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lib/storage: print tenant ID in log when discarding or truncating labels (#5658)

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Previously, it was not possible to determine which tenant sends metrics with excessive amount of labels of label values.

Signed-off-by: Zakhar Bessarab <z.bessarab@victoriametrics.com>
Co-authored-by: Aliaksandr Valialkin <valyala@victoriametrics.com>
This commit is contained in:
Zakhar Bessarab 2024-01-23 04:27:59 +04:00 committed by GitHub
parent 22a8664f51
commit 60ef978ffc
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GPG key ID: B5690EEEBB952194
2 changed files with 9 additions and 8 deletions
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1
docs/CHANGELOG.md
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@ -53,6 +53,7 @@ The sandbox cluster installation is running under the constant load generated by
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): rename cmd-line flag `vm-native-disable-retries` to `vm-native-disable-per-metric-migration` to better reflect its meaning.
* FEATURE: [vmctl](https://docs.victoriametrics.com/vmctl.html): add `-vm-native-src-insecure-skip-verify` and `-vm-native-dst-insecure-skip-verify` command-line flags for native protocol. It can be used for skipping TLS certificate verification when connecting to the source or destination addresses.
* FEATURE: [Alerting rules for VictoriaMetrics](https://github.com/VictoriaMetrics/VictoriaMetrics/tree/master/deployment/docker#alerts): add `job` label to `DiskRunsOutOfSpace` alerting rule, so it is easier to understand to which installation the triggered instance belongs.
* FEATURE: `vmstorage`: add tenant identifier for log messages regarding dropping excessive labels due to limits defined by `-maxLabelsPerTimeseries` or `-maxLabelValueLen` command-line flags. Previously, it was hard to understand to which tenant the dropped labels belong.
* FEATURE: add [VictoriaMetrics datasource](https://github.com/VictoriaMetrics/grafana-datasource) to docker compose environment. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5363).
* BUGFIX: properly return errors from [export APIs](https://docs.victoriametrics.com/#how-to-export-time-series). Previously these errors were silently suppressed. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5649).

16
lib/storage/metric_name.go
View file

@ -578,7 +578,7 @@ func MarshalMetricNameRaw(dst []byte, accountID, projectID uint32, labels []prom
dstSize := dstLen + 8
for i := range labels {
if i >= maxLabelsPerTimeseries {
trackDroppedLabels(labels, labels[i:])
trackDroppedLabels(labels, labels[i:], accountID, projectID)
break
}
label := &labels[i]
@ -587,7 +587,7 @@ func MarshalMetricNameRaw(dst []byte, accountID, projectID uint32, labels []prom
label.Name = label.Name[:maxLabelNameLen]
}
if len(label.Value) > maxLabelValueLen {
trackTruncatedLabels(labels, label)
trackTruncatedLabels(labels, label, accountID, projectID)
label.Value = label.Value[:maxLabelValueLen]
}
if len(label.Value) == 0 {
@ -632,28 +632,28 @@ var (
TooLongLabelValues uint64
)
func trackDroppedLabels(labels, droppedLabels []prompb.Label) {
func trackDroppedLabels(labels, droppedLabels []prompb.Label, accountID, projectID uint32) {
atomic.AddUint64(&MetricsWithDroppedLabels, 1)
select {
case <-droppedLabelsLogTicker.C:
// Do not call logger.WithThrottler() here, since this will result in increased CPU usage
// because labelsToString() will be called with each trackDroppedLabels call.
logger.Warnf("dropping %d labels for %s; dropped labels: %s; either reduce the number of labels for this metric "+
logger.Warnf("dropping %d labels for %s; dropped labels: %s; tenant: %d:%d; either reduce the number of labels for this metric "+
"or increase -maxLabelsPerTimeseries=%d command-line flag value",
len(droppedLabels), labelsToString(labels), labelsToString(droppedLabels), maxLabelsPerTimeseries)
len(droppedLabels), labelsToString(labels), labelsToString(droppedLabels), accountID, projectID, maxLabelsPerTimeseries)
default:
}
}
func trackTruncatedLabels(labels []prompb.Label, truncated *prompb.Label) {
func trackTruncatedLabels(labels []prompb.Label, truncated *prompb.Label, accountID, projectID uint32) {
atomic.AddUint64(&TooLongLabelValues, 1)
select {
case <-truncatedLabelsLogTicker.C:
// Do not call logger.WithThrottler() here, since this will result in increased CPU usage
// because labelsToString() will be called with each trackTruncatedLabels call.
logger.Warnf("truncated label value as it exceeds configured maximal label value length: max %d, actual %d;"+
" truncated label: %s; original labels: %s; either reduce the label value length or increase -maxLabelValueLen=%d;",
maxLabelValueLen, len(truncated.Value), truncated.Name, labelsToString(labels), maxLabelValueLen)
" truncated label: %s; original labels: %s; tenant: %d:%d; either reduce the label value length or increase -maxLabelValueLen=%d;",
maxLabelValueLen, len(truncated.Value), truncated.Name, labelsToString(labels), accountID, projectID, maxLabelValueLen)
default:
}
}