Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

NOTE: As semantic versioning states all 0.y.z releases can contain breaking changes in API (flags, grpc API, any backward compatibility)

We use breaking word for marking changes that are not backward compatible (relates only to v0.y.z releases.)

Unreleased

Fixed

#2238 Ruler: Fixed Issue #2204 bug in alert queue signalling filled up queue and alerts were dropped
#2231 Bucket Web - Sort chunks by thanos.downsample.resolution for better grouping
#2254 Bucket: Fix metrics registered multiple times in bucket replicate
#2271 Bucket Web: Fixed Issue #2260 bucket passes null when storage is empty
#2339 Query: fix a bug where --store.unhealthy-timeout was never respected

Added

#2252 Query: add new --store-strict flag. More information available here.
#2265 Compactor: Add --wait-interval to specify compaction wait interval between consecutive compact runs when --wait enabled.
#2250 Compactor: Enable vertical compaction for offline deduplication (Experimental). Uses --deduplication.replica-label flag to specify the replica label to deduplicate on (Hidden). Please note that this uses a NAIVE algorithm for merging (no smart replica deduplication, just chaining samples together). This works well for deduplication of blocks with precisely the same samples like produced by Receiver replication. We plan to add a smarter algorithm in the following weeks.
#1714 Run the bucket web UI in the compact component when it is run as a long-lived process.
#2304 Store: Added max_item_size config option to memcached-based index cache. This should be set to the max item size configured in memcached (-I flag) in order to not waste network round-trips to cache items larger than the limit configured in memcached.
#2297 Store Gateway: Add --experimental.enable-index-cache-postings-compression flag to enable reencoding and compressing postings before storing them into cache. Compressed postings take about 10% of the original size.

Changed

#2136 breaking store, compact, bucket: schedule block deletion by adding deletion-mark.json. This adds a consistent way for multiple readers and writers to access object storage. Since there are no consistency guarantees provided by some Object Storage providers, this PR adds a consistent lock-free way of dealing with Object Storage irrespective of the choice of object storage. In order to achieve this co-ordination, blocks are not deleted directly. Instead, blocks are marked for deletion by uploading deletion-mark.json file for the block that was chosen to be deleted. This file contains unix time of when the block was marked for deletion. If you want to keep existing behavior, you should add --delete-delay=0s as a flag.
#2090 breaking Downsample command: the downsample command has moved as the thanos bucket sub-command, and cannot be called via thanos downsample any more.
#2294 store: optimizations for fetching postings. Queries using =~".*" matchers or negation matchers (!=... or !~...) benefit the most.
#2301 Ruler: initlialization fails with filepath bad pattern error and rule manager update error.
#2310 query: Report timespan 0 to 0 when discovering no stores.
#2330 store: index-header is no longer experimental. It is enabled by default for store Gateway. You can disable it with new hidden flag: --store.disable-index-header. --experimental.enable-index-header flag was removed.

v0.11.0 - 2020.03.02

Fixed

#2033 Minio-go: Fixed Issue #1494 support Web Identity providers for IAM credentials for AWS EKS.
#1985 Store Gateway: Fixed case where series entry is larger than 64KB in index.
#2051 Ruler: Fixed issue where ruler does not expose shipper metrics.
#2101 Ruler: Fixed bug where thanos_alert_sender_errors_total was not registered.
#1789 Store Gateway: Improve timeouts.
#2139 Properly handle SIGHUP for reloading.
#2040 UI: Fix URL of alerts in Ruler
#2033 Ruler: Fix tracing in Thanos Ruler

Added

#2003 Query: Support downsampling for /series.
#1952 Store Gateway: Implemented binary index header. This significantly reduces resource consumption (memory, CPU, net bandwidth) for startup and data loading processes as well as baseline memory. This means that adding more blocks into object storage, without querying them will use almost no resources. This, however, still means that querying large amounts of data will result in high spikes of memory and CPU use as before, due to simply fetching large amounts of metrics data. Since we fixed baseline, we are now focusing on query performance optimizations in separate initiatives. To enable experimental index-header mode run store with hidden experimental.enable-index-header flag.
#2009 Store Gateway: Minimum age of all blocks before they are being read. Set it to a safe value (e.g 30m) if your object storage is eventually consistent. GCS and S3 are (roughly) strongly consistent.
#1963 Mixin: Add Thanos Ruler alerts.
#1984 Query: Add cache-control header to not cache on error.
#1870 UI: Persist settings in query.
#1969 Sidecar: allow setting http connection pool size via flags.
#1967 Receive: Allow local TSDB compaction.
#1939 Ruler: Add TLS and authentication support for query endpoints with the --query.config and --query.config-file CLI flags. See documentation for further information.
#1982 Ruler: Add support for Alertmanager v2 API endpoints.
#2030 Query: Add thanos_proxy_store_empty_stream_responses_total metric for number of empty responses from stores.
#2049 Tracing: Support sampling on Elastic APM with new sample_rate setting.
#2008 Querier, Receiver, Sidecar, Store: Add gRPC health check endpoints.
#2145 Tracing: track query sent to prometheus via remote read api.
#1848 Ruler: Return error messages when trigger reload with http.
#2113 Bucket: Added thanos bucket replicate.

