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AWS Notes

Initialising EC2 with userdata script​

This guide will help you to initialise the EC2 instance with ngnix when configuring the EC2 instance.

When creating the instance insert the following script in

Advance Settings > User data 

#!/bin/bash
apt-get update
apt-get install -y nginx awscli curl redis-server certbot python3-certbot-nginx python3-pip build-essential libssl-dev libffi-dev python3-venv wget vim
systemctl start nginx
systemctl enable nginx
systemctl reload ngnix

## Skip redis if not needed
systemctl start redis-server
systemctl enable redis-server

This script will install other dependencies as well which are suitable when initialising the instance the first time.

S3 Single Bucket Access policy​

This policy allows the role with only single bucket access.

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket",
        "s3:ListBucketMultipartUploads",
        "s3:GetBucketLocation"
      ],
     "Resource": [
        "arn:aws:s3:::<s3-bucket-name>"
      ]
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:PutObject",
        "s3:GetObject",
        "s3:DeleteObject",
        "s3:PutObjectAcl",
        "s3:ListBucketMultipartUploads",
        "s3:ListMultipartUploadParts",
        "s3:AbortMultipartUpload",
        "s3:GetEncryptionConfiguration"
      ],
      "Resource": [
          "arn:aws:s3:::<s3-bucket-name>,
         "arn:aws:s3:::<s3-bucket-name>/*"
      ]
    }
  ]
}