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Useful AWS CLI Commands

commands I have found to be useful

Posted Updated
By Layth
1 min read
Useful AWS CLI Commands

SSM

  • make sure you can ping host within the ec2 instance or use telnet
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aws ssm start-session --target ec2-instance-id \
--document-name AWS-StartPortForwardingSessionToRemoteHost \
--parameters host="your-host",portNumber="host-port",localPortNumber="your-port"
  • example for something like Aurora MySQL Cluster
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aws ssm start-session --target i-######## \
--document-name AWS-StartPortForwardingSessionToRemoteHost \
--parameters host="name.cluster-randomchars.region.rds.amazonaws.com",portNumber="3306",localPortNumber="9000"
  • Want to know how many free IPs per subnet you got in a AWS VPC?
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aws ec2 describe-subnets --filters "Name=vpc-id,Values=vpc-xxxxxxxxx" \
  --query "Subnets[*].[SubnetId,CidrBlock,AvailableIpAddressCount]" \
  --output table
  • Want to find the stack of a particular VPC?
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aws cloudformation describe-stack-resources --physical-resource-id vpc-12345678 --query 'StackResources[0].StackName' --output text
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