如何设置Cloudflare动态DNS

#要求 -版本7.1

[cmdletbinding()]
param (
    [parameter(Mandatory)]
    $Email,
    [parameter(Mandatory)]
    $Token,
    [parameter(Mandatory)]
    $Domain,
    [parameter(Mandatory)]
    $Record
)

#构建请求头。这些头将在整个脚本中使用。
$headers = @{
    "X-Auth-Email"  = $($Email)
    "Authorization" = "Bearer $($Token)"
    "Content-Type"  = "application/json"
}

#区域令牌测试
## 此块验证您的API密钥是否有效。
## 如果无效，则脚本将终止。

$uri = "https://api.cloudflare.com/client/v4/user/tokens/verify"

$auth_result = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($auth_result.result)) {
    Write-Output "API token validation failed. Error: $($auth_result.errors.message). Terminating script."
    #退出脚本
    return
}
Write-Output "API token validation [$($Token)] success. $($auth_result.messages.message)."
#区域结束

#区域获取区域ID
## 根据区域名称检索域的区域标识符。如果找不到标识符，则脚本将终止。
$uri = "https://api.cloudflare.com/client/v4/zones?name=$($Domain)"
$DnsZone = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($DnsZone.result)) {
    Write-Output "Search for the DNS domain [$($Domain)] return zero results. Terminating script."
    #退出脚本
    return
}
## 存储DNS区域ID
$zone_id = $DnsZone.result.id
Write-Output "Domain zone [$($Domain)]: ID=$($zone_id)"
#区域结束

#区域获取DNS记录
## 从Cloudflare检索现有的DNS记录详细信息。
$uri = "https://api.cloudflare.com/client/v4/zones/$($zone_id)/dns_records?name=$($Record)"
$DnsRecord = Invoke-RestMethod -Method GET -Uri $uri -Headers $headers -SkipHttpErrorCheck
if (-not($DnsRecord.result)) {
    Write-Output "Search for the DNS record [$($Record)] return zero results. Terminating script."
    #退出脚本
    return
}
## 存储DNS记录中的现有IP地址
$old_ip = $DnsRecord.result.content
## 存储DNS记录类型值
$record_type = $DnsRecord.result.type
## 存储DNS记录ID值
$record_id = $DnsRecord.result.id
## 存储DNS记录ttl值
$record_ttl = $DnsRecord.result.ttl
## 存储DNS记录proxied值
$record_proxied = $DnsRecord.result.proxied
Write-Output "DNS record [$($Record)]: Type=$($record_type), IP=$($old_ip)"
#区域结束

#区域获取当前公共IP地址
$new_ip = Invoke-RestMethod -Uri 'https://v4.ident.me'
Write-Output "Public IP Address: OLD=$($old_ip), NEW=$($new_ip)"
#区域结束

#区域更新动态DNS记录
## 将当前IP地址与DNS记录进行比较
## 如果当前IP地址与DNS记录IP地址不匹配，则更新DNS记录。
if ($new_ip -ne $old_ip) {
    Write-Output "The current IP address does not match the DNS record IP address. Attempt to update."
    ## 使用新的IP地址更新DNS记录
    $uri = "https://api.cloudflare.com/client/v4/zones/$($zone_id)/dns_records/$($record_id)"
    $body = @{
        type    = $record_type
        name    = $Record
        content = $new_ip
        ttl     = $record_ttl
        proxied = $record_proxied
    } | ConvertTo-Json

    $Update = Invoke-RestMethod -Method PUT -Uri $uri -Headers $headers -SkipHttpErrorCheck -Body $body
    if (($Update.errors)) {
        Write-Output "DNS record update failed. Error: $($Update[0].errors.message)"
        ## 退出脚本
        return
    }

    Write-Output "DNS record update successful."
    return ($Update.result)
}
else {
    Write-Output "The current IP address and DNS record IP address are the same. There's no need to update."
}
#区域结束

Resolve-DnsName -Name demo.lazyexchangeadmin.cyou

C:\CloudflareDDNS\Update-CloudflareDDNS.ps1 `
-Email '[email protected]' `
-Token 'kGW8n........eJl5a' `
-Domain 'lazyexchangeadmin.cyou' `
-Record 'demo.lazyexchangeadmin.cyou'

Resolve-DnsName -Name demo.lazyexchangeadmin.cyou

# 定义预定任务操作属性
## 输入 PowerShell 脚本路径
$scriptPath = 'C:\CloudflareDDNS\Update-CloudflareDDNS.ps1'
## Cloudflare 帐户的电子邮件地址
$Email = '[email protected]'
## Cloudflare API 令牌
$Token = 'kGW8n........eJl5a'
## DNS 域名
$Domain = 'lazyexchangeadmin.cyou'
## 要更新的 DNS 记录
$Record = 'demo.lazyexchangeadmin.cyou'

# 创建预定任务操作对象
$taskAction = New-ScheduledTaskAction `
    -Execute "pwsh.exe" `
    -Argument "-File $scriptPath -Email $Email -Token $Token -Domain $Domain -Record $Record"

# 创建一个新的预定任务触发器计划
## 触发器 = 每 5 分钟运行一次，持续 10 年。
$taskTrigger = New-ScheduledTaskTrigger `
-Once `
-At (Get-Date -Minute 0 -Second 0) `
-RepetitionInterval (New-TimeSpan -Minutes 5) `
-RepetitionDuration (New-TimeSpan -Days 3650)

# 在系统中注册计划任务。
## 计划任务名称
$TaskName = 'Update Cloudflare Dynamic DNS'
## 计划任务描述
$Description = 'Update Cloudflare DDNS Entry every 5 minutes'
## 创建计划任务
Register-ScheduledTask `
-TaskName $TaskName `
-Description $Description `
-Action $taskAction `
-Trigger $taskTrigger `
-User 'NT AUTHORITY\SYSTEM'