Changed

#1970 breaking Receive: Use gRPC for forwarding requests between peers. Note that existing values for the --receive.local-endpoint flag and the endpoints in the hashring configuration file must now specify the receive gRPC port and must be updated to be a simple host:port combination, e.g. 127.0.0.1:10901, rather than a full HTTP URL, e.g. http://127.0.0.1:10902/api/v1/receive.
#1933 Add a flag --tsdb.wal-compression to configure whether to enable tsdb wal compression in ruler and receiver.
#2021 Rename metric thanos_query_duplicated_store_address to thanos_query_duplicated_store_addresses_total and thanos_rule_duplicated_query_address to thanos_rule_duplicated_query_addresses_total.
#2166 Improve tooltip for bucket web UI.

v0.10.1 - 2020.01.24

Fixed

#2015 Sidecar: Querier /api/v1/series bug fixed when time range was ignored inside sidecar. The bug was noticeable for example when using Grafana template variables.
#2120 Bucket Web: Set state of status prober properly.

v0.10.0 - 2020.01.13

Fixed

#1919 Compactor: Fixed potential data loss when uploading older blocks, or upload taking long time while compactor is running.
#1937 Compactor: Improved synchronization of meta JSON files. Compactor now properly handles partial block uploads for all operation like retention apply, downsampling and compaction. Additionally:
- Removed thanos_compact_sync_meta_* metrics. Use thanos_blocks_meta_* metrics instead.
- Added thanos_consistency_delay_seconds and thanos_compactor_aborted_partial_uploads_deletion_attempts_total metrics.
#1936 Store: Improved synchronization of meta JSON files. Store now properly handles corrupted disk cache. Added meta.json sync metrics.
#1856 Receive: close DBReadOnly after flushing to fix a memory leak.
#1882 Receive: upload to object storage as 'receive' rather than 'sidecar'.
#1907 Store: Fixed the duration unit for the metric thanos_bucket_store_series_gate_duration_seconds.
#1931 Compact: Fixed the compactor successfully exiting when actually an error occurred while compacting a blocks group.
#1872 Ruler: /api/v1/rules now shows a properly formatted value
#1945 master container images are now built with Go 1.13
#1956 Ruler: now properly ignores duplicated query addresses
#1975 Store Gateway: fixed panic caused by memcached servers selector when there's 1 memcached node

Added

#1852 Add support for AWS_CONTAINER_CREDENTIALS_FULL_URI by upgrading to minio-go v6.0.44
#1854 Update Rule UI to support alerts count displaying and filtering.
#1838 Ruler: Add TLS and authentication support for Alertmanager with the --alertmanagers.config and --alertmanagers.config-file CLI flags. See documentation for further information.
#1838 Ruler: Add a new --alertmanagers.sd-dns-interval CLI option to specify the interval between DNS resolutions of Alertmanager hosts.
#1881 Store Gateway: memcached support for index cache. See documentation for further information.
#1904 Add a skip-chunks option in Store Series API to improve the response time of /api/v1/series endpoint.
#1910 Query: /api/v1/labels now understands POST - useful for sending bigger requests

Changed

#1947 Upgraded Prometheus dependencies to v2.15.2. This includes:
- Compactor: Significant reduction of memory footprint for compaction and downsampling process.
- Querier: Accepting spaces between time range and square bracket. e.g [ 5m]
- Querier: Improved PromQL parser performance.
#1833 --shipper.upload-compacted flag has been promoted to non hidden, non experimental state. More info available here.
#1867 Ruler: now sets a Thanos/$version User-Agent in requests
#1887 Service discovery now deduplicates targets between different target groups

v0.9.0 - 2019.12.03

Added

#1678 Add Lightstep as a tracing provider.
#1687 Add a new --grpc-grace-period CLI option to components which serve gRPC to set how long to wait until gRPC Server shuts down.
#1660 Sidecar: Add a new --prometheus.ready_timeout CLI option to the sidecar to set how long to wait until Prometheus starts up.
#1573 AliYun OSS object storage, see documents for further information.
#1680 Add a new --http-grace-period CLI option to components which serve HTTP to set how long to wait until HTTP Server shuts down.
#1712 Bucket: Rename flag on bucket web component from --listen to --http-address to match other components.
#1733 Compactor: New metric thanos_compactor_iterations_total on Thanos Compactor which shows the number of successful iterations.
#1758 Bucket: thanos bucket web now supports --web.external-prefix for proxying on a subpath.
#1770 Bucket: Add --web.prefix-header flags to allow for bucket UI to be accessible behind a reverse proxy.
#1668 Receiver: Added TLS options for both server and client remote write.

Fixed

#1656 Store Gateway: Store now starts metric and status probe HTTP server earlier in its start-up sequence. /-/healthy endpoint now starts to respond with success earlier. /metrics endpoint starts serving metrics earlier as well. Make sure to point your readiness probes to the /-/ready endpoint rather than /metrics.
#1669 Store Gateway: Fixed store sharding. Now it does not load excluded meta.jsons and load/fetch index-cache.json files.
#1670 Sidecar: Fixed un-ordered blocks upload. Sidecar now uploads the oldest blocks first.
#1568 Store Gateway: Store now retains the first raw value of a chunk during downsampling to avoid losing some counter resets that occur on an aggregation boundary.
#1751 Querier: Fixed labels for StoreUI
#1773 Ruler: Fixed the /api/v1/rules endpoint that returned 500 status code with failed to assert type of rule ... message.
#1770 Querier: Fixed --web.external-prefix 404s for static resources.
#1785 Ruler: The /api/v1/rules endpoints now returns the original rule filenames.
#1791 Ruler: Ruler now supports identical rule filenames in different directories.
#1562 Querier: Downsampling option now carries through URL.
#1675 Querier: Reduced resource usage while using certain queries like offset.
#1725 & #1718 Store Gateway: Per request memory improvements.

