git: 2775b9b0bcc2 - main - nuageinit: add support for OpenStack network config

The branch main has been updated by bapt:

URL: https://cgit.FreeBSD.org/src/commit/?id=2775b9b0bcc278dd4183b57784953c26a3fcdc89

commit 2775b9b0bcc278dd4183b57784953c26a3fcdc89
Author:     Baptiste Daroussin <bapt@FreeBSD.org>
AuthorDate: 2024-10-29 13:17:39 +0000
Commit:     Baptiste Daroussin <bapt@FreeBSD.org>
CommitDate: 2024-10-29 13:23:47 +0000

    nuageinit: add support for OpenStack network config
    
    Add naive support for openstack network config.
    if no config driver have been found, try to detect that we are running a
    VM on openstack via the smbios information, use the first iface
    available and temporary activate dhcp on it, to be able to fetch the
    necessary informations for cloudinit.
    
    While here make the rc script execute after devmatch, some ethernet
    device might be attached via devmatch and may be needed for cloudinit.
    
    Tested on OVHCloud Public Cloud.
    
    MFC after:      3 weeks
    Sponsored by:   OVHCloud
---
 libexec/rc/rc.d/nuageinit | 45 +++++++++++++++++++++++++++++++++++++--------
 1 file changed, 37 insertions(+), 8 deletions(-)

diff --git a/libexec/rc/rc.d/nuageinit b/libexec/rc/rc.d/nuageinit
index a44761ea1d9e..54e5b1fbec07 100755
--- a/libexec/rc/rc.d/nuageinit
+++ b/libexec/rc/rc.d/nuageinit
@@ -2,7 +2,7 @@
 #
 
 # PROVIDE: nuageinit
-# REQUIRE: mountcritlocal zfs
+# REQUIRE: mountcritlocal zfs devmatch
 # BEFORE: NETWORKING
 # KEYWORD: firstboot
 
@@ -14,6 +14,18 @@ start_cmd="nuageinit_start"
 stop_cmd=":"
 rcvar="nuageinit_enable"
 
+fetch_openstack()
+{
+	cd /media/nuageinit/openstack/latest
+	for file in meta_data.json network_data.json user_data; do
+		fetch http://169.254.169.254/openstack/latest/$file || :
+	done
+	if [ -f user_data ]; then
+		chmod 755 user_data
+	fi
+	cd -
+}
+
 nuageinit_start()
 {
 	local citype
@@ -34,13 +46,28 @@ nuageinit_start()
 		fi
 		unset drive
 	done
-	if [ -z "$drive" ]; then
-		# try to detect networked based instance
-		err 1 "Impossible to find a cloud init provider"
+	if [ -n "$drive" ]; then
+		mkdir -p /media/nuageinit
+		fs=$(fstyp $drive 2> /dev/null)
+		mount -t $fs $drive /media/nuageinit
+	else
+		product=$(kenv smbios.system.product)
+		case "$product" in
+		OpenStack*)
+			mkdir -p /media/nuageinit/openstack/latest
+			ifaces=$(ifconfig -l ether)
+			set -- $ifaces
+			dhclient -p /tmp/ephemeraldhcp.pid $1
+			fetch_openstack
+			pkill -F /tmp/ephemeraldhcp.pid
+			citype=config-2
+			;;
+		*)
+			# try to detect networked based instance
+			err 1 "Impossible to find a cloud init provider"
+			;;
+		esac
 	fi
-	mkdir -p /media/nuageinit
-	fs=$(fstyp $drive 2> /dev/null)
-	mount -t $fs $drive /media/nuageinit
 	# according to the specification, the content is either
 	# in the openstack or ec2 directory
 	case "$citype" in
@@ -59,8 +86,10 @@ nuageinit_start()
 	esac
 	if [ -n "$drive" ]; then
 		umount /media/nuageinit
+		rmdir /media/nuageinit
+	else
+		rm -rf /media/nuageinit
 	fi
-	rmdir /media/nuageinit
 }
 
 load_rc_config $name