From cfbb38d570a668de342fead1ff8aff7c275a2636 Mon Sep 17 00:00:00 2001
From: Christian Goll <cgoll@suse.de>
Date: Tue, 15 Aug 2023 17:31:15 -0600
Subject: [PATCH] Use ignition as a systemd service

simple init.d ignition fails as systemd is needed to set up drivers,
etc.

Signed-off-by: Christian Goll <cgoll@suse.de>
---
 .../systemd/system/ignition-ww4-disks.service | 32 +++++++++++++++++++
 .../systemd/system/ignition-ww4-mount.service | 16 ++++++++++
 .../ignition-ww4-disks.service                |  1 +
 .../ignition-ww4-mount.service                |  1 +
 overlays/wwinit/warewulf/ignition.json.ww     |  1 +
 5 files changed, 51 insertions(+)
 create mode 100644 overlays/wwinit/etc/systemd/system/ignition-ww4-disks.service
 create mode 100644 overlays/wwinit/etc/systemd/system/ignition-ww4-mount.service
 create mode 120000 overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-disks.service
 create mode 120000 overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-mount.service
 create mode 100644 overlays/wwinit/warewulf/ignition.json.ww

diff --git a/overlays/wwinit/etc/systemd/system/ignition-ww4-disks.service b/overlays/wwinit/etc/systemd/system/ignition-ww4-disks.service
new file mode 100644
index 00000000..ce377b79
--- /dev/null
+++ b/overlays/wwinit/etc/systemd/system/ignition-ww4-disks.service
@@ -0,0 +1,32 @@
+[Unit]
+Description=Ignition warewulf (disks)
+Documentation=https://hpcng.github.io/warewulf
+ConditionPathExists=/warewulf/ignition.json
+ConditionPathExists=/usr/lib/dracut/modules.d/30ignition/ignition
+DefaultDependencies=false
+
+Before=ignition-ww4-mount.service
+
+# This stage runs between `basic.target` and `initrd-root-device.target`,
+# see https://www.freedesktop.org/software/systemd/man/bootup.html
+# Make sure to run before the file system checks, as sgdisk will trigger
+# udev events, potentially resulting in race conditions due to disappearing
+# devices.
+
+# Note that CL runs this before `local-fs-pre.target` to allow for configs that
+# completely wipe the rootfs. Though we're not there yet. But we still run
+# before `sysroot.mount` on principle.
+Before=initrd-root-device.target
+Before=sysroot.mount
+
+#OnFailure=emergency.target
+#OnFailureJobMode=isolate
+
+# This stage requires udevd to detect disk partitioning changes.
+Requires=systemd-udevd.service
+After=systemd-udevd.service
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/lib/dracut/modules.d/30ignition/ignition --platform=metal --stage=disks --config-cache /warewulf/ignition.json
diff --git a/overlays/wwinit/etc/systemd/system/ignition-ww4-mount.service b/overlays/wwinit/etc/systemd/system/ignition-ww4-mount.service
new file mode 100644
index 00000000..35986da7
--- /dev/null
+++ b/overlays/wwinit/etc/systemd/system/ignition-ww4-mount.service
@@ -0,0 +1,16 @@
+[Unit]
+Description=Ignition warewulf (mount)
+Documentation=https://hpcng.github.io/warewulf
+ConditionPathExists=/warewulf/ignition.json
+ConditionPathExists=/usr/lib/dracut/modules.d/30ignition/ignition
+DefaultDependencies=false
+Before=ignition-complete.target
+
+After=ignition-ww4-disks.service
+
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/lib/dracut/modules.d/30ignition/ignition --platform=metal --stage=mount --config-cache /warewulf/ignition.json
+ExecStop=/usr/lib/dracut/modules.d/30ignition/ignition --platform=metal --stage=umount --config-cache /warewulf/ignition.json
diff --git a/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-disks.service b/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-disks.service
new file mode 120000
index 00000000..726d662c
--- /dev/null
+++ b/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-disks.service
@@ -0,0 +1 @@
+/etc/systemd/system/ignition-ww4-disks.service
\ No newline at end of file
diff --git a/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-mount.service b/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-mount.service
new file mode 120000
index 00000000..112c95c9
--- /dev/null
+++ b/overlays/wwinit/etc/systemd/system/multi-user.target.wants/ignition-ww4-mount.service
@@ -0,0 +1 @@
+/etc/systemd/system/ignition-ww4-mount.service
\ No newline at end of file
diff --git a/overlays/wwinit/warewulf/ignition.json.ww b/overlays/wwinit/warewulf/ignition.json.ww
new file mode 100644
index 00000000..7b800e85
--- /dev/null
+++ b/overlays/wwinit/warewulf/ignition.json.ww
@@ -0,0 +1 @@
+{{ IgnitionJson }}