AWS SysOps Administrator Associate Flashcards (SOA-C02)

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aws cloudwatch put-metric-data \
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  --namespace "MyApp" \
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  --metric-name "ActiveUsers" \
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  --dimensions Environment=prod \
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  --value 42 \
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  --unit Count

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# Find the top 10 slowest requests in an API log group
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fields @timestamp, @message, duration
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| filter @message like /Request/
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| sort duration desc
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| limit 10

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# Run an SSM Automation runbook from the CLI
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aws ssm start-automation-execution \
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  --document-name "AWS-RestartEC2Instance" \
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  --parameters "InstanceId=i-0abc1234"

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# Target tracking policy on a custom CloudWatch metric
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aws autoscaling put-scaling-policy \
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  --auto-scaling-group-name my-asg \
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  --policy-name keep-cpu-50 \
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  --policy-type TargetTrackingScaling \
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  --target-tracking-configuration file://config.json

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aws cloudformation detect-stack-drift --stack-name my-stack
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aws cloudformation describe-stack-resource-drifts --stack-name my-stack

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// TypeScript CDK: an S3 bucket with versioning enabled
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import { Stack, StackProps } from 'aws-cdk-lib';
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import { Bucket } from 'aws-cdk-lib/aws-s3';
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export class MyStack extends Stack {
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  constructor(scope: any, id: string, props?: StackProps) {
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    super(scope, id, props);
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    new Bucket(this, 'Data', { versioned: true });
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  }
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}

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# Store and retrieve a secret string parameter
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aws ssm put-parameter --name "/app/db/url" \
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  --value "postgres://..." --type SecureString
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aws ssm get-parameter --name "/app/db/url" --with-decryption

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// Deny launching EC2 outside specific regions
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{
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  "Version": "2012-10-17",
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  "Statement": [{
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    "Effect": "Deny",
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    "Action": "ec2:RunInstances",
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    "Resource": "*",
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    "Condition": {
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      "StringNotEquals": {
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        "aws:RequestedRegion": ["us-east-1", "eu-west-1"]
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      }
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    }
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  }]
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}

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# High-level CLI sketch
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aws s3api put-bucket-policy --bucket my-site --policy file://oac-policy.json
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aws cloudfront create-distribution --distribution-config file://dist.json
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aws route53 change-resource-record-sets \
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  --hosted-zone-id Z123 --change-batch file://alias.json

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aws ec2 create-flow-logs \
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  --resource-type VPC \
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  --resource-ids vpc-0abc1234 \
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  --traffic-type ALL \
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  --log-destination-type cloud-watch-logs \
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  --log-group-name /vpc/flowlogs \
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  --deliver-logs-permission-arn arn:aws:iam::111122223333:role/flowlogs-role

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# Programmatic access via the Cost Explorer API
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aws ce get-cost-and-usage \
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  --time-period Start=2026-05-01,End=2026-05-28 \
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  --granularity DAILY \
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  --metrics "UnblendedCost" \
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  --group-by Type=DIMENSION,Key=SERVICE