Changed

#1666 Compact: thanos_compact_group_compactions_total now counts block compactions, so operations that resulted in a compacted block. The old behaviour is now exposed by new metric: thanos_compact_group_compaction_runs_started_total and thanos_compact_group_compaction_runs_completed_total which counts compaction runs overall.
#1748 Updated all dependencies.
#1694 prober_ready and prober_healthy metrics are removed, for sake of status. Now status exposes same metric with a label, check. check can have "healty" or "ready" depending on status of the probe.
#1790 Ruler: Fixes subqueries support for ruler.
#1769 & #1545 Adjusted most of the metrics histogram buckets.

v0.8.1 - 2019.10.14

Fixed

#1632 Removes the duplicated external labels detection on Thanos Querier; warning only; Made Store Gateway compatible with older Querier versions.
- NOTE: thanos_store_nodes_grpc_connections metric is now per external_labels and store_type. It is a recommended metric for Querier storeAPIs. thanos_store_node_info is marked as obsolete and will be removed in next release.
- NOTE2: Store Gateway is now advertising artificial: "@thanos_compatibility_store_type=store" label. This is to have the current Store Gateway compatible with Querier pre v0.8.0. This label can be disabled by hidden debug.advertise-compatibility-label=false flag on Store Gateway.

v0.8.0 - 2019.10.10

Lot's of improvements this release! Noteworthy items:

First Katacoda tutorial! 🐱
Fixed Deletion order causing Compactor to produce not needed 👻 blocks with missing random files.
Store GW memory improvements (more to come!).
Querier allows multiple deduplication labels.
Both Compactor and Store Gateway can be sharded within the same bucket using relabelling!
Sidecar exposed data from Prometheus can be now limited to given min-time (e.g 3h only).
Numerous Thanos Receive improvements.

Make sure you check out Prometheus 2.13.0 as well. New release drastically improves usage and resource consumption of both Prometheus and sidecar with Thanos: https://prometheus.io/blog/2019/10/10/remote-read-meets-streaming/

Added

#1619 Thanos sidecar allows to limit min time range for data it exposes from Prometheus.
#1583 Thanos sharding:
- Add relabel config (--selector.relabel-config-file and selector.relabel-config) into Thanos Store and Compact components. Selecting blocks to serve depends on the result of block labels relabeling.
- For store gateway, advertise labels from "approved" blocks.
#1540 Thanos Downsample added /-/ready and /-/healthy endpoints.
#1538 Thanos Rule added /-/ready and /-/healthy endpoints.
#1537 Thanos Receive added /-/ready and /-/healthy endpoints.
#1460 Thanos Store Added /-/ready and /-/healthy endpoints.
#1534 Thanos Query Added /-/ready and /-/healthy endpoints.
#1533 Thanos inspect now supports the timeout flag.
#1496 Thanos Receive now supports setting block duration.
#1362 Optional replicaLabels param for /query and /query_range querier endpoints. When provided overwrite the query.replica-label cli flags.
#1482 Thanos now supports Elastic APM as tracing provider.
#1612 Thanos Rule added resendDelay flag.
#1480 Thanos Receive flushes storage on hashring change.
#1613 Thanos Receive now traces forwarded requests.

Changed

#1362 query.replica-label configuration can be provided more than once for multiple deduplication labels like: --query.replica-label=prometheus_replica --query.replica-label=service.
#1581 Thanos Store now can use smaller buffer sizes for Bytes pool; reducing memory for some requests.
#1622 & #1590 Upgraded to Go 1.13.1
#1498 Thanos Receive change flag labels to label to be consistent with other commands.

Fixed

#1525 Thanos now deletes block's file in correct order allowing to detect partial blocks without problems.
#1505 Thanos Store now removes invalid local cache blocks.
#1587 Thanos Sidecar cleanups all cache dirs after each compaction run.
#1582 Thanos Rule correctly parses Alertmanager URL if there is more + in it.
#1544 Iterating over object store is resilient to the edge case for some providers.
#1469 Fixed Azure potential failures (EOF) when requesting more data then blob has.
#1512 Thanos Store fixed memory leak for chunk pool.
#1488 Thanos Rule now now correctly links to query URL from rules and alerts.

v0.7.0 - 2019.09.02

Accepted into CNCF:

Thanos moved to new repository https://github.com/thanos-io/thanos
Docker images moved to https://quay.io/thanos/thanos and mirrored at https://hub.docker.com/r/thanosio/thanos
Slack moved to https://slack.cncf.io #thanos/#thanos-dev/#thanos-prs

