[ANSIBLE] Configure custom Grafana dashboard

A new dashboard provider is set up in Grafana which reads
the dash json definition from the file uploaded to Grafana PV

Change-Id: I2704fe85e838e9aba2a846172334af467b9f2045
Issue-ID: INT-1926
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>

4 files changed, 346 insertions, 1 deletions

diff --git a/ansible/roles/kube-prometheus-stack/defaults/main.yml b/ansible/roles/kube-prometheus-stack/defaults/main.yml
index d6b49d47..74d6564a 100644
--- a/ansible/roles/kube-prometheus-stack/defaults/main.yml
+++ b/ansible/roles/kube-prometheus-stack/defaults/main.yml
@@ -7,6 +7,19 @@ kube_prometheus_stack:
   helm_values:
     grafana:
       adminPassword: admin
+      dashboardProviders:
+        dashboardproviders.yaml:
+          apiVersion: 1
+          providers:
+            - name: 'custom'
+              orgId: 1
+              folder: 'Custom'
+              type: file
+              disableDeletion: false
+              editable: true
+              updateIntervalSeconds: 60
+              options:
+                path: /var/lib/grafana/dashboards/custom
       persistence:
         type: pvc
         enabled: true
@@ -26,4 +39,3 @@ kube_prometheus_stack:
               resources:
                 requests:
                   storage: 6Gi
-            selector: {}
diff --git a/ansible/roles/kube-prometheus-stack/files/grafana_dashboard.json b/ansible/roles/kube-prometheus-stack/files/grafana_dashboard.json
new file mode 100644
index 00000000..1912dd82
--- /dev/null
+++ b/ansible/roles/kube-prometheus-stack/files/grafana_dashboard.json
@@ -0,0 +1,327 @@
+{
+  "annotations": {
+    "list": [
+      {
+        "builtIn": 1,
+        "datasource": "-- Grafana --",
+        "enable": true,
+        "hide": true,
+        "iconColor": "rgba(0, 211, 255, 1)",
+        "name": "Annotations & Alerts",
+        "type": "dashboard"
+      }
+    ]
+  },
+  "editable": true,
+  "gnetId": null,
+  "graphTooltip": 0,
+  "id": 26,
+  "links": [],
+  "panels": [
+    {
+      "alert": {
+        "alertRuleTags": {},
+        "conditions": [
+          {
+            "evaluator": {
+              "params": [
+                24000
+              ],
+              "type": "gt"
+            },
+            "operator": {
+              "type": "and"
+            },
+            "query": {
+              "params": [
+                "A",
+                "5m",
+                "now"
+              ]
+            },
+            "reducer": {
+              "params": [],
+              "type": "last"
+            },
+            "type": "query"
+          }
+        ],
+        "executionErrorState": "alerting",
+        "for": "5m",
+        "frequency": "1m",
+        "handler": 1,
+        "name": "Open fds high",
+        "noDataState": "no_data",
+        "notifications": []
+      },
+      "aliasColors": {},
+      "bars": false,
+      "dashLength": 10,
+      "dashes": false,
+      "datasource": null,
+      "fieldConfig": {
+        "defaults": {},
+        "overrides": []
+      },
+      "fill": 1,
+      "fillGradient": 0,
+      "gridPos": {
+        "h": 11,
+        "w": 24,
+        "x": 0,
+        "y": 0
+      },
+      "hiddenSeries": false,
+      "id": 4,
+      "legend": {
+        "alignAsTable": true,
+        "avg": false,
+        "current": true,
+        "max": true,
+        "min": false,
+        "rightSide": false,
+        "show": true,
+        "total": false,
+        "values": true
+      },
+      "lines": true,
+      "linewidth": 1,
+      "nullPointMode": "null",
+      "options": {
+        "alertThreshold": true
+      },
+      "percentage": false,
+      "pluginVersion": "7.5.5",
+      "pointradius": 2,
+      "points": false,
+      "renderer": "flot",
+      "seriesOverrides": [],
+      "spaceLength": 10,
+      "stack": false,
+      "steppedLine": false,
+      "targets": [
+        {
+          "exemplar": true,
+          "expr": "node_filefd_allocated",
+          "interval": "",
+          "legendFormat": "{{instance}}",
+          "refId": "A"
+        }
+      ],
+      "thresholds": [
+        {
+          "colorMode": "critical",
+          "fill": true,
+          "line": true,
+          "op": "gt",
+          "value": 24000,
+          "visible": true
+        }
+      ],
+      "timeFrom": null,
+      "timeRegions": [],
+      "timeShift": null,
+      "title": "Nodes open fds",
+      "tooltip": {
+        "shared": true,
+        "sort": 0,
+        "value_type": "individual"
+      },
+      "type": "graph",
+      "xaxis": {
+        "buckets": null,
+        "mode": "time",
+        "name": null,
+        "show": true,
+        "values": []
+      },
+      "yaxes": [
+        {
+          "$$hashKey": "object:279",
+          "decimals": null,
+          "format": "short",
+          "label": "open fds",
