Grafana dashboard: Erlang-Distribution
Description: Erlang Distribution links, inet socket, port driver, dist process + tls_connection & tls_sender

Understand the behaviour of Erlang clustering via Erlang Distribution links, inet socket, port driver & dist process.

If the Erlang Distribution is using TLS, the state of tls_connection & tls_sender processes will be shown as well.

Metrics displayed:

* Distribution link
  * State: established / connecting / waiting
  * Data buffered
  * Data sent to peer node / s
  * Data received from peer node / s
  * Messages sent to peer node / s
  * Messages received from peer node / s
  * Average inet packet size sent to peer node
  * Average inet packet size received from peer node

* Port driver
  * Memory used
  * Data buffered

* Dist process
    * State: waiting / running / garbage_collecting / runnable / suspended / exiting
    * Queued messages
    * Memory used
    * Process reductions / s

The last set of metrics are repeated for the `tls_connection` and `tls_sender` processes if the Erlang Distribution is using TLS.

Filter by:

* RabbitMQ Cluster
* Process type

Depends on `rabbitmq-prometheus` plugin, built-in since [RabbitMQ v3.8.0](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v3.8.0)

Learn more about [RabbitMQ built-in Prometheus support](https://www.rabbitmq.com/prometheus.html)

To get it working locally with RabbitMQ in 3 simple steps, follow this [Quick Start guide](https://www.rabbitmq.com/prometheus.html#quick-start)


