ECS Execをちょっと便利にするスクリプト

稼働中のECSタスクを aws-cli で動的に取得し、稼働中のコンテナにECS Execを実行できるスクリプトのメモ。

前提

peco が必要

brew install peco

bashバージョン

Bash

#!/bin/bash

function ecs-exec() {
  cluster_arn=$(aws ecs list-clusters | jq -r '.clusterArns[]' | peco --prompt 'cluster_arn > ')
  if [ -z "$cluster_arn" ]; then
    return
  fi

  service_arn=$(aws ecs list-services --cluster "$cluster_arn" | jq -r '.serviceArns[]' | peco --prompt 'service_arn > ')
  if [ -z "$service_arn" ]; then
    return
  fi

  task_arn=$(aws ecs list-tasks --cluster "$cluster_arn" --service-name "$service_arn" | jq -r '.taskArns[]' | peco --prompt 'task_arn > ')
  if [ -z "$task_arn" ]; then
    return
  fi

  container_name=$(aws ecs describe-tasks --cluster "$cluster_arn" --tasks "$task_arn" --query 'tasks[].containers[].name' | jq -r '.[]' | peco --prompt 'container_name > ')
  if [ -z "$container_name" ]; then
    return
  fi

  aws ecs execute-command \
    --cluster "$cluster_arn" \
    --task "$task_arn" \
    --container "$container_name" \
    --interactive \
    --command "/bin/bash"
}

fish shellバージョン

fish

#!/usr/local/bin/fish

function ecs-exec
  set cluster_arn (aws ecs list-clusters | jq -r '.clusterArns[]' | peco --prompt 'cluster_arn > ')
  if [ -z "$cluster_arn" ]
    return
  end

  set service_arn (aws ecs list-services --cluster $cluster_arn | jq -r '.serviceArns[]' | peco --prompt 'service_arn > ')
  if [ -z "$service_arn" ]
    return
  end

  set task_arn (aws ecs list-tasks --cluster $cluster_arn --service-name $service_arn | jq -r '.taskArns[]' | peco --prompt 'task_arn > ')
  if [ -z "$task_arn" ]
    return
  end

  set container_name (aws ecs describe-tasks --cluster $cluster_arn --tasks $task_arn --query 'tasks[].containers[].name' | jq -r '.[]' | peco --prompt 'container_name > ')
  if [ -z "$container_name" ]
    return
  end

  aws ecs execute-command \
    --cluster $cluster_arn \
    --task $task_arn \
    --container $container_name \
    --interactive \
    --command "/bin/bash"
end