prometheus

Commit Graph

Author	SHA1	Message	Date
Ziqi Zhao	df2a0ecf3b	Native Histograms: support `native_histogram_min_bucket_factor` in scrape_config (#13222 ) Native Histograms: support native_histogram_min_bucket_factor in scrape_config --------- Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com> Signed-off-by: Björn Rabenstein <github@rabenste.in> Co-authored-by: George Krajcsovits <krajorama@users.noreply.github.com> Co-authored-by: Björn Rabenstein <github@rabenste.in>	2 years ago
Kumar Kalpadiptya Roy	e61e5938d6	Issue #13268 : fix quality value in accept header Signed-off-by: Kumar Kalpadiptya Roy <kalpadiptya.roy@outlook.com>	2 years ago
machine424	2f60177203	scrape_test.go: Increase scrape interval in TestScrapeLoopCache to reduce potential flakiness Signed-off-by: machine424 <ayoubmrini424@gmail.com>	2 years ago
Kumar Kalpadiptya Roy	b012366c33	Issue #13268 : fix quality value in accept header Signed-off-by: Kumar Kalpadiptya Roy <kalpadiptya.roy@outlook.com>	2 years ago
Bryan Boreham	c83e1fc574	textparse: remove MetricType alias No backwards-compatibility; make a clean break. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	8065bef172	Move metric type definitions to common/model They are used in multiple repos, so common is a better place for them. Several packages now don't depend on `model/textparse`, e.g. `storage/remote`. Also remove `metadata` struct from `api.go`, since it was identical to a struct in the `metadata` package. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Arthur Silva Sens	5082655392	Append Created Timestamps (#12733 ) * Append created timestamps. Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Log when created timestamps are ignored Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Proposed changes to Append CT PR. Changes: * Changed textparse Parser interface for consistency and robustness. * Changed CT interface to be more explicit and handle validation. * Simplified test, change scrapeManager to allow testability. * Added TODOs. Signed-off-by: bwplotka <bwplotka@gmail.com> * Updates. Signed-off-by: bwplotka <bwplotka@gmail.com> * Addressed comments. Signed-off-by: bwplotka <bwplotka@gmail.com> * Refactor head_appender test Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Fix linter issues Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> * Use model.Sample in head appender test Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> --------- Signed-off-by: Arthur Silva Sens <arthur.sens@coralogix.com> Signed-off-by: bwplotka <bwplotka@gmail.com> Co-authored-by: bwplotka <bwplotka@gmail.com>	2 years ago
Filip Petkovski	10a82f87fd	Enable reusing memory when converting between histogram types The 'ToFloat' method on integer histograms currently allocates new memory each time it is called. This commit adds an optional *FloatHistogram parameter that can be used to reuse span and bucket slices. It is up to the caller to make sure the input float histogram is not used anymore after the call. Signed-off-by: Filip Petkovski <filip.petkovsky@gmail.com>	2 years ago
Matthieu MOREL	9c4782f1cc	golangci-lint: enable testifylint linter (#13254 ) Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
Ziqi Zhao	19ecc5dd94	add test case for bigGap Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	2 years ago
Bryan Boreham	3e287e0170	Scraping tests: refactor scrapeLoop creation Pull boilerplate code into a function. Where appropriate we set some config on the returned object. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	f0e1b592ab	Scraping: use slices.sort for exemplars The sort implementation using Go generics is used everywhere else in Prometheus. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Paulin Todev	0102425af1	Use only one scrapeMetrics object per test. (#13051 ) The scrape loop and scrape cache should use the same instance. This brings the tests' behavior more in line with production. Signed-off-by: Paulin Todev <paulin.todev@gmail.com>	2 years ago
Bryan Boreham	9051100aba	Scraping: share buffer pool across all scrapes Previously we had one per scrapePool, and one of those per configured scraping job. Each pool holds a few unused buffers, so sharing one across all scrapePools reduces total heap memory. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	34676a240e	scrape: consistent function names for metadata Too confusing to have `MetadataList` and `ListMetadata`, etc. I standardised on the ones which are in an interface. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Ziqi Zhao	8fe9250f7d	optimize the logic of break the loop of reducing resolution Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	2 years ago
Bryan Boreham	f095c33da1	scrape: simplify TargetsActive function Since everything was serialized on a single mutex, it's exactly the same if we process targets in sequence without starting goroutines. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Łukasz Mierzwa	870627fbed	Add enable_compression scrape config option Currently Prometheus will always request gzip compression from the target when sending scrape requests. HTTP compression does reduce the amount of bytes sent over the wire and so is often desirable. The downside of compression is that it requires extra resources - cpu & memory. This also affects the resource usage on the target since it has to compress the response before sending it to Prometheus. This change adds a new option to the scrape job configuration block: enable_compression. The default is true so it remains the same as current Prometheus behaviour. Setting this option to false allows users to disable compression between Prometheus and the scraped target, which will require more bandwidth but it lowers the resource usage of both Prometheus and the target. Fixes #12319. Signed-off-by: Łukasz Mierzwa <l.mierzwa@gmail.com>	2 years ago
