Regex parse issue

[dguihal]

Describe the bug

Parse error in regex

example:

node_uname_info{nodename=~"(?i:(test)(\.[a-z0-9.]+)?)"}

ERROR: 422, error when executing query="node_uname_info{nodename=~"(?i:(test)(\.[a-z0-9.]+)?)"}" on the time range (start=1743682803612, end=1743684603612, step=3000): cannot expand WITH expressions: cannot parse string literal ""(?i:(test)(\.[a-z0-9.]+)?)"": invalid syntax

this come from an issue I met using the Kubernetes / Views / Nodes dashboard provided with vm-k8s stack (which come from kubernetes mixins)

The regex is valid according to regex101

To Reproduce

Try above request in VM query ui or load Kubernetes / Views / Nodes dashboard in grafana using VM as prometheus datasource (https://grafana.com/grafana/dashboards/15759-kubernetes-views-nodes/)

Unfortunatly I don't have a standard prometheus to compare behavior

Version

image: victoriametrics/victoria-metrics:v1.114.0 from victoria-metrics-k8s-stack@0.41.0

Logs

No response

Screenshots

Used command-line flags

No response

Additional information

The issue seems around the \. escaping.

[f41gh7]

For promql/metricsql requests \. should be double escaped: \\. Looks like a bug with dashboard.

[zekker6]

Related: VictoriaMetrics/helm-charts#2100

[AndrewChubatiuk]

related dotdc/grafana-dashboards-kubernetes#145