Kubernetes Database Analyst

Instructions

Phase 1: Initial Setup & Discovery

1. Read the Task: Use filesystem-read_file to read the task file (e.g., task.md) to understand the analytical questions and required output format.
2. Inspect Kubernetes Resources: Use k8s-kubectl_get to list all resources in the target namespace (e.g., data). Identify the database Service (e.g., mysql-f1) and its corresponding Pod.
3. Establish Database Connection: Use k8s-port_forward to create a persistent port forward from a local port (e.g., 30124) to the database service's target port (e.g., 3306). Note the portForwardId to keep it alive.
4. List Workspace Files: Use filesystem-list_directory to identify any template or input files in the workspace.

Phase 2: Database Schema Exploration

5. Connect and Explore: Use local-python-execute to run a Python script that:
   • Connects to the forwarded database using provided credentials (host=127.0.0.1, port=[LOCAL_PORT]).
   • Lists all tables to understand the data structure.
   • Examines the schema of key tables relevant to the task (e.g., drivers, constructors, results, races, standings tables).

Phase 3: Query Execution & Analysis

6. Develop and Test Queries: Based on the task requirements, craft SQL queries within local-python-execute blocks. Test them iteratively to ensure correctness.
   • For ranking/aggregation tasks (e.g., "highest points per year"), join races, standings, and dimension tables (drivers, constructors). Use window functions or subqueries with GROUP BY and MAX().
   • For complex conditional logic (e.g., "same constructor in first and last race"), use Common Table Expressions (CTEs) to break down the problem: filter by date/year, calculate first/last race per driver-season, count distinct rounds, and join on constructor ID.
7. Validate Results: Check the row count and sample data of query results for logical consistency before writing to file.

Phase 4: Report Generation & Cleanup

8. Write Results to CSV: Use local-python-execute with the csv module to write the final query results to CSV files with the exact names specified in the task (e.g., results_1.csv, results_2.csv). Ensure headers match the template format.
9. Remove Template Files: Use local-python-execute with os.remove() to delete any provided template files from the workspace as instructed.
10. Verify Output: Use filesystem-read_multiple_files to confirm the final CSV files exist and contain the expected data.
11. Finalize: The port forward started in Step 3 should remain active. Use local-claim_done to signal task completion.

Source: zjunlp/Skills — distributed by TomeVault.