aws-ec2-debug

To debug an unreachable EC2 instance, you must systematically verify instance state, status checks, security groups, network ACLs, and route configurations. This diagnostic workflow uses AWS CLI, SSH, SSM, and CloudWatch to isolate the root cause of connectivity loss.

Diagnosing EC2 performance degradation involves retrieving console output, system logs, and CloudWatch metrics to identify boot, disk, or resource exhaustion issues. This structured approach assesses system insights to pinpoint the underlying cause of degraded performance.

Checking EC2 network configuration involves verifying security groups, network ACLs, routing tables, and public IP mapping to ensure reachability. This process confirms whether network or security misconfigurations are causing the instance to be unreachable.

Yes, you can use AWS CLI and SSM to troubleshoot EC2 boot failures by retrieving console output and system logs. These tools help identify boot errors, configuration drift, and instance state issues without requiring direct network access.

EC2 instances may fail status checks after maintenance events due to underlying state changes or configuration drift. Assessing instance state, status checks, and maintenance event history through a systematic diagnostic workflow isolates the failure cause.