Libvirt: Difference between revisions

Line 275:

And finally you can access the VMs GUI through <code>https://mydomain.tld:4500/spice/index.html?host=mydomain.tld&port=5959</code>

==== Hooks ====

Libvirt allows the use of hooks to run custom scripts during specific events, such as daemon lifecycle events, domain lifecycle events, and network events. On NixOS, you can configure hooks via the NixOS module to automate the placement of hook scripts in the appropriate directories.

The following directories are used for placing hook scripts:

* '''<code>/var/lib/libvirt/hooks/daemon.d/</code>''' Scripts here are triggered by daemon events like start, shutdown, and SIGHUP.

* '''<code>/var/lib/libvirt/hooks/qemu.d/</code>''' Scripts for handling QEMU domain events such as begin, end, and migration.

* '''<code>/var/lib/libvirt/hooks/lxc.d/</code>''' Scripts for LXC container events like begin and end.

* '''<code>/var/lib/libvirt/hooks/libxl.d/</code>''' Scripts for Xen domains managed by <code>libxl</code> (begin/end events).

* '''<code>/var/lib/libvirt/hooks/network.d/</code>''' Scripts triggered by network events such as begin and end.

See the [https://libvirt.org/hooks.html libvirt documentation] for more information.

An example config would be:<syntaxhighlight lang="nix">

{

virtualisation.libvirtd.hooks = {

daemon = {

"example" = ./scripts/daemon-example.sh;

};

qemu = {

"example" = ./scripts/qemu-example.sh;

};

network = {

"example" = ./scripts/network-example.sh;

};

}

</syntaxhighlight>

[[Category:Virtualization]]

[[Category:Applications]]

@@ Line 275: / Line 275: @@
 And finally you can access the VMs GUI through <code>https://mydomain.tld:4500/spice/index.html?host=mydomain.tld&port=5959</code>
+==== Hooks ====
+Libvirt allows the use of hooks to run custom scripts during specific events, such as daemon lifecycle events, domain lifecycle events, and network events. On NixOS, you can configure hooks via the NixOS module to automate the placement of hook scripts in the appropriate directories.
+The following directories are used for placing hook scripts:
+* '''<code>/var/lib/libvirt/hooks/daemon.d/</code>'''  Scripts here are triggered by daemon events like start, shutdown, and SIGHUP.
+* '''<code>/var/lib/libvirt/hooks/qemu.d/</code>'''  Scripts for handling QEMU domain events such as begin, end, and migration.
+* '''<code>/var/lib/libvirt/hooks/lxc.d/</code>'''  Scripts for LXC container events like begin and end.
+* '''<code>/var/lib/libvirt/hooks/libxl.d/</code>'''  Scripts for Xen domains managed by <code>libxl</code> (begin/end events).
+* '''<code>/var/lib/libvirt/hooks/network.d/</code>'''  Scripts triggered by network events such as begin and end.
+See the [https://libvirt.org/hooks.html libvirt documentation] for more information.
+An example config would be:<syntaxhighlight lang="nix">
+{
+  virtualisation.libvirtd.hooks = {
+    daemon = {
+      "example" = ./scripts/daemon-example.sh;
+    };
+    qemu = {
+      "example" = ./scripts/qemu-example.sh;
+    };
+    network = {
+      "example" = ./scripts/network-example.sh;
+    };
+  };
+}
+</syntaxhighlight>
 [[Category:Virtualization]]
 [[Category:Applications]]