Today I Fixed

kubectl drain stuck — Cannot evict pod as it would violate the pod's disruption budget

docker compose up failing with 'Bind for 0.0.0.0:5432 failed: port is already allocated'

Kubernetes pods stuck in Pending — 0/3 nodes are available: 3 Insufficient cpu

AWS S3 403 Access Denied even though IAM policy allows s3:GetObject

Helm upgrade accidentally deployed production values to staging

Server disk at 100%, application failing to write logs — finding and clearing space fast

GitHub Actions Docker build ignoring cache and rebuilding from scratch every run

Kubernetes Ingress returning 404 for all paths even though pods are running

terraform output showing null or 'output variable could not be found'

ArgoCD Image Updater ignoring new ECR tags — missing annotation + credentials

AWS CLI failing with ExpiredTokenException on assumed-role credentials

Docker image was 1.2GB — dropped to 180MB with multi-stage build

Grafana showing 'No data' after moving Prometheus to a new namespace

CrashLoopBackOff on new deployment — ConfigMap created in wrong namespace

Updated a Kubernetes Secret but pod was still reading the old value

Nginx Ingress returning 502 Bad Gateway — wrong targetPort in Service

Velero backup stuck in InProgress for 2 hours — node-agent OOMKilled

AWS ECR: no basic auth credentials / authorization token expired

Docker Compose env variable defined but empty inside container

GitHub Actions: permission denied to contents:write in workflow

Helm: Error: release not found (but it definitely exists)

Linux high iowait CPU causing app slowdown

Kubernetes nodes stuck NotReady after cluster upgrade

Python requests: SSL certificate verify failed in Kubernetes pod

Terraform: BucketAlreadyOwnedByYou error on S3 bucket creation

ArgoCD application stuck in Progressing state forever

SSH: Permission denied (publickey) even with correct key

AWS RDS max_connections exceeded under load

git push rejected: non-fast-forward after rebase

Docker build failing: no space left on device

Helm secrets not decrypted when deployed via ArgoCD

kubectl: Error from server - connection refused

Kubernetes Pod Stuck in ContainerCreating — What's Actually Wrong

GitLab CI Job Stuck in Pending — Runner Never Picks It Up

AWS Load Balancer Controller not creating ALB — Ingress stuck with no address

Helm --set flag not overriding values.yaml — changes being ignored

Prometheus alert not firing even though metric was above threshold

Docker build cache not being used in CI — every build starting from scratch

Terraform plan showing resource destroy on every run even with no changes

Kubernetes HPA not scaling even though CPU was at 90%

GitHub Actions OIDC to AWS failing — could not assume role

ArgoCD app stuck in Progressing state for 10 minutes — never synced

Kubernetes Namespace Stuck in Terminating for 2 Hours

Helm Release Shows Deployed but App Serving Old Version

ALB Target Group All Targets Unhealthy After ECS Deploy

Docker Build Passes Locally (M2 Mac) But Fails in GitHub Actions

AWS ECR: 401 Unauthorized When Pulling Image in Kubernetes

Terraform: Provider Lock File Mismatch on Different OS

Docker: Permission Denied on /var/run/docker.sock

Helm Release Stuck in 'pending-upgrade' State

kubectl port-forward keeps disconnecting after 60 seconds