Added

#1478 Thanos components now exposes gRPC server metrics as soon as server starts, to provide more reliable data for instrumentation.
#1378 Thanos Receive now exposes thanos_receive_config_hash, thanos_receive_config_last_reload_successful and thanos_receive_config_last_reload_success_timestamp_seconds metrics to track latest configuration change
#1268 Thanos Sidecar added support for newest Prometheus streaming remote read added here. This massively improves memory required by single request for both Prometheus and sidecar. Single requests now should take constant amount of memory on sidecar, so resource consumption prediction is now straightforward. This will be used if you have Prometheus 2.13 or 2.12-master.
#1358 Added part_size configuration option for HTTP multipart requests minimum part size for S3 storage type
#1363 Thanos Receive now exposes thanos_receive_hashring_nodes and thanos_receive_hashring_tenants metrics to monitor status of hash-rings
#1395 Thanos Sidecar added /-/ready and /-/healthy endpoints to Thanos sidecar.
#1297 Thanos Compact added /-/ready and /-/healthy endpoints to Thanos compact.
#1431 Thanos Query added hidden flag to allow the use of downsampled resolution data for instant queries.
#1408 Thanos Store Gateway can now allow the specifying of supported time ranges it will serve (time sharding). Flags: min-time & max-time

Changed

#1414 Upgraded important dependencies: Prometheus to 2.12-rc.0. TSDB is now part of Prometheus.
#1380 Upgraded important dependencies: Prometheus to 2.11.1 and TSDB to 0.9.1. Some changes affecting Querier:
- [ENHANCEMENT] Query performance improvement: Efficient iteration and search in HashForLabels and HashWithoutLabels. #5707
- [ENHANCEMENT] Optimize queries using regexp for set lookups. tsdb#602
- [BUGFIX] prometheus_tsdb_compactions_failed_total is now incremented on any compaction failure. tsdb#613
- [BUGFIX] PromQL: Correctly display {name="a"}.
#1338 Thanos Query still warns on store API duplicate, but allows a single one from duplicated set. This is gracefully warn about the problematic logic and not disrupt immediately.
#1385 Thanos Compact exposes flag to disable downsampling downsampling.disable.

Fixed

#1327 Thanos Query /series API end-point now properly returns an empty array just like Prometheus if there are no results
#1302 Thanos now efficiently reuses HTTP keep-alive connections
#1371 Thanos Receive fixed race condition in hashring
#1430 Thanos fixed value of GOMAXPROCS inside container.
#1410 Fix for CVE-2019-10215

Deprecated

#1458 Thanos Query and Receive now use common instrumentation middleware. As as result, for sake of http_requests_total and http_request_duration_seconds_bucket; Thanos Query no longer exposes thanos_query_api_instant_query_duration_seconds, thanos_query_api_range_query_duration_second metrics and Thanos Receive no longer exposes thanos_http_request_duration_seconds, thanos_http_requests_total, thanos_http_response_size_bytes.
#1423 Thanos Bench deprecated.

v0.6.0 - 2019.07.18

Added

#1097 Added thanos check rules linter for Thanos rule rules files.
#1253 Add support for specifying a maximum amount of retries when using Azure Blob storage (default: no retries).
#1244 Thanos Compact now exposes new metrics thanos_compact_downsample_total and thanos_compact_downsample_failures_total which are useful to catch when errors happen
#1260 Thanos Query/Rule now exposes metrics thanos_querier_store_apis_dns_provider_results and thanos_ruler_query_apis_dns_provider_results which tell how many addresses were configured and how many were actually discovered respectively
#1248 Add a web UI to show the state of remote storage.
#1217 Thanos Receive gained basic hashring support
#1262 Thanos Receive got a new metric thanos_http_requests_total which shows how many requests were handled by it
#1243 Thanos Receive got an ability to forward time series data between nodes. Now you can pass the hashring configuration via --receive.hashrings-file; the refresh interval --receive.hashrings-file-refresh-interval; the name of the local node's name --receive.local-endpoint; and finally the header's name which is used to determine the tenant --receive.tenant-header.
#1147 Support for the Jaeger tracer has been added!

breaking New common flags were added for configuring tracing: --tracing.config-file and --tracing.config. You can either pass a file to Thanos with the tracing configuration or pass it in the command line itself. Old --gcloudtrace.* flags were removed ⚠️

To migrate over the old --gcloudtrace.* configuration, your tracing configuration should look like this:

---
type: STACKDRIVER
config:
- service_name: 'foo'
  project_id: '123'
  sample_factor: 123

The other type you can use is JAEGER now. The config keys and values are Jaeger specific and you can find all of the information here.

Changed

#1284 Add support for multiple label-sets in Info gRPC service. This deprecates the single Labels slice of the InfoResponse, in a future release backward compatible handling for the single set of Labels will be removed. Upgrading to v0.6.0 or higher is advised. breaking If you run have duplicate queries in your Querier configuration with hierarchical federation of multiple Queries this PR makes Thanos Querier to detect this case and block all duplicates. Refer to 0.6.1 which at least allows for single replica to work.
#1314 Removes http_request_duration_microseconds (Summary) and adds http_request_duration_seconds (Histogram) from http server instrumentation used in Thanos APIs and UIs.
#1287 Sidecar now waits on Prometheus' external labels before starting the uploading process
#1261 Thanos Receive now exposes metrics thanos_http_request_duration_seconds and thanos_http_response_size_bytes properly of each handler
#1274 Iteration limit has been lifted from the LRU cache so there should be no more spam of error messages as they were harmless
#1321 Thanos Query now fails early on a query which only uses external labels - this improves clarity in certain situations

