From fd1363eedadb183c439a00e143fd05ba8e10ad31 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@spreadspace.org>
Date: Sun, 2 May 2021 16:45:47 +0200
Subject: add timer for syncoid backups

---
 inventory/host_vars/ch-epimetheus.yml                |  3 +++
 roles/storage/zfs/syncoid/defaults/main.yml          |  3 +++
 roles/storage/zfs/syncoid/tasks/main.yml             | 20 ++++++++++++++++++++
 .../storage/zfs/syncoid/templates/systemd.service.j2 |  3 +++
 roles/storage/zfs/syncoid/templates/systemd.timer.j2 |  8 ++++++++
 spreadspace/sgg-icecast.yml                          |  2 +-
 6 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 roles/storage/zfs/syncoid/templates/systemd.timer.j2

diff --git a/inventory/host_vars/ch-epimetheus.yml b/inventory/host_vars/ch-epimetheus.yml
index 7b7bc457..6065f6c5 100644
--- a/inventory/host_vars/ch-epimetheus.yml
+++ b/inventory/host_vars/ch-epimetheus.yml
@@ -74,6 +74,9 @@ zfs_syncoid_sources:
   'ch-prometheus':
     ssh_hostname: "{{ network_zones.lan.prefix | ipaddr(network_zones.lan.offsets['ch-prometheus']) | ipaddr('address') }}"
     ssh_port: "{{ hostvars['ch-prometheus'].ansible_port }}"
+    periodic:
+      schedule: "*-*-* 00,06,12,18:30:00"
+      timeout: 5h
     paths:
       nvme/vm:
         recursive: yes
diff --git a/roles/storage/zfs/syncoid/defaults/main.yml b/roles/storage/zfs/syncoid/defaults/main.yml
index cdc58750..6e874daf 100644
--- a/roles/storage/zfs/syncoid/defaults/main.yml
+++ b/roles/storage/zfs/syncoid/defaults/main.yml
@@ -5,6 +5,9 @@
 #   somehost:
 #     ssh_hostname: 192.0.2.0
 #     ssh_port: 222
+#     periodic:  # optional
+#       schedule: "*-*-* 01,13:30:00"
+#       timeout: 8h
 #     paths:
 #       nvme/vm:
 #         recursive: yes
diff --git a/roles/storage/zfs/syncoid/tasks/main.yml b/roles/storage/zfs/syncoid/tasks/main.yml
index 53aa434a..a01900b1 100644
--- a/roles/storage/zfs/syncoid/tasks/main.yml
+++ b/roles/storage/zfs/syncoid/tasks/main.yml
@@ -45,3 +45,23 @@
   template:
     src: systemd.service.j2
     dest: "/etc/systemd/system/syncoid-{{ item.key }}.service"
+
+- name: create systemd timer units for periodic backups
+  loop: "{{ zfs_syncoid_sources | dict2items }}"
+  loop_control:
+    label: "{{ item.key }}"
+  when: "'periodic' in item.value"
+  template:
+    src: systemd.timer.j2
+    dest: "/etc/systemd/system/syncoid-{{ item.key }}.timer"
+
+- name: make sure systemd timer units for periodic backups are enabled and started
+  loop: "{{ zfs_syncoid_sources | dict2items }}"
+  loop_control:
+    label: "{{ item.key }}"
+  when: "'periodic' in item.value"
+  systemd:
+    daemon_reload: yes
+    name: "syncoid-{{ item.key }}.timer"
+    state: started
+    enabled: yes
diff --git a/roles/storage/zfs/syncoid/templates/systemd.service.j2 b/roles/storage/zfs/syncoid/templates/systemd.service.j2
index ada34336..0d214595 100644
--- a/roles/storage/zfs/syncoid/templates/systemd.service.j2
+++ b/roles/storage/zfs/syncoid/templates/systemd.service.j2
@@ -6,6 +6,9 @@ Type=oneshot
 {% for path,config in item.value.paths.items() %}
 ExecStart=/var/lib/syncoid/syncoid_wrapper --dumpsnaps --quiet {{ config.recursive | default(false) | ternary('-r ', '') }}{{ config.skip_parent | default(false) | ternary('--skip-parent ', '') }}{% for re in config.exclude | default([]) %}--exclude='{{ re }}' {% endfor %}{% if 'ssh_port' in item.value %}--sshport {{ item.value.ssh_port }} {% endif %}root@{{ item.value.ssh_hostname }}:{{ path }} {{ zfs_syncoid_target_pool }}/{{ item.key }}/{{ path }}
 {% endfor %}
+{% if 'periodic' in item.value %}
+TimeoutStartSec={{ item.value.periodic.timeout }}
+{% endif %}
 PrivateTmp=yes
 ProtectHome=yes
 ProtectKernelTunables=yes
diff --git a/roles/storage/zfs/syncoid/templates/systemd.timer.j2 b/roles/storage/zfs/syncoid/templates/systemd.timer.j2
new file mode 100644
index 00000000..260a8938
--- /dev/null
+++ b/roles/storage/zfs/syncoid/templates/systemd.timer.j2
@@ -0,0 +1,8 @@
+[Unit]
+Description=syncoid-based backup for {{ item.key }}
+
+[Timer]
+OnCalendar={{ item.value.periodic.schedule }}
+
+[Install]
+WantedBy=timers.target
diff --git a/spreadspace/sgg-icecast.yml b/spreadspace/sgg-icecast.yml
index 7e475b72..9594da27 100644
--- a/spreadspace/sgg-icecast.yml
+++ b/spreadspace/sgg-icecast.yml
@@ -117,7 +117,7 @@
     copy:
       content: |
         [Unit]
-        Description=whawty-auth store sync timer
+        Description=Schlagergarten Stream Stats Collector
 
         [Timer]
         OnCalendar=minutely
-- 
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