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Graph/cluster-22

ClusterConcept

Config Drift Breaks Deploys

cluster-22

Misconfigured environment and policy/allowlist settings (e.g., wildcard IP ranges, missing firewall CIDRs, malformed security.policy, or failing container startup assumptions) cause deployments to silently behave differently than intended and fail healthchecks or access control.

Node Details

Public graph metadata

Updated8/7/2026

Connections

50 linked nodes

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Currently it always runs on port 3000. — TanStack Start app. Tension: How do I set this up?

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Docker container cannot find built server entry file at /app/apps/backend/dist/server.js

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When running `docker build -t frontend .`. Tension: I am not sure how to resolve this issue.

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Follow-up Docker stages cannot find the locally built base image on M1 Mac

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"Application failed to respond" — hosted on Railway. Tension: The Railway automatically assigns a dynamic port, and there is no need to write a hard-coded value. Outcome: erasing the port environmental variable from Railway.

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There are a lot of spambots causing `Invalid HTTP_HOST header` — I have a django project running in production with gunicorn. It is connected to sentry.io for comfortable error logging. Tension: Those Spam Bots fill up my sentry plan limits, and after a while other errors are not logged anymore. Outcome: What would be a simple and elegant solution to this?

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after restarting (`docker compose down`&`docker compose up -d`), about 50G was cleaned up — modify the configuration of `SENTRY_EVENT_RETENTION_DAYS` in `docker-compose.yml` in the root directory to 7. Tension: everything has been cleared, which is obviously wrong. Outcome: How to clean up properly.

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we could never get the "uploaded" debug information feature to work — using Yocto to build Rust normally on an embedded device with stripped binaries. Tension: it only ever works when the debug file itself is on the platform. Outcome: So it got solved.

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Does modern FastAPI need Gunicorn? — For a long time Gunicorn+Uvicorn was the default setup for running FastAPI in production. Tension: I haven't found any other sources to verify this statement. Outcome: No.

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n8n MCP Client cannot connect to MCP server inside Docker

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Running the Uvicorn CLI with typical FastAPI arguments (e.g., main:app, --port, --host, --reload) fails with "uvicorn: error: unrecognized arguments". The server launch never starts correctly.

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Everything works well like intent EXCEPT lifespan does not work (print to console) anymore.

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There is a conflict in `uv` when using bind mounts. Tension: When removing the volumes from the docker-compose file, it worked. Outcome: it worked.

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as soon as RAM utilisation hits ~4-5GB, the child process dies — If I run the fastapi server with workers ( `fastapi start src/api.py --port 3000 --workers 2` ). Tension: The machine has 8 cores and 64GB of RAM. Outcome: The behavior is consistent irrespective of the number of workers ( workers > 1 ).

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it stops receiving any requests — I have a FastAPI app running inside docker which is deployed using portainer. Tension: when doing curl on the docker bridge port, it just simply forever hangs. Outcome: Works fine after a few minutes but then suddenly it stops receiving any requests.

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GCP API Gateway only supports the OpenAPI version 2.0 specification. Outcome: This mismatch necessitates a manual conversion of the OpenAPI document to version 2.0.

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ERROR: Error loading ASGI app. Could not import module "main". — run through Docker. Tension: I don't find the error because my directory is organized the way it should be. Outcome: CMD ["uvicorn", "backend.app.main:app", "--host", "0.0.0.0", "--port", "8000"].

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When deployed behind a Kubernetes/API-gateway URL prefix (e.g., https://api-gateway.example.com/myapp), FastAPI tried to load OpenAPI from a path missing the prefix (e.g., /api/v1/openapi.json), causing a 404 and failing to load API definitions.

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FastAPI does not know about Lizard, Dog and Cat schemas in OpenAPI

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I work from the MSYS2 MinGW x64 shell. Outcome: pip install fastapi.

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exec: "fastapi": executable file not found in $PATH: unknown — Dockerize my fastapi application. Tension: failed to create shim task: OCI runtime create failed: runc create failed: unable to start container process.

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When running the frontend in a container, requests to /api (proxied to http://localhost:8000) fail, causing the browser to show 500 errors and Vite to log ECONNREFUSED 127.0.0.1:8000.

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Running a FastAPI app under IIS using Hypercorn fails with PermissionError [WinError 10013] when binding/creating the socket. The same Hypercorn command works when run directly from the command line outside IIS.

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the application takes 10min or so, it's not acceptable — running a Nginx reverse proxy for a FastAPI application using Uvicorn. Tension: anything above 30 seconds or a minute is not acceptable. Outcome: I fixed the issue by adding those two lines to nginx `sites-enabled` website `.conf` file.

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A FastAPI app on machine A starts successfully but cannot be reached from machine B over the network. Connections fail despite the server running without errors.

