AWS ECS Error when running task: No Container Instances were found in your cluster

Question

I'm trying to deploy a Docker container image to AWS using ECS, but the EC2 instance is not being created. I have scoured the internet looking for an explanation as to why I'm receiving the following error: "A client error (InvalidParameterException) occurred when calling the RunTask operation: No Container Instances were found in your cluster." Here are my steps: 1. Pushed a docker image FROM Ubuntu to my Amazon ECS repo. 2. Registered an ECS Task Definition: aws ecs register-task-definition --cli-input-json file://path/to/my-task.json 3. Ran the task: aws ecs run-task --task-definition my-task Yet, it fails. Here is my task: { "family": "my-task", "containerDefinitions": [ "environment": [], "name": "my-container", "image": "my-namespace/my-image", "cpu": 10, "memory": 500, "portMappings": [ "containerPort": 8080, "hostPort": 80 ], "entryPoint": [ "java", "-jar", "my-jar.jar" ], "essential": true } I have also tried using the management console to configure a cluster and services, yet I get the same error. How do I configure the cluster to have ec2 instances, and what kind of container instances do I need to use? I thought this whole process was to create the EC2 instances, to begin with!! Select the correct answer from above options

Answer 1

There are two ways, First and the simpler way is to create an internet gateway and connect it to the VPC used by the cluster. So, to solve this you have to update your VPC’s route table: 0.0.0.0/0 igw-name If the simple way didn’t work, you can follow this procedure: In the EC2 dashboard, first click on launch instance Now, check for ecs-optimized in the Community AMIs, select whichever AMIs type fits for your project. So, select one and click next. In Configure Instance Details, click on the create new IAM role link and create a role called ecsInstanceRole. AmazonEC2ContainerServiceforEC2Role - Attach this policy to that role Finally, finish configuring you ECS instance. If it is a web server make sure to provide access to port 80 in your security group.