Fixed

#1227 Some context handling issues were fixed in Thanos Compact; some unnecessary memory allocations were removed in the hot path of Thanos Store.
#1183 Compactor now correctly propagates retriable/haltable errors which means that it will not unnecessarily restart if such an error occurs
#1231 Receive now correctly handles SIGINT and closes without deadlocking
#1278 Fixed inflated values problem with sum() on Thanos Query
#1280 Fixed a problem with concurrent writes to a map in Thanos Query while rendering the UI
#1311 Fixed occasional panics in Compact and Store when using Azure Blob cloud storage caused by lack of error checking in client library.
#1322 Removed duplicated closing of the gRPC listener - this gets rid of harmless messages like store gRPC listener: close tcp 0.0.0.0:10901: use of closed network connection when those programs are being closed

Deprecated

#1216 the old "Command-line flags" has been removed from Thanos Query UI since it was not populated and because we are striving for consistency

v0.5.0 - 2019.06.05

TL;DR: Store LRU cache is no longer leaking, Upgraded Thanos UI to Prometheus 2.9, Fixed auto-downsampling, Moved to Go 1.12.5 and more.

This version moved tarballs to Golang 1.12.5 from 1.11 as well, so same warning applies if you use container_memory_usage_bytes from cadvisor. Use container_memory_working_set_bytes instead.

breaking As announced couple of times this release also removes gossip with all configuration flags (--cluster.*).

Fixed

#1142 fixed major leak on store LRU cache for index items (postings and series).
#1163 sidecar is no longer blocking for custom Prometheus versions/builds. It only checks if flags return non 404, then it performs optional checks.
#1146 store/bucket: make getFor() work with interleaved resolutions.
#1157 querier correctly handles duplicated stores when some store changes external labels in place.

Added

#1094 Allow configuring the response header timeout for the S3 client.

Changed

#1118 breaking swift: Added support for cross-domain authentication by introducing userDomainID, userDomainName, projectDomainID, projectDomainName. The outdated terms tenantID, tenantName are deprecated and have been replaced by projectID, projectName.
#1066 Upgrade Thanos ui to Prometheus v2.9.1.

Changes from the upstream:
- query:
  - [ENHANCEMENT] Update moment.js and moment-timezone.js PR #4679
  - [ENHANCEMENT] Support to query elements by a specific time PR #4764
  - [ENHANCEMENT] Update to Bootstrap 4.1.3 PR #5192
  - [BUGFIX] Limit number of merics in prometheus UI PR #5139
  - [BUGFIX] Web interface Quality of Life improvements PR #5201
- rule:
  - [ENHANCEMENT] Improve rule views by wrapping lines PR #4702
  - [ENHANCEMENT] Show rule evaluation errors on rules page PR #4457
#1156 Moved CI and docker multistage to Golang 1.12.5 for latest mem alloc improvements.
#1103 Updated go-cos deps. (COS bucket client).
#1149 Updated google Golang API deps (GCS bucket client).
#1190 Updated minio deps (S3 bucket client). This fixes minio retries.
#1133 Use prometheus v2.9.2, common v0.4.0 & tsdb v0.8.0.

Changes from the upstreams:
- store gateway:
  - [ENHANCEMENT] Fast path for EmptyPostings cases in Merge, Intersect and Without.
- store gateway & compactor:
  - [BUGFIX] Fix fd and vm_area leak on error path in chunks.NewDirReader.
  - [BUGFIX] Fix fd and vm_area leak on error path in index.NewFileReader.
- query:
  - [BUGFIX] Make sure subquery range is taken into account for selection #5467
  - [ENHANCEMENT] Check for cancellation on every step of a range evaluation. #5131
  - [BUGFIX] Exponentation operator to drop metric name in result of operation. #5329
  - [BUGFIX] Fix output sample values for scalar-to-vector comparison operations. #5454
- rule:
  - [BUGFIX] Reload rules: copy state on both name and labels. #5368

Deprecated

#1008 breaking Removed Gossip implementation. All --cluster.* flags removed and Thanos will error out if any is provided.

v0.4.0 - 2019.05.3

⚠️ IMPORTANT ⚠️ This is the last release that supports gossip. From Thanos v0.5.0, gossip will be completely removed.

This release also disables gossip mode by default for all components. See this for more details.

⚠️ This release moves Thanos docker images (NOT artifacts by accident) to Golang 1.12. This release includes change in GC's memory release which gives following effect (source: https://golang.org/doc/go1.12):

On Linux, the runtime now uses MADV_FREE to release unused memory. This is more efficient but may result in higher reported RSS. The kernel will reclaim the unused data when it is needed. To revert to the Go 1.11 behavior (MADV_DONTNEED), set the environment variable GODEBUG=madvdontneed=1.

If you want to see exact memory allocation of Thanos process:

Use go_memstats_heap_alloc_bytes metric exposed by Golang or container_memory_working_set_bytes exposed by cadvisor.
Add GODEBUG=madvdontneed=1 before running Thanos binary to revert to memory releasing to pre 1.12 logic.

