bundles/backup-{client,server}: introduce

bundles/backup-server/items.py

@@ -0,0 +1,28 @@
+assert node.has_bundle('zfs')
+
+from os.path import join
+
+for nodename, config in node.metadata.get('backup-server', {}).get('clients', {}).items():
+    with open(join(repo.path, 'data', 'backup', 'keys', f'{nodename}.pub'), 'r') as f:
+        pubkey = f.read().strip()
+
+    users[config['user']] = {
+        'home': f'/srv/backups/{nodename}',
+    }
+
+    files[f'/srv/backups/{nodename}/.ssh/authorized_keys'] = {
+        'content': pubkey,
+        'owner': config['user'],
+        'mode': '0400',
+        'needs': {
+            'bundle:zfs',
+        },
+    }
+
+    directories[f'/srv/backups/{nodename}/backups'] = {
+        'owner': config['user'],
+        'mode': '0700',
+        'needs': {
+            'bundle:zfs',
+        },
+    }

bundles/backup-server/metadata.py

@@ -0,0 +1,45 @@
+@metadata_reactor
+def get_my_clients(metadata):
+    my_clients = {}
+
+    for rnode in repo.nodes:
+        if rnode.metadata.get('backups/exclude_from_backups', False):
+            continue
+
+        my_clients[rnode.name] = {
+            'user': rnode.metadata.get('backup-client/user-name'),
+        }
+
+    return {
+        'backup-server': {
+            'clients': my_clients,
+        },
+    }
+
+
+@metadata_reactor
+def zfs(metadata):
+    zfs_datasets = {}
+    zfs_retains = {}
+    retain_defaults = {
+        'weekly': 4,
+        'monthly': 6,
+    }
+
+    for client in metadata.get('backup-server/clients', {}).keys():
+        dataset = '{}/{}'.format(metadata.get('backup-server/zfs-base'), client)
+
+        zfs_datasets[dataset] = {
+            'mountpoint': '/srv/backups/{}'.format(client),
+        }
+
+        zfs_retains[dataset] = retain_defaults.copy()
+
+    return {
+        'zfs': {
+            'datasets': zfs_datasets,
+            'snapshots': {
+                'retain_per_dataset': zfs_retains,
+            },
+        },
+    }