AWS Lightsail IP 地址更换 Python 脚本

以下是一个使用 Python 编写的 AWS Lightsail 更换 IP 地址的脚本：

import boto3
import time

def get_instance_id():
    client = boto3.client('lightsail', region_name='us-west-2')
    response = client.get_instances()
    instances = response['instances']
    
    for instance in instances:
        if instance['state']['name'] == 'running':
            return instance['name']
    
    return None

def create_static_ip():
    client = boto3.client('lightsail', region_name='us-west-2')
    response = client.allocate_static_ip()
    return response['staticIp']['name']

def attach_static_ip(instance_id, static_ip):
    client = boto3.client('lightsail', region_name='us-west-2')
    response = client.attach_static_ip(
        staticIpName=static_ip,
        instanceName=instance_id
    )
    return response

def detach_static_ip(static_ip):
    client = boto3.client('lightsail', region_name='us-west-2')
    response = client.detach_static_ip(
        staticIpName=static_ip
    )
    return response

def release_static_ip(static_ip):
    client = boto3.client('lightsail', region_name='us-west-2')
    response = client.release_static_ip(
        staticIpName=static_ip
    )
    return response

def wait_for_running(instance_id):
    client = boto3.client('lightsail', region_name='us-west-2')
    while True:
        response = client.get_instance_state(
            instanceName=instance_id
        )
        state = response['state']['name']
        if state == 'running':
            break
        time.sleep(5)

def main():
    instance_id = get_instance_id()
    if not instance_id:
        print('No running instance found')
        return
    
    current_ip = None
    static_ip = None
    
    try:
        # 获取当前实例的静态IP
        client = boto3.client('lightsail', region_name='us-west-2')
        response = client.get_instance(instanceName=instance_id)
        current_ip = response['instance']['publicIpAddress']
        
        # 创建一个新的静态IP
        static_ip = create_static_ip()
        
        # 将新的静态IP分配给实例
        attach_static_ip(instance_id, static_ip)
        
        # 等待实例重新启动
        wait_for_running(instance_id)
        
        # 获取新的静态IP地址
        response = client.get_instance(instanceName=instance_id)
        new_ip = response['instance']['publicIpAddress']
        
        print(f'Old IP: {current_ip}')
        print(f'New IP: {new_ip}')
    except Exception as e:
        print(f'Error: {str(e)}')
    finally:
        if current_ip and static_ip:
            # 将新的静态IP从实例中分离
            detach_static_ip(static_ip)
            
            # 释放静态IP
            release_static_ip(static_ip)

if __name__ == '__main__':
    main()

请确保安装了 AWS SDK for Python（Boto3），并将脚本中的region_name参数设置为您实际使用的区域。此脚本将执行以下操作：

1. 获取当前正在运行的实例的 ID。
2. 获取当前实例的公共 IP 地址。
3. 创建一个新的静态 IP 地址。
4. 将新的静态 IP 地址分配给实例。
5. 等待实例重新启动。
6. 获取新的静态 IP 地址。
7. 打印旧 IP 地址和新 IP 地址。
8. 将新的静态 IP 地址从实例中分离。
9. 释放静态 IP 地址。

请注意，此脚本假设您在 us-west-2 区域使用 AWS Lightsail。如果您使用其他区域，请相应地修改代码中的region_name参数。