Using cadvisor container_memory_usage_bytes metric could be misleading e.g: google/cadvisor#2242

Added

thanos.io website & automation 🎉
#1053 compactor: Compactor & store gateway now handles incomplete uploads gracefully. Added hard limit on how long block upload can take (30m).
#811 Remote write receiver component ❤️ ❤️ thanks to RedHat (@brancz) contribution.
#910 Query's stores UI page is now sorted by type and old DNS or File SD stores are removed after 5 minutes (configurable via the new --store.unhealthy-timeout=5m flag).
#905 Thanos support for Query API: /api/v1/labels. Notice that the API was added in Prometheus v2.6.
#798 Ability to limit the maximum number of concurrent request to Series() calls in Thanos Store and the maximum amount of samples we handle.
#1060 Allow specifying region attribute in S3 storage configuration

⚠️ WARNING ⚠️ #798 adds a new default limit to Thanos Store: --store.grpc.series-max-concurrency. Most likely you will want to make it the same as --query.max-concurrent on Thanos Query.

New options:

New Store flags:

* `--store.grpc.series-sample-limit` limits the amount of samples that might be retrieved on a single Series() call. By default it is 0. Consider enabling it by setting it to more than 0 if you are running on limited resources.
* `--store.grpc.series-max-concurrency` limits the number of concurrent Series() calls in Thanos Store. By default it is 20. Considering making it lower or bigger depending on the scale of your deployment.

New Store metrics:

* `thanos_bucket_store_queries_dropped_total` shows how many queries were dropped due to the samples limit;
* `thanos_bucket_store_queries_concurrent_max` is a constant metric which shows how many Series() calls can concurrently be executed by Thanos Store;
* `thanos_bucket_store_queries_in_flight` shows how many queries are currently "in flight" i.e. they are being executed;
* `thanos_bucket_store_gate_duration_seconds` shows how many seconds it took for queries to pass through the gate in both cases - when that fails and when it does not.

New Store tracing span: * store_query_gate_ismyturn shows how long it took for a query to pass (or not) through the gate.

#1016 Added option for another DNS resolver (miekg/dns client). Note that this is required to have SRV resolution working on Golang 1.11+ with KubeDNS below v1.14

New Querier and Ruler flag: -- store.sd-dns-resolver which allows to specify resolver to use. Either golang or miekgdns
#986 Allow to save some startup & sync time in store gateway as it is no longer needed to compute index-cache from block index on its own for larger blocks. The store Gateway still can do it, but it first checks bucket if there is index-cached uploaded already. In the same time, compactor precomputes the index cache file on every compaction.

New Compactor flag: --index.generate-missing-cache-file was added to allow quicker addition of index cache files. If enabled it precomputes missing files on compactor startup. Note that it will take time and it's only one-off step per bucket.
#887 Compact: Added new --block-sync-concurrency flag, which allows you to configure number of goroutines to use when syncing block metadata from object storage.
#928 Query: Added --store.response-timeout flag. If a Store doesn't send any data in this specified duration then a Store will be ignored and partial data will be returned if it's enabled. 0 disables timeout.
#893 S3 storage backend has graduated to stable maturity level.
#936 Azure storage backend has graduated to stable maturity level.
#937 S3: added trace functionality. You can add trace.enable: true to enable the minio client's verbose logging.
#953 Compact: now has a hidden flag --debug.accept-malformed-index. Compaction index verification will ignore out of order label names.
#963 GCS: added possibility to inline ServiceAccount into GCS config.
#1010 Compact: added new flag --compact.concurrency. Number of goroutines to use when compacting groups.
#1028 Query: added --query.default-evaluation-interval, which sets default evaluation interval for sub queries.
#980 Ability to override Azure storage endpoint for other regions (China)
#1021 Query API series now supports POST method.
#939 Query API query_range now supports POST method.

Changed

#970 Deprecated partial_response_disabled proto field. Added partial_response_strategy instead. Both in gRPC and Query API. No PartialResponseStrategy field for RuleGroups by default means abort strategy (old PartialResponse disabled) as this is recommended option for Rules and alerts.

Metrics:
- Added thanos_rule_evaluation_with_warnings_total to Ruler.
- DNS thanos_ruler_query_apis* are now thanos_ruler_query_apis_* for consistency.
- DNS thanos_querier_store_apis* are now thanos_querier_store_apis__* for consistency.
- Query Gate thanos_bucket_store_series* are now thanos_bucket_store_series_* for consistency.
- Most of thanos ruler metris related to rule manager has strategy label.
Ruler tracing spans:
- /rule_instant_query HTTP[client] is now /rule_instant_query_part_resp_abort HTTP[client]" if request is for abort strategy.
#1009: Upgraded Prometheus (~v2.7.0-rc.0 to v2.8.1) and TSDB (v0.4.0 to v0.6.1) deps.

