1856 Commits (0db15efd50cbb4b6e29da4dbc121260d8f5949cb)

Author	SHA1	Message	Date
Ashwanth	b3e038c7a8	config_wrapper: Add support for named stores (#7946) ... Signed-off-by: Ashwanth Goli <iamashwanth@gmail.com> **What this PR does / why we need it**: This PR adds support for named stores which allows users to define multiple object store configurations for a storage type. Named stores can be referred to from other sections of the config similar to how provider type is being used `i.e aws, gcs...`. Named store reference should be of the format: `<store_type>.<key_name>` Below is an example configuration with two named stores defined for aws `store-1, store-2`. Schema config is referring to one of them as `aws.store-1` ``` storage_config: aws: endpoint: s3://common-bucket region: us-east1 access_key_id: abc123 secret_access_key: def789 named_stores: aws: store-1: endpoint: s3://foo-bucket region: us-west1 access_key_id: 123abc secret_access_key: 789def store-2: endpoint: s3://bar-bucket region: us-west2 access_key_id: 456def secret_access_key: 789abc schema_config: configs: - from: "2020-07-31" index: period: 24h prefix: loki_prod_index_ object_store: aws.store-1 schema: v11 store: boltdb-shipper ``` **Which issue(s) this PR fixes**: Fixes #7276 **Special notes for your reviewer**: Configuration defined in common storage config has no effect on the named stores. Common storage config only overrides storageConfig if it's not explicitly set - same behavior as before. This should be a non-intrusive change. Signed-off-by: Ashwanth Goli <iamashwanth@gmail.com>	2 years ago
Ashwanth	dbf09246d5	Avoid failing tests on gRPC server shutdown errors (#8060)	2 years ago
Ed Welch	2b66c6b126	Loki: add a 'since' query parameter for easier querying using relative time (#7964) ... Signed-off-by: Edward Welch <edward.welch@grafana.com> **What this PR does / why we need it**: logcli has a command line parameter called `since` which makes it easy to query logs relative to the current time, however this is some syntactic sugar used in logcli to calculate `start` and `end` query parameters for the query sent to Loki. This PR adds native support for a `since` query parameter to make it a little easier to consume the Loki query API without having to calculate precise start/end times with every request. This is useful if you are polling the Loki API from a third party app which doesn't let you easily build dynamic URL's and all you want to do is poll for say the last 3 hours of logs. **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Signed-off-by: Edward Welch <edward.welch@grafana.com> Co-authored-by: Owen Diehl <ow.diehl@gmail.com>	2 years ago
Aditya C S	a08a7324f4	fix(logql): fix caseinsensitive search in filter (#8037) ... **What this PR does / why we need it**: Fix caseinsensitive search in filter **Which issue(s) this PR fixes**: Fixes #7904 #7837 **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [x] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
李国忠	b4440911e0	[new feature] logql:support sort and sort_desc (#7989) ... **What this PR does / why we need it**: sort() sort(v instant-vector) returns vector elements sorted by their sample values, in ascending order. sort_desc() Same as sort, but sorts in descending order. ex: `sort(rate(({app=~"foo|bar"} |~".+bar")[1m])) without (app) ` prometheud doc: https://prometheus.io/docs/prometheus/latest/querying/functions/#sort **Which issue(s) this PR fixes**: Fixes #7933 **Special notes for your reviewer**: **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Co-authored-by: Owen Diehl <ow.diehl@gmail.com>	2 years ago
Sandeep Sukhani	24deb6ed3b	fix bugs in logs results caching and its tests (#7925) ... **What this PR does / why we need it**: When a logs query results in an empty response, we cache it to avoid doing that query again and respond straight away with an empty response. However, we cache a single entry per time split interval with the query itself to keep things simple. For example, if the time split config for tenant `A` is `30m`, then queries for intervals `10m`-`20m` and `21m`-`25m` would have the same cache key. Here is roughly how cache hit is handled: * If the new query is within the cached query bounds, return empty results * If the start of new query is before the start time of the cached query, do a query from `newQuery.Start` to `cachedQuery.Start` * If the response of last query is also empty, set `cachedQuery.Start` = `newQuery.Start` * If the end of new query is after the end time of the cached query, do a query from `cachedQuery.End` to `newQuery.Start` * If