diff --git a/.gitignore b/.gitignore index af0730eb7fd..638227ff530 100644 --- a/.gitignore +++ b/.gitignore @@ -10,6 +10,7 @@ website/.hugo_build.lock website/public website/resources website/content/en/docs +website/static/diagrams e2e_integration_test* active-query-tracker dist/ diff --git a/CHANGELOG.md b/CHANGELOG.md index 4fe16f3a8bd..740ef55c728 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -54,6 +54,7 @@ * [ENHANCEMENT] Compactor: Reduce object storage GET calls when updating the bucket index by skipping re-reading parquet converter markers for blocks that already have a valid-version parquet entry in the previous index. #7669 * [ENHANCEMENT] Upgrade Thanos and promql-engine to latest. #7740 * [ENHANCEMENT] Ruler: Adjust ruler frontend decoder to not wrap query error messages with execution prefix, this makes error responses consistent between internal and external ruler paths. #7741 +* [ENHANCEMENT] Docs: Add an interactive architecture diagram at `/diagrams/cortex-architecture.html`, linked from the new Interactive Diagram documentation page. It replaces the static `images/architecture.png` embed in the architecture documentation and shows the protocol, endpoint, hash ring and source file behind each component and hop. #7769 * [BUGFIX] Querier: Fix queryWithRetry and labelsWithRetry returning (nil, nil) on cancelled context by propagating ctx.Err(). #7370 * [BUGFIX] Metrics Helper: Fix non-deterministic bucket order in merged histograms by sorting buckets after map iteration, matching Prometheus client library behavior. #7380 * [BUGFIX] Distributor: Return HTTP 401 Unauthorized when tenant ID resolution fails in the Prometheus Remote Write 2.0 path. #7389 diff --git a/VENDORED_CODE.md b/VENDORED_CODE.md index dd5991f7791..1a18f254224 100644 --- a/VENDORED_CODE.md +++ b/VENDORED_CODE.md @@ -16,3 +16,10 @@ in the ./vendor/ directory: [One file used in tests](COPYING.LGPL-3) is under LGPL-3, that's why we ship the license text in this repository. + +Outside of ./vendor/, [tools/diagram/d3.min.js](tools/diagram/d3.min.js) is an +unmodified copy of [D3](https://d3js.org/) 7.9.0, which is under the ISC license +(Copyright 2010-2023 Mike Bostock). It is vendored so the interactive +architecture diagram renders offline and the documentation site makes no +third-party request; see [tools/diagram/readme.md](tools/diagram/readme.md) for +its provenance. diff --git a/docs/architecture-diagram.md b/docs/architecture-diagram.md new file mode 100644 index 00000000000..65e8f552ded --- /dev/null +++ b/docs/architecture-diagram.md @@ -0,0 +1,34 @@ +--- +title: "Interactive Architecture Diagram" +linkTitle: "Interactive Diagram" +weight: 3 +slug: architecture-diagram +--- + +The [interactive architecture diagram](../tools/diagram/cortex-architecture.html) +draws the same system [Architecture](./architecture.md) describes in prose, with the +details attached to the picture instead of scattered through the text. It covers +the write path, the read path, the blocks lifecycle and the optional services — +ruler, alertmanager, compactor, store-gateway, query-scheduler and the caches. +Hover a connector and it names the protocol and the endpoint that hop actually +uses; select a component and it gives you the role, whether it is stateful, which +hash ring it joins, the endpoints it serves, its `-target` value and the file in +the Cortex tree that implements it. + +Three toggles cover the places where the topology genuinely forks, rather than +drawing one deployment and calling it typical: the query-frontend's own queue +versus a separate query-scheduler, the ruler evaluating rules in its own querier +stack versus delegating to the query-frontend with `-ruler.frontend-address`, and +the parquet queryable off versus on. There are also guided walkthroughs that step +through the write, read, rule-evaluation and blocks flows one hop at a time, a +table view of every component and flow, and a light/dark theme toggle. + +The diagram's metadata is hand-maintained against the Cortex source rather than +generated from it, so the `src` path shown in each component's panel is the +authority — if a ring key, prefix or endpoint disagrees with the code, the code is +right and the diagram needs fixing. It also deliberately shows a few things the +prose does not yet cover, such as the OTLP ingest endpoint and the +parquet-converter, which is marked experimental for that reason. Its source lives +in [`tools/diagram/`](https://github.com/cortexproject/cortex/tree/master/tools/diagram). + +**[Open the interactive architecture diagram →](../tools/diagram/cortex-architecture.html)** diff --git a/docs/architecture.md b/docs/architecture.md index b532d83239a..1b4f602a087 100644 --- a/docs/architecture.md +++ b/docs/architecture.md @@ -7,9 +7,7 @@ slug: architecture Cortex consists of multiple horizontally scalable microservices. Each microservice uses the most appropriate technique for horizontal scaling; most are stateless and can handle requests for any users while some (namely the [ingesters](#ingester)) are semi-stateful and depend on consistent hashing. This document provides a basic overview of Cortex's architecture. -The following diagram does not include all the Cortex services, but does represent a typical deployment topology. - -

