Tail Lambda/CloudWatch logs aws
Live-stream a log group like tail -f. modern: replaces clunky filter-log-events polling
aws logs tail /aws/lambda/<name> --follow --since 10m --format short
more aws
all 14 commands →
Simulate IAM policy decision
aws iam simulate-principal-policy --policy-source-arn <id> --action-names s3:GetObject --resource-arns <id> --query 'EvaluationResults[].{action:EvalActionName,decision:EvalDecision}' --output table
Read a secret value
aws secretsmanager get-secret-value --secret-id <name> --query SecretString --output text | jq -r '.password'
Cheapest spot price by AZ
aws ec2 describe-spot-price-history --instance-types m6i.large --product-descriptions 'Linux/UNIX' --start-time $(date -u +%Y-%m-%dT%H:%M:%S) --query 'sort_by(SpotPriceHistory,&SpotPrice)[0:5].[AvailabilityZone,SpotPrice]' --output table
Deploy CloudFormation stack
aws cloudformation deploy --template-file stack.yaml --stack-name <name> --capabilities CAPABILITY_NAMED_IAM --parameter-overrides Env=prod --no-fail-on-empty-changeset
Count results with JMESPath
aws ec2 describe-volumes --filters Name=status,Values=available --query 'length(Volumes[])' --output text --profile staging --region <id>