抢占式实例搭建 FRP 服务

出差需求增加时，FRP 服务需要更新到最近的地域，降低延迟。

1. 安装 FRP 服务

   # 获取安装包
   wget https://github.com/fatedier/frp/releases/download/v0.53.0/frp_0.53.0_linux_amd64.tar.gz
   # 解压缩包
   ls
   tar -xzvf frp_0.53.0_linux_amd64.tar.gz
   # 改名文件夹
   mv frp_0.53.0_linux_amd64 frp
   cd frp
   # 修改frp服务端配置文件
   vim frps.ini
   [common]
   bind_port = 7000
   kcp_bind_port = 7000
   bind_udp_port = 7001
   token = J_
   dashboard_port = 7500
   dashboard_user = admin
   dashboard_pwd = J_
   enable_prometheus = true
   # 后台运行
   nohup ./frps -c frps.ini >/dev/null 2>&1 &

2. 结合抢占式实例特点，设置开机自动运行 FRP 服务，同步 IP 到域名，减少额外操作
   配置 FRP

   # 创建 systemd 服务文件
   sudo nano /etc/systemd/system/frps.service
   # 配置文件内容
   [Unit]
   Description=FRP Server Service
   After=network.target
   [Service]
   Type=simple
   ExecStart=/root/frp/frps -c /root/frp/frps.ini
   Restart=on-failure
   User=root
   WorkingDirectory=/root/frp
   [Install]
   WantedBy=multi-user.target
   # 启用并启动服务
   sudo systemctl enable frps.service
   sudo systemctl start frps.service
   sudo systemctl status frps.service

   配置 IP 同步

   import json
   import requests
   import time
   from tencentcloud.common import credential
   from tencentcloud.common.profile.client_profile import ClientProfile
   from tencentcloud.common.profile.http_profile import HttpProfile
   from tencentcloud.common.exception.tencent_cloud_sdk_exception import TencentCloudSDKException
   from tencentcloud.dnspod.v20210323 import dnspod_client, models
   def get_public_ip():
    while True:
        try:
            response = requests.get('https://api.ipify.org?format=json')
            response.raise_for_status()
            return response.json()['ip']
        except requests.RequestException:
            time.sleep(5)  # 如果请求失败，等待5秒钟
   def update_dns_record(client, ip_value):
    try:
        req = models.ModifyRecordRequest()
        params = {
            "Domain": "Domain", # 主域名
            "SubDomain": "SubDomain", # 子域名
            "RecordType": "A",
            "RecordLine": "默认",
            "Value": ip_value,
            "RecordId": x # api查询
        }
        req.from_json_string(json.dumps(params))
        resp = client.ModifyRecord(req)
        print(resp.to_json_string())
    except TencentCloudSDKException as err:
        print(err)
   # 实例化一个认证对象，入参需要传入腾讯云账户 SecretId 和 SecretKey
   cred = credential.Credential("Id", "Key")
   # 实例化一个http选项
   httpProfile = HttpProfile()
   httpProfile.endpoint = "dnspod.tencentcloudapi.com"
   # 实例化一个client选项
   clientProfile = ClientProfile()
   clientProfile.httpProfile = httpProfile
   # 实例化要请求产品的client对象,clientProfile是可选的
   client = dnspod_client.DnspodClient(cred, "", clientProfile)
   # 初始IP地址设置为空字符串
   last_ip = ""
   while True:
    current_ip = get_public_ip()
    if current_ip != last_ip:
        print(f"IP has changed to {current_ip}. Updating DNS record...")
        update_dns_record(client, current_ip)
        last_ip = current_ip
    else:
        print(f"IP has not changed. Next check in 5 minutes.")
    time.sleep(300)  # 每5分钟检查一次

   配置配置 IP 同步开机自启动

   # 创建开机服务
   sudo nano /etc/systemd/system/update_dns.service
   # 修改开机文件
   [Unit]
   Description=Update DNS Record Service
   After=network.target
   [Service]
   Type=simple
   ExecStart=/usr/bin/python3 <your-script-path>
   Restart=on-failure
   [Install]
   WantedBy=multi-user.target
   # 启用并启动服务
   sudo systemctl enable update_dns.service
   sudo systemctl start update_dns.service
   sudo systemctl status update_dns.service

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