Changes that affects Thanos:
- query:
  - [ENHANCEMENT] In histogram_quantile merge buckets with equivalent le values. #5158.
  - [ENHANCEMENT] Show list of offending labels in the error message in many-to-many scenarios. #5189
  - [BUGFIX] Fix panic when aggregator param is not a literal. #5290
- ruler:
  - [ENHANCEMENT] Reduce time that Alertmanagers are in flux when reloaded. #5126
  - [BUGFIX] prometheus_rule_group_last_evaluation_timestamp_seconds is now a unix timestamp. #5186
  - [BUGFIX] prometheus_rule_group_last_duration_seconds now reports seconds instead of nanoseconds. Fixes our issue #1027
  - [BUGFIX] Fix sorting of rule groups. #5260
- store: [ENHANCEMENT] Fast path for EmptyPostings cases in Merge, Intersect and Without.
- tooling: [FEATURE] New dump command to tsdb tool to dump all samples.
- compactor:
  - [ENHANCEMENT] When closing the db any running compaction will be cancelled so it doesn't block.
  - [CHANGE] breaking Renamed flag --sync-delay to --consistency-delay #1053
For ruler essentially whole TSDB CHANGELOG applies between v0.4.0-v0.6.1: https://github.com/prometheus/tsdb/blob/master/CHANGELOG.md

Note that this was added on TSDB and Prometheus: [FEATURE] Time-ovelapping blocks are now allowed. #370 Whoever due to nature of Thanos compaction (distributed systems), for safety reason this is disabled for Thanos compactor for now.
#868 Go has been updated to 1.12.
#1055 Gossip flags are now disabled by default and deprecated.
#964 repair: Repair process now sorts the series and labels within block.
#1073 Store: index cache for requests. It now calculates the size properly (includes slice header), has anti-deadlock safeguard and reports more metrics.

Fixed

#921 thanos_objstore_bucket_last_successful_upload_time now does not appear when no blocks have been uploaded so far.
#966 Bucket: verify no longer warns about overlapping blocks, that overlap 0s
#848 Compact: now correctly works with time series with duplicate labels.
#894 Thanos Rule: UI now correctly shows evaluation time.
#865 Query: now properly parses DNS SRV Service Discovery.
#889 Store: added safeguard against merging posting groups segfault
#941 Sidecar: added better handling of intermediate restarts.
#933 Query: Fixed 30 seconds lag of adding new store to query.
#962 Sidecar: Make config reloader file writes atomic.
#982 Query: now advertises Min & Max Time accordingly to the nodes.
#1041 Ruler is now able to return long time range queries.
#904 Compact: Skip compaction for blocks with no samples.
#1070 Downsampling works back again. Deferred closer errors are now properly captured.

v0.3.2 - 2019.03.04

Added

#851 New read API endpoint for api/v1/rules and api/v1/alerts.
#873 Store: fix set index cache LRU

⚠️ WARNING ⚠️ #873 fix fixes actual handling of index-cache-size. Handling of limit for this cache was broken so it was unbounded all the time. From this release actual value matters and is extremely low by default. To "revert" the old behaviour (no boundary), use a large enough value.

Fixed

#833 Store Gateway matcher regression for intersecting with empty posting.
#867 Fixed race condition in sidecare between reloader and shipper.

v0.3.1 - 2019.02.18

Fixed

#829 Store Gateway crashing due to slice bounds out of range.
#834 Store Gateway matcher regression for <> !=.

v0.3.0 - 2019.02.08

Added

Support for gzip compressed configuration files before envvar substitution for reloader package.
bucket inspect command for better insights on blocks in object storage.
Support for Tencent COS object storage.
Partial Response disable option for StoreAPI and QueryAPI.
Partial Response disable button on Thanos UI
We have initial docs for goDoc documentation!
Flags for Querier and Ruler UIs: --web.route-prefix, --web.external-prefix, --web.prefix-header. Details here

Fixed

#649 - Fixed store label values api to add also external label values.
#396 - Fixed sidecar logic for proxying series that has more than 2^16 samples from Prometheus.
#732 - Fixed S3 authentication sequence. You can see new sequence enumerated here
#745 - Fixed race conditions and edge cases for Thanos Querier fanout logic.
#651 - Fixed index cache when asked buffer size is bigger than cache max size.

Changed

#529 Massive improvement for compactor. Downsampling memory consumption was reduce to only store labels and single chunks per each series.
Qurerier UI: Store page now shows the store APIs per component type.
Prometheus and TSDB deps are now up to date with ~2.7.0 Prometheus version. Lot's of things has changed. See details here #704 Known changes that affects us:
- prometheus/prometheus/discovery/file
  - [ENHANCEMENT] Discovery: Improve performance of previously slow updates of changes of targets. #4526
  - [BUGFIX] Wait for service discovery to stop before exiting #4508 ??
- prometheus/prometheus/promql:
  - [ENHANCEMENT] Subqueries support. #4831
  - [BUGFIX] PromQL: Fix a goroutine leak in the lexer/parser. #4858
  - [BUGFIX] Change max/min over_time to handle NaNs properly. #438
  - [BUGFIX] Check label name for count_values PromQL function. #4585
  - [BUGFIX] Ensure that vectors and matrices do not contain identical label-sets. #4589
  - [ENHANCEMENT] Optimize PromQL aggregations #4248
  - [BUGFIX] Only add LookbackDelta to vector selectors #4399
  - [BUGFIX] Reduce floating point errors in stddev and related functions #4533
- prometheus/prometheus/rules:
  - New metrics exposed! (prometheus evaluation!)
  - [ENHANCEMENT] Rules: Error out at load time for invalid templates, rather than at evaluation time. #4537
- prometheus/tsdb/index: Index reader optimizations.
Thanos store gateway flag for sync concurrency (block-sync-concurrency with 20 default, so no change by default)
S3 provider:
- Added put_user_metadata option to config.
- Added insecure_skip_verify option to config.