the response of last query is also empty, set `cachedQuery.End` = `newQuery.End` * If we have changes in `cachedQuery.Start/End`, update it in the cache. The problem here is when we do queries to fill the gap, we sometimes do queries for the range outside of what the user requested and respond back without reducing the response to what the user requested. For example, if the cached query is from `21m`-`25m` and the user query is from `10m`-`15m`, we will query for the whole gap i.e `10m`-`21m`. If there are logs from `15m`-`21m` in the response, we will unexpectedly send it back to the user. This PR takes care of this issue by extracting the data and sending back only the user's requested logs. I have also found the tests for logs results cache were incorrect. They heavily use [mergeLokiResponse](e2842c69c5/pkg/querier/queryrange/codec.go (L1014)) for building the test data, but they were not setting the `limit` in test queries which was causing `mergeLokiResponse` to send back empty results. This means were were always comparing two empty results, which would always be the same. This PR also takes care of fixing it, and relevant changes to correct the test. **Checklist** - [x] Tests updated - [x] `CHANGELOG.md` updated	2 years ago
Christian Simon	dad39f7ea6	Improve comments on sample timestamp validation errors (#8018) ... This has come up time and time again, I have tried to write it up a bit better in code first, I would also strongly suggest that we improve the error messaging and the documentation of this.	2 years ago
Christian Haudum	17577b4d47	Shut down query frontend gracefully (#7978) ... **What this PR does / why we need it**: This PR fixes a bug in the shutdown process of the query frontend. In order to shut down the frontend gracefully without cancelling any in-flight operations/sub-requests, the frontend service has to wait until all in-flight operations are finished. Only then its sub-services may be stopped. In order to control the deterministic order of the shutdown of the service and its child services, child services need to be started with their own context (not with their parent context). Otherwise, if the context of the frontend is cancelled, also the contexts of the child services are cancelled, leading to a parallel stopping of the parent and its child services. During the time of the shutdown, the `RoundTripGRCP` function still needs to accept any round-tripping requests. This is, because the frontend round tripper is wrapped into a query range tripper ware, which splits incoming (HTTP) query requests into multiple (gRPC) query requests if needed. **Which issue(s) this PR fixes**: This fixes a race condition where queries fail, because the query frontend shut down before the queriers that processed in-flight request could send the query response to the frontend. This manifested in an increased error rate of queries during restarts (rollouts) of the query frontend. **Special notes for your reviewer**: **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Signed-off-by: Danny Kopping <danny.kopping@grafana.com> Signed-off-by: Christian Haudum <christian.haudum@gmail.com> Co-authored-by: Danny Kopping <danny.kopping@grafana.com>	2 years ago
Michel Hollands	59eff5ca58	Add count to template functions (#7951) ... **What this PR does / why we need it**: Add a `count` template function to count occurrences of a substring. For example if `label="abc abd abc"` ``` {{ .label | count "abc" }} ``` would return 2. Signed-off-by: Michel Hollands <michel.hollands@grafana.com> Co-authored-by: Danny Kopping <dannykopping@gmail.com>	2 years ago
Ashwanth	dc5cc4c494	store: write overlapping chunks to multiple stores (#7988) ... Signed-off-by: Ashwanth Goli <iamashwanth@gmail.com> **What this PR does / why we need it**: When a chunk falls on the period boundary it should be written to both the stores as it gets referred to by the indexes on both sides. But we currently skip the writes for subsequent periods if the chunk is found in the cache. This PR ensures that overlapping chunks get written to both the stores **Which issue(s) this PR fixes**: Fixes #7847 **Special notes for your reviewer**: Downside of this approach is that we end up writing the overlapping chunk multiple times, once from each instance in the replica set. But these duplicate writes would be infrequent given this occurs only on schema changes **Checklist** - [X] Reviewed the `CONTRIBUTING.md` guide - [X] Tests updated - [x] `CHANGELOG.md` updated Signed-off-by: Ashwanth Goli <iamashwanth@gmail.com>	2 years ago
