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node_memory_MemFree{instance=\"$server\"} - node_memory_Buffers{instance=\"$server\"} - node_memory_Cached{instance=\"$server\"}", "hide": false, "interval": "", "intervalFactor": 2, "legendFormat": "memory used", "metric": "", "refId": "C", "step": 10 }, { "expr": "node_memory_Buffers{instance=\"$server\"}", "interval": "", "intervalFactor": 2, "legendFormat": "memory buffers", "metric": "", "refId": "E", "step": 10 }, { "expr": "node_memory_Cached{instance=\"$server\"}", "intervalFactor": 2, "legendFormat": "memory cached", "metric": "", "refId": "F", "step": 10 }, { "expr": "node_memory_MemFree{instance=\"$server\"}", "intervalFactor": 2, "legendFormat": "memory free", "metric": "", "refId": "D", "step": 10 } ], "thresholds": [], "timeFrom": null, "timeRegions": [], "timeShift": null, "title": "Memory usage", "tooltip": { "msResolution": false, "shared": true, "sort": 0, "value_type": "individual" }, "type": "graph", "xaxis": { "buckets": null, "mode": "time", "name": null, "show": true, "values": [] }, "yaxes": [ { "format": "bytes", "label": null, "logBase": 1, "max": null, "min": "0", "show": true }, { "format": "short", "label": null, "logBase": 1, "max": null, "min": null, "show": true } ], "yaxis": { "align": false, "alignLevel": null } }, { "cacheTimeout": null, "colorBackground": false, "colorValue": false, "colors": [ "rgba(50, 172, 45, 0.97)", "rgba(237, 129, 40, 0.89)", "rgba(245, 54, 54, 0.9)" ], "datasource": "${DS_PROMETHEUS}", "editable": true, "error": false, "format": "percent", "gauge": { "maxValue": 100, "minValue": 0, "show": true, "thresholdLabels": false, "thresholdMarkers": true }, "gridPos": { "h": 7, "w": 6, "x": 18, "y": 7 }, "id": 5, "interval": null, "links": [], "mappingType": 1, "mappingTypes": [ { "name": "value to text", "value": 1 }, { "name": "range to text", "value": 2 } ], "maxDataPoints": 100, "nullPointMode": "connected", "nullText": null, "options": {}, "postfix": "", "postfixFontSize": "50%", "prefix": "", "prefixFontSize": "50%", "rangeMaps": [ { "from": "null", "text": "N/A", "to": "null" } ], "sparkline": { "fillColor": "rgba(31, 118, 189, 0.18)", "full": false, "lineColor": "rgb(31, 120, 193)", "show": false }, "tableColumn": "", "targets": [ { "expr": "((node_memory_MemTotal{instance=\"$server\"} - 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