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@hwakabh hwakabh commented Dec 3, 2024

Issue/PR link

closes: #454

What does this PR do?

Describe what changes you make in your branch:

  • added --min-instances options with with.flags fields in GitHub Actions

(Optional) Additional Contexts

Describe additional information for reviewers (i.e. What does not included)

  • e2e testings are not included in this PR, since this requires merge into main to confirm changes would be applied

Summary by CodeRabbit

  • Chores
    • Updated the backend CI workflow to include a new parameter for Cloud Run deployments, ensuring a minimum of three instances for improved service reliability.

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📥 Commits

Reviewing files that changed from the base of the PR and between 13c8a21 and aa1fbd0.

Walkthrough

The pull request modifies the GitHub Actions workflow for the backend CI process by adding a new parameter, flags, to the google-github-actions/deploy-cloudrun action. This parameter is set to --min-instances=3, which establishes a minimum number of instances for the Cloud Run service deployment. Other aspects of the workflow, including code checkout, Google Cloud authentication, and package publishing, remain unchanged.

Changes

File Path Change Summary
.github/workflows/backend.yaml Added flags parameter with value --min-instances=3 to the google-github-actions/deploy-cloudrun action.

Assessment against linked issues

Objective Addressed Explanation
Add minimum instances configuration to Cloud Run (#454)

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@github-actions github-actions bot added ci Topics on workflows or automations deploy Features depending on application runtimes labels Dec 3, 2024
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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between 03da3f9 and 13c8a21.

📒 Files selected for processing (1)
  • .github/workflows/backend.yaml (1 hunks)
🔇 Additional comments (1)
.github/workflows/backend.yaml (1)

66-66: Implementation looks good!

The --min-instances=3 flag is correctly implemented using the flags parameter of the deploy-cloudrun action. This will ensure the service maintains at least 3 instances for improved availability.

with:
image: 'us-central1-docker.pkg.dev/hwakabh-dev/gh-pages/api:latest'
service: 'gh-pages-api-server'
flags: '--min-instances=3'
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💡 Codebase verification

Document min-instances configuration and consider environment-specific settings

Based on the verification, there's no existing documentation about instance configuration, and the min-instances=3 setting is hardcoded in the backend workflow without any environment distinction. The original review comment's concerns are valid:

  • No documentation exists explaining the rationale for 3 instances
  • No environment-specific configurations (same setting used for all deployments)
  • No visible cost monitoring or scaling event alerts setup
🔗 Analysis chain

Consider documenting instance count rationale and cost implications

While setting min-instances=3 improves availability, consider:

  1. Document the reasoning for choosing 3 instances (e.g., in README or deployment docs)
  2. Monitor costs as min-instances will keep these containers running even during low traffic
  3. Consider implementing different instance counts for different environments (staging vs prod)
  4. Set up alerts for unusual scaling events or high costs

Let's check if there's any existing documentation about instance counts:


Let me check if there are any configuration files or deployment manifests that might contain instance-related settings:


Let me try one final search to check for any Cloud Run or deployment-related configurations:

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for any existing documentation about instance configuration
rg -i "instances|scaling|replicas" README.md docs/ 2>/dev/null || echo "No matching documentation found"

# Check if there are different workflow files for different environments
fd -g "*backend*.ya?ml" .github/workflows/

Length of output: 170


Script:

#!/bin/bash
# Search for kubernetes manifests or cloud deployment configs
fd -e yaml -e yml -e json . | grep -i "deploy\|config"

# Search for instance/scaling related configuration in yaml/json files
rg -i "instances:|replicas:|scaling" -g "*.{yaml,yml,json}" -A 3 -B 3

Length of output: 128


Script:

#!/bin/bash
# Look for Cloud Run configurations in workflow files
rg -i "cloud-run|gcloud run" .github/workflows/ -A 5 -B 5

# Search for any comments or documentation about instances in workflow files
rg -i "min-instances|max-instances|scaling" .github/workflows/ -A 3 -B 3

Length of output: 643

@hwakabh hwakabh force-pushed the feat/454/min_instances branch from 13c8a21 to aa1fbd0 Compare December 3, 2024 02:54
@hwakabh hwakabh merged commit a79d86d into main Dec 3, 2024
4 checks passed
@hwakabh hwakabh deleted the feat/454/min_instances branch December 3, 2024 02:55
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feat(deploy): added minimal instances to Cloud Run

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