Christian Haudum	089ec1b05f	Fix various linter errors ... These changes have been generated using `make lint`. ```console $ golangci-lint --version golangci-lint has version 1.50.0 built from 704109c6 on 2022-10-04T10:25:07Z ``` Signed-off-by: Christian Haudum <christian.haudum@gmail.com>	2 years ago
Travis Patterson	92fca94bb5	Revert "Update Ingester Rate Calculations (#7652)" (#7991) ... This change was supposed to smooth out the per-second rate of streams so distributors could react more uniformly to streams with variable rates. In practice, it resulted in drastically more resource usage on distributors because `GetStreamRates` now responds with all streams on an ingester rather than only the streams seen in the last second. This change also didn't seem to affect sharding precision one way or another. If we'd still like to implement exponential smoothing for stream rates, it should be implemented in distributors to keep communication overhead to a minimum.	2 years ago
Susana Ferreira	d086c237df	Add missing period_config root block to doc generator (#7981) ... **What this PR does / why we need it**: Update doc generator tool to validate if slice element is a root block. Add missing `period_config` root block to doc generator tool. **Special notes for your reviewer**: **Checklist** - [ ] Documentation updated	2 years ago
Danny Kopping	a4f306399a	Add store & cache download statistics (#7982)	2 years ago
Travis Patterson	209b281593	Fix min and max aggregations when using instant queries. (#7957) ... Instant queries use the new `streamRangeVectorIterator` which has a new set of `aggregators`. Before, aggregations were based on the first point in the range to be aggregated. With `streamRangeVectorIterator`, points are instead treated one at a time. The aggregations were simply checking whether the value was less than the min or greater than the max without any initialization. This PR fixes these aggregations by initializing `min` or `max` to `math.Nan` so the first point is always considered.	2 years ago
Karsten Jeschkies	0f3eecd209	Show help tooltip on hover in sizing tool. (#7919)	2 years ago
Michel Hollands	5fe9c964db	Fix validation for pattern and rexexp parsers to they don't panic in query-frontend (#7926) ... Running the query `topk(10,sum by(namespace)(count_over_time({application="nginx", site!="eu-west-1-dev"} |= "/artifactory/" != "api" != "binarystore" | regexp `` [1d])))` causes a panic. This PR adds validation for regexp and pattern parsers at parse time. If they don't have a (valid) parameter an error will be returned. Signed-off-by: Michel Hollands <michel.hollands@grafana.com> Co-authored-by: Susana Ferreira <ssncferreira@gmail.com>	2 years ago
Susana Ferreira	86d33a4e4a	Add CI step to check generated documentation to check pipeline (#7938) ... **What this PR does / why we need it**: Follow up from PR: https://github.com/grafana/loki/pull/7916 to add a CI step to check if the configuration flag documentation file `doc/sources/configuration/_index.md` was generated successfully. Requirements: * CI `check` pipeline should fail if the documentation file is updated manually * CI `check` pipeline should fail if registration flags are changed in the code, but the documentation file is not generated. **Which issue(s) this PR fixes**: Fixes https://github.com/grafana/loki-private/issues/83 **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [x] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
Susana Ferreira	e07fe7c338	Deprecate CLI flag -ruler.wal-cleaer.period in favor of CLI flag -ruler.wal-cleaner.period (#7937) ... **What this PR does / why we need it**: Deprecate CLI flag `-ruler.wal-cleaer.period` in favor of CLI flag `-ruler.wal-cleaner.period`. **Which issue(s) this PR fixes**: Fixes https://github.com/grafana/loki/pull/7916#issuecomment-1348276269 and https://github.com/grafana/loki/pull/7916#discussion_r1047043534 **NOTE:** correctly registring the `ruler.wal-cleaner` configuration flags is not a breaking change and doesn't require an upgrade guide, because the ruler WAL cleaner initialization code already guarantees that the default values are used: c71620ae94/pkg/ruler/storage/cleaner/cleaner.go (L76-L101) **Special notes for your reviewer**: **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [ ] Tests updated - [x] `CHANGELOG.md` updated - [x] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
