prometheus

Commit Graph

Author	SHA1	Message	Date
Julian Taylor	05442b31c8	register federation failure metrics (#7081 ) Closes gh-7080 Signed-off-by: Julian Taylor <juliantaylor108@gmail.com>	5 years ago
Bartlomiej Plotka	d5c33877f9	storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. (#7005 ) * storage: Added Chunks{Queryable/Querier/SeriesSet/Series/Iteratable. Added generic Merge{SeriesSet/Querier} implementation. ## Rationales: In many places (e.g. chunk Remote read, Thanos Receive fetching chunk from TSDB), we operate on encoded chunks not samples. This means that we unnecessary decode/encode, wasting CPU, time and memory. This PR adds chunk iterator interfaces and makes the merge code to be reused between both seriesSets I will make the use of it in following PR inside tsdb itself. For now fanout implements it and mergers. All merges now also allows passing series mergers. This opens doors for custom deduplications other than TSDB vertical ones (e.g. offline one we have in Thanos). ## Changes * Added Chunk versions of all iterating methods. It all starts in Querier/ChunkQuerier. The plan is that Storage will implement both chunked and samples. * Added Seek to chunks.Iterator interface for iterating over chunks. * NewMergeChunkQuerier was added; Both this and NewMergeQuerier are now using generigMergeQuerier to share the code. Generic code was added. * Improved tests. * Added some TODO for further simplifications in next PRs. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Brian's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Moved s/Labeled/SeriesLabels as per Krasi suggestion. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Addressed Krasi's comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Second iteration of Krasi comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com> * Another round of comments. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Bartlomiej Plotka	c4eefd1b3a	storage: Removed SelectSorted method; Simplified interface; Added requirement for remote read to sort response. This is technically BREAKING CHANGE, but it was like this from the beginning: I just notice that we rely in Prometheus on remote read being sorted. This is because we use selected data from remote reads in MergeSeriesSet which rely on sorting. I found during work on https://github.com/prometheus/prometheus/pull/5882 that we do so many repetitions because of this, for not good reason. I think I found a good balance between convenience and readability with just one method. Smaller the interface = better. Also I don't know what TestSelectSorted was testing, but now it's testing sorting. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Bartlomiej Plotka	fe802f29c9	storage: Removed SelectSorted method; Simplified interface; Added requirement for remote read to sort response. This is technically BREAKING CHANGE, but it was like this from the beginning: I just notice that we rely in Prometheus on remote read being sorted. This is because we use selected data from remote reads in MergeSeriesSet which rely on sorting. I found during work on https://github.com/prometheus/prometheus/pull/5882 that we do so many repetitions because of this, for not good reason. I think I found a good balance between convenience and readability with just one method. Smaller the interface = better. Also I don't know what TestSelectSorted was testing, but now it's testing sorting. Signed-off-by: Bartlomiej Plotka <bwplotka@gmail.com>	5 years ago
Tobias Guggenmos	20b1f596f6	Fix build errors in rest of prometheus Signed-off-by: Tobias Guggenmos <tguggenm@redhat.com>	5 years ago
Julien Pivotto	ff0003e072	Make lookbackDelta a option of QueryEngine (#6746 ) * Make lookbackDelta a option of QueryEngine Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * julius' suggestion Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * remove trivial getter Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * Assume lookback delta is always > 0 Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * add debug log Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * don't expose loopback delta Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * Specify that lookack delta is also used in federation Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * Fix federation test While we have added some logic to the promql engine to keep it backwards compatible and have a 5 minute loopback by default, the web/ package is likely to really be internal to Prometheus and we should not add the same kind of heuritstics here. Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu> * loopback delta: Fix debug log Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>	5 years ago
Simon Pasquier	45506841e6	*: enable all default linters (#5504 ) Signed-off-by: Simon Pasquier <spasquie@redhat.com>	6 years ago
Tom Wilkie	c7b3535997	Use pkg/relabelling in remote write. - Unmarshall external_labels config as labels.Labels, add tests. - Convert some more uses of model.LabelSet to labels.Labels. - Remove old relabel pkg (fixes #3647). - Validate external label names. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	6 years ago
Simon Pasquier	f678e27eb6	: use latest release of staticcheck (#5057 ) : use latest release of staticcheck It also fixes a couple of things in the code flagged by the additional checks. Signed-off-by: Simon Pasquier <spasquie@redhat.com> Use official release of staticcheck Also run 'go list' before staticcheck to avoid failures when downloading packages. Signed-off-by: Simon Pasquier <spasquie@redhat.com>	7 years ago
