extending otel config

[dhtclk]

Summary

Correcting the advanced config section with documentation on extending the otel config.

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

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
clickhouse-docs	Ready	Preview	Comment	Nov 6, 2025 3:58pm

3 Skipped Deployments

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clickhouse-docs-jp	Ignored			Nov 6, 2025 3:58pm
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clickhouse-docs-zh	Ignored	Preview		Nov 6, 2025 3:58pm

[gingerwizard]

@dhtclk

This makes no sense at all. Why would they get start how the stack started, copy the ingestion key and starting new stack which will have a different ingestion key.

We need to modify the guides such that we assume the user doesn't have a stack started. There is no copying of the ingestion key and we simply introduce and extend the receivers and in order to collect the metrics.