Terraform 설치

# yum install -y yum-utils
# yum-config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
# yum -y install terraform

# wget https://releases.hashicorp.com/terraform/1.2.3/terraform_1.2.3_linux_amd64.zip
# wget https://releases.hashicorp.com/terraform/1.4.6/terraform_1.4.6_linux_amd64.zip
# unzip terraform_1.2.3_linux_amd64.zip
# unzip terraform_1.4.6_linux_amd64.zip
# mv terraform /usr/local/bin/
# terraform -version

export AWS_ACCESS_KEY_ID=(your access key id)
export AWS_SECRET_ACCESS_KEY=(your secret access key)

# mkdir tf-test && cd $_
# vi main.tf
provider "aws" {
  region = "ap-northeast-2"
}

resource "aws_instance" "example" {
  ami                    = "ami-035da6a0773842f64"
  instance_type          = "t2.micro"
  vpc_security_group_ids = [aws_security_group.instance.id]

  user_data = <<-EOF
              #!/bin/bash
              yum install -y httpd
              systemctl enable --now httpd
              echo "<h1>example</h1>" > /var/www/html/index.html
              EOF

  tags = {
    Name = "terraform-example"
  }
}

resource "aws_security_group" "instance" {

  name = var.security_group_name

  ingress {
    from_port   = 80
    to_port     = 80
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  ingress {
    from_port   = 22
    to_port     = 22
    protocol    = "tcp"
    cidr_blocks = ["0.0.0.0/0"]
  }

  egress {
    from_port        = 0
    to_port          = 0
    protocol         = "-1"
    cidr_blocks      = ["0.0.0.0/0"]
  }

  tags = {
    Name = "tf-web"
  }

}

variable "security_group_name" {
  description = "The name of the security group"
  type        = string
  default     = "terraform-example-instance"
}

output "public_ip" {
  value       = aws_instance.example.public_ip
  description = "The public IP of the Instance"
}

terraform init # 플랫폼별 plugin 형태의 애플리케이션..?
terraform plan 
terraform apply # yes라는 커맨드도 입력해서 실행까지
terraform destroy

main.tf 에서 사용자데이터 수정 (<h1> 부분) 하니까 인스턴스가 ip도 바뀌고 껏다가 다시 켜진다. 근데 까보니까 h1태그 적용안됨
main.tf -> user_data에서 첫줄 EOF 아래에 # cloud-boothook 바꾸고 됨

date 맞추는 법

yum install -y rdate
rdate -s time.bora.net

Azure

# mkdir azure_cli && cd $_

# echo -e "[azure-cli]
name=Azure CLI
baseurl=https://packages.microsoft.com/yumrepos/azure-cli
enabled=1
gpgcheck=1
gpgkey=https://packages.microsoft.com/keys/microsoft.asc" | sudo tee /etc/yum.repos.d/azure-cli.repo

# yum install -y azure-cli