# LXD > This is the documentation for LXD, a system container and virtual machine manager. 2014-2026 AGPL-3.0, LXD contributors ## Pages in this subsection - [How to recover a cluster](https://canonical.com/lxd/docs/default/howto/cluster_recover/index.html.md): It might happen that one or several members of your cluster go offline or become unreachable. ## Optional - [Top-level llms.txt](https://canonical.com/lxd/docs/default/llms.txt): Complete documentation index.