Docs: sync upstream clickhouse-operator docs updates

[mintlify]

Summary

Syncs the new "Server logging" subsection added upstream in clickhouse-operator#220 by @arekborucki into the Mintlify docs.

Changes

• products/kubernetes-operator/guides/configuration.mdx — adds a new ### Server logging {#server-logging} subsection under ClickHouse settings, between Database sync and Custom configuration. Content copied verbatim from upstream docs/guides/configuration.mdx, including:
  • Example spec.settings.logger YAML with all five fields (logToFile, jsonLogs, level, size, count) and their defaults.
  • Field reference table.
  • Rendered default logger: block.
  • Note that the same block applies to KeeperCluster (files under /var/log/clickhouse-keeper/).
  • Callout that console logging stays on regardless of logToFile.

Context

Upstream commit: 73d4938 — "docs: document spec.settings.logger server logging configuration (#220)".

No conflicts. The target file already had the surrounding sections in the same order as upstream, so the new subsection slotted in cleanly.

cc @arekborucki for review.

---

Note

Low Risk
Documentation-only change with no code or deployment impact.

Overview
Adds a new Server logging subsection to the Kubernetes operator configuration guide, documenting spec.settings.logger for ClickHouseCluster and KeeperCluster.

The section covers optional fields (logToFile, jsonLogs, level, size, count) with defaults, a field reference table, the effective default logger block the operator renders, and notes that console logging stays enabled for kubectl logs while Keeper uses /var/log/clickhouse-keeper/.

This is a docs-only sync from upstream clickhouse-operator PR #220; no operator or runtime behavior changes in this repo.

^{Reviewed by Cursor Bugbot for commit a9e98f7. Bugbot is set up for automated code reviews on this repo. Configure here.}

[mintlify]

Preview deployment for your docs. Learn more about Mintlify Previews.

Project	Status	Preview	Updated (UTC)
ClickHouse-docs	🟢 Ready	View Preview	Jun 9, 2026, 11:42 AM