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ruler: use native histograms for client metrics #7763

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merged 3 commits into from
Sep 27, 2024
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ruler: use native histograms for client metrics #7763

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4a46856
ruler: use native histograms for client metrics
pedro-stanaka Sep 19, 2024
91a20eb
adding changelog
pedro-stanaka Sep 19, 2024
303b1f1
Merge branch 'main' into feat/http-wrappers-native-histo
pedro-stanaka Sep 24, 2024
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2 changes: 1 addition & 1 deletion CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
- [#7679](https://github.com/thanos-io/thanos/pull/7679) Query: respect store.limit.* flags when evaluating queries

### Added

- [#7763](https://github.com/thanos-io/thanos/pull/7763) Ruler: use native histograms for client latency metrics.
- [#7609](https://github.com/thanos-io/thanos/pull/7609) API: Add limit param to metadata APIs (series, label names, label values).
- [#7429](https://github.com/thanos-io/thanos/pull/7429): Reloader: introduce `TolerateEnvVarExpansionErrors` to allow suppressing errors when expanding environment variables in the configuration file. When set, this will ensure that the reloader won't consider the operation to fail when an unset environment variable is encountered. Note that all unset environment variables are left as is, whereas all set environment variables are expanded as usual.
- [#7560](https://github.com/thanos-io/thanos/pull/7560) Query: Added the possibility of filtering rules by rule_name, rule_group or file to HTTP api.
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11 changes: 11 additions & 0 deletions pkg/extprom/http/instrument_client.go
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Expand Up @@ -27,6 +27,8 @@ type ClientMetrics struct {
// e.g. 1 ClientMetrics should be used for all the clients that talk to Alertmanager.
func NewClientMetrics(reg prometheus.Registerer) *ClientMetrics {
var m ClientMetrics
const maxBucketNumber = 256
const bucketFactor = 1.1

m.inFlightGauge = promauto.With(reg).NewGauge(prometheus.GaugeOpts{
Subsystem: "http_client",
Expand All @@ -46,6 +48,9 @@ func NewClientMetrics(reg prometheus.Registerer) *ClientMetrics {
Name: "dns_duration_seconds",
Help: "Trace dns latency histogram.",
Buckets: []float64{0.025, .05, .1, .5, 1, 5, 10},

NativeHistogramBucketFactor: bucketFactor,
NativeHistogramMaxBucketNumber: maxBucketNumber,
},
[]string{"event"},
)
Expand All @@ -56,6 +61,9 @@ func NewClientMetrics(reg prometheus.Registerer) *ClientMetrics {
Name: "tls_duration_seconds",
Help: "Trace tls latency histogram.",
Buckets: []float64{0.025, .05, .1, .5, 1, 5, 10},

NativeHistogramBucketFactor: bucketFactor,
NativeHistogramMaxBucketNumber: maxBucketNumber,
},
[]string{"event"},
)
Expand All @@ -66,6 +74,9 @@ func NewClientMetrics(reg prometheus.Registerer) *ClientMetrics {
Name: "request_duration_seconds",
Help: "A histogram of request latencies.",
Buckets: []float64{0.025, .05, .1, .5, 1, 5, 10},

NativeHistogramBucketFactor: bucketFactor,
NativeHistogramMaxBucketNumber: maxBucketNumber,
},
[]string{"code", "method"},
)
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