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app/vminsert: increase default value for -maxLabelValueLen command-line flag from 1KiB to 4KiB
It has been appeared that the standard Kubernetes monitoring can generate labels with sizes up to 4KiB
This is a follow-up for a5d1013042
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/6176
This commit is contained in:
Aliaksandr Valialkin
parent
a468a6e985
commit
e3d5714f6f
@ -2880,7 +2880,7 @@ Pass `-help` to VictoriaMetrics in order to see the list of supported command-li
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The maximum size in bytes of a single Prometheus remote_write API request
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Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 33554432)
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-maxLabelValueLen int
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 1024)
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 4096)
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-maxLabelsPerTimeseries int
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The maximum number of labels accepted per time series. Superfluous labels are dropped. In this case the vm_metrics_with_dropped_labels_total metric at /metrics page is incremented (default 30)
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-memory.allowedBytes size
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@ -67,7 +67,7 @@ var (
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configAuthKey = flagutil.NewPassword("configAuthKey", "Authorization key for accessing /config page. It must be passed via authKey query arg. It overrides httpAuth.* settings.")
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reloadAuthKey = flagutil.NewPassword("reloadAuthKey", "Auth key for /-/reload http endpoint. It must be passed via authKey query arg. It overrides httpAuth.* settings.")
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maxLabelsPerTimeseries = flag.Int("maxLabelsPerTimeseries", 30, "The maximum number of labels accepted per time series. Superfluous labels are dropped. In this case the vm_metrics_with_dropped_labels_total metric at /metrics page is incremented")
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maxLabelValueLen = flag.Int("maxLabelValueLen", 1024, "The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented")
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maxLabelValueLen = flag.Int("maxLabelValueLen", 4*1024, "The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented")
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)
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var (
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@ -108,7 +108,7 @@ Released at 2024-06-07
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**Update note 2: the `-streamAggr.dropInputLabels` command-line flag at `vmagent` was renamed to `-remoteWrite.streamAggr.dropInputLabels`. `-streamAggr.dropInputLabels` is now used for global streaming aggregation.**
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**Update note 3: the `-maxLabelValueLen` command-line flag default value was changed from 16kB to 1kB. It may lead to truncating of labels with enormous values.**
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**Update note 3: the `-maxLabelValueLen` command-line flag default value was changed from 16KiB to 4KiB. It may lead to truncating of labels with too long values.**
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* SECURITY: upgrade Go builder from Go1.22.2 to Go1.22.4. See the list of issues addressed in [Go1.22.3](https://github.com/golang/go/issues?q=milestone%3AGo1.22.3+label%3ACherryPickApproved) and [Go1.22.4](https://github.com/golang/go/issues?q=milestone%3AGo1.22.4+label%3ACherryPickApproved).
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* SECURITY: upgrade base docker image (Alpine) from 3.19.1 to 3.20.0. See [alpine 3.20.0 release notes](https://www.alpinelinux.org/posts/Alpine-3.20.0-released.html).
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@ -1124,4 +1124,3 @@ See changes [here](https://docs.victoriametrics.com/changelog_2020/#v1420)
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## Previous releases
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See [releases page](https://github.com/VictoriaMetrics/VictoriaMetrics/releases).
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@ -12,9 +12,9 @@ aliases:
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# Cluster version
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<picture>
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<source media="(prefers-color-scheme: dark)" srcset="logo_white.webp">
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<source media="(prefers-color-scheme: light)" srcset="logo.webp">
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<img width="300" alt="VictoriaMetrics logo" src="logo.webp">
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<source srcset="logo_white.webp" media="(prefers-color-scheme: dark)">
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<source srcset="logo.webp" media="(prefers-color-scheme: light)">
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<img src="logo.webp" width="300" alt="VictoriaMetrics logo">
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</picture>
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VictoriaMetrics is a fast, cost-effective and scalable time series database. It can be used as a long-term remote storage for Prometheus.
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@ -1189,7 +1189,7 @@ Below is the output for `/path/to/vminsert -help`:
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The maximum size in bytes of a single Prometheus remote_write API request
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Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 33554432)
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-maxLabelValueLen int
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 16384)
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 4096)
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-maxLabelsPerTimeseries int
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The maximum number of labels accepted per time series. Superfluous labels are dropped. In this case the vm_metrics_with_dropped_labels_total metric at /metrics page is incremented (default 30)
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-memory.allowedBytes size
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@ -2883,7 +2883,7 @@ Pass `-help` to VictoriaMetrics in order to see the list of supported command-li
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The maximum size in bytes of a single Prometheus remote_write API request
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Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 33554432)
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-maxLabelValueLen int
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 1024)
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 4096)
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-maxLabelsPerTimeseries int
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The maximum number of labels accepted per time series. Superfluous labels are dropped. In this case the vm_metrics_with_dropped_labels_total metric at /metrics page is incremented (default 30)
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-memory.allowedBytes size
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@ -2891,7 +2891,7 @@ Pass `-help` to VictoriaMetrics in order to see the list of supported command-li
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The maximum size in bytes of a single Prometheus remote_write API request
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Supports the following optional suffixes for size values: KB, MB, GB, TB, KiB, MiB, GiB, TiB (default 33554432)
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-maxLabelValueLen int
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 1024)
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The maximum length of label values in the accepted time series. Longer label values are truncated. In this case the vm_too_long_label_values_total metric at /metrics page is incremented (default 4096)
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-maxLabelsPerTimeseries int
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The maximum number of labels accepted per time series. Superfluous labels are dropped. In this case the vm_metrics_with_dropped_labels_total metric at /metrics page is incremented (default 30)
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-memory.allowedBytes size
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@ -349,7 +349,7 @@ This limit can be changed via `-maxLabelsPerTimeseries` command-line flag if nec
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Every label value can contain an arbitrary string value. The good practice is to use short and meaningful label values to
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describe the attribute of the metric, not to tell the story about it. For example, label-value pair
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`environment="prod"` is ok, but `log_message="long log message with a lot of details..."` is not ok. By default,
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VictoriaMetrics limits label's value size with 1kB. This limit can be changed via `-maxLabelValueLen` command-line flag.
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VictoriaMetrics limits label's value size with 4KiB. This limit can be changed via `-maxLabelValueLen` command-line flag.
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It is very important to keep under control the number of unique label values, since every unique label value
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leads to a new [time series](#time-series). Try to avoid using volatile label values such as session ID or query ID in order to
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