From 68a40fef1b2c87d3f612a9b8b5fd1406650842f9 Mon Sep 17 00:00:00 2001
From: uumas <gitcommit@uumas.fi>
Date: Wed, 11 Mar 2026 22:15:34 +0200
Subject: [PATCH] Add systemd role for restarting multiple services in same
 transaction

---
 roles/systemd/README.md          |  9 +++++++++
 roles/systemd/defaults/main.yaml |  2 ++
 roles/systemd/handlers/main.yaml | 14 ++++++++++++++
 3 files changed, 25 insertions(+)
 create mode 100644 roles/systemd/README.md
 create mode 100644 roles/systemd/defaults/main.yaml
 create mode 100644 roles/systemd/handlers/main.yaml

diff --git a/roles/systemd/README.md b/roles/systemd/README.md
new file mode 100644
index 0000000..c6a933b
--- /dev/null
+++ b/roles/systemd/README.md
@@ -0,0 +1,9 @@
+Adds systemd-related notifiable handlers
+
+- Reload systemd daemon
+  - Reloads all systemd unit files
+- Apply systemd unit restarts
+  - Restarts multiple systemd units in a single transaction
+  - Units to be restarted are defined in the `systemd_restart_units` variable of type list
+  - The variable should be set using `ansible.builtin.set_fact`
+  - The list must not be overridden, but appended (`systemd_restart_units: "{{ systemd_restart_units + ['restartme.service'] }}"`
diff --git a/roles/systemd/defaults/main.yaml b/roles/systemd/defaults/main.yaml
new file mode 100644
index 0000000..8e6e62a
--- /dev/null
+++ b/roles/systemd/defaults/main.yaml
@@ -0,0 +1,2 @@
+---
+systemd_restart_units: []
diff --git a/roles/systemd/handlers/main.yaml b/roles/systemd/handlers/main.yaml
new file mode 100644
index 0000000..de1ff34
--- /dev/null
+++ b/roles/systemd/handlers/main.yaml
@@ -0,0 +1,14 @@
+---
+- name: Reload systemd daemon
+  ansible.builtin.systemd_service:
+    daemon_reload: true
+
+- name: Apply systemd unit restarts # noqa: command-instead-of-module
+  ansible.builtin.command:
+    cmd: systemctl restart {{ systemd_restart_units | join(' ') }}
+  changed_when: true
+
+- name: Reset systemd restart units
+  listen: Apply systemd units restart
+  ansible.builtin.set_fact:
+    systemd_restart_units: []