PromQL Regex and the left bracket [ character

[Patrick Mackey]

Hi, all.

I'm trying to match the left bracket character '[' with a regex and seem to be hitting some issues. I've tried with the octal sequence \133 and the hex sequence \x5B but both return either false positive matches or the following error:

Error executing query: invalid parameter "query": 1:19: parse error: error parsing regexp: missing closing ]: `[.*)$`

I'm running 2.26.0 from Docker.

My query is variations of:
ifOperStatus{ifAlias=~"\133.*"}

Matching the right bracket ']' with \135 and \x5D works fine.

Any ideas?

[Matthias Rampke]

Try using [[] (match any of the following characters: [): https://play.golang.org/p/ynvSW3lIHDY

/MR

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[Patrick Mackey]

Yes, that works. Thanks, Matthias!