Grafana dashboard: Checking Hadoop's liveness with logs rate
Description: Since Hadoop don't have Prometheus metrics out of the box, we  have invented the way how to check is it ok. We plot the counter of specific log tht is posted by Hadoop regularly and pick it from the Loki

Please add Loki as Prometheus as described there https://stackoverflow.com/questions/68794873/loki-that-is-set-up-as-prometheus-datasource-in-order-to-have-alerts-on-log-coun to use this dashboard

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      "description": "please add Loki as Prometheus as described there https://stackoverflow.com/questions/68794873/loki-that-is-set-up-as-prometheus-datasource-in-order-to-have-alerts-on-log-coun",
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      "pluginName": "Prometheus"
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  "annotations": {
    "list": [
      {
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        "datasource": "-- Grafana --",
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      "aliasColors": {},
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      "datasource": "${DS_LOKIASGRAFANA}",
      "fieldConfig": {
        "defaults": {
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        "overrides": []
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      "fill": 1,
      "fillGradient": 0,
      "gridPos": {
        "h": 9,
        "w": 12,
        "x": 0,
        "y": 0
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      "hiddenSeries": false,
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      "renderer": "flot",
      "seriesOverrides": [],
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      "targets": [
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          "interval": "",
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          "refId": "A"
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      "thresholds": [
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          "colorMode": "critical",
          "fill": true,
          "line": true,
          "op": "lt",
          "value": 1
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      ],
      "timeFrom": null,
      "timeRegions": [],
      "timeShift": null,
      "title": "Hadoop logs rate count_over_time({app=\"hadoop\"} |=\"INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving\"[5m])",
      "tooltip": {
        "shared": true,
        "sort": 0,
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  "refresh": false,
  "schemaVersion": 26,
  "style": "dark",
  "tags": [],
  "templating": {
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  "time": {
    "from": "now-1h",
    "to": "now"
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  "timepicker": {},
  "timezone": "",
  "title": "Checking Hadoop's liveness with logs rate",
  "uid": "logsratehadoop",
  "version": 1,
  "description": "Since Hadoop don't have Prometheus metrics out of the box, we  have invented the way how to check is it ok. We plot the counter of specific log tht is posted by Hadoop regularly and pick it from the Loki"
}