Delete points with unwanted field values from InfluxDB measurement

Question

InfluxDB lets you delete points based on WHERE tag=\'value\' conditions, but not by field value.

For example, if you have accidentally stored a measurem

Answer 1

Ugly and slow but fairly robust solution: store timestamps, then delete entries by timestamp, optionally filtering DELETE statement with additional tags.

N.B. this only works if fields have unique timestamps! E.g. if there are multiple fields for one timestamp, all these fields are deleted with below command. Using epoch=ns practically mitigates this, unless you have ~billion data points/second

curl -G 'http://localhost:8086/query?db=DATABASE&epoch=ns' \
  --data-urlencode "q=SELECT * FROM metrics WHERE cpu=-1" |\
  jq -r "(.results[0].series[0].values[][0])" > delete_timestamps.txt

for i in $(cat delete_timestamps.txt); do
  echo $i;
  curl -G 'http://localhost:8086/query?db=DATABASE&epoch=ns' \
    --data-urlencode "q=DELETE FROM metrics WHERE time=$i AND cpu=-1"; 
done