Knowledge Center Monthly Newsletter - August 2025

New Knowledge Center articles

Find all new Knowledge Center articles published in August. We publish new articles to resolve the most common issues you might encounter.

Amazon Bedrock

How do I troubleshoot connection issues between my Confluence Cloud instance and my Amazon Bedrock knowledge base?

How do I troubleshoot the ModelNotReadyException error when I use imported models in Amazon Bedrock?

Amazon CloudFront

How do I troubleshoot CloudFront "503 Service Unavailable" errors?

How do I troubleshoot CloudFront distribution access issues with CNAMEs and custom origins?

Amazon Elastic Block Store (Amazon EBS)

Why is my AMI or EBS snapshot creation slow or stuck in the pending state?

Amazon Elastic Compute Cloud (Amazon EC2)

How do I resolve NVIDIA GPU and GPU driver communication issues in Amazon EC2?

How do I use NVMe over TCP to mount an FSx for ONTAP file system on an EC2 Linux instance?

How do I use NFS to mount an FSX for ONTAP volume on my EC2 Linux instance?

How do I mount an FSx for ONTAP CIFS share on a Linux EC2 instance that's not joined to an Active Directory?

How do I use iSCSI to mount an FSx for ONTAP iSCSI LUN on an EC2 Linux instance?

Amazon Elastic Kubernetes Service (Amazon EKS)

How can I resolve disk pressure on my Amazon EKS worker nodes?

How do I use Systems Manager Automation to update and apply security patches to my Amazon EKS worker node AMIs?

How do I troubleshoot IAM role issues in my Amazon EKS cluster?

How do I resolve API errors when I upgrade my cluster version in Amazon EKS?

Amazon EMR

How do I publish and monitor an Amazon EMR application status with CloudWatch integration?

Amazon Managed Workflows for Apache Airflow (Amazon MWAA)

How do I resolve the "psycopg2.OperationalError: SSL connection has been closed unexpectedly error" in Amazon MWAA?

Amazon Redshift

Why does Amazon Redshift create temporary tables on my cluster and do the tables consume node memory space?

Why can’t I terminate my query in Amazon Redshift?

Amazon Route 53

How do I troubleshoot DNS propagation issues after transferring a domain to Route 53 or another DNS hosting provider?

How do I troubleshoot and resolve CNAME record resolution issues with private hosted zones and cross-account setups in AWS Route53?

How do I troubleshoot and resolve website access issues in Amazon Route 53?

How do I resolve verification issues for domains that I registered with Amazon Route 53?

How do I manage domain settings, renewals, and WHOIS information for domains registered with Route 53?

Amazon SageMaker

How do I configure and troubleshoot Streamlit and Gradio applications in my SageMaker AI notebook instances?

AWS CloudFormation

How do I convert a CloudFormation self-managed StackSet to a service-managed StackSet?

AWS Key Management Service (AWS KMS)

How do I resolve Access Denied errors when I use an IP-restricted IAM role to access SSE-KMS encrypted S3 objects?

Amazon OpenSearch Service

How do I recognize and resolve cluster health issues that have too many shards?