Kaviraj Kanagaraj	cbd6ec15ce	feat(logql): Supporting prettifying LogQL expressions (#7906) ... **What this PR does / why we need it**: Changes 1. Added `Pretty()` method to `Expr` interface. So that every expression would know how to render themselfs as pretty :) 2. Implemented `Pretty()` for every single LogQL expressions 3. Exposed `/api/v1/format_query` endpoint that takes `query` argument and returns formatted version. 4. Integerated into `logcli`. echo `'<query>' | logcli fmt` would format the query. Why? 1. Readability, helpful in debugging and **more importantly, to understand the execution flow** example **before** ``` quantile_over_time(0.99,{container="ingress-nginx",service="hosted-grafana"}| json| unwrap response_latency_seconds| __error__=""[1m]) by (cluster) ``` ``` sum(rate({job="loki", namespace="loki", cluster="loki-dev-us"} |= "err" [5m])) + sum(rate({job="loki-dev", namespace="loki", cluster="loki-dev-eu"}|logfmt | level != "info" [5m])) / sum(rate({job="loki-prod", namespace="loki", cluster="loki-prod-us"} |logfmt | level="error"[5m])) ``` ``` label_replace(rate({job="api-server",service="a:c"}|= "err" [5m]), "foo", "$1", "service", "(.*):.*") ``` **after** ``` quantile_over_time( 0.99, {container="ingress-nginx", service="hosted-grafana"} | json | unwrap response_latency_seconds | __error__="" [1m] ) by (cluster) ``` ``` sum( rate( {job="loki", namespace="loki", cluster="loki-dev-us"} |= "err" [5m] ) ) + sum( rate( {job="loki-dev", namespace="loki", cluster="loki-dev-eu"} | logfmt | level!="info" [5m] ) ) / sum( rate( {job="loki-prod", namespace="loki", cluster="loki-prod-us"} | logfmt | level="error" [5m] ) ) ``` ``` label_replace( rate({job="api-server", service="a:c"} |= "err"[5m]), "foo", "$1", "service", "(.*):.*" ) ``` You can find more examples in the `prettier_test.go` Future plans * Integerate into LogQL analyzer * Integrate into Grafana UI. **Which issue(s) this PR fixes**: Fixes # NA **Special notes for your reviewer**: This whole idea was inspired from last [PromCon lighting talk](https://youtu.be/pjkWzDVxWk4?t=24469) **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com> Co-authored-by: Christian Haudum <christian.haudum@gmail.com> Co-authored-by: Christian Simon <simon@swine.de>	2 years ago
Karsten Jeschkies	c71620ae94	Flush buffered logger on exit. (#7924) ... **What this PR does / why we need it**: I ran into this issue several times. No error logs were printed or no generated token for GEL. This is because crashing runs can be much faster than the flush period. **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
Irina	10b869c82e	Move to fork github.com/grafana/gomemcache (#7936)	2 years ago
Susana Ferreira	68a4d3271a	Fix documentation typos from #7916 (#7934) ... **What this PR does / why we need it**: Fix documentation typos from https://github.com/grafana/loki/pull/7916#pullrequestreview-1217192817 **Which issue(s) this PR fixes**: Fixes https://github.com/grafana/loki/pull/7916#pullrequestreview-1217192817 **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
Susana Ferreira	f93b91bfb5	Add configuration documentation generation tool (#7916) ... **What this PR does / why we need it**: Add a tool to generate configuration flags documentation based on the flags properties defined on registration on the code. This tool is based on the [Mimir doc generation tool](https://github.com/grafana/mimir/tree/main/tools/doc-generator) and adapted according to Loki configuration specifications. Prior to this PR, the configuration flags documentation was dispersed across two sources: * [_index.md](5550cd65ec/docs/sources/configuration/_index.md) * configuration flags registration in the code This meant that there was no single source of truth. In this PR, the previous `_index.md` file is replaced with the new file generated by the tool. The next step includes adding a CI step that validates if the _index.md file was generated according to the flags settings. This will be done in a follow-up PR. **NOTE:** this is not a documentation update PR. Apart from some minor typo fixes, the documentation changes on the code, were copied from the `_index.md` file. **Which issue(s) this PR fixes**: Fixes https://github.com/grafana/loki-private/issues/83 **Special notes for your reviewer**: Files: * [docs/sources/configuration/index.template](5550cd65ec/docs/sources/configuration/index.template): template used to generate the final configuration file * [/docs/sources/configuration/_index.md](c32e5d0acb/docs/sources/configuration/_index.md): file generated by tool * `loki/pkg` directory files updated with up-to-date documentation from `_index.md` file * [tools/doc-generator](5550cd65ec/tools/doc-generator) directory with documentation generation tool. **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md`	2 years ago