Deprecated

Tests against Prometheus below v2.2.1. This does not mean lack of support for those. Only that we don't tests the compatibility anymore. See #758 for details.

v0.2.1 - 2018.12.27

Added

Relabel drop for Thanos Ruler to enable replica label drop and alert deduplication on AM side.
Query: Stores UI page available at /stores.

Fixed

Thanos Rule Alertmanager DNS SD bug.
DNS SD bug when having SRV results with different ports.
Move handling of HA alertmanagers to be the same as Prometheus.
Azure iteration implementation flaw.

v0.2.0 - 2018.12.10

Next Thanos release adding support to new discovery method, gRPC mTLS and two new object store providers (Swift and Azure).

Note lots of necessary breaking changes in flags that relates to bucket configuration.

Deprecated

breaking: Removed all bucket specific flags as we moved to config files:
- --gcs-bucket=<bucket>
- --s3.bucket=<bucket>
- --s3.endpoint=<api-url>
- --s3.access-key=<key>
- --s3.insecure
- --s3.signature-version2
- --s3.encrypt-sse
- --gcs-backup-bucket=<bucket>
- --s3-backup-bucket=<bucket>
breaking: Removed support of those environment variables for bucket:
- S3_BUCKET
- S3_ENDPOINT
- S3_ACCESS_KEY
- S3_INSECURE
- S3_SIGNATURE_VERSION2
breaking: Removed provider specific bucket metrics e.g thanos_objstore_gcs_bucket_operations_total in favor of of generic bucket operation metrics.

Changed

breaking: Added thanos_ prefix to memberlist (gossip) metrics. Make sure to update your dashboards and rules.
S3 provider:
- Set "X-Amz-Acl": "bucket-owner-full-control" metadata for s3 upload operation.

Added

Support for heterogeneous secure gRPC on StoreAPI.
Handling of scalar result in rule node evaluating rules.
Flag --objstore.config-file to reference to the bucket configuration file in yaml format. Detailed information can be found in document storage.
File service discovery for StoreAPIs:
In thanos rule, static configuration of query nodes via --query
In thanos rule, file based discovery of query nodes using --query.file-sd-config.files
In thanos query, file based discovery of store nodes using --store.file-sd-config.files
/-/healthy endpoint to Querier.
DNS service discovery to static and file based configurations using the dns+ and dnssrv+ prefixes for the respective lookup. Details here
--cluster.disable flag to disable gossip functionality completely.
Hidden flag to configure max compaction level.
Azure Storage.
OpenStack Swift support.
Thanos Ruler thanos_rule_loaded_rules metric.
Option for JSON logger format.

Fixed

Issue whereby the Proxy Store could end up in a deadlock if there were more than 9 stores being queried and all returned an error.
Ruler tracing causing panics.
GatherIndexStats panics on duplicated chunks check.
Clean up of old compact blocks on compact restart.
Sidecar too frequent Prometheus reload.
thanos_compactor_retries_total metric not being registered.

v0.1.0 - 2018.09.14

Initial version to have a stable reference before gossip protocol removal.

Added

Gossip layer for all components.
StoreAPI gRPC proto.
TSDB block upload logic for Sidecar.
StoreAPI logic for Sidecar.
Config and rule reloader logic for Sidecar.
On-the fly result merge and deduplication logic for Querier.
Custom Thanos UI (based mainly on Prometheus UI) for Querier.
Optimized object storage fetch logic for Store.
Index cache and chunk pool for Store for better memory usage.
Stable support for Google Cloud Storage object storage.
StoreAPI logic for Querier to support Thanos federation (experimental).
Support for S3 minio-based AWS object storage (experimental).
Compaction logic of blocks from multiple sources for Compactor.
Optional Compaction fixed retention.
Optional downsampling logic for Compactor (experimental).
Rule (including alerts) evaluation logic for Ruler.
Rule UI with hot rules reload.
StoreAPI logic for Ruler.
Basic metric orchestration for all components.
Verify commands with potential fixes (experimental).
Compact / Downsample offline commands.
Bucket commands.
Downsampling support for UI.
Grafana dashboards for Thanos components.

Files

CHANGELOG.md

Latest commit

History

CHANGELOG.md

File metadata and controls

Changelog

Unreleased

Fixed

Added

Changed

v0.11.0 - 2020.03.02

Fixed

Added

Changed

v0.10.1 - 2020.01.24

Fixed

v0.10.0 - 2020.01.13

Fixed

Added

Changed

v0.9.0 - 2019.12.03

Added

Fixed

Changed

v0.8.1 - 2019.10.14

Fixed

v0.8.0 - 2019.10.10

Added

Changed

Fixed

v0.7.0 - 2019.09.02

Added

Changed

Fixed

Deprecated

v0.6.0 - 2019.07.18

Added

Changed

Fixed

Deprecated

v0.5.0 - 2019.06.05

Fixed

Added

Changed

Deprecated

v0.4.0 - 2019.05.3

Added

Changed

Fixed

v0.3.2 - 2019.03.04

Added

Fixed

v0.3.1 - 2019.02.18

Fixed

v0.3.0 - 2019.02.08

Added

Fixed

Changed

Deprecated

v0.2.1 - 2018.12.27

Added

Fixed

v0.2.0 - 2018.12.10

Deprecated

Changed

Added

Fixed

v0.1.0 - 2018.09.14

Added