README.md

cdk-fargate-run-task

Define and run container tasks on AWS Fargate at once or by schedule.

sample

const app = new cdk.App();

const env = {
  account: process.env.CDK_DEFAULT_ACCOUNT,
  region: process.env.CDK_DEFAULT_REGION,
};

const stack = new cdk.Stack(app, 'run-task-demo-stack', { env });

// define your task
const task = new ecs.FargateTaskDefinition(stack, 'Task', { cpu: 256, memoryLimitMiB: 512 });

// add contianer into the task
task.addContainer('Ping', {
  image: ecs.ContainerImage.fromRegistry('busybox'),
  command: [
    'sh', '-c',
    'ping -c 3 google.com',
  ],
  logging: new ecs.AwsLogDriver({
    streamPrefix: 'Ping',
    logGroup: new LogGroup(stack, 'LogGroup', {
      logGroupName: `${stack.stackName}LogGroup`,
      retention: RetentionDays.ONE_DAY,
    }),
  }),
});

// deploy and run this task once
const runTaskAtOnce = new RunTask(stack, 'RunDemoTaskOnce', { task });

// or run it with schedule(every hour 0min)
new RunTask(stack, 'RunDemoTaskEveryHour', {
  task,
  cluster: runTaskAtOnce.cluster,
  runOnce: false,
  schedule: Schedule.cron({ minute: '0' }),
});

ECS Anywhere

Amazon ECS Anywhere allows you to run ECS tasks on external instances. To run external task once or on schedule:

const externalTask = new ecs.TaskDefinition(stack, 'ExternalTask', {
  cpu: '256',
  memoryMiB: '512',
  compatibility: ecs.Compatibility.EXTERNAL,
});

externalTask.addContainer('ExternalPing', {
  image: ecs.ContainerImage.fromRegistry('busybox'),
  command: [
    'sh', '-c',
    'ping -c 3 google.com',
  ],
  logging: new ecs.AwsLogDriver({
    streamPrefix: 'Ping',
    logGroup: new LogGroup(stack, 'ExternalLogGroup', {
      retention: RetentionDays.ONE_DAY,
      removalPolicy: cdk.RemovalPolicy.DESTROY,
    }),
  }),
});

// run it once on external instance
new RunTask(stack, 'RunDemoTaskFromExternal', {
  task: externalTask,
  cluster: existingCluster,
  launchType: LaunchType.EXTERNAL,
});

// run it by schedule  on external instance
new RunTask(stack, 'RunDemoTaskFromExternalSchedule', {
  task: externalTask,
  cluster: existingCluster,
  launchType: LaunchType.EXTERNAL,
  runAtOnce: false,
  schedule: Schedule.cron({ minute: '0' }),
});

Please note when you run task in EXTERNAL launch type, no fargate tasks will be scheduled. You will be responsible to register the external instances to your ECS cluster. See Registering an external instance to a cluster for more details.