ECS service launching through created EC2 instance

Question

I have created my own EC2 instance in AWS. That AMI is AWS ECS optimized AMI for launching ecs service from my EC2 instance. I previously discussed the same thing. And tried with that approach. The link is below,

Microservice Deployment Using AWS ECS Service

I created my cluster and configured that cluster name when I am creating optimized AMI by following code snippet in advanced userdata section,

#!/bin/bash
echo ECS_CLUSTER=your_cluster_name >> /etc/ecs/ecs.config

I followed the documentation of cluster creation from following link,

https://docs.aws.amazon.com/AmazonECS/latest/developerguide/create_cluster.htmlecs

But, no result - when creating cluster and ECS task definitions it creates and launches into one EC2. And again creating another EC2 by specifying above code. So total 2 Ec2. I already created my own ECS optimized.

I am finding for launching ECS service from my own AMI (that I created). Actually I need to launch my ECS service from my Ec2 (I had created my machine Amazon optimized AMI).

The reason behind this requirement is I don't want to launch my services in machine that owned by others. I need to launch from my machine. And also I need to host my angular application in the same my machine. So I need control of my machine. How can I do this?

Can you elaborate on what you mean by "no result"? Are you saying your instance doesn't show up in your cluster or something else? — MrDuk
Can you check updated notes. When Creating cluster and services it launches into one AMI (us-east-1 - ami-28456852). When I am following steps for launching instances, It creating another Ec2 Instance. Link - docs.aws.amazon.com/AmazonECS/latest/developerguide/… . Adding cluster name in userdata section as mentioned above. It not loading into my own EC2 machine. That is my pblm. — Jacob
UserData is only executed during instance launch - if you're adding your cluster configuration after the instance has launched, it will have no effect. — MrDuk
Ok. Can you give any documentation URL for reference please for the steps that i need to follow? — Jacob

MrDuk MrDuk · Accepted Answer · 2018-02-09T15:34:09

Sounds like you just need to create a Launch Configuration. With this you can specify the User Data settings that should be applied when a host is setup.

After you create your Launch Configuration, create a new Auto Scaling Group based off of it (there's a drop-down to select the launch configuration you want to use).

From here, any new instances launched under that ASG will apply the settings you've configured in the associated Launch Configuration.

ECS service launching through created EC2 instance

1 Answers