1. AWS关键问题：

• 如何创建一个EC2实例并连接到它？

import boto3

ec2 = boto3.resource('ec2')

instance = ec2.create_instances(
    ImageId='ami-xxxxxxxx',
    MinCount=1,
    MaxCount=1,
    InstanceType='t2.micro'
)[0]

instance.wait_until_running()

print('Instance ID:', instance.id)
print('Public IP:', instance.public_ip_address)

• 如何创建一个S3存储桶并上传文件？

import boto3

s3 = boto3.resource('s3')

bucket = s3.create_bucket(Bucket='my-bucket')

bucket.upload_file('myfile.txt', 'myfile.txt')

2. Ansible关键问题：

• 如何使用Ansible部署一个Web应用程序？

# playbook.yml
- name: Deploy Web App
  hosts: web_servers
  tasks:
    - name: Install required packages
      apt:
        name: "{{ item }}"
        state: present
      with_items:
        - nginx
        - python3

    - name: Copy web app files
      copy:
        src: /path/to/webapp
        dest: /var/www/html

    - name: Ensure NGINX is running
      service:
        name: nginx
        state: started

• 如何使用Ansible配置远程服务器的SSH密钥登录？

# playbook.yml
- name: Configure SSH key login
  hosts: all
  tasks:
    - name: Copy public key to authorized_keys
      authorized_key:
        user: "{{ ansible_user }}"
        key: "{{ lookup('file', '~/.ssh/id_rsa.pub') }}"

3. Terraform关键问题：

• 如何使用Terraform创建一个EC2实例？

# main.tf
provider "aws" {
  access_key = "XXXXXXXXXXXXXXXXXXXX"
  secret_key = "XXXXXXXXXXXXXXXXXXXX"
  region     = "us-west-2"
}

resource "aws_instance" "example" {
  ami           = "ami-xxxxxxxx"
  instance_type = "t2.micro"
}

• 如何使用Terraform创建一个S3存储桶？

# main.tf
provider "aws" {
  access_key = "XXXXXXXXXXXXXXXXXXXX"
  secret_key = "XXXXXXXXXXXXXXXXXXXX"
  region     = "us-west-2"
}

resource "aws_s3_bucket" "example" {
  bucket = "my-bucket"
}

请注意，在使用这些代码示例之前，你需要替换其中的占位符（如AMI ID、密钥等），以适应你的特定环境和需求。