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        "mode": "time",
        "name": null,
        "show": true,
        "values": []
      },
      "yaxes": [
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          "decimals": 0,
          "format": "decbytes",
          "label": null,
          "logBase": 1,
          "max": null,
          "min": "0",
          "show": true
        },
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          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
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      "yaxis": {
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        "alignLevel": null
      }
    },
    {
      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_PROMETHEUS}",
      "description": "The total number of bytes queued by the port using the ERTS driver queue implementation\n\nAny values above a few KBs hint to an overloaded distribution",
      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 5,
        "w": 12,
        "x": 12,
        "y": 26
      },
      "hiddenSeries": false,
      "id": 7,
      "legend": {
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        "avg": false,
        "current": true,
        "max": true,
        "min": true,
        "show": false,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [
        {
          "alias": "/rabbit/",
          "color": "#C4162A"
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      ],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
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      "thresholds": [
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          "fill": true,
          "line": true,
          "op": "gt",
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          "yaxis": "left"
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      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Data in the port driver buffer",
      "tooltip": {
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        "sort": 2,
        "value_type": "individual"
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        },
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          "max": null,
          "min": null,
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      "yaxis": {
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        "alignLevel": null
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    },
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      "datasource": "${DS_PROMETHEUS}",
      "gridPos": {
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        "w": 24,
        "x": 0,
        "y": 31
      },
      "id": 14,
      "panels": [],
      "repeat": "erlang_vm_dist_proc_type",
      "title": "$erlang_vm_dist_proc_type process",
      "type": "row"
    },
    {
      "cacheTimeout": null,
      "cards": {
        "cardHSpacing": 2,
        "cardMinWidth": 5,
        "cardRound": null,
        "cardVSpacing": 2
      },
      "color": {
        "cardColor": "#b4ff00",
        "colorScale": "sqrt",
        "colorScheme": "interpolateGnYlRd",
        "defaultColor": "#757575",
        "exponent": 0.5,
        "mode": "discrete",
        "thresholds": [
          {
            "color": "#37872D",
            "tooltip": "waiting",
            "value": "6"
          },
          {
            "color": "#96D98D",
            "tooltip": "running",
            "value": "5"
          },
          {
            "color": "#1F60C4",
            "tooltip": "garbage_collecting",
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          },
          {
            "color": "#FADE2A",
            "tooltip": "runnable",
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          },
          {
            "color": "#FA6400",
            "tooltip": "suspended",
            "value": "2"
          },
          {
            "color": "#C4162A",
            "tooltip": "exiting",
            "value": "1"
          }
        ]
      },
      "data": {
        "decimals": null,
        "unitFormat": "short"
      },
      "datasource": "${DS_PROMETHEUS}",
      "description": "",
      "gridPos": {
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        "w": 12,
        "x": 0,
        "y": 32
      },
      "highlightCards": true,
      "id": 18,
      "legend": {
        "show": true
      },
      "links": [],
      "nullPointMode": "as empty",
      "targets": [
        {
          "aggregation": "Last",
          "decimals": 2,
          "displayAliasType": "Warning / Critical",
          "displayType": "Regular",
          "displayValueWithAlias": "Never",
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          "refId": "A",
          "units": "none",
          "valueHandler": "Number Threshold"
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      "timeFrom": null,
      "timeShift": null,
      "title": "Process state",
      "tooltip": {
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      },
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      "useMax": true,
      "xAxis": {
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        "minBucketWidthToShowWeekends": 4,
        "show": true,
        "showCrosshair": true,
        "showWeekends": true
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        "showCrosshair": false
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    },
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      "bars": false,
      "dashLength": 10,
      "dashes": false,
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      "description": "The number of messages currently in the message queue of the process\n\nAny values above 0 hint to an overloaded distribution",
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      "fillGradient": 0,
      "gridPos": {
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        "x": 12,
        "y": 32
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      "id": 16,
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        "max": true,
        "min": true,
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        "values": true
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      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
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      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
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          "alias": "/rabbit/",
          "color": "#C4162A"
        }
      ],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
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          "intervalFactor": 1,
          "legendFormat": "{{rabbitmq_node}} -> {{peer}}",
          "refId": "A"
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      "thresholds": [
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          "fill": true,
          "line": true,
          "op": "gt",
          "value": 0,
          "yaxis": "left"
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      ],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Messages in the process queue",
      "tooltip": {
        "shared": true,
        "sort": 2,
        "value_type": "individual"
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      "type": "graph",
      "xaxis": {
        "buckets": null,
        "mode": "time",
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        "show": true,
        "values": []
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          "format": "short",
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          "logBase": 1,
          "max": null,
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          "logBase": 1,
          "max": null,
          "min": null,
          "show": true
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        "alignLevel": null
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    },
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      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_PROMETHEUS}",
      "description": "The size in bytes of process memory. This includes call stack, heap, and internal structures.",
      "fill": 0,
      "fillGradient": 0,
      "gridPos": {
        "h": 5,
        "w": 12,
        "x": 0,
        "y": 37
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      "hiddenSeries": false,
      "id": 15,
      "legend": {
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        "avg": false,
        "current": true,
        "max": true,
        "min": true,
        "show": false,
        "total": false,
        "values": true
      },
      "lines": true,
      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
        "dataLinks": []
      },
      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
      "seriesOverrides": [
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          "color": "#56A64B"
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          "color": "#F2CC0C"
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          "color": "#3274D9"
        },
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?3(\\b|\\.)/",
          "color": "#A352CC"
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?4(\\b|\\.)/",
          "color": "#FF780A"
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          "color": "#FFEE52"
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?7(\\b|\\.)/",
          "color": "#8AB8FF"
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?8(\\b|\\.)/",
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      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
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          "legendFormat": "{{rabbitmq_node}} -> {{peer}}",
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      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
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      "tooltip": {
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        "sort": 2,
        "value_type": "individual"
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        "mode": "time",
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        "show": true,
        "values": []
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          "format": "decbytes",
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          "min": "0",
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          "logBase": 1,
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          "min": null,
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      "aliasColors": {},
      "bars": false,
      "dashLength": 10,
      "dashes": false,
      "datasource": "${DS_PROMETHEUS}",
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      "fill": 0,
      "fillGradient": 0,
      "gridPos": {
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        "w": 12,
        "x": 12,
        "y": 37
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      "id": 17,
      "legend": {
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      "linewidth": 1,
      "links": [],
      "nullPointMode": "null",
      "options": {
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      "percentage": false,
      "pointradius": 2,
      "points": false,
      "renderer": "flot",
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        },
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?3(\\b|\\.)/",
          "color": "#A352CC"
        },
        {
          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?4(\\b|\\.)/",
          "color": "#FF780A"
        },
        {
          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?5(\\b|\\.)/",
          "color": "#96D98D"
        },
        {
          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?6(\\b|\\.)/",
          "color": "#FFEE52"
        },
        {
          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?7(\\b|\\.)/",
          "color": "#8AB8FF"
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          "alias": "/^rabbit@[a-zA-Z\\.\\-]*?8(\\b|\\.)/",
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          "color": "#FFB357"
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      ],
      "spaceLength": 10,
      "stack": false,
      "steppedLine": false,
      "targets": [
        {
          "expr": "rate(erlang_vm_dist_proc_reductions{type=\"$erlang_vm_dist_proc_type\"}[60s]) * on(instance) group_left(rabbitmq_cluster, rabbitmq_node) rabbitmq_identity_info{rabbitmq_cluster=\"$rabbitmq_cluster\", namespace=\"$namespace\"}",
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      "thresholds": [],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Process reductions / s",
      "tooltip": {
        "shared": true,
        "sort": 2,
        "value_type": "individual"
      },
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        "show": true,
        "values": []
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          "logBase": 1,
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          "min": "0",
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          "show": true
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  "refresh": "15s",
  "schemaVersion": 22,
  "style": "dark",
  "tags": [
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  "templating": {
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      {
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          "selected": false,
          "text": "default",
          "value": "default"
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        "hide": 2,
        "includeAll": false,
        "label": "datasource",
        "multi": false,
        "name": "DS_PROMETHEUS",
        "options": [],
        "query": "prometheus",
        "refresh": 1,
        "regex": "",
        "skipUrlSync": false,
        "type": "datasource",
        "datasource": "${DS_PROMETHEUS}"
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_PROMETHEUS}",
        "definition": "label_values(rabbitmq_identity_info, namespace)",
        "hide": 0,
        "includeAll": false,
        "label": "Namespace",
        "multi": false,
        "name": "namespace",
        "options": [],
        "query": "label_values(rabbitmq_identity_info, namespace)",
        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
        "sort": 1,
        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
        "allValue": null,
        "current": {},
        "datasource": "${DS_PROMETHEUS}",
        "definition": "label_values(rabbitmq_identity_info{namespace=\"$namespace\"}, rabbitmq_cluster)",
        "hide": 0,
        "includeAll": false,
        "index": -1,
        "label": "RabbitMQ Cluster",
        "multi": false,
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        "refresh": 2,
        "regex": "",
        "skipUrlSync": false,
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        "tagValuesQuery": "",
        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
      },
      {
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        "current": {
          "text": "All",
          "value": [
            "$__all"
          ]
        },
        "datasource": "${DS_PROMETHEUS}",
        "definition": "label_values(erlang_vm_dist_proc_status, type)",
        "hide": 0,
        "includeAll": true,
        "index": -1,
        "label": "Process type",
        "multi": true,
        "name": "erlang_vm_dist_proc_type",
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        "skipUrlSync": false,
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        "tags": [],
        "tagsQuery": "",
        "type": "query",
        "useTags": false
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  },
  "time": {
    "from": "now-15m",
    "to": "now"
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  "timepicker": {
    "refresh_intervals": [
      "15s",
      "30s",
      "1m",
      "5m",
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    "time_options": [
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  "variables": {
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}