Stopping task on AWS ECS via CLI (program output as argument input bash)

Question

I'm trying to kill a task in ECS via the CLI.

I can fetch the task name by executing:

aws ecs list-tasks --cluster "my-cluster" --service-name "my-service" | jq .taskArns[0]

which outputs:

"arn:aws:ecs:REGION:ACCOUNT-ID:task/TASK-GUID"

the full ARN of the task as a string (I have a global defaulting output to JSON).

I can kill the task by executing:

aws ecs stop-task --cluster "my-cluster" --task "task-arn"

However when I try and combine it:

aws ecs stop-task --cluster "my-cluster" --task $(aws ecs list-tasks --cluster "my-cluster" --service-name "my-service" | jq .taskArns[0])

I get:

An error occurred (InvalidParameterException) when calling the StopTask operation: taskId longer than 36.

I know this is probably bash program output/argument input interpolation but I've looked that up and cannot get to the bottom of it.

Answer 1

AWS cli 基本上内置了 jq，因此查询任务 arn 的更好（更简单）方法是：

aws ecs list-tasks --cluster "my-cluster" --service "my-service" --output text --query taskArns[0]

Answer 2

Maybe that helps someone:

Killing task with unique task definition name:

OLD_TASK_ID=$(aws ecs list-tasks --cluster ${ecsClusterName} --desired-status RUNNING --family ${nameTaskDefinition} | egrep "task/" | sed -E "s/.*task\/(.*)\"/\1/")
aws ecs stop-task --cluster ${ecsClusterName} --task ${OLD_TASK_ID}

Killing multiple tasks (same task definition name but different task ids):

OLD_TASK_IDS=$(aws ecs list-tasks --cluster ${ecsClusterName} --desired-status RUNNING --family ${nameTaskDefinition} | egrep "task/" | sed -E "s/.*task\/(.*)\"/\1/" | sed -z 's/\n/ /g')
IFS=', ' read -r -a array <<< "$OLD_TASK_IDS"
for element in "${array[@]}"
do
    aws ecs stop-task --cluster ${ecsClusterName} --task ${element}
done

Answer 3

One-liner command to stop tasks in cluster/service

for taskarn in $(aws ecs list-tasks --cluster ${YOUR_CLUSTER} --service ${YOUR_SERVICE} --desired-status RUNNING --output text --query 'taskArns'); do aws ecs stop-task --cluster ${YOUR_CLUSTER} --task $taskarn; done;

Answer 4

One-liner version of nathanpecks great answer:

aws ecs stop-task --cluster "my-cluster" --task $(aws ecs list-tasks --cluster "my-cluster" --service "my-service" --output text --query taskArns[0])