AWS VPC Peering Not Routing
AWS VPC peering connections do not route when route tables are not updated.
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AWS fixes
Published troubleshooting guides for aws issues.
AWS EKS EKSCTL Addon Not Creating
AWS EKSCTL addons fail to create when IAM OIDC provider is missing.
AWS EKS External DNS Not Updating
AWS ExternalDNS does not update Route53 when IAM permissions are wrong.
AWS EKS Load Balancer Controller Failed
AWS ALB controller cannot create ALB when IAM policy is missing.
AWS EKS Admission Webhook Timeout
AWS EKS admission webhooks timeout when endpoint is unreachable.
AWS EKS Cluster Autoscaler Not Scaling
AWS EKS cluster autoscaler does not scale when ASG tags are missing.
AWS EKS IAM Role for Service Account
AWS EKS IRSA does not work when OIDC provider is not configured.
AWS EKS Pod Networking Failed
AWS EKS pods cannot communicate when VPC CNI plugin is broken.
AWS EKS Node Not Joining
AWS EKS nodes do not join when aws-auth ConfigMap is misconfigured.
AWS ECS Exec Command Not Working
AWS ECS Exec fails when task IAM role does not allow ssmmessages.
AWS ECS Service Discovery Not Resolving
AWS Cloud Map service discovery does not resolve when DNS namespace is wrong.
AWS ECS Sidecar Container Failed
AWS ECS sidecar containers fail when essential container exits.
AWS ECS Fargate CPU Memory Wrong
AWS ECS Fargate tasks fail when CPU and memory combination is invalid.
AWS ECS Service Not Scheduling
AWS ECS service cannot schedule tasks when task definition is invalid.
AWS ECS Task Pending
AWS ECS tasks remain pending when cluster capacity is insufficient.
AWS Lambda SnapStart Initialization Failed
AWS Lambda SnapStart fails when function is not published or alias is missing.
AWS Lambda Provisioned Concurrency Not Scaling
AWS Lambda provisioned concurrency does not scale when alias is not configured.
AWS Lambda Container Image Pull Failed
AWS Lambda cannot pull container image when ECR permissions are missing.
AWS Lambda Stream BatchItem Processor Failed
AWS Lambda batch item processor fails when partial failure response is wrong.
AWS Lambda Destination Not Delivered
AWS Lambda destinations are not delivered when SQS or SNS is misconfigured.
AWS Lambda Layer Version Mismatch
AWS Lambda layers conflict when runtime version does not match.
AWS Lambda Trigger Permission Denied
AWS Lambda triggers fail when resource-based policy does not allow invoke.
AWS Lambda Cold Start Latency
AWS Lambda cold starts cause latency when provisioned concurrency is not enabled.
AWS Lambda Memory Limit Exceeded
AWS Lambda functions fail when memory allocation is insufficient.
AWS Lambda Function Timeout
AWS Lambda functions timeout when execution exceeds configured timeout.
AWS RDS Event Notification Not Sending
AWS RDS event notifications are not sent when SNS topic policy denies publish.
AWS RDS Snapshot Sharing Failed
AWS RDS snapshot sharing fails when KMS key is not shared.
AWS RDS Proxy Connection Pooling Not Working
AWS RDS Proxy does not pool connections when IAM auth is misconfigured.
AWS RDS Aurora Global Database Lag
AWS Aurora Global Database replication lag increases when network latency is high.
AWS RDS Aurora Failover Slow
AWS Aurora failover takes too long when promotion tier is misconfigured.
AWS RDS Read Replica Lag High
AWS RDS read replica falls behind when write throughput is high.
AWS RDS Parameter Group Not Applying
AWS RDS parameter changes do not apply when require reboot is ignored.
AWS RDS Automated Backup Failed
AWS RDS automated backups fail when backup window conflicts with maintenance.
AWS RDS Connection Limit Exceeded
AWS RDS rejects connections when max_connections parameter is reached.
AWS RDS Instance Unavailable
AWS RDS instance is unavailable when storage is full or failover is in progress.
AWS S3 Batch Operations Job Failed
AWS S3 batch operations fail when manifest format is invalid.
AWS S3 Select Query Failed
AWS S3 Select queries fail when SQL expression syntax is invalid.
AWS S3 Inventory Report Missing
AWS S3 inventory reports are not delivered when destination bucket is wrong.
AWS S3 Replication Not Working
AWS S3 CRR does not replicate when IAM role or rule is misconfigured.
AWS S3 Lifecycle Rule Not Expiring
AWS S3 lifecycle rules do not expire objects when filter is misconfigured.
AWS S3 CORS Config Missing
AWS S3 CORS requests fail when bucket CORS configuration is missing.
AWS S3 Bucket Policy Denied
AWS S3 access is denied when bucket policy does not allow the principal.
AWS EC2 Instance Connect Not Working
AWS EC2 Instance Connect fails when SSH authorized keys are not pushed.
AWS EC2 Launch Template Version Wrong
AWS EC2 launch template uses wrong version when auto scaling group is not updated.
AWS EC2 Auto Scaling Health Check Failed
AWS ASG instances fail health checks when ELB target group health check fails.
AWS EC2 Spot Instance Interrupted
AWS spot instances are interrupted when spot price exceeds bid price.
AWS EC2 Systems Manager SSM Not Connected
AWS SSM Session Manager cannot connect when SSM agent is not running.
AWS EC2 Security Group Blocking
AWS security group rules block traffic when ingress is not configured correctly.
How to Fix AWS API Gateway 403 Missing Authentication Token
Restore AWS API Gateway access when requests return 403 Missing Authentication Token because the route, stage, custom domain mapping, or method path is wrong.
How to Fix AWS ALB Target Group Unhealthy
Restore AWS Application Load Balancer traffic when targets stay unhealthy because the health check path, port, security groups, or app response is wrong.
AWS EC2 EBS Volume Attachment Failed
AWS EBS volume attachment fails when instance is stopped or device name is in use.
AWS EC2 Instance Not Starting
AWS EC2 instance fails to start when IAM instance profile permissions are insufficient.