dashboard-Seq.Cluster.Node Metrics.template

{
  "OwnerId": null,
  "Title": "Seq.Cluster.Node Metrics",
  "IsProtected": false,
  "SignalExpression": {
    "Kind": "Signal",
    "SignalId": ref("signal-Metrics.template")
  },
  "Charts": [
    {
      "Id": null,
      "Title": "became_candidate",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_candidate)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_candidate is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the candidate state"
    },
    {
      "Id": null,
      "Title": "became_follower",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_follower)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_follower is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the follower state"
    },
    {
      "Id": null,
      "Title": "became_leader",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_leader)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_leader is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the leader state"
    },
    {
      "Id": null,
      "Title": "became_offline",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_offline)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_offline is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the offline state"
    },
    {
      "Id": null,
      "Title": "became_stopping",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_stopping)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_stopping is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the stopping state"
    },
    {
      "Id": null,
      "Title": "became_suspended",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(became_suspended)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "became_suspended is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": true,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned to the suspended state"
    },
    {
      "Id": null,
      "Title": "cluster_member_count",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "min(cluster_member_count)",
              "Label": "min"
            },
            {
              "Value": "max(cluster_member_count)",
              "Label": "max"
            },
            {
              "Value": "mean(cluster_member_count)",
              "Label": "mean"
            }
          ],
          "Where": "cluster_member_count is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": false,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The number of active cluster nodes identified by their name."
    },
    {
      "Id": null,
      "Title": "cumulative_heartbeat_time (ms)",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(cumulative_heartbeat_time)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "cumulative_heartbeat_time is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The total time taken for the Seq node to update its state in the shared consensus database."
    },
    {
      "Id": null,
      "Title": "fresh_cluster_member_count",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "min(fresh_cluster_member_count)",
              "Label": "min"
            },
            {
              "Value": "max(fresh_cluster_member_count)",
              "Label": "max"
            },
            {
              "Value": "mean(fresh_cluster_member_count)",
              "Label": "mean"
            }
          ],
          "Where": "fresh_cluster_member_count is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": false,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The number of active cluster nodes with data age better than 5 seconds. This includes the leader node itself."
    },
    {
      "Id": null,
      "Title": "heartbeat_error",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(heartbeat_error)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "heartbeat_error is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Reds"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node was unable to update its state in the shared consensus database."
    },
    {
      "Id": null,
      "Title": "heartbeat_success",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(heartbeat_success)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "heartbeat_success is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node was able to update its state in the shared consensus database."
    },
    {
      "Id": null,
      "Title": "leader_identified",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(leader_identified)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "leader_identified is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node identified another node as being the current cluster leader."
    },
    {
      "Id": null,
      "Title": "leadership_lease_obtained",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(leadership_lease_obtained)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "leadership_lease_obtained is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node acquired or extended its lease as cluster leader."
    },
    {
      "Id": null,
      "Title": "membership_cleaned",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(membership_cleaned)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "membership_cleaned is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node cleaned expired cluster members from the shared membership database."
    },
    {
      "Id": null,
      "Title": "membership_table_size",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "min(membership_table_size)",
              "Label": "min"
            },
            {
              "Value": "max(membership_table_size)",
              "Label": "max"
            },
            {
              "Value": "mean(membership_table_size)",
              "Label": "mean"
            }
          ],
          "Where": "membership_table_size is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": false,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The number of active cluster node entries observed in the shared membership database."
    },
    {
      "Id": null,
      "Title": "reactivated",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(reactivated)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "reactivated is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node transitioned from suspended to leader state"
    },
    {
      "Id": null,
      "Title": "replicated_data_age (ms)",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "min(replicated_data_age)",
              "Label": "min"
            },
            {
              "Value": "max(replicated_data_age)",
              "Label": "max"
            },
            {
              "Value": "mean(replicated_data_age)",
              "Label": "mean"
            }
          ],
          "Where": "replicated_data_age is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": false,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The number of milliseconds since the most up-to-date cluster node last synchronized."
    },
    {
      "Id": null,
      "Title": "up_to_date_cluster_member_count",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "min(up_to_date_cluster_member_count)",
              "Label": "min"
            },
            {
              "Value": "max(up_to_date_cluster_member_count)",
              "Label": "max"
            },
            {
              "Value": "mean(up_to_date_cluster_member_count)",
              "Label": "mean"
            }
          ],
          "Where": "up_to_date_cluster_member_count is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": false,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The number of active cluster nodes that carry precisely the same data as the leader node. This includes the leader node itself. This value is important during graceful fail-over, but is not useful otherwise because of regular fluctuations owing to propagation of the cluster informational generation."
    },
    {
      "Id": null,
      "Title": "vacancy_observed",
      "SignalExpression": null,
      "Queries": [
        {
          "Id": null,
          "Measurements": [
            {
              "Value": "sum(vacancy_observed)",
              "Label": "sum_of_deltas"
            }
          ],
          "Where": "vacancy_observed is not null",
          "SignalExpression": null,
          "GroupBy": [
            "@Resource.seq.node.name"
          ],
          "DisplayStyle": {
            "Type": "Line",
            "LineFillToZeroY": true,
            "LineShowMarkers": false,
            "BarOverlaySum": true,
            "UseLogarithmicScale": false,
            "SuppressLegend": true,
            "Palette": "Default"
          },
          "Having": null,
          "OrderBy": [],
          "Limit": null
        }
      ],
      "DisplayStyle": {
        "WidthColumns": 3,
        "HeightRows": 1
      },
      "Description": "The Seq node identified that no node is currently leading the cluster."
    }
  ],
  "$entity": "dashboard"
}