From 184c836a16e9954a2cba11ae21f07923077ec904 Mon Sep 17 00:00:00 2001 From: James Falcon Date: Mon, 19 Jul 2021 14:13:21 -0500 Subject: Initial hotplug support (#936) Adds a udev script which will invoke a hotplug hook script on all net add events. The script will write some udev arguments to a systemd FIFO socket (to ensure we have only instance of cloud-init running at a time), which is then read by a new service that calls a new 'cloud-init devel hotplug-hook' command to handle the new event. This hotplug-hook command will: - Fetch the pickled datsource - Verify that the hotplug event is supported/enabled - Update the metadata for the datasource - Ensure the hotplugged device exists within the datasource - Apply the config change on the datasource metadata - Bring up the new interface (or apply global network configuration) - Save the updated metadata back to the pickle cache Also scattered in some unrelated typing where helpful --- systemd/cloud-init-hotplugd.socket | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 systemd/cloud-init-hotplugd.socket (limited to 'systemd/cloud-init-hotplugd.socket') diff --git a/systemd/cloud-init-hotplugd.socket b/systemd/cloud-init-hotplugd.socket new file mode 100644 index 00000000..aa093016 --- /dev/null +++ b/systemd/cloud-init-hotplugd.socket @@ -0,0 +1,13 @@ +# cloud-init-hotplugd.socket listens on the FIFO file +# /run/cloud-init/hook-hotplug-cmd which is created during a udev network +# add or remove event as processed by 10-cloud-init-hook-hotplug.rules. + +# Known bug with an enforcing SELinux policy: LP: #1936229 +[Unit] +Description=cloud-init hotplug hook socket + +[Socket] +ListenFIFO=/run/cloud-init/hook-hotplug-cmd + +[Install] +WantedBy=cloud-init.target -- cgit v1.2.3