Add documentation for Google Pub/Sub support for ClickPipes

[tpanetti]

Summary

This adds documentation for the Google Pub/Sub support for ClickPipes. It covers basic onboarding flow as well as authentication permissions needed for GCP service accounts.

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

---

Note

Low Risk
Documentation and static assets only; no application code, auth, or data-path changes.

Overview
Documents ClickPipes for GCP Pub/Sub (Public Beta) in the docs site: a new section with an onboarding guide, a GCP IAM/service-account setup guide, and a landing page wired into the ClickPipes nav and TOC generator.

The main ClickPipes intro now lists GCP Pub/Sub as a streaming source (with a new logo asset). The overview page covers UI setup (project ID, JSON key, topic selection, formats, offsets, attribute filters), managed subscriptions (clickpipes-{pipeID}), compression, virtual columns, scaling, and at-least-once semantics. The auth page documents least-privilege IAM (why pubsub.subscriber alone is insufficient) and gcloud steps for a custom role and key upload.

Also adds google_pubsub.svg and refreshes the Amazon Kinesis logo SVG.

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Project	Deployment	Actions	Updated (UTC)
clickhouse-docs	Error	Comment	May 26, 2026 8:30pm

4 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
clickhouse-docs-jp	Ignored		May 26, 2026 8:30pm
clickhouse-docs-ko	Ignored	Preview	May 26, 2026 8:30pm
clickhouse-docs-ru	Ignored	Preview	May 26, 2026 8:30pm
clickhouse-docs-zh	Ignored	Preview	May 26, 2026 8:30pm

[dhtclk]

Looks good, just a few minor suggestions and callouts flagged during review. Non-blocking.

[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

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[cursor]

Unrelated Kinesis logo SVG modification changes visual appearance

Medium Severity

The amazon_kinesis_logo.svg file was modified in this Pub/Sub documentation PR, replacing the original gradient background (linear gradient from #4d27a8 to #a166ff) with a flat fill (#7E47D3) and changing dimensions from 64×64 to 2500×2500. This visually alters the Amazon Kinesis logo across multiple pages where it's imported, and is unrelated to the Google Pub/Sub feature being added.

 

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