在 bash 脚本中运行 AWS 服务会在尝试运行第二个命令时产生错误，我做错了什么吗？

Question

So I have a bash script that runs some AWS commands to spin up an ECS service, I then want to attach some autoscaling policies to it but I am getting an error. I'm not sure if it is anything to do with the AWS service CLI or I am running it incorrectly in bash, syntax wise it seems fine according to the AWS docs.

Here's the code:

aws ecs create-service \
      --cluster $1 \
      --service-name $2 \
      --task-definition $3:$4 \
      --desired-count $DESIRED_COUNT \
      --launch-type FARGATE \
      --platform-version LATEST \
      --network-configuration "awsvpcConfiguration={subnets=[${SUBNETS[0]}${SUBNETS[1]}${SUBNETS[2]}],securityGroups=[$SECURITY_GROUPS],assignPublicIp=ENABLED}" \
      --service-registries registryArn=$SERVICE_DISCOVERY_ARN \
      --load-balancers targetGroupArn=$BACKEND_TARGETGROUP,containerName=$BACKEND_CONTAINERNAME,containerPort=$BACKEND_CONTAINERPORT \
      --profile $PROFILE

    echo "============ Now creating $2 service auto-scaling policies ============"
    aws application-autoscaling register-scalable-target \
      --service-namespace ecs \
      --scalable-dimension ecs:service:DesiredCount \
      --resource-id "service/$CLUSTER/$BACKEND_SERVICE" \
      --min-capacity $MINIMUM_APP_COUNT --max-capacity $MAXIMUM_APP_COUNT
    
    aws application-autoscaling put-scaling-policy 
      --service-namespace ecs \
      --scalable-dimension ecs:service:DesiredCount \
      --resource-id "service/$CLUSTER/$BACKEND_SERVICE" \
      --policy-name "${CLUSTER}_scale_up" --policy-type StepScaling \
      --step-scaling-policy-configuration file://stepScalingUpPolicy.json
    
    aws application-autoscaling put-scaling-policy 
      --service-namespace ecs \
      --scalable-dimension ecs:service:DesiredCount \
      --resource-id "service/$CLUSTER/$BACKEND_SERVICE" \
      --policy-name "${CLUSTER}_scale_down" --policy-type StepScaling \
      --step-scaling-policy-configuration file://stepScalingDownPolicy.json

Image is of error on my pipeline after running the first aws service. [1]: https://i.stack.imgur.com/5PxBW.png

Answer 1

You are missing slashes \ after two commands. It should be

 aws application-autoscaling put-scaling-policy \

and

aws application-autoscaling put-scaling-policy \

Also make sure you don't have any white characters (spaces or tabs) after \\ .