f.IntVar(&l.MaxLabelNamesPerSeries,"validation.max-label-names-per-series",30,"Maximum number of label names per series.")
f.BoolVar(&l.RejectOldSamples,"validation.reject-old-samples",true,"Reject old samples.")
_=l.RejectOldSamplesMaxAge.Set("14d")
_=l.RejectOldSamplesMaxAge.Set("7d")
f.Var(&l.RejectOldSamplesMaxAge,"validation.reject-old-samples.max-age","Maximum accepted sample age before rejecting.")
_=l.CreationGracePeriod.Set("10m")
f.Var(&l.CreationGracePeriod,"validation.create-grace-period","Duration which table will be created/deleted before/after it's needed; we won't accept sample from before this time.")