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reic

Input Stack:
value: String
key: String
 ⇨ Output Stack:
(key=~/^value/i): Query
 

Warning

Case-insensitive matching requires a full scan of all time series for the specified key, which can be significantly slower than exact matches. Use this operator sparingly and only when case-insensitive matching is genuinely required. For case-sensitive regex matching, use :re instead.

Select time series where the value for a key matches the specified regular expression with case insensitive matching. The regular expression value will be automatically anchored at the start. For more information on supported patterns, see the Java regular expressions documentation.

Parameters

  • key: The tag key to match against (e.g., name, nf.app)
  • value: A regular expression pattern to match against the key's value (case-insensitive)

Examples

Case-insensitive matching where query casing doesn't match the data:

name,ssCPU,:reic

When matching against the sample data in the table below, the highlighted time series would be included in the result set:

Namenf.appnf.node
ssCpuUser alerttest i-0123
ssCpuSystem alerttest i-0123
ssCpuUser nccp i-0abc
ssCpuSystem nccp i-0abc
numRequests nccp i-0abc
ssCpuUser api i-0456

Notice that the casing for the query (ssCPU) does not match the data (ssCpu), but the case-insensitive matching still finds the correct time series.

  • :re - Case-sensitive regular expression matching (much faster)
  • :eq - Exact string matching (fastest option)
  • :in - Match against multiple exact values
  • :has - Check if a tag key exists