Fix hardcoded alertmanager webhook URL to use Release.Name

[RoiGlinik]

Summary

• The alertmanager webhook URL was hardcoded to robusta-runner, which breaks when the Helm release name is not robusta
• Changed to use {{ .Release.Name }}-runner to match the actual runner service name generated by {{ include "robusta.fullname" . }}-runner

Test plan

• helm template verified the URL renders correctly (test-release-runner.default.svc.cluster.local)
• Deploy with a non-default release name and verify alertmanager routes to the correct runner service

🤖 Generated with Claude Code

[github-actions]

✅ Docker image ready for 3d2d072 (built in 2m 31s)

• us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:3d2d072

⚠️ Warning: does not support ARM (ARM images are built on release only - not on every PR)

Use this tag to pull the image for testing.

📋 Copy commands

⚠️ Temporary images are deleted after 30 days. Copy to a permanent registry before using them:

gcloud auth configure-docker us-central1-docker.pkg.dev
docker pull us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:3d2d072
docker tag us-central1-docker.pkg.dev/robusta-development/temporary-builds/robusta-runner:3d2d072 me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:3d2d072
docker push me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:3d2d072

Patch Helm values in one line:

helm upgrade --install robusta robusta/robusta \
  --reuse-values \
  --set runner.image=me-west1-docker.pkg.dev/robusta-development/development/robusta-runner-dev:3d2d072

[coderabbitai]

Walkthrough

The Alertmanager webhook receiver configuration in the Helm chart values was updated to reference the runner service using a templated Helm release name ({{ .Release.Name }}-runner) instead of a hardcoded service name (robusta-runner), enabling dynamic naming across different deployments.

Changes

Alertmanager Webhook Configuration

Layer / File(s)	Summary
Configuration Wiring helm/robusta/values.yaml	Alertmanager webhook receiver URL updated to use {{ .Release.Name }}-runner instead of hardcoded robusta-runner service name, allowing the runner service reference to be parameterized by Helm release name.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: fixing a hardcoded alertmanager webhook URL to use Release.Name instead of a static value.
Description check	✅ Passed	The description is directly related to the changeset, explaining the problem (hardcoded URL), the solution (using Release.Name), and the testing approach.
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
• Commit unit tests in branch fix/alertmanager-webhook-release-name

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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 `@helm/robusta/values.yaml`:
- Around line 791-792: Replace the hardcoded release name with the chart
fullname helper so Alertmanager points to the actual Service name when
fullnameOverride or truncation is in effect: change the URL host from using {{
.Release.Name }} (e.g. "http://{{ .Release.Name }}-runner...") to use the
fullname helper (e.g. "http://{{ include \"robusta.fullname\" . }}-runner..."),
ensuring the rest of the path and variables (.Release.Namespace and
.Values.global.clusterDomain) remain unchanged.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

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

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 4f7dbf96-62f0-44f2-af34-3709931ee9c2

📥 Commits

Reviewing files that changed from the base of the PR and between b147fb8 and b578d3a.

📒 Files selected for processing (1)

• helm/robusta/values.yaml