18 lines
649 B
Markdown
18 lines
649 B
Markdown
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title = 'Graphing Sensor Data with Grafana'
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date = 2018-08-06T21:32:00-06:00
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To view trending sensor data, I installed collectd (with the "sensors" plugin
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enabled), InfluxDB, and Grafana. For some series, Grafana displayed wierd
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graphs with what looked like two values for one interval. I worked around this
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by changing the Influx query from
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SELECT "value" FROM "sensors_value" WHERE ("type" = 'temperature') AND $timeFilter GROUP BY "type_instance"
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to
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SELECT median("value") FROM "sensors_value" WHERE ("type" = 'temperature') AND $timeFilter GROUP BY time(10s), "type_instance"
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This seemed to smooth out the line quite a bit.
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