[AWS](EN) Create, list and delete EC2 instance using AWS CLI

Create, list and delete EC2 instance using AWS CLI

Environment and Prerequisite

• Ubuntu 18.04
• AWS CLI
• Bash shell(/bin/bash)

Process

1. Install AWS CLI
2. Basic Setting(Configuration and Credential File Settings)
3. EC2 Instance Create, List and Delete

Install AWS CLI

Package update and upgrade

sudo apt-get update -y && sudo apt-get upgrade -y

Install pip3

sudo apt-get install python3-pip

Install AWS CLI

• Logout and login again if aws command is not work.

pip3 install awscli --upgrade --user

Check AWS CLI version

$ aws --version
aws-cli/1.16.310 Python/3.6.9 Linux/4.15.0-72-generic botocore/1.13.46

Basic Setting(Configuration and Credential File Settings)

Before setting

• First, We need user, keys(access and secret) and group to use AWS CLI
• Creating user reference is on https://docs.aws.amazon.com/IAM/latest/UserGuide/getting-started_create-admin-group.html
• Generating key reference is on https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html#cli-quick-configuration-creds
• Creating group reference is on https://docs.aws.amazon.com/IAM/latest/UserGuide/id_groups_create.html
• Give admin access(AdministratorAccess) to test user group.

aws configure

$ aws configure
AWS Access Key ID [None]: [YOUR KEY]
AWS Secret Access Key [None]: [YOUR KEY]
Default region name [None]: ap-northeast-2
Default output format [None]: json

Check ~/.aws/credentials setting

$ cat ~/.aws/credentials
[default]
aws_access_key_id = [YOUR KEY]
aws_secret_access_key = [YOUR KEY]

Check ~/.aws/config 설정 확인 setting

$ cat ~/.aws/config
[default]
region = ap-northeast-2
output = json

EC2 Instance Create, List and Delete

Before setting

• Consider that there is already made EC2 security group
• You can make security group in aws website. My security group opens only ssh port in inbound and opens all ports in outbound.

Create key pair

• Store key pair in your computer which is made from below command.
• You can use your own key pair. However, public key should be in AWS and private key should be kept in your computer.

aws ec2 create-key-pair --key-name TestKeyPair --query 'KeyMaterial' --output text > TestKeyPair.pem

Create EC2 instance

• --image-id: Instance image ID
• ami-082bdb3b2d54d5a19: Ubuntu Server 16.04 LTS (HVM), SSD Volume Type
• --count: Number of instances
• --key-name: Key pair key
• TestKeyPair: The key pair that we made above
• --security-group-ids: Security group ID

aws ec2 run-instances --image-id ami-082bdb3b2d54d5a19 --count 1 --instance-type t2.micro --key-name TestKeyPair --security-group-ids [YOUR SECURITY GROUP ID]

List EC2 instances

• --filters: It is filter for instances. In this example, it gets instances of which instance-type is t2.micro.
• --query: It is option for showing results of instances. In this example, it shows only ID of instances.

aws ec2 describe-instances --filters "Name=instance-type,Values=t2.micro" --query "Reservations[].Instances[].InstanceId"

Connect to EC2 instance

• Set key file permission

chmod 400 TestKeyPair.pem

• Access to instance using ssh

ssh -i "TestKeyPair.pem" [USER NAME]@[PUBLIC IP or PUBLIC AWS DNS]

Delete EC2 instance

• --instance-ids: Delete using instance ID

aws ec2 terminate-instances --instance-ids [YOUR INSTANCE ID]

Reference

• https://www.osradar.com/install-aws-cli-ubuntu-18-04/
• https://docs.aws.amazon.com/IAM/latest/UserGuide/getting-started_create-admin-group.html
• https://docs.aws.amazon.com/cli/latest/userguide/cli-chap-configure.html#cli-quick-configuration-creds
• https://docs.aws.amazon.com/IAM/latest/UserGuide/id_groups_create.html
• https://docs.aws.amazon.com/cli/latest/userguide/cli-services-ec2-sg.html
• https://docs.aws.amazon.com/cli/latest/userguide/cli-services-ec2-instances.html#launching-instances