AWS/Quick Reference

Quick Reference | AWS CLI | CloudFormation

Logging in to EC2 instance

When creating the EC2 instance, you should be given a SSH key (.pem), you will use this to log into the instance. Most likely, you will need to change the file permissions of the SSH key. I also like to move it to a common location.

~$ mv /home/r00t/downloads/grafana01.pem /home/r00t/.ssh/
~$ chmod 600 /home/r00t/.ssh/grafana01.pem

The Username will depend on the type of AMI image used:

AMI Type	Username
Amazon Linux 2 (AMI)	ec2-user
Centos AMI	centos
Debian AMI	admin or root
Fedora AMI	ec2-user or fedora
RHEL AMI	ec2-user or root
Suse AMI	ec2-user or root
Ubuntu AMI	ubuntu

~$ ssh -i ~/.ssh/grafana01.pem ec2-user@3.27.115.207

Cloud Formation

create an S3 bucket with a lifecycle policy. export the name to be used outside of Cloud Formation. It also has a Public read ACL, making the bucket contents available to the public (non-authenticated users)

{ 
    "AWSTemplateFormatVersion": "2010-09-09", 
    "Resources": { 
        "S3Bucket": { 
            "Type": "AWS::S3::Bucket", 
            "Properties": {
                "AccessControl" : "PublicRead",
                "LifecycleConfiguration": { 
                    "Rules": [ 
                        { 
                            "Status": "Enabled", 
                            "ExpirationInDays": "7" 
                        } 
                    ] 
                } 
            } 
        } 
    }, 
    "Outputs": { 
        "S3BucketName": { 
            "Value": { 
                "Ref": "S3Bucket" 
            }, 
            "Export": { 
                "Name": {"Fn::Sub": "${AWS::StackName}-S3BucketName"} 
            }  
        } 
    } 
} 

CodeBuild

Deploy Cloud formation template and then copy directory recursively to S3 bucket.

version: 0.2 
 
phases: 
  install: 
    runtime-versions: 
      python: 3.7 
    commands: 
      - echo $HOSTNAME 
      - uname -a 
      - gitdir=$(pwd) 
      - branch=$(basename $CODEBUILD_SOURCE_VERSION) 
      - stackname="a$CODEBUILD_PROJECT_UUID" 
      - printenv 
      - aws cloudformation deploy --template-file $gitdir/test.json --stack-name $stackname 
      - s3bucketname=$(aws cloudformation describe-stacks --stack-name $stackname | jq '.Stacks[0].Outputs[0].OutputValue' | sed s'/"//g') 
      - aws s3 mv $gitdir s3://$s3bucketname/$branch/ --recursive