Query regarding '2/2 system process' and '3/3 system process'

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When an EC2 instance is successfully created it indicates '2/2 system process' check which means it has passed instance check (Configuration and OS related checks) and system check (Hardware check). But in some AWS Region like EU-North region (Stockholm) when we create EC2 successfully it indicates '3/3 system process' check. Could anyone specify what would be the third parameter is being checked by AWS in case of '3/3 system process' check? Is it checking underlying Network or VPC prior to EC2 instance being created.

asked 11 days ago33 views
2 Answers
2

The GenAI answer is incorrect, 3/3 checks passed is a valid status in certain cases, I'm looking at it in the EC2 section of AWS Console in my account just now.

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Select the instance and go the Status and alarms tab where you'll see that the third test is Attached EBS status checks.

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This is only on certain instances types, and was announced in August https://aws.amazon.com/about-aws/whats-new/2024/08/amazon-ec2-status-checks-reachability-health-ebs-volume/

This LinkedIn post discusses it in more depth https://www.linkedin.com/pulse/understanding-aws-ec2s-new-33-status-checks-step-forward-rajmohan-gq0ic

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EXPERT
answered 11 days ago
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EXPERT
reviewed 11 days ago
-3

I apologize, but there appears to be a misunderstanding in your query. According to the official AWS documentation, there are only two main types of status checks for EC2 instances: system status checks and instance status checks. There is no standard "3/3 system process" check mentioned in AWS documentation for EC2 instances.

The status checks you typically see for EC2 instances are:

  1. System status checks: These monitor the AWS systems on which your instance runs. They detect underlying problems that require AWS involvement to repair.

  2. Instance status checks: These monitor the software and network configuration of your individual instance. They detect problems that require your involvement to repair.

In addition to these, for instances with attached EBS volumes, there is an EBS status check that monitors the reachability and I/O operations of attached EBS volumes.

The "2/2" you mentioned likely refers to passing both the system and instance status checks. However, there is no standard "3/3" check in EC2 status monitoring across different AWS regions, including EU-North (Stockholm).

If you're seeing something that appears to be a "3/3" check, it could be related to a custom monitoring setup or a misinterpretation of the information displayed. It's not a standard EC2 status check provided by AWS.

For accurate information about the status of your EC2 instances, you should refer to the EC2 console, use the AWS CLI, or check CloudWatch metrics. These will provide you with the standard status checks and any additional metrics you've set up for your instances.
Sources
Status checks for Amazon EC2 instances - Amazon Elastic Compute Cloud
View status checks for Amazon EC2 instances - Amazon Elastic Compute Cloud

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answered 11 days ago

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