docker

Docker container memory allocation failure during multi-region replication

by
a golden docker logo on a black background

Docker Container Memory Allocation Failure During Multi‑Region Replication Problem Description During a scheduled multi‑region data replication job, Docker containers that host the replication agents repeatedly terminate with out‑of‑memory (OOM) errors. The failure manifests as: 2024-07-15T03:12:47.321Z containerd[1234]: failed to create shim task: failed to start container: OCI runtime create failed: container_linux.go:380: starting container process caused “process_linux.go:449: … Read more

Ingress routing misconfiguration in Docker GPU cluster

by
a golden docker logo on a black background

Problem Description In a Docker Swarm GPU cluster (A100/H100), services that request –gpus become unreachable through the Swarm ingress routing mesh. Clients receive HTTP 502/504 errors, and the Docker daemon logs report failures such as: Failed to create endpoint: network ingress: driver failed programming the network: MTU mismatch Ingress routing mesh: connection timed out (504) … Read more

RAG embedding model dimension mismatch after deployment update

by
A computer monitor sitting on top of a desk next to a plant

Problem Description The RAG (Retrieval‑Augmented Generation) service deployed on a Kubernetes cluster began returning vector dimension mismatch errors after a routine rolling update. The symptoms observed across multiple pods were: FAISS index load failures: ValueError: Expected embedding dimension 768 but got 1024 Cosine‑similarity runtime errors: RuntimeError: shape mismatch for dot product: (batch, 768) vs (batch, … Read more

Kubernetes pod OOMKilled after increasing AI model size

by
blue and red cargo ship on sea during daytime

Problem – Pods OOMKilled After Increasing AI Model Size An AI inference service deployed on a multi‑node Kubernetes cluster started failing shortly after the model binary grew from 2 GB to 4 GB. The symptoms observed across the cluster were: State: Terminated Reason: OOMKilled in kubectl describe pod output. Node‑level memory pressure events and occasional pod eviction … Read more

Docker container DNS resolution fails intermittently in multi-region Kubernetes

by
red and blue cargo ship on sea during daytime

Problem – Intermittent DNS Resolution Failures in Docker Containers Across Multi‑Region Kubernetes AI inference services deployed as Docker containers on Amazon EKS clusters in several AWS regions (e.g., us-east-1, eu-central-1, ap-south-1) experience sporadic failures when resolving external endpoints such as model registries, third‑party APIs, or telemetry services. The failures manifest as: Go errors: dial tcp: … Read more

Kubernetes ReplicaSet scaling issue with GPU resources available

by
red and blue cargo ship on sea during daytime

Problem Description In a Docker‑based AI training workload orchestrated by Kubernetes, a ReplicaSet that should run multiple pods—each requesting a set of GPUs—stops scaling after the first replica. The cluster has sufficient free GPUs (e.g., a node with 8 × NVIDIA A100), but subsequent pods remain in Pending with scheduler messages such as: 0/5 nodes are available: 5 … Read more

PyTorch model logprob inconsistencies under high gRPC traffic

by
blue and red cargo ship on sea during daytime

Problem Description During a sustained load test of a Docker‑containerized language model serving endpoint, the logprob values returned by the PyTorch model became inconsistent. Under low traffic the model produced deterministic log‑softmax outputs, but at peak rates (≈200 RPS) the following symptoms were observed: Log probabilities drifted by up to 0.12 nats between identical inputs. Intermittent errors … Read more

Docker API server refuses connection from data pipeline

by
red and blue cargo ship on sea during daytime

Problem Description The data‑pipeline service, defined in a docker‑compose.yml file, attempts to call the API server at http://api:5000/api during ingestion. The call consistently fails with either a timeout or a connection‑refused error, causing the pipeline to abort. Typical log excerpts: pipeline | 2026-06-12T08:14:32Z ERROR: dial tcp 172.18.0.3:5000: connect: connection refused pipeline | 2026-06-12T08:14:32Z ERROR: Get … Read more