docs: clarify NetObserv ClickHouse credentials

[zhangzujian]

Summary

• document the ClickHouse system-log disable config override for NetObserv
• clarify SHA-256 password hash generation and matching plaintext secret credentials
• explain how to use a non-default ClickHouse username consistently

Verification

• ./node_modules/.bin/doom lint

Note: the standard yarn lint hook could not resolve the local doom binary in this workspace, so the commit was created with --no-verify after running the equivalent local linter successfully.

Summary by CodeRabbit

• Documentation
  • Updated operator deployment documentation with revised configuration examples.
  • Enhanced authentication setup instructions with password hash generation guidance.
  • Clarified ClickHouse username and credential configuration parameters.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 0b9e3bfa-e252-486a-8936-7a5ebccda526

📥 Commits

Reviewing files that changed from the base of the PR and between 89cf1b8 and 02c3520.

📒 Files selected for processing (1)

• docs/en/networking/observability/operator-deployment.mdx

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Walkthrough

This PR updates operator deployment documentation for ClickHouseInstallation configuration. It replaces inline system log disabling settings with a dedicated config file, adds password hash generation guidance, and clarifies the authentication secret setup with explicit plaintext password and username examples.

Changes

ClickHouseInstallation Setup Documentation

Layer / File(s)

Summary

ClickHouseInstallation Configuration and Password Setup docs/en/networking/observability/operator-deployment.mdx

YAML example restructured to use file-based 99-disable-system-logs.xml configuration instead of inline log disabling; callout marker added for password hash reference; new callouts explain the config file purpose and provide step-by-step instructions (including OpenSSL command example) for generating SHA-256 password hashes and updating authentication credentials; ck-auth.env example updated to use username=clickhouse_root and password=<PLAINTEXT_PASSWORD> with guidance for consistent username/password substitution.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Poem

🐰 A config file blooms in the logs' old place,
With hashes and passwords now shown face to face,
The root user's secret, in plaintext laid bare,
Then hashed with SHA-256, with utmost care! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'docs: clarify NetObserv ClickHouse credentials' is directly related to the main change, which updates documentation to clarify ClickHouse authentication credentials and configuration for NetObserv.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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