name and the date of the release, so customers can easily check the release notes for the particular daily build. Example: “Ubuntu 22.04 (2022-04-27)”. See: Find old versions of an image.