feat(frontend): HPA for Frontend

[syntaxsdev]

Description:

Add HPA for frontend deployment

• frontend-hpa.yaml: HPA that scales the frontend deployment between 2–10 pods based on CPU
  utilization (70% threshold) of the frontend container only, with conservative scale-down behavior

• kustomization.yaml: one line added to include frontend-hpa.yaml as a resource in the production
  overlay

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 422908e4-8e1d-4bdf-bce5-73c5202850d8

📥 Commits

Reviewing files that changed from the base of the PR and between fa34bd4 and 23ebb55.

📒 Files selected for processing (1)

• components/manifests/base/core/frontend-deployment.yaml

Cache: Disabled due to data retention organization setting

Knowledge base: Disabled due to data retention organization setting

---

Walkthrough

Adds a production HorizontalPodAutoscaler named frontend targeting Deployment/frontend with minReplicas: 4, maxReplicas: 10, container-scoped CPU utilization target 70% (container frontend), and customized scaleUp/scaleDown stabilization windows and pod policies; also removes explicit replica count from the base Deployment and includes the HPA in the production kustomize overlay.

Changes

Cohort / File(s)	Summary
HPA Configuration components/manifests/overlays/production/frontend-hpa.yaml	Adds HorizontalPodAutoscaler/frontend (autoscaling/v2) targeting Deployment/frontend with minReplicas: 4, maxReplicas: 10, a container-scoped CPU ContainerResource metric for container frontend (target average utilization 70%), scaleDown stabilizationWindowSeconds: 300 with Pods policy limiting scale-down to 1 pod per 60s, and scaleUp stabilizationWindowSeconds: 30 with Pods policy limiting scale-up to 2 pods per 60s.
Kustomization Update components/manifests/overlays/production/kustomization.yaml	Adds frontend-hpa.yaml to the production overlay resources list so the HPA is included in the kustomize build output.
Deployment change components/manifests/base/core/frontend-deployment.yaml	Removes the explicit spec.replicas: 2 from the frontend Deployment to allow HPA-managed replica counts.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'feat(frontend): HPA for Frontend' clearly summarizes the main change—adding a Horizontal Pod Autoscaler for the frontend deployment, which aligns with the primary objective of the changeset.
Description check	✅ Passed	The description is directly related to the changeset, providing specific details about the HPA configuration (replica ranges, CPU utilization threshold, scale-down behavior) and mentioning the kustomization.yaml update.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

---

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

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

Inline comments:
In `@components/manifests/overlays/production/frontend-hpa.yaml`:
- Around line 12-13: The base Deployment hardcodes replicas which conflicts with
the HPA; create a patch file named frontend-deployment-patch.yaml in the
production overlay that sets spec.replicas to null for the Deployment named
"frontend" and add that patch to the overlay kustomization.yaml's patches
section so the base's replicas field is removed at build time; reference the
existing frontend Deployment (name: frontend, kind: Deployment, apiVersion:
apps/v1) and the production HPA (frontend-hpa.yaml) to ensure HPA has sole
control of scaling.

🪄 Autofix (Beta)

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Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: 9ae909a2-cef0-4c6d-b47c-aea5d1eef7ae

📥 Commits

Reviewing files that changed from the base of the PR and between 9ca8168 and ad1e26c.

📒 Files selected for processing (2)

• components/manifests/overlays/production/frontend-hpa.yaml
• components/manifests/overlays/production/kustomization.yaml

[jeremyeder]

LGTM. Set minReplicas to 4. HPA config looks solid — good use of ContainerResource to exclude the oauth-proxy sidecar, conservative scale-down, and CPU requests are already in place.

[coderabbitai]

♻️ Duplicate comments (1)

components/manifests/overlays/production/frontend-hpa.yaml (1)

8-13: ⚠️ Potential issue | 🔴 Critical

Prevent HPA/GitOps replica ownership conflict.

HorizontalPodAutoscaler/frontend (Line 8-Line 13) targets Deployment/frontend, but the base deployment still declares spec.replicas: 2. In GitOps reconciliation, that causes replica thrashing between the deployment desired state and HPA decisions. Remove/neutralize spec.replicas for Deployment/frontend in production (or configure ignore-differences for that field) so HPA is the sole scaler.

🤖 Prompt for AI Agents

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

In `@components/manifests/overlays/production/frontend-hpa.yaml` around lines 8 -
13, The HPA resource HorizontalPodAutoscaler/frontend is targeting
Deployment/frontend but the base Deployment still defines spec.replicas (2),
causing GitOps reconciliation conflicts; remove or neutralize the
Deployment/frontend's spec.replicas for the production overlay so the HPA is the
sole scaler—either delete the spec.replicas field in the production overlay (or
use a Kustomize patch/strategicMerge/json6902 to remove/set it to null) for
Deployment/frontend, or add an ignore-differences rule to your GitOps config for
the spec.replicas field of Deployment/frontend so HPA decisions are not
overwritten.

🤖 Prompt for all review comments with AI agents

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

Duplicate comments:
In `@components/manifests/overlays/production/frontend-hpa.yaml`:
- Around line 8-13: The HPA resource HorizontalPodAutoscaler/frontend is
targeting Deployment/frontend but the base Deployment still defines
spec.replicas (2), causing GitOps reconciliation conflicts; remove or neutralize
the Deployment/frontend's spec.replicas for the production overlay so the HPA is
the sole scaler—either delete the spec.replicas field in the production overlay
(or use a Kustomize patch/strategicMerge/json6902 to remove/set it to null) for
Deployment/frontend, or add an ignore-differences rule to your GitOps config for
the spec.replicas field of Deployment/frontend so HPA decisions are not
overwritten.

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: ASSERTIVE

Plan: Pro

Run ID: b2bea983-a390-42f7-9ad2-a234662f3448

📥 Commits

Reviewing files that changed from the base of the PR and between ad1e26c and fa34bd4.

📒 Files selected for processing (1)

• components/manifests/overlays/production/frontend-hpa.yaml

[coderabbitai]

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