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 --- udev/10-cloud-init-hook-hotplug.rules | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 udev/10-cloud-init-hook-hotplug.rules (limited to 'udev') diff --git a/udev/10-cloud-init-hook-hotplug.rules b/udev/10-cloud-init-hook-hotplug.rules new file mode 100644 index 00000000..2e382679 --- /dev/null +++ b/udev/10-cloud-init-hook-hotplug.rules @@ -0,0 +1,6 @@ +# This file is part of cloud-init. See LICENSE file for license information. +# Handle device adds only +ACTION!="add|remove", GOTO="cloudinit_end" +LABEL="cloudinit_hook" +SUBSYSTEM=="net|block", RUN+="/usr/lib/cloud-init/hook-hotplug" +LABEL="cloudinit_end" -- cgit v1.2.3