ecs

#!/bin/bash
#Purpose: Installation of ECS-AGENT, ec2 instance joins the ECS Cluster
# Note on the SG (security group) open the http port 80
mkdir -p /etc/ecs
touch /etc/ecs/ecs.config
echo ECS_CLUSTER=ecs-demo > /etc/ecs/ecs.config




# Update the packages

sudo yum install -y docker
sudo service docker start
sudo usermod -aG docker $USER

sudo yum install -y ecs-init
sudo stop ecs   2>&1   > /dev/null
sudo start ecs

#Note: ecs agent will not start unless docker daemon will not start & running


# To check the logs
# cd /var/log/ecs/
# tail -f ecs*

# ECS_endpoints

# ecs agent listen on port 51678

sudo yum install -y jq

#Note ECS Cluster default port is 51678

curl http://localhost:51678/v1/metadata | jq

# Check the tasks metadata

curl http://localhost:51678/v1/tasks | jq



##End




# Creating an SSH Keypair

#OSX / Linux: Create a keypair

1. aws ec2 create-key-pair --key-name Linux-Academy --query 'KeyMaterial' \
--output text > ~/.ssh/Linux-Academy.pem

2. chmod 400 ~/.ssh/Linux-Academy.pem

# Verify the keypair has been created

3. aws ec2 describe-key-pairs --key-name Linux-Academy

# (Optionally)Delete the keypair

4. aws ec2 delete-key-pair --key-name Linux-Academy

# List IAM users

5. aws iam list-users


############################################# ECS Command Line #############################################################################

# Deep Dive with Amazon ECS
# Clusters
# Create a cluster (Note: It will use FarGate by default)

aws ecs create-cluster --cluster-name deepdive

#List all clusters

aws ecs list-clusters

# A deeper look into the cluster's state

aws ecs describe-clusters --clusters deepdive

# (Optionally)Delete the cluster

aws ecs delete-cluster --cluster deepdive

# ● Do not delete it now unless you're experimenting on your own

# List IAM users

5. aws iam list-users

# Create the S3 bucket

6. aws s3api create-bucket --bucket cloudelligent-learning-ecs

# Copy the ECS config file you downloaded to the S3 bucket

7. aws s3 cp ecs.config s3://cloudelligent-learning-ecs/ecs.config

# Verify the ECS config is in the S3 bucket

8. aws s3 ls s3://cloudelligent-learning-ecs



### ecs command line ###

# https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/iam-roles-for-amazon-ec2.html

# https://aws.amazon.com/premiumsupport/knowledge-center/sftp-iam-user-cli/

aws iam create-instance-profile --instance-profile-name Linux-Academy-ECS-Instance-Role

aws iam create-role --role-name Linux-Academy-ECS-Instance-Role --assume-role-policy-document file://ec2-trust-relationship.json --description "EC2 Access"

# Note: Attaching AWS Managed Policy ARN is fixed

aws iam attach-role-policy --role-name Linux-Academy-ECS-Instance-Role --policy-arn arn:aws:iam::aws:policy/service-role/AmazonEC2ContainerServiceforEC2Role

aws iam attach-role-policy --role-name Linux-Academy-ECS-Instance-Role --policy-arn arn:aws:iam::aws:policy/AmazonS3ReadOnlyAccess

# Add the s3access role to the s3access-profile instance profile.

aws iam add-role-to-instance-profile --instance-profile-name Linux-Academy-ECS-Instance-Role --role-name Linux-Academy-ECS-Instance-Role




cat <<EOF >ec2-trust-relationship.json
{
  "Version": "2008-10-17",
  "Statement": [
    {
      "Sid": "",
      "Effect": "Allow",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Action": "sts:AssumeRole"
    }
  ]
}
EOF

# Create a keypair

aws ec2 create-key-pair --key-name Linux-Academy --query 'KeyMaterial' --output text > ~/.ssh/Linux-Academy.pem

# Create a s3 bucket

aws s3 mb s3://cloudelligent-ecs-learning
OR
aws s3api create-bucket --bucket cloudelligent-ecs-learning

aws s3 cp ecs.config s3://cloudelligent-ecs-learning/
aws s3 ls s3://cloudelligent-ecs-learning


aws ec2 run-instances --image-id ami-2b3b6041 --count 1 \
--instance-type t2.micro --iam-instance-profile Name=Linux-Academy-ECS-Instance-Role \
--key-name Linux-Academy --subnet-id subnet-0703816245a8a7457    \
--user-data file://copy-ecs-config-to-s3

# Get EC2 instance status

aws ec2 describe-instance-status --instance-id i-0eb3791217abd83ef

# Verify the EC2 instance is now part of the deepdive cluster

aws ecs list-container-instances --cluster deepdive

# Terminate EC2 instance

 aws ec2 terminate-instances --instance-ids i-0eb3791217abd83ef

#END