Tom Wilkie	6e08029b56	Move err to be the last return value from storage.Select. (#5054 ) Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	7 years ago
mknapphrt	f0e9196dca	Return warnings on a remote read fail (#4832 ) Signed-off-by: Mark Knapp <mknapp@hudson-trading.com>	7 years ago
Thomas Jackson	f0a1ebc19d	Add SelectParams to Select for federation (#4546 ) When prom2 came out the storage querier interface consolidated to a single Select() method. While doing this it makes it impossible as the implementer of the querier to know if you are being called for metadata or actual data. The workaround has been to check if the SelectParams are nil, which the federation call is always nil. This has 2 negative consequences (1) remote implementations interpret this as a metadata call, which makes the federation endpoint return nothing. (2) this means that the storage implementations don't get the same information passed down to them as far as SelectParams goes. This diff simply adds SelectParams to the Select() call in the federation handler Mitigation for #4057 Signed-off-by: Thomas Jackson <jacksontj.89@gmail.com>	7 years ago
Julius Volz	8fbe1b5133	Handle a bunch of unchecked errors (#4461 ) There are many more (mostly finalizers like Close/Stop/etc.), but most of the others seemed like one couldn't do much about them anyway. Signed-off-by: Julius Volz <julius.volz@gmail.com>	7 years ago
Alin Sinpalean	e3b775b78b	Simplify BufferedSeriesIterator usage (#4294 ) * Allow for BufferedSeriesIterator instances to be created without an underlying iterator, to simplify their usage. Signed-off-by: Alin Sinpalean <alin.sinpalean@gmail.com>	7 years ago
Fabian Reinartz	7ccd4b39b8	*: implement query params This adds a parameter to the storage selection interface which allows query engine(s) to pass information about the operations surrounding a data selection. This can for example be used by remote storage backends to infer the correct downsampling aggregates that need to be provided.	7 years ago
Ed Schouten	bb724f1bef	Deprecate DeduplicateSeriesSet() in favor of NewMergeSeriesSet(). Federation makes use of dedupedSeriesSet to merge SeriesSets for every query into one output stream. If many match[] arguments are provided, many dedupedSeriesSet objects will get chained. This has the downside of causing a potential O(nk) running time, where n is the number of series and k the number of match[] arguments. In the mean time, the storage package provides a mergeSeriesSet that accomplishes the same with an O(nlog(k)) running time by making use of a binary heap. Let's just get rid of dedupedSeriesSet and change all existing callers to use mergeSeriesSet.	8 years ago
Fabian Reinartz	83cd270ea4	*: adapt to storage interface changes	8 years ago
Julius Volz	f7e8348a88	Re-add contexts to storage.Storage.Querier() (#3230 ) * Re-add contexts to storage.Storage.Querier() These are needed when replacing the storage by a multi-tenant implementation where the tenant is stored in the context. The 1.x query interfaces already had contexts, but they got lost in 2.x. * Convert promql.Engine to use native contexts	8 years ago
Fabian Reinartz	d21f149745	*: migrate to go-kit/log	8 years ago
Max Leonard Inden	1c96fbb992	Expose current Prometheus config via /status/config This PR adds the `/status/config` endpoint which exposes the currently loaded Prometheus config. This is the same config that is displayed on `/config` in the UI in YAML format. The response payload looks like such: ``` { "status": "success", "data": { "yaml": <CONFIG> } } ```	8 years ago
Goutham Veeramachaneni	d407bd150c	Consolidate the duration params in CLI * All CLI params moved to model.Duration Signed-off-by: Goutham Veeramachaneni <cs14btech11014@iith.ac.in>	8 years ago
Brian Brazil	e5f94145b8	Drop series for federation if latest sample is stale.	8 years ago
Brian Brazil	220e78b9c3	Consider a series stale after 4.1 intervals with no data. To cover the cases where stale markers may not be available, we need to infer the interval and mark series stale based on that. As we're lacking stale markers this is less accurate, however it should be good enough for these cases. We need 4 intervals as if say we had data at t=0 and t=10, coming via federation. The next data point should be at t=20 however it could take up to t=30 for it actually to be ingested, t=40 for it to be scraped via federation and t=50 for it to be ingested. We then add 10% on to that for slack, as we do elsewhere.	8 years ago
Brian Brazil	c02c25d5ba	Allow peeking back further in buffer.	8 years ago
Fabian Reinartz	8c768f2ca3	web: Fix federation for instance label	8 years ago
Fabian Reinartz	bbcf20ba01	web: deduplicate series in federation	8 years ago
Brian Brazil	8cd5aff8fe	Send instance="" with federation if instance not set. This is needed for federating non-instance level metrics, so they don't end up with the instance label of the prometheus target. Also sort external labels, so label output order is consistent.	8 years ago
Brian Brazil	d42e01b07c	Sort labelnames for federation. This makes unittests with multiple labels possible, and may be needed for performance with the new ingestion text parser.	8 years ago
Fabian Reinartz	bc20d93f0a	storage: rename iterator value getters to At()	9 years ago
