bundles/grafana: introduce, add to htz-cloud.influxdb

bundles/grafana/items.py

@@ -0,0 +1,99 @@
+from itertools import count
+from os.path import join
+from pathlib import Path
+from uuid import UUID
+
+from bundlewrap.metadata import metadata_to_json
+
+for row in Path(join(repo.path, 'bundles', 'grafana', 'dashboard-rows')).rglob("*.py"):
+    with open(row, 'r') as f:
+        exec(f.read())
+
+directories = {
+    '/etc/grafana/provisioning/dashboards': {
+        'purge': True,
+    },
+    '/etc/grafana/provisioning/datasources': {
+        'purge': True,
+    },
+    '/etc/grafana/provisioning/notifiers': {
+        'purge': True,
+    },
+    '/etc/grafana/provisioning/plugins': {
+        'purge': True,
+    },
+    '/var/lib/grafana/dashboards': {
+        'purge': True,
+        'triggers': {
+            'svc_systemd:grafana-server:restart',
+        },
+    },
+}
+
+files = {
+    '/etc/grafana/grafana.ini': {
+        'content_type': 'mako',
+        'context': node.metadata['grafana'],
+        'owner': 'grafana',
+        'mode': '0640',
+        'triggers': {
+            'svc_systemd:grafana-server:restart',
+        },
+    },
+    '/etc/grafana/provisioning/dashboards/bundlewrap.yaml': {
+        'source': 'dashboards.yaml',
+        'owner': 'grafana',
+        'mode': '0640',
+        'triggers': {
+            'svc_systemd:grafana-server:restart',
+        },
+    },
+}
+
+svc_systemd = {
+    'grafana-server': {
+        'needs': {
+            'file:/etc/grafana/grafana.ini',
+            'pkg_apt:grafana',
+        },
+    },
+}
+
+### dashboard management starts here
+for rnode in repo.nodes:
+    if not rnode.has_bundle('telegraf'):
+        continue
+
+    panel_id = count(start=1)
+    dashboard = {
+        'title': rnode.name,
+        'uid': UUID(int=rnode.magic_number).hex[:10],
+
+        'editable': False,
+        'graphTooltip': 1,
+        'refresh': '30s',
+        'schemaVersion': 12,
+        'style': 'dark',
+        'tags': {'bw'},
+        'time': {
+            'from': 'now-1d',
+            'to': 'now'
+        },
+        'version': 1,
+
+        'rows': [
+            dashboard_row_cpu(panel_id, rnode),
+            dashboard_row_ip_traffic(panel_id, rnode),
+            dashboard_row_memory(panel_id, rnode),
+            dashboard_row_disk_space(panel_id, rnode),
+            dashboard_row_disk_iops(panel_id, rnode),
+        ],
+    }
+
+    files[f'/var/lib/grafana/dashboards/{rnode.name}.json'] = {
+        # use metadata_to_json, because this supports sets
+        'content': metadata_to_json(dashboard),
+        'triggers': {
+            'svc_systemd:grafana-server:restart',
+        },
+    }