SK Enterprise Support for AWS

AWS Ticket Creation Tips

Wed, Jun 11, 2025 at 1:30 PM

When submitting an AWS ticket, including the following information may help expedite processing. If you are submitting outside business hours, please write in English for fast...

Links to helpful resources for AWS technical support

Thu, Nov 28, 2024 at 4:55 PM

Troubleshooting : https://docs.aws.amazon.com/awssupport/latest/user/troubleshooting.html Knowledge DB : https://aws.amazon.com/ko/premiumsupport/knowledge-center/

[EC2] Unable to determine instance status.

Thu, Jun 12, 2025 at 3:52 PM

If instance status checks fail, you may not be able to access your EC2 instance. If the instance status check such as “Instance reachability check” fails, you should first che...

[EC2] I can't connect to EC2 from the AWS Management Console (web browser).

Thu, Jun 12, 2025 at 3:54 PM

Issue Unable to connect to EC2 via AWS Console in a web browser Connection via SSH Client works fine When Security Group is set to allow all for SSH, connection is po...

[EC2] EC2 is not created.

Thu, Jun 12, 2025 at 3:56 PM

Check the current account’s limit. You can check it from Service Quotas in the AWS Console. Limits are based on vCPU. If EC2 cannot be created due to a limit, request a qu...

[EC2] Although the limit has been increased, EC2 is not created.

Thu, Jun 12, 2025 at 4:00 PM

If an Insufficient capacity error occurs, the following actions can be taken. ※ The Insufficient capacity error occurs when AWS does not have enough available On-Demand capaci...

[EC2] What to do when restarting instance Tomcat fails

Thu, Jun 12, 2025 at 4:01 PM

Environment Tomcat is installed and operated separately on an EC2 instance. Remote access to the EC2 instance running Tomcat is made from an on-premise VDI, not through a Ba...

[EC2] Spot Instance execution and request limit guidelines

Thu, Jun 12, 2025 at 4:05 PM

There are limits on the number of Spot Instances that can be launched and requested per AWS account, depending on the region. The Spot Instance limit is managed based on the n...

[EC2] The permissions of the /etc folder have been changed to 600, so it cannot be accessed by Root Account.

Thu, Jun 12, 2025 at 4:09 PM

Issue The permission of the /etc directory has been changed to 600, making the /etc/sudoers file inaccessible and preventing privilege escalation to root. Resolution Th...

[EC2] Unable to connect to S3 via VPN on VDI network.

Thu, Jun 12, 2025 at 4:13 PM

Issue n a VDI network, developers are unable to connect to S3 (DNS endpoint) through VPN using their development PCs. Cause Typical on-premise firewall devices do n...