feat(grafana_dashboard): enable datasource selection via templating

[minatoaquaMK2]

This commit updates the Grafana dashboard configuration to include a datasource template variable. This allows users to dynamically select the datasource directly within the Grafana dashboard, improving flexibility and user experience.

Title

Enable datasource selection via templating

Relevant issues

N/A (This introduces a new feature)

Pre-Submission checklist

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• I have Added testing in the tests/litellm/ directory, Adding at least 1 test is a hard requirement - see details
• I have added a screenshot of my new test passing locally
• My PR passes all unit tests on (make test-unit)[https://docs.litellm.ai/docs/extras/contributing_code]
• My PR's scope is as isolated as possible, it only solves 1 specific problem

Type

🆕 New Feature

Changes

This Pull Request introduces a new feature to the Grafana dashboard configuration, enabling users to dynamically select the datasource directly within the dashboard. This is achieved by adding a datasource template variable (e.g., $datasource) to the dashboard configuration. Subsequently, the panel configurations that utilize the datasource are updated to reference this template variable.

Before:

After:

Benefits:

• Increased Flexibility: Users can now switch between datasources on the dashboard without modifying configuration files, improving adaptability across different environments (development, testing, production).
• Improved User Experience: The ability to select datasources via a user-friendly dropdown menu enhances the overall experience.
• Simplified Management: This reduces the need to maintain multiple dashboard configurations tailored to specific datasources.

Testing:

• Successfully tested the addition of the $datasource template variable on a local Grafana instance.
• Verified that dashboard panels correctly display data after selecting different datasources via the template variable.

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Name	Status	Preview	Comments	Updated (UTC)
litellm	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 24, 2025 3:30am

[CLAassistant]

All committers have signed the CLA.

[ishaan-jaff]

Can you select a DS and show the filled in data to confirm it's working

[minatoaquaMK2]

@ishaan-jaff

[minatoaquaMK2]

[ishaan-jaff]

LGTM

[ishaan-jaff]

@minatoaquaMK2 please sign the CLA so we can merge

[minatoaquaMK2]

@ishaan-jaff Thank you for the review. I have signed the CLA.