Trevor Whitney	f5fbfabd84	Add 3rd target (`backend`) to SSD/Scalable mode (#7650) ... **What this PR does / why we need it**: This adds a 3rd target to SSD/Scalable mode, as well as a config flag to run the legacy `read` mode from the original 2 target configuration in order to give people time to migrate before we remove this option in Loki 3.0 (hopefully). The 3rd target has the two major advantages: 1. Allows the read path to be run as a deployment and thus auto-scaled using our existing auto-scaling logic for queriers 2. Creates consistency with Mimir since they went with a 3 target model for their SSD deployment.	2 years ago
Maxim Ivanov	b773a7a3cf	promtail: ratelimiting by label (#7597) ... Limit stage can now takes optional `by_label_name` param, which tracks distinct values of that label and ratelimit entries independently. Log lines without expected label are not considered for ratelimiting and passed to the next pipeline stage.	2 years ago
Karsten Jeschkies	95ec710168	Introduce sizing tool to documentation page. (#7830) ... **What this PR does / why we need it**: The sizing tool should help to find a good cluster sizing when starting out with Loki. It's a dynamic form withing the documentation.  This pull request will be followed by help on hover. **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [x] Documentation added - [x] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Co-authored-by: Karsten Jeschkies <karste.jeschkies@grafana.com>	3 years ago
Sandeep Sukhani	e9c93cd0f5	consider range and offset in queries while looking for schema config for query sharding (#7880) ... **What this PR does / why we need it**: We disable query sharding when a query touches multiple schema configs since they might have different sharding factors and might handle sharding differently. This check was done purely on the start and end time of the query without considering `range` and `offset`, which would change the length of the actual data being queried. Besides being incorrect, it also causes us to fail queries when migrating between tsdb and non-tsdb stores since both handle query sharding differently. For e.g., if the prev schema is `boltdb-shipper` and starting today, `tsdb` index is being used, so if we do a query `sum(rate({foo="bar"}[24h])` even with start and end within `tsdb` range, we will fail the query with error `incompatible index shard` if dynamic sharding goes with shard factor other than `32`(default shard factor in ingester for inverted index). The reason being the `range` here is `24h` which causes us to process data from previous schema as well. This PR takes care of the issue by factoring in `range` and `offset` in the queries while looking for schema config for query sharding. **Checklist** - [x] `CHANGELOG.md` updated	3 years ago
Mohamed-Amine Bouqsimi	03a34db8eb	Fix alertmanager per tenant override config behavior (#7805) ... **Context:** #7359 implement multi tenancy for the alertmanager config. However, the behavior of the per-tenant alertmanager config is erroneous, as it tries to merge the global alertmanager config with the per-tenant config. This does not work because there is no way of knowing if certain values were set by the user or if they were undefined and have the default Golang zero value (typically booleans). This PR changes the behavior of the alertmanager config to override all the configuration instead of trying to merge the global config with the per-tenant config. It also applies default values when appropriate.	3 years ago
Dylan Guedes	2e496ddff2	Loki: Add one additional bucket to `rate_store_stream_shards` (#7856) ... **What this PR does / why we need it**: Add one additional bucket (value=1) to the `rate_store_stream_shards`. By jumping from 0 to 2 we can't distinguish between streams that were minimally sharded (shards=2) to non-sharded ones (shards=1).	3 years ago
Robert Fratto	85392a9728	Update Prometheus dependency to latest release (v2.40.4) (#7826) ... Closes #7811, which is needed for Grafana Agent to update to v2.40 and add support for native histograms. I did not add support for native histograms to Loki, sorry :)	3 years ago
Travis Patterson	a1e9e4cdd0	Revert "Make some stream shard metrics per-tenant (#7838)" (#7842) ... Because these metrics will be coming from each distributor, this is going to have an adverse impact on cardinality. Consider doing this with logging	3 years ago
Travis Patterson	96fc2abfff	Make some stream shard metrics per-tenant (#7838) ... This PR just adds tenant information so some of our per-stream-rate-limit metrics.	3 years ago
