Check disk utilization on EC2 instances sharing a tag. Each is online as a managed node with SSM Agent, required IAM permissions, and connectivity.
Do not distribute SSH keys, and review execution results centrally.
Which feature is most appropriate?
Use Systems Manager Run Command with a tag target to execute the diagnostic and collect its results.
Detailed explanation
This avoids SSH keys, but Run Command is better suited to distributing the same command and consolidating results across nodes.
This avoids SSH keys, but Run Command is better suited to distributing the same command and consolidating results across nodes.
Tag information does not execute a diagnostic command in the guest OS.
Tag information does not execute a diagnostic command in the guest OS.
User data is primarily for bootstrapping; editing it does not immediately distribute diagnostics and collect results on running nodes.
User data is primarily for bootstrapping; editing it does not immediately distribute diagnostics and collect results on running nodes.
Target online managed nodes by tag, execute diagnostics, and review status and results.
Target online managed nodes by tag, execute diagnostics, and review status and results.
Check official documentation
Compare the following points with the official documentation.
Review Run Command managed-node targeting and execution results.
Official references
What to confirm
Select ready managed nodes by tag and track their command results.
Key points
- Systems Manager Run Command
- Managed node
- Tag target
Notes
- Environment: AWS SOA-C03 exam guide and the linked AWS documentation
- Reviewed against the linked AWS documentation on 2026-10-03.
Foundation review
Targeting and readiness
Tags select nodes; they do not provide command transport. First verify the running SSM Agent, Systems Manager connectivity, and required permissions.
Batch commands and interactive sessions
Run Command distributes a document and parameters to multiple nodes. Track status and node results using the command ID; individual Session Manager sessions serve a different workflow.