Cortex Architecture

+The [interactive architecture diagram](./architecture-diagram.md) draws the same system, and does include the services this document leaves out. Hover a connector for the protocol and endpoint of that hop; select a component for its hash ring, endpoints and source file. ## The role of Prometheus diff --git a/docs/blocks-storage/_index.md b/docs/blocks-storage/_index.md index bcec5ae48b3..c67dcd755eb 100644 --- a/docs/blocks-storage/_index.md +++ b/docs/blocks-storage/_index.md @@ -1,7 +1,7 @@ --- title: "Blocks Storage" linkTitle: "Blocks Storage" -weight: 3 +weight: 4 menu: --- diff --git a/tools/diagram/cortex-architecture.html b/tools/diagram/cortex-architecture.html new file mode 100644 index 00000000000..d4bba2b7892 --- /dev/null +++ b/tools/diagram/cortex-architecture.html @@ -0,0 +1,1366 @@ + + + + + + +Cortex architecture — interactive diagram + + + + + + + + + + + + + +
+ +
+

Cortex architecture

+

+ The write path, read path and blocks lifecycle, as the code actually wires them up. + Hover a connector for its protocol and endpoint; select a component for its ring, + endpoints and source file. Nothing here is generated — the topology is + hand-maintained, so treat the source references in each panel as the authority. +

+
+ +
+
+ Show +
+
+ +
+ Query queue +
+ + +
+
+ +
+ Ruler evaluates via +
+ + +
+
+ +
+ Parquet queryable +
+ + +
+
+ +
+ Walk a flow +
+
+ +
+ View +
+ + + +
+
+
+ +
+
+ +
+ +
+ +
+ + + + +
+ + + + + + diff --git a/tools/diagram/d3.min.js b/tools/diagram/d3.min.js new file mode 100644 index 00000000000..33bb880268a --- /dev/null +++ b/tools/diagram/d3.min.js @@ -0,0 +1,2 @@ +// https://d3js.org v7.9.0 Copyright 2010-2023 Mike Bostock +!function(t,n){"object"==typeof exports&&"undefined"!=typeof module?n(exports):"function"==typeof define&&define.amd?define(["exports"],n):n((t="undefined"!=typeof globalThis?globalThis:t||self).d3=t.d3||{})}(this,(function(t){"use strict";function n(t,n){return null==t||null==n?NaN:tn?1:t>=n?0:NaN}function e(t,n){return null==t||null==n?NaN:nt?1:n>=t?0:NaN}function r(t){let r,o,a;function u(t,n,e=0,i=t.length){if(e>>1;o(t[r],n)<0?e=r+1:i=r}while(en(t(e),r),a=(n,e)=>t(n)-e):(r=t===n||t===e?t:i,o=t,a=t),{left:u,center:function(t,n,e=0,r=t.length){const i=u(t,n,e,r-1);return 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