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": true
+        },
+        {
+          "$$hashKey": "object:280",
+          "format": "short",
+          "label": "",
+          "logBase": 1,
+          "max": null,
+          "min": null,
+          "show": false
+        }
+      ],
+      "yaxis": {
+        "align": false,
+        "alignLevel": null
+      }
+    },
+    {
+      "datasource": null,
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "red",
+                "value": 40000
+              }
+            ]
+          },
+          "unit": "short"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 9,
+        "w": 24,
+        "x": 0,
+        "y": 11
+      },
+      "id": 2,
+      "options": {
+        "colorMode": "value",
+        "graphMode": "area",
+        "justifyMode": "auto",
+        "orientation": "horizontal",
+        "reduceOptions": {
+          "calcs": [
+            "last"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "text": {},
+        "textMode": "value_and_name"
+      },
+      "pluginVersion": "7.5.5",
+      "targets": [
+        {
+          "exemplar": true,
+          "expr": "node_filefd_allocated",
+          "hide": false,
+          "instant": false,
+          "interval": "",
+          "legendFormat": "{{instance}}",
+          "refId": "A"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "Node open fds",
+      "type": "stat"
+    },
+    {
+      "datasource": null,
+      "description": "Is node ready",
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "thresholds"
+          },
+          "mappings": [
+            {
+              "from": "",
+              "id": 1,
+              "text": "NotReady",
+              "to": "",
+              "type": 1,
+              "value": "0"
+            },
+            {
+              "from": "",
+              "id": 2,
+              "text": "ready",
+              "to": "",
+              "type": 1,
+              "value": "1"
+            }
+          ],
+          "max": 1,
+          "min": 0,
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green",
+                "value": null
+              },
+              {
+                "color": "dark-red",
+                "value": 0
+              },
+              {
+                "color": "semi-dark-green",
+                "value": 1
+              }
+            ]
+          }
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 8,
+        "w": 24,
+        "x": 0,
+        "y": 20
+      },
+      "id": 6,
+      "options": {
+        "orientation": "auto",
+        "reduceOptions": {
+          "calcs": [
+            "lastNotNull"
+          ],
+          "fields": "",
+          "values": false
+        },
+        "showThresholdLabels": false,
+        "showThresholdMarkers": true,
+        "text": {}
+      },
+      "pluginVersion": "7.5.5",
+      "targets": [
+        {
+          "exemplar": true,
+          "expr": "kube_node_status_condition{condition=\"Ready\",status=\"true\"}",
+          "interval": "",
+          "legendFormat": "{{node}}",
+          "refId": "A"
+        }
+      ],
+      "timeFrom": null,
+      "timeShift": null,
+      "title": "Node readiness",
+      "type": "gauge"
+    }
+  ],
+  "schemaVersion": 27,
+  "style": "dark",
+  "tags": [],
+  "templating": {
+    "list": []
+  },
+  "time": {
+    "from": "now-6h",
+    "to": "now"
+  },
+  "timepicker": {},
+  "timezone": "",
+  "title": "Custom Dashboard",
+  "uid": "9Q97TIqGz",
+  "version": 13
+}
diff --git a/ansible/roles/kube-prometheus-stack/molecule/default/molecule.yml b/ansible/roles/kube-prometheus-stack/molecule/default/molecule.yml
index 17bfcd3a..c1eafa3b 100644
--- a/ansible/roles/kube-prometheus-stack/molecule/default/molecule.yml
+++ b/ansible/roles/kube-prometheus-stack/molecule/default/molecule.yml
@@ -23,5 +23,6 @@ provisioner:
       all:
         app_name: onap
         app_data_path: "/opt/{{ app_name }}"
+        nfs_mount_path: "/nfs"
 verifier:
   name: testinfra
diff --git a/ansible/roles/kube-prometheus-stack/tasks/main.yml b/ansible/roles/kube-prometheus-stack/tasks/main.yml
index 596e4b5a..e190b758 100644
--- a/ansible/roles/kube-prometheus-stack/tasks/main.yml
+++ b/ansible/roles/kube-prometheus-stack/tasks/main.yml
@@ -10,6 +10,11 @@
     dest: "{{ kube_prometheus_stack.helm_values_file }}"
     content: "{{ kube_prometheus_stack.helm_values | combine(kube_prometheus_helm_values | default({}), recursive=True) | to_nice_yaml }}"
 
+- name: Upload custom Grafana dashboard
+  copy:
+    src: grafana_dashboard.json
+    dest: "{{ nfs_mount_path }}/kube-prometheus/kube-prometheus-grafana/dashboards/custom/"
+
 - name: "Install Helm release {{ kube_prometheus_stack.helm_release_name }}"
   community.kubernetes.helm:
     release_name: "{{ kube_prometheus_stack.helm_release_name }}"