Fabian Reinartz	61bd698143	web: implement federation for new storage	9 years ago
Fabian Reinartz	f8fc1f5bb2	*: migrate ingestion to new batch Appender	9 years ago
Fabian Reinartz	5817cb5bde	: migrate from model. to promql.* types	9 years ago
Fabian Reinartz	cef2e04aa3	web: add error counter for federation responses	9 years ago
Fabian Reinartz	9d68e81b32	web: don't return federation errors over HTTP We are writing federation responses streaming. So after the first byte we wrote, the status header is fixed. We cannot return an HTTP error for intermediate error but should just abort and log instead.	9 years ago
Fabian Reinartz	8fa18d564a	storage: enhance Querier interface usage This extracts Querier as an instantiateable and closeable object rather than just defining extending methods of the storage interface. This improves composability and allows abstracting query transactions, which can be useful for transaction-level caches, consistent data views, and encapsulating teardown.	9 years ago
Julius Volz	c187308366	storage: Contextify storage interfaces. This is based on https://github.com/prometheus/prometheus/pull/1997. This adds contexts to the relevant Storage methods and already passes PromQL's new per-query context into the storage's query methods. The immediate motivation supporting multi-tenancy in Frankenstein, but this could also be used by Prometheus's normal local storage to support cancellations and timeouts at some point.	9 years ago
beorn7	39c4915401	federation: Collapse time series of the same name This will avoid duplicate MetricFamilies, thereby shrinking the size of the federation payload and also creating legal text format. Also, add unit tests for federation. They were also needed for the previous state of the code, but were missing.	9 years ago
Julius Volz	3bfec97d46	Make the storage interface higher-level. See discussion in https://groups.google.com/forum/#!topic/prometheus-developers/bkuGbVlvQ9g The main idea is that the user of a storage shouldn't have to deal with fingerprints anymore, and should not need to do an individual preload call for each metric. The storage interface needs to be made more high-level to not expose these details. This also makes it easier to reuse the same storage interface for remote storages later, as fewer roundtrips are required and the fingerprint concept doesn't work well across the network. NOTE: this deliberately gets rid of a small optimization in the old query Analyzer, where we dedupe instants and ranges for the same series. This should have a minor impact, as most queries do not have multiple selectors loading the same series (and at the same offset).	9 years ago
beorn7	836f1db04c	Improve MetricsForLabelMatchers WIP: This needs more tests. It now gets a from and through value, which it may opportunistically use to optimize the retrieval. With possible future range indices, this could be used in a very efficient way. This change merely applies some easy checks, which should nevertheless solve the use case of heavy rule evaluations on servers with a lot of series churn. Idea is the following: - Only archive series that are at least as old as the headChunkTimeout (which was already extremely unlikely to happen). - Then maintain a high watermark for the last archival, i.e. no archived series has a sample more recent than that watermark. - Any query that doesn't reach to a time before that watermark doesn't have to touch the archive index at all. (A production server at Soundcloud with the aforementioned series churn and heavy rule evaluations spends 50% of its CPU time in archive index lookups. Since rule evaluations usually only touch very recent values, most of those lookup should disappear with this change.) - Federation with a very broad label matcher will profit from this, too. As a byproduct, the un-needed MetricForFingerprint method was removed from the Storage interface.	9 years ago
beorn7	1e13f89039	Return SamplePair istead of *SamplePair consistently Formalize ZeroSamplePair as return value for non-existing samples. Change LastSamplePairForFingerprint to return a SamplePair (and not a pointer to it), which saves allocations in a potentially extremely frequent call.	9 years ago
Fabian Reinartz	b35e25a082	Don't federate stale samples	10 years ago
Julius Volz	dac26cef71	Rename global "labels" config option to "external_labels".	10 years ago
beorn7	ca63c05b4e	Fix creation of protobuf fields	10 years ago
Fabian Reinartz	9bbd9264e2	Add global labels to federation	10 years ago
Julius Volz	995d3b831d	Fix most golint warnings. This is with `golint -min_confidence=0.5`. I left several lint warnings untouched because they were either incorrect or I felt it was better not to change them at the moment.	10 years ago
Fabian Reinartz	d6b8da8d43	Switch promql types to common/model	10 years ago
Fabian Reinartz	d6d88f8950	Add missing license headers	10 years ago
Fabian Reinartz	47aa0d536c	Use common/expfmt in federation	10 years ago
Fabian Reinartz	306e8468a0	Switch from client_golang/model to common/model	10 years ago
Fabian Reinartz	39a8254963	web: add basic federation support. This commit adds a federation handler on /federate. It accepts `match[]` query parameters containing vector selectors. Their intersection determines the in-memory metrics that are returned in the same way as the /metrics endpoint does (modulo sorting).	10 years ago

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51 Commits (34c7f6e3c4db66b6f630b2ba55f84b13f50cbb21)