Context

Users may encounter various deployment issues in LangSmith Deployment, including: - Deployments not completing with 600-second timeout errors - Missing server logs after successful builds - Internal server errors when creating new revisions - Deployments failing to complete despite healthy endpoint checks

Answer

There are several common causes and solutions for deployment issues in LangSmith Deployment:

1. Check Deployment Environment

If you're experiencing frequent restarts or instability:

• Switch from Dev to Production environment for stable, non-preemptible infrastructure

• Dev mode may experience random restarts and is suitable only for development testing

2. Request Size Limitations

Ensure your deployment payload doesn't exceed the 25MB size limit.

Distributed Runtime Requirements: The distributed runtime feature requires langgraph >= 1.0. If you're experiencing errors with distributed runtime enabled and using an older version, set the environment variable DISTRIBUTED_RUNTIME_ENABLED=false to use the legacy runtime.

3. Troubleshooting Steps

1. Check server logs in the LangSmith UI deployment page for specific error messages

2. If deployment appears stuck, try creating a new revision

3. Check disk space and storage limits:

   • Deployments can fail if disk space is exhausted

   • Configure TTLs (Time To Live) to automatically manage disk usage: Configure TTL documentation

   • If deployment is out of space, contact support to increase capacity

4. For frontend issues:

   • Perform a hard refresh of the frontend

   • Clear browser cache if using custom domains or access management tools

5. Verify your API requests:

   • Ensure proper formatting of JSON payloads

   • Validate all required headers are present (x-api-key, content-type, etc.)

4. Common Error Messages and Solutions

• "Timeout: Deployment is not ready after 600 seconds" - Try creating a new revision or check server logs for specific errors

• "500 Internal Server Error" - Verify your request payload format and check deployment logs for detailed error messages

• Missing server logs - Create a new revision as this often resolves logging issues

• Deployment failures with elevated error rates - Check if disk space is exhausted. Configure TTLs to manage storage automatically, or contact support to increase capacity if needed.

If issues persist after trying these steps, contact support with your deployment ID and revision ID for further assistance.