# Internals

```{toctree}
:titlesonly:

/environment
/reference/uefi_variables
/daemon-behavior
/syscall-interception
User namespace setup </userns-idmap>
OVN implementation </reference/ovn-internals>
VM live migration implementation </reference/vm_live_migration_internals>
Dqlite </reference/dqlite-internals>
```

## Related topics

How-to guides:

- {ref}`troubleshoot`
