bundles/smartd: introduce, add to hosts where *we* need to keep track of disk health

bundles/smartd/metadata.py

@@ -0,0 +1,54 @@
+defaults = {
+    'apt': {
+        'packages': {
+            'smartmontools': {},
+        },
+    },
+    'icinga2_api': {
+        'smartd': {
+            'services': {
+                'SMARTD PROCESS': {
+                    'command_on_monitored_host': '/usr/local/share/icinga/plugins/check_systemd_unit smartd',
+                },
+            },
+        },
+    },
+}
+
+
+@metadata_reactor
+def zfs_disks_to_metadata(metadata):
+    disks = set()
+
+    for pool, config in metadata.get('zfs/pools', {}).items():
+        if 'device' in config:
+            disks.add(config['device'])
+        else:
+            for t in {'mirror', 'raidz', 'raidz2', 'raidz3'}:
+                for device in config.get(t, set()):
+                    disks.add(device)
+
+    return {
+        'smartd': {
+            'disks': disks,
+        },
+    }
+
+
+@metadata_reactor
+def icinga(metadata):
+    services = {}
+
+    for disk in metadata.get('smartd/disks', set()):
+        services[f'SMART STATUS {disk}'] = {
+            'command_on_monitored_host': f'sudo /usr/local/share/icinga/plugins/check_smart -d {disk} -i auto',
+            'vars.notification.mail': True,
+        }
+
+    return {
+        'icinga2_api': {
+            'smartd': {
+                'services': services,
+            },
+        },
+    }