From c81b498df13c294045cfe1f4e24f39148b130923 Mon Sep 17 00:00:00 2001
From: Ilker Manap <ilker@Ilkers-MacBook-Pro.local>
Date: Tue, 27 Oct 2026 02:12:08 +0100
Subject: [PATCH] compute image: dbus for slurmd's systemd scope; controller
 slurm.conf sync timer

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
---
 deploy/install.sh                       |  5 +++++
 deploy/rollcall-controller-sync.service | 12 ++++++++++++
 deploy/rollcall-controller-sync.timer   |  9 +++++++++
 images/compute-debian13/packages.list   |  1 +
 4 files changed, 27 insertions(+)
 create mode 100644 deploy/rollcall-controller-sync.service
 create mode 100644 deploy/rollcall-controller-sync.timer

diff --git a/deploy/install.sh b/deploy/install.sh
index 29f39fd..06561b3 100644
--- a/deploy/install.sh
+++ b/deploy/install.sh
@@ -31,8 +31,13 @@ chgrp -R rollcall /etc/rollcall/overlays
 install -d -m 0755 /var/lib/rollcall
 install -d -m 0755 -o rollcall -g rollcall /var/lib/rollcall/dnsmasq
 install -m 0644 rollcall-dnsmasq.path rollcall-dnsmasq.service /etc/systemd/system/
+# optional: this host is also the Slurm controller -> keep its slurm.conf rendered from the profile
+install -m 0644 rollcall-controller-sync.service rollcall-controller-sync.timer /etc/systemd/system/
 systemctl daemon-reload
 systemctl enable --now rollcall-dnsmasq.path >/dev/null 2>&1 || true
+if systemctl list-unit-files slurmctld.service >/dev/null 2>&1 && [ -d /etc/slurm ]; then
+  systemctl enable --now rollcall-controller-sync.timer >/dev/null 2>&1 || true
+fi
 systemctl enable --now rollcall.service
 systemctl restart rollcall.service
 sleep 1
diff --git a/deploy/rollcall-controller-sync.service b/deploy/rollcall-controller-sync.service
new file mode 100644
index 0000000..94eb4b4
--- /dev/null
+++ b/deploy/rollcall-controller-sync.service
@@ -0,0 +1,12 @@
+[Unit]
+Description=rollcall: keep the local Slurm controller's slurm.conf in sync with the rendered profile
+After=rollcall.service
+
+[Service]
+Type=oneshot
+# PROFILE is the profile whose overlay carries slurm.conf
+Environment=PROFILE=compute
+ExecStart=/bin/sh -c 'set -e; new=$(/usr/local/bin/rollcall render "$PROFILE" etc/slurm/slurm.conf) || exit 0; \
+  if ! printf "%%s\n" "$new" | grep -v "^# rendered by rollcall" | cmp -s - <(grep -v "^# rendered by rollcall" /etc/slurm/slurm.conf 2>/dev/null); then \
+    printf "%%s\n" "$new" > /etc/slurm/slurm.conf.new && mv /etc/slurm/slurm.conf.new /etc/slurm/slurm.conf; \
+    systemctl try-restart slurmctld.service; echo "slurm.conf updated"; fi'
diff --git a/deploy/rollcall-controller-sync.timer b/deploy/rollcall-controller-sync.timer
new file mode 100644
index 0000000..54c24c7
--- /dev/null
+++ b/deploy/rollcall-controller-sync.timer
@@ -0,0 +1,9 @@
+[Unit]
+Description=rollcall: controller slurm.conf sync every minute
+
+[Timer]
+OnBootSec=1min
+OnUnitActiveSec=1min
+
+[Install]
+WantedBy=timers.target
diff --git a/images/compute-debian13/packages.list b/images/compute-debian13/packages.list
index 362369a..6a2d565 100644
--- a/images/compute-debian13/packages.list
+++ b/images/compute-debian13/packages.list
@@ -33,3 +33,4 @@ firmware-qlogic
 firmware-realtek
 amd64-microcode
 intel-microcode
+dbus