zenador	32ee1b15de	Fix error on ingesting out-of-order exemplars (#13021 ) Fix and improve ingesting exemplars for native histograms. See code comment for a detailed explanation of the algorithm. Note that this changes the current behavior for all kind of samples slightly: We now allow exemplars with the same timestamp as during the last scrape if the value or the labels have changed. Also note that we now do not ingest exemplars without timestamps for native histograms anymore. Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: Björn Rabenstein <github@rabenste.in> --------- Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: zenador <zenador@users.noreply.github.com> Co-authored-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Co-authored-by: Björn Rabenstein <github@rabenste.in>	2 years ago
Ziqi Zhao	10ebeb0a62	rename lastSum -> lastCount && enrich test case with expectBucketCount and expectSchema Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	2 years ago
Ziqi Zhao	b94f32f6fa	automatically reduce resolution rather than fail scrape Signed-off-by: Ziqi Zhao <zhaoziqi9146@gmail.com>	2 years ago
Julien Pivotto	0fe34f6d78	Follow-up to #13060 : Add test to ensure staleness tracking This commit introduces an additional test in `scrape_test.go` to verify staleness tracking when `trackTimestampStaleness` is enabled. The new `TestScrapeLoopAppendStalenessIfTrackTimestampStaleness` function asserts that the scrape loop correctly appends staleness markers when necessary, reflecting the expected behavior with the feature flag turned on. The previous tests were only testing end of scrape staleness. Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>	2 years ago
Matthieu MOREL	fe057fc60d	use Go standard errors package Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	2 years ago
Matthieu MOREL	7eaefcf379	ci(lint): enable errorlint on scrape (#12923 ) Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com> Signed-off-by: Jesus Vazquez <jesusvazquez@users.noreply.github.com> Co-authored-by: Jesus Vazquez <jesusvazquez@users.noreply.github.com>	2 years ago
George Krajcsovits	e399395b01	Native histograms vs labels (#13005 ) * Document le and quantile label transition due to native histograms Fixes: #12984 For full explanation see the related issue. The le and quantile labels are formatted as float with trailing .0 for whole number values when native histograms is enabled, e.g. 10.0. This changes the resulting series in Prometheus if previously we scraped the whole number itself, e.g. 10 over the text format. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> --------- Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: George Krajcsovits <krajorama@users.noreply.github.com>	2 years ago
Julien Pivotto	fed6f81377	scrape: Added trackTimestampsStaleness configuration option Add the ability to track staleness when an explicit timestamp is set. Useful for cAdvisor. Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>	2 years ago
Julien Pivotto	84aadfc45b	scrape: Added trackTimestampsStaleness configuration option Add the ability to track staleness when an explicit timestamp is set. Useful for cAdvisor. Signed-off-by: Julien Pivotto <roidelapluie@o11y.eu>	2 years ago
Oleksandr Redko	fa90ca46e5	ci(lint): enable godot; append dot at the end of comments Signed-off-by: Oleksandr Redko <Oleksandr_Redko@epam.com>	2 years ago
Oleksandr Redko	8e5f0387a2	ci(lint): enable nolintlint and remove redundant comments (#12926 ) Signed-off-by: Oleksandr Redko <Oleksandr_Redko@epam.com>	2 years ago
Paulin Todev	5752050b42	Scrape metrics can now be registered with a non-default registry. * A registerer is passed to the scrape Manager, and all scrape metrics register with it. * For now the registry which we pass to the scrape Manager is still the global one. Signed-off-by: Paulin Todev <paulin.todev@gmail.com>	2 years ago
Bartlomiej Plotka	624b973ebf	Added ability to specify scrape protocols to accept during HTTP content type negotiation. (#12738 ) * Added ability to specify scrape protocols to accept during HTTP content type negotiation. This is done via new option in GlobalConfig and ScrapeConfig: "scrape_protocol" Signed-off-by: bwplotka <bwplotka@gmail.com> * Fixed readability and log message. Signed-off-by: bwplotka <bwplotka@gmail.com> --------- Signed-off-by: bwplotka <bwplotka@gmail.com>	2 years ago
Bryan Boreham	f6d9c84fde	scraping: delay creating buffer, to save memory (#12953 ) We don't need the buffer to read the response until the scrape http call returns; creating it earlier makes the buffer pool larger. I split `scrape()` into `scrape()` which returns with the http response, and `readResponse()` which decompresses and copies the data into the supplied buffer. This design was chosen to minimize impact on the logic. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	7c934ae18c	scraping: hoist labels variable to save garbage `lset` escapes to heap due to being passed through the text-parser interface, so we can reduce garbage by hoisting it out of the loop so only one allocation is done for every series in a scrape. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Goutham Veeramachaneni	86729d4d7b	Update exp package (#12650 )	2 years ago
Arve Knudsen	6daee89e5f	Add context argument to Querier.Select (#12660 ) Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>	2 years ago
György Krajcsovits	983c0c5e9d	Add missing buckets My previous proposal for a fix was wrong and also missed these. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	2 years ago
György Krajcsovits	2ae8c2bd3d	Set expected values in test The parsing doesn't seem to be perfect as I don't get all classic buckets possibly another bug found? Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	2 years ago
