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cloud engineer

accounts

AWS List Account Aliases

Here’s how to list account aliases. I have four profiles in my credentials. I’m looping through all four and printing the aliases.

#!/bin/bash
file='results-aws-account-aliases.txt'
> $file
declare -a account=("default" "one" "two" "three")
for i in "${account[@]}"
do
    echo '----------------------' >> $file
    echo 'Account: '$i >> $file
    aws iam list-account-aliases \
    --profile $i 
done

Git Clone Multiple Accounts

How to clone repositories with multiple Github accounts.

git clone git@github.com-yourgitaccount:yourgitaccount/myrepo.git

AWS S3 Sync Between Accounts

Here’s how to sync S3 buckets between 2 different AWS accounts. Assuming buckets are already created.

  1. Setup bucket permissions in Account A
  2. Setup IAM user with permissions in Account B
  3. Setup bucket permissions in Account B
  4. Run S3 sync from Account B.

Account A bucket permissions. Account and user are from Account B.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "DelegateS3Access",
            "Effect": "Allow",
            "Principal": {"AWS": "arn:aws:iam::222222222222:user/Jane"},
            "Action": ["s3:ListBucket","s3:GetObject"],
            "Resource": [
                "arn:aws:s3:::awsexamplesourcebucket/*",
                "arn:aws:s3:::awsexamplesourcebucket"
            ]
        }
    ]
}

Create IAM user (Jane) in Account B

aws iam create-user --user-name Jane

Give IAM user (Jane) access to both buckets.

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:GetObject"
            ],
            "Resource": [
                "arn:aws:s3:::awsexamplesourcebucket",
                "arn:aws:s3:::awsexamplesourcebucket/*"
            ]
        },
        {
            "Effect": "Allow",
            "Action": [
                "s3:ListBucket",
                "s3:PutObject",
                "s3:PutObjectAcl"
            ],
            "Resource": [
                "arn:aws:s3:::awsexampledestinationbucket",
                "arn:aws:s3:::awsexampledestinationbucket/*"
            ]
        }
    ]
}

Sync the buckets

aws s3 sync s3://awsexamplesourcebucket s3://awsexampledestinationbucket