Christian Haudum	feaf9c3232	Log query string on retry alongside the error (#7834) ... **What this PR does / why we need it**: For better observability of query retries. Signed-off-by: Christian Haudum <christian.haudum@gmail.com>	3 years ago
Kaviraj Kanagaraj	25f4dda811	fix(memcached): use `default` branch avoid writing to closed chan (#7833) ... Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com> **What this PR does / why we need it**: Follow up to https://github.com/grafana/loki/pull/7817 This PR uses `default` branch instead of `inputCh <- work` to make sure we are writing to closed `inputCh`. Gist is, `default` run [only when none of the branch is ready](https://go.dev/tour/concurrency/6). which makes more sense rather than to have `inputCh <- work` (writing to closed channel on the branch condition) These can be explained by these two tiny snippets. * [with `default`](https://go.dev/play/p/-FspbTZd20I) * [without `default`](https://go.dev/play/p/Ag4WznOaEq0) **Which issue(s) this PR fixes**: Fixes #NA **Special notes for your reviewer**: We already have test `TestMemcached_fetchKeysBatched` to catch this behaviour. In fact this test caught this probabilistic behaviour in some CI failures. [here ](https://drone.grafana.net/grafana/loki/17853/3/4) and[ here](https://drone.grafana.net/grafana/loki/17854/3/4) Thanks @DylanGuedes for catching this CI failures. **Checklist** Signed-off-by: Kaviraj <kavirajkanagaraj@gmail.com>	3 years ago
Trevor Whitney	37b1c0fce0	guard against divide by 0 when splitting parallelism (#7831) ... **What this PR does / why we need it**: **Which issue(s) this PR fixes**: We saw a spike in divide by zero panics in the code introduced in #7769. I was able to reproduce this error via a test that calculates `WeightedParallelism` with a start that's after the end. Not sure if this is possible, but we definitely saw this happening in our ops environment, so something is causing it, and the fix should guard against it in any case. **Special notes for your reviewer**: **Checklist** - [X] Tests updated Co-authored-by: Sandeep Sukhani <sandeep.d.sukhani@gmail.com>	3 years ago
Travis Patterson	eb7fbfe0b4	Improve ratestore performance (#7810) ... This PR changes the Rate Store to use multi-level maps rather than `tenant+stream-fingerprint` key. Benchmarks: *old* ``` goos: linux goarch: amd64 pkg: github.com/grafana/loki/pkg/distributor cpu: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz BenchmarkRateStore-8 117 10420080 ns/op 3201761 B/op 200025 allocs/op PASS ok github.com/grafana/loki/pkg/distributor 14.646s ``` *new* ``` goos: linux goarch: amd64 pkg: github.com/grafana/loki/pkg/distributor cpu: 11th Gen Intel(R) Core(TM) i7-1165G7 @ 2.80GHz BenchmarkRateStore-8 320 3811906 ns/op 2660 B/op 26 allocs/op ``` *stats* ``` name old time/op new time/op delta RateStore-8 10.7ms ± 8% 4.1ms ± 8% -61.42% (p=0.000 n=10+10) name old alloc/op new alloc/op delta RateStore-8 3.20MB ± 0% 0.00MB ± 0% -99.92% (p=0.000 n=8+9) name old allocs/op new allocs/op delta RateStore-8 200k ± 0% 0k ± 0% -99.99% (p=0.000 n=9+10) ```	3 years ago
李国忠	63a57c7b5c	[bugfix] scheduler: Gracefully shutdown querier when using query-scheduler (#7735) ... **What this PR does / why we need it**: Gracefully shutdown querier when using query-scheduler This PR is an attempt to fix a bug that my loki cluster is unavailable for logql. The source code and ideas are from mimir of LGTM. Thanks mimir and pr author @pracucci **Which issue(s) this PR fixes**: Fixes #7722 **Special notes for your reviewer**: mimir PR https://github.com/grafana/mimir/pull/1756 https://github.com/grafana/mimir/pull/1767 **Checklist** - [x] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [x] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Co-authored-by: Karsten Jeschkies <k@jeschkies.xyz>	3 years ago
Kaviraj Kanagaraj	4efdc131be	fix(memcached): panic on `send on closed channel`. (#7817)	3 years ago
Christian Simon	2ff6f13c8b	Better error message for empty selector queries (#6936) ... This improves the error when an empty label selector is given: Before: ```sh-session # Before $ logcli query "{}" Error response from server: parse error at line 1, col 2: syntax error: unexpected }, expecting IDENTIFIER # After $ logcli query "{}" Error response from server: parse error : queries require at least one regexp or equality matcher that does not have an empty-compatible value. For instance, app=~".*" does not meet this requirement, but app=~".+" will ``` I fear that might have wider implications, so it would be great to get a lot of eyes on this. In theory I think we should remove the restriction on querying all log streams, but this should maybe discussed in a follow up PR 🙂 Co-authored-by: Karsten Jeschkies <karsten.jeschkies@grafana.com>	3 years ago