György Krajcsovits	2a781ec5ac	Replicate infinite loop in native-classic histogram scrape Enable scraping a native histogram with exemplars that leads to infinite loop. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	2 years ago
Bryan Boreham	611f50bb3d	scrape: retain all dropped targets when KeepDroppedTargets is zero This was a bug. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	627c99424b	scrape: extend TestDroppedTargetsList to check counts Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
Bryan Boreham	1e3fef6ab0	scraping: limit detail on dropped targets, to save memory (#12647 ) It's possible (quite common on Kubernetes) to have a service discovery return thousands of targets then drop most of them in relabel rules. The main place this data is used is to display in the web UI, where you don't want thousands of lines of display. The new limit is `keep_dropped_targets`, which defaults to 0 for backwards-compatibility. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	2 years ago
beorn7	536a487af4	scrape: Refactor names of float samples Continue to remove confusion that histogram samples are also samples and histogram values are also values etc. by renaming float values and float samples using the same schema as for histograms. Concretely: - result → resultFloats (corresponding to resultHistograms) - pendingResult → pendingFloats (corresponding to pendingHistograms) - rolledbackResult → rolledbackFloats (corresponding to rolledbackHistograms) - sample → floatSample (corresponding to histogramSample) This also order the fields in `collectResultAppender` more consistently. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
beorn7	0e3f35324b	scrape: Enable ingestion of multiple exemplars per sample This has become a requirement for native histograms, as a single histogram sample commonly has many buckets, so that providing many exemplars makes sense. Since OM text doesn't support native histograms yet, the test had to be expanded to also support protobuf test cases. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Bryan Boreham	5255bf06ad	Replace sort.Slice with faster slices.SortFunc The generic version is more efficient. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	3 years ago
Julius Volz	ac8abdaacd	Rename remaining jitterSeed -> offsetSeed variables (#12414 ) I had changed the naming from "jitter" to "offset" in: `cb045c0e4b` ...but I forgot to add this file to the commit to complete the renaming, doing that now. Signed-off-by: Julius Volz <julius.volz@gmail.com>	3 years ago
Julius Volz	cb045c0e4b	Fix wording from "jitterSeed" -> "offsetSeed" for server-wide scrape offsets In digital communication, "jitter" usually refers to how much a signal deviates from true periodicity, see https://en.wikipedia.org/wiki/Jitter. The way we are using the "jitterSeed" in Prometheus does not affect the true periodicity at all, but just introduces a constant phase shift (or offset) within the period. So it would be more correct and less confusing to call the "jitterSeed" an "offsetSeed" instead. Signed-off-by: Julius Volz <julius.volz@gmail.com>	3 years ago
beorn7	9e500345f3	textparse/scrape: Add option to scrape both classic and native histograms So far, if a target exposes a histogram with both classic and native buckets, a native-histogram enabled Prometheus would ignore the classic buckets. With the new scrape config option `scrape_classic_histograms` set, both buckets will be ingested, creating all the series of a classic histogram in parallel to the native histogram series. For example, a histogram `foo` would create a native histogram series `foo` and classic series called `foo_sum`, `foo_count`, and `foo_bucket`. This feature can be used in a migration strategy from classic to native histograms, where it is desired to have a transition period during which both native and classic histograms are present. Note that two bugs in classic histogram parsing were found and fixed as a byproduct of testing the new feature: 1. Series created from classic _gauge_ histograms didn't get the _sum/_count/_bucket prefix set. 2. Values of classic _float_ histograms weren't parsed properly. Signed-off-by: beorn7 <beorn@grafana.com>	3 years ago
Jeanette Tan	40240c9c1c	Update according to code review Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>	3 years ago
György Krajcsovits	19a4f314f5	Refactor testutil/protobuf.go into scrape package Renamed to clientprotobuf.go and added comments to indicate the intended usage. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com>	3 years ago
Russ Cox	28f5502828	scrape: fix two loop variable scoping bugs in test Consider code like: for i := 0; i < numTargets; i++ { stopFuncs = append(stopFuncs, func() { time.Sleep(i20time.Millisecond) }) } Because the loop variable i is shared by all closures, all the stopFuncs sleep for numTargets20 ms. If the i were made per-iteration, as we are considering for a future Go release, the stopFuncs would have sleep durations ranging from 0 to (numTargets-1)20 ms. Two tests had code like this and were checking that the aggregate sleep was at least numTargets20 ms ("at least as long as the last target slept"). This is only true today because i == numTarget during all the sleeps. To keep the code working even if the semantics of this loop change, this PR computes d := time.Duration((i+1)20) * time.Millisecond outside the closure (but inside the loop body), and then each closure has its own d. Now the sleeps range from 20 ms to numTargets*20 ms, keeping the test passing (and probably behaving closer to the intent of the test author). The failure being fixed can be reproduced by using the current Go development branch with GOEXPERIMENT=loopvar go test Signed-off-by: Russ Cox <rsc@golang.org>	3 years ago

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300 Commits (0e8a2e44a4c54f70d1de052d52bb1304148ddfa5)