qubes-doc/QubesService.md

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2014-05-11 12:22:41 -04:00
---
layout: wiki
title: QubesService
permalink: /wiki/QubesService/
---
Usage documentation is on [qvm-service manual page](/wiki/Dom0Tools/QvmService). There are also described predefined services.
Under the hood enabled service in VM is signaled by file in /var/run/qubes-service. This can be used to implement almost enable/disable **per-VM** switch controlled by dom0. Adding support for systemd services is pretty simple:
1. Disable old service: `systemctl disable <service name>`
2. Create `/etc/systemd/system/<service name>.service` file containing:
``` {.wiki}
.include /lib/systemd/system/<service name>.service
[Unit]
ConditionPathExists=/var/run/qubes-service/<service name>
```
3. Enable new service: `systemctl enable <service name>`.
This will cause service to be started only when you enable it with qvm-service for given VM.