langgraph/how-tos/deploy-self-hosted/

[giscus[bot]]

langgraph/how-tos/deploy-self-hosted/

Build language agents as graphs

https://langchain-ai.github.io/langgraph/how-tos/deploy-self-hosted/

[mger1608]

This does not work at all. Running into a ton of issues running the application locally using docker and docker compose.

[gedion]

Try following module-6 from the below course. Worked like a charm for me.

https://academy.langchain.com/courses/intro-to-langgraph

[eyurtsev]

@mger1608 could you share which issues you're running into?

[mger1608]

@eyurtsev I was able to resolve the issue after following this video: https://www.youtube.com/watch?v=o9CT5ohRHzY&t=149s&pp=ygUabGFuZ2dyYXBoIGxvY2FsIGRlcGxveW1lbnQ%3D

[kihumban]

Thank you all.

I manage to get it working properly by setting the correct values for API_BASE_URL:
NEXT_PUBLIC_API_URL:

[kihumban]

I am successfully running my application locally on Docker and it's working fine on Langgraph Studio. However, I have a node.js frontend and I am getting the following error message.

---

Unhandled Runtime Error
Error: HTTP 500: {"error":"Failed to parse URL from undefined/threads/search"}

Call Stack
HTTPError.fromResponse
node_modules/@langchain/langgraph-sdk/dist/utils/async_caller.js (56:0)
async eval
node_modules/@langchain/langgraph-sdk/dist/utils/async_caller.js (132:0)
async RetryOperation.eval [as _fn]
node_modules/p-retry/index.js (50:0)

---

It seem I am not hooking properly to the API server. What configuration do I need to do to properly connect the local API server to the frontend client? What values to I need to set for the following environmental variables?
API_BASE_URL:
NEXT_PUBLIC_API_URL:

[Jackoder]

When I use the docker compose, the error print like this:

langgraph-api-1       |   File "/api/langgraph_api/graph.py", line 295, in _graph_from_spec
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 936, in exec_module
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 1073, in get_code
langgraph-api-1       |   File "<frozen importlib._bootstrap_external>", line 1130, in get_data
langgraph-api-1       | FileNotFoundError: [Errno 2] No such file or directory: '/deps/langgraph-example-pyproject/my_agent\\agent.py'
langgraph-api-1       | Could not find python file for graph: GraphSpec(id='agent', path='/deps/langgraph-example-pyproject/my_agent\\agent.py', module=None, variable='graph', config=None)
langgraph-api-1       |  [uvicorn.error] api_revision=5d700cd api_variant=local
langgraph-api-1       | 2024-12-22T03:06:37.937434Z [error    ] Application startup failed. Exiting. [uvicorn.error] api_revision=5d700cd api_variant=local
langgraph-api-1 exited with code 3

The docker-compose.yml is below:

volumes:
    langgraph-data:
        driver: local
services:
    langgraph-redis:
        image: redis:6
        healthcheck:
            test: redis-cli ping
            interval: 5s
            timeout: 1s
            retries: 5
    langgraph-postgres:
        image: postgres:16
        ports:
            - "5433:5432"
        environment:
            POSTGRES_DB: postgres
            POSTGRES_USER: postgres
            POSTGRES_PASSWORD: postgres
        volumes:
            - langgraph-data:/var/lib/postgresql/data
        healthcheck:
            test: pg_isready -U postgres
            start_period: 10s
            timeout: 1s
            retries: 5
            interval: 5s
    langgraph-api:
        image: langgraph-image
        ports:
            - "8123:8000"
        depends_on:
            langgraph-redis:
                condition: service_healthy
            langgraph-postgres:
                condition: service_healthy
        env_file:
            - .env
        environment:
            REDIS_URI: redis://langgraph-redis:6379
            LANGSMITH_API_KEY: <...>
            POSTGRES_URI: postgres://postgres:postgres@langgraph-postgres:5432/postgres?sslmode=disable

[Jackoder]

Using Docker, the error like this. Do I need to add some data to the postgres?

• command

docker run --env-file .env -p 8123:8000 -e REDIS_URI="redis:<host>:6379" -e DATABASE_URI="postgres://postgres:postgres@<host>:5432/postgres?sslmode=disable" -e LANGSMITH_API_KEY="<key>" expert_system

• error

2024-12-26T08:13:10.999598Z [info     ] HTTP Request: GET https://api.smith.langchain.com/auth?langgraph-api=true "HTTP/1.1 200 OK" [httpx] api_revision=3b943f4 api_variant=local
2024-12-26T08:13:11.112475Z [error    ] Traceback (most recent call last):
  File "/usr/local/lib/python3.11/site-packages/starlette/routing.py", line 693, in lifespan
    async with self.lifespan_context(app) as maybe_state:
  File "/usr/local/lib/python3.11/contextlib.py", line 210, in __aenter__
    return await anext(self.gen)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/api/langgraph_api/lifespan.py", line 29, in lifespan
  File "/usr/local/lib/python3.11/site-packages/langgraph_storage/database.py", line 148, in start_pool
    await migrate()
  File "/usr/local/lib/python3.11/site-packages/langgraph_storage/database.py", line 85, in migrate
    current_version = (await results.fetchone())["version"]
                      ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
TypeError: 'NoneType' object is not subscriptable
 [uvicorn.error] api_revision=3b943f4 api_variant=local
2024-12-26T08:13:11.112606Z [error    ] Application startup failed. Exiting. [uvicorn.error] api_revision=3b943f4 api_variant=local

[avfranco-br]

Have you reviewed your langgraph.json? It doesn't seem correct this path 'my_agent\agent.py'

[avfranco-br]

Langgraph Studio and CLI problem: Graph not found

Hi all, Happy Xmas! I am stuck for a week trying to make my langgraph project work with Langgraph Visual Studio and haven't found the root cause yet. Module 6 deployment and rag-research-agent-template both work fine. I've compared the langgraph.json, pyproject.toml, and docker-compose.yml but no lucky. The building process finishes successfully.

Has anyone faced similar issue? Thanks in advance for any help.

Alexandre