Sandeep Sukhani	89d81020ce	fix lint issues from PR 7804 (#7814) ... **What this PR does / why we need it**: I had enabled auto-merge in PR #7804, but somehow it still merged the PR without all the checks passing. This PR fixes the failing lint and tests.	3 years ago
Sandeep Sukhani	1410808ee9	use grpc for communicating with compactor for query time filtering of data requested for deletion (#7804) ... **What this PR does / why we need it**: Add grpc support to compactor for getting delete requests and gen number for query time filtering. Since these requests are internal to Loki, it would be good to use grpc instead of HTTP same as all the internal requests we do in Loki. I have added a new config for accepting the grpc address of the compactor. I tried having just the existing config and detecting if it is a grpc server, but it was hard to do it reliably, considering the different deployment modes we support. I think it is safe to keep it the same and eventually deprecate the existing config. **Checklist** - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated	3 years ago
Kaviraj Kanagaraj	30ddd77150	loki-canary: respect `useTLS` flag when `push` mode is enabled. (#7701) ... **What this PR does / why we need it**: Currently `useTLS` flag is ignored on the push writer. This PR consider that flag and adjust the schema (http -> https) when that flag is enabled. **Which issue(s) this PR fixes**: Fixes #7692 **Special notes for your reviewer**: **Checklist**	3 years ago
Josef Johansson	b05f4fced3	Remove hardwired '127.0.0.1' values in default addresses (#7784) ... While running all-in-one Loki instance, it's not possible to listen on anything other than IPv4 since compactor_address is then set to http://127.0.0.1. This enables listening on only IPv6. Also if frontend_address, scheduler_ring and scheduler_address is not set, the default value is to connect to '127.0.0.1:<grpc_listen_port>'. Which means that grpc_listen_address is ignored. **What this PR does / why we need it**: It's not possible to use compactor while using an all-in-one instance and listening to IPv6. Let's not ignore grpc_listen_address to not confuse users. **Special notes for your reviewer**: As noted in the first commit, the default behavior is changed from defaulting to `127.0.0.1` to `localhost`. Not sure how major that change is though. My /etc/hosts says ``` $ grep localhost /etc/hosts 127.0.0.1 localhost ``` Signed-off-by: Josef Johansson <josef@oderland.se>	3 years ago
Dylan Guedes	4567d01ac6	Loki: Add new sharding metrics (histogram based) (#7762) ... **What this PR does / why we need it**: Add histogram-version of two existing stream sharding metrics. The new metrics are: - `rate_store_stream_shards`: Will show us the distribution of shards reported by ingesters. This will help us on monitoring the number of shards we're dealing with. As of now we only have access to the max number of shards seen, which is helpful but not enough. - `rate_store_stream_rate_bytes`: Same as below: will help us understand the distribution of stream sizes instead of only showing us the max stream size seen.	3 years ago
李国忠	6d05ade6a8	[performance] metrics query: range vector support streaming agg when no overlap (#7380) ... metrics query: range vector support streaming agg when no overlap	3 years ago
Karsten Jeschkies	7ec51e8b9d	Log rule changes through API. (#7790) ... **What this PR does / why we need it**: This change should make it easier to detect changes to rules via the API. **Which issue(s) this PR fixes**: Fixes #7789 **Special notes for your reviewer**: **Checklist** - [ ] Reviewed the `CONTRIBUTING.md` guide - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` Co-authored-by: Christian Haudum <christian.haudum@gmail.com>	3 years ago
李国忠	720dfe0476	fifocache config is deprecated. use embedded-cache instead (#7800)	3 years ago
Travis Patterson	343e39f67b	Update Ingester Rate Calculations (#7652) ... - Use weighted moving average for rates - Keep Streams around until they are removed Previously, the rate calculator only kept the most recent second. This led to issues where bursty streams that didn't get pushes every second resulted in undersharding those streams	3 years ago
Danny Kopping	a63ad06509	Querier/Ruler: query blocker (#7785) ... Block malicious or expensive queries using a per-tenant runtime configuration.	3 years ago