Q. What Is Amazon S3?

-- Amazon Simple Storage Service is storage for the Internet. It is designed to make web-scale computing easier for developers. Amazon S3 has a simple web services interface that you can use to store and retrieve any amount of data, at any time, from anywhere on the web.

Step: 1. Create a new Policy to Access the target S3 Bucket : 
















-- Enter Policy Name, Description and the Policy Document as given below :

{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Effect": "Allow",
      "Action": [
        "s3:GetBucketLocation",
        "s3:ListAllMyBuckets"
      ],
      "Resource": "arn:aws:s3:::*"
    },
    {
      "Effect": "Allow",
      "Action": ["s3:ListBucket"],
      "Resource": ["arn:aws:s3:::bucket-name"]
    },
    {
      "Effect": "Allow",
      "Action": [
        "s3:PutObject",
        "s3:GetObject",
        "s3:DeleteObject"
      ],
      "Resource": ["arn:aws:s3:::bucket-name/*"]
    }
  ]
}




















Step: 2. Create a New Role using "Amazon EC2" Service Role Type :

-- Click on “Create new Role” and Select Role Type as Amazon EC2.

















-- Next select “s3access” policies to Attach.











-- Enter Role Name, Description as given below and click on “Create Role” button.




















-- The Attach Policy of the new Role should look like below:




















Step: 3. Attach IAM Role to the running Instance or Launching new Instance :

















-- Select Role name from drop-down box and click on “Apply” button.


















Step: 4. Mount S3 Bucket to an Instance :

-- Login to instance using console and follow the steps below :

# apt-get update -y
# apt-get install build-essential libfuse-dev libcurl4-openssl-dev libxml2-dev \
    mime-support automake libtool git
# cd /tmp
# git clone https://github.com/s3fs-fuse/s3fs-fuse.git
# cd s3fs-fuse/
# ./autogen.sh
# ./configure
# make
# make install
# mkdir /s3backups
# chmod 755 /s3backups

-- Now Mount the S3 Bucket using IAM Role :

# s3fs -o iam_role="EC2RoleForS3Access" bucket-name /s3backups
# df -Th

[OUTPUT]
Filesystem     Type         Size       Used  Avail   Use%  Mounted on
s3fs                 fuse.s3fs  256T     0         256T   0%      /s3backups

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