feat: Add flexible commandArgs support for complete Feast CLI control by blaketastic2 · Pull Request #5678 · feast-dev/feast

blaketastic2

What this PR does / why we need it:

Introduces a new commandArgs parameter that allows complete control over Feast CLI command-line arguments
Maintains full backward compatibility with existing configurations through fallback logic
Enables access to all Feast CLI options including previously unavailable ones like --root_path, --registry_ttl_sec, custom ports, and future options
Provides comprehensive documentation and examples for all Feast deployment modes
Creates a future-proof solution that doesn't require template updates for new Feast CLI features

The current Feast Helm chart limits configurability by hardcoding CLI arguments. This creates several problems:

Missing Functionality: Users cannot access many Feast CLI options (e.g., --root_path for UI proxy support, --registry_ttl_sec for registry refresh control)
Maintenance Burden: Every new Feast CLI option requires template modifications and chart updates
Inflexibility: Complex deployment scenarios requiring custom argument ordering or conditional options are impossible
User Workarounds: Forces users to fork charts or use suboptimal configurations

This PR allows for flexible, comprehensive solution that will grow with Feast's capabilities while preserving existing functionality.

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