docs (k8s): Add Prometheus ServiceMonitor section for Console on K8s

[david-yu]

Summary

DO NOT MERGE UNTIL 26.1

• Adds a new Prometheus ServiceMonitor subsection under the existing Monitoring section of the Console Kubernetes deploy page
• Documents the monitoring.enabled, monitoring.scrapeInterval, and monitoring.labels Helm values introduced in Add ServiceMonitor for admin metrics in console chart redpanda-operator#1280
• Covers standalone Console chart and Redpanda subchart usage, plus TLS behavior

Relates to redpanda-data/redpanda-operator#1056

Preview docs

Deploy Redpanda Console on Kubernetes

Test plan

• Verify the new section renders correctly on the docs site
• Confirm Helm value names and defaults match the operator PR

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[coderabbitai]

📝 Walkthrough

Walkthrough

Documentation was added to the Kubernetes deployment guide specifying how to configure Prometheus Operator ServiceMonitor for Redpanda Console. The update documents Helm configuration values under monitoring (enabled, scrapeInterval, labels) with defaults, covers both standalone and subchart deployment scenarios, and describes TLS configuration when config.server.tls.enabled is enabled.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The PR description includes a summary of changes, preview links, and a test plan, but is missing required sections from the template (Jira ticket link, review deadline, and checkbox selections).	Add the Jira ticket link under 'Resolves', specify a review deadline, and mark the appropriate checkboxes (Content gap or Support Follow-up) to match the template structure.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: adding documentation for Prometheus ServiceMonitor configuration for Console on Kubernetes.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

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[coderabbitai]

Actionable comments posted: 1

🧹 Nitpick comments (1)

modules/deploy/pages/console/kubernetes/deploy.adoc (1)

430-437: Clarify subchart configuration for all monitoring keys

This example only shows console.monitoring.enabled, which can read as if scrapeInterval and labels are unavailable for subchart usage. Please include a full nested example to avoid misconfiguration.

✏️ Suggested doc tweak

 console:
   monitoring:
     enabled: true
+    scrapeInterval: "30s"
+    labels:
+      release: kube-prometheus-stack

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@modules/deploy/pages/console/kubernetes/deploy.adoc` around lines 430 - 437,
The snippet only shows console.monitoring.enabled and may imply other keys
aren't available; update the documentation example for the `console` subchart to
show the full nested monitoring block including `enabled`, `scrapeInterval`, and
`labels` (and any other monitoring-related keys used by Console), e.g., expand
the YAML under `console.monitoring` to include `scrapeInterval: "30s"` and a
`labels:` map with typical prometheus labels so readers can copy a complete
subchart configuration; edit the example around the `console` key and ensure you
reference `console.monitoring.enabled`, `console.monitoring.scrapeInterval`, and
`console.monitoring.labels` to make all supported options explicit.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@modules/deploy/pages/console/kubernetes/deploy.adoc`:
- Line 439: The doc line incorrectly claims the ServiceMonitor includes TLS
certificate and key file paths; update the sentence about ServiceMonitor/TLS to
say that when config.server.tls.enabled: true and monitoring is enabled, the
ServiceMonitor uses HTTPS and its tlsConfig only contains server-validation
fields (insecureSkipVerify, caFile, ca, serverName) for CA/server validation—not
client certificate/key paths—so remove any mention of client cert/key and
explicitly call out that this is server-side validation only.

---

Nitpick comments:
In `@modules/deploy/pages/console/kubernetes/deploy.adoc`:
- Around line 430-437: The snippet only shows console.monitoring.enabled and may
imply other keys aren't available; update the documentation example for the
`console` subchart to show the full nested monitoring block including `enabled`,
`scrapeInterval`, and `labels` (and any other monitoring-related keys used by
Console), e.g., expand the YAML under `console.monitoring` to include
`scrapeInterval: "30s"` and a `labels:` map with typical prometheus labels so
readers can copy a complete subchart configuration; edit the example around the
`console` key and ensure you reference `console.monitoring.enabled`,
`console.monitoring.scrapeInterval`, and `console.monitoring.labels` to make all
supported options explicit.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 0f18d634-a4bc-42a9-99dc-e883f336510b

📥 Commits

Reviewing files that changed from the base of the PR and between 4230c3f and 4b05f0e.

📒 Files selected for processing (1)

• modules/deploy/pages/console/kubernetes/deploy.adoc

[micheleRP]

lgtm, thanks @david-yu!

[david-yu]

Thanks for the changes looks good.