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the problem is, in fastapi/docs, when I test this endpoint, it returns {}, but the data is commited in database. — I have this function and others similars (with the same problem):. Tension: If I put a print(obj_update) BEFORE return statement, the endpoint returns the data correctly. Outcome: Why is my code being affected by print statement and how can I fix this without need to put print(obj_update)?

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Adding `py_eureka_client` to a FastAPI app during module import causes `RuntimeError: Cannot run the event loop while another loop is running` when running with `uvicorn --reload`.

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I need to upload it to an app, which does not support schemas that have been defined using `anyOf`, `allOf` or `OneOf`. — openapi.json, which has been automatically created by FastAPI (version 0.109.0). Outcome: It looks like the error is coming from the third `parameter` definition and the use of `allOf`.

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gunicorn is missing from the runtime stage, so the container cannot start the app

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The official Kaniko image come only with the needed packages and binaries to run Kaniko, but in the context of a CI pipeline a lot more than the build and push stage is needed. — using Docker is not a way of doing this in the context of Kubernetes so I found Kaniko. Outcome: I would skip the GitHub Actions artifact steps entirely (use a different store for the build context).

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Docker is not installed on the macOS runners

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There are 2 URLs in `jf config add` command: — push docker images(for deployment purposes) and build artifacts(for tracking purposes) of a Golang application. Outcome: Also you can set `--interactive=false` to be sure, even if `$CI` is not true.

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Error -2 connecting to redistester:6380. Name or service not known.

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Aborting release: unstaged modified files. Tension: I have a Dockerfile, the image version needs to be updated as a part of the build. Outcome: How can I use sed command but avoid making changes to the file.

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After I build my docker image and I attempt to push to GCR. Tension: There was a problem refreshing your current auth tokens. Outcome: Unable to acquire impersonated credentials.

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Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running? — I'm running Gitea in a k8s cluster with the official Gitea Helm Chart. Tension: I always run into the issue that docker commands won't work in the job.

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nothing, as if it wasn't listening to anything or sending requests — I have decided to use github action to display my web page and format it using Python Flask. Tension: flask stays listening on the production port (0.0.0.0), but it seems that it doesn't listen to anything.

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The MINIO connection is not listed on Airflow web UI and in CLI if I run `airflow connections list`, I get nothing. — setting up Airflow on my Kubernetes cluster using the official Helm chart. Tension: if I run a simple DAG (BashOperator echoing Hello World), the Kubernetes Executor picks up the tasks and spawns pods to run the tasks in. Outcome: The logs show up in the task.

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the condition is removed, otherwise a `403 (Forbidden)` error is served — include a direct link to the object in `index.php`. Tension: The bucket policy belows works only when either `0.0.0.0/0` is used instead of the actual IP address or the condition is removed. Outcome: I recieve a `200` response if I send a curl request via terminal.

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your application code in another container — accessing AWS resources such as S3 in LocalStack. Tension: Your application container should be configured to use LocalStack as its DNS server. Outcome: the domain name `localhost.localstack.cloud` will resolve to the LocalStack container.

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resulting in `/usr/local/bin/aws sh -c "aws s3 sync /build s3://${BUCKET_NAME} --delete"` — The docker image that you're using is built out of this Dockerfile which provides an `ENTRYPOINT`. Tension: These two parameters get combined. Outcome: which is not a valid AWS CLI command.

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The app throws ApiNotActivatedMapError when using @react-google-maps/api StandaloneSearchBox for Google Places autocomplete, even though the API key appears to work for Maps/Places requests.

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Error: host settings conflict with another service. Tension: They are both in the kamal docker network (bridge), and are exposed through kamal-proxy container. Outcome: I can deploy both backend and frontend independently.

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I still get the same error — I've rechecked all the settings, I've opened port 5432 and ran it again. Tension: I'm obviously missing something. Outcome: I managed to resolve the issue.

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I still have empty dashboard. Tension: it didn't help. Outcome: I restarted docker container with the collector after i updated config.

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database system identifier differs between the primary and standby. Outcome: copy data folder from primary instance first.

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FATAL: Ident authentication failed for user "airflow" — airflow db init. Tension: sqlalchemy.exc.OperationalError: (psycopg2.OperationalError).

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java.lang.IllegalStateException: Failed to load ApplicationContext — while running Integration test. Tension: Unexpected error when preparing a database cluster; nested exception is java.lang.IllegalStateException: Could not find a valid Docker environment.

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the process appears to "hang" at startup — Running the inErrata API locally / on a dogfood box. Tension: The port never opens; health checks get connection-refused. Outcome: the actual app process has already exited.

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I need to create custom roles with specific permissions in Apache Airflow. — I have a dictionary that contains the role names and their corresponding permissions. Outcome: Could someone provide an example or guide me on how to create these custom roles with the permissions defined in the dictionary?

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