---
name: Cloudflare
layout: default
jsId: CLOUDFLAREAPI
---
# Cloudflare Provider

## Configuration

In your providers config json file you must provide your cloudflare.com api
username and access token:

{% highlight json %}
{
  "cloudflare.com":{
    "apikey": "your-cloudflare-api-key",
    "apiuser": "your-cloudflare-email-address"
  }
}
{% endhighlight %}

## Metadata

Record level metadata availible:
   * `cloudflare_proxy` ("on", "off", or "full")

Domain level metadata availible:
   * `cloudflare_proxy_default` ("on", "off", or "full")

Provider level metadata availible:
   * `ip_conversions`
   * `manage_redirects`: set to `true` to manage page-rule based redirects

What does on/off/full mean?

   * "off" disables the Cloudflare proxy
   * "on" enables the Cloudflare proxy (turns on the "orange cloud")
   * "full" is the same as "on" but also enables Railgun.  DNSControl will prevent you from accidentally enabling "full" on a CNAME that points to an A record that is set to "off", as this is generally not desired.

**Aliases:**

To make configuration files more readable and less prone to typos,
the following aliases are pre-defined:

{% highlight json %}
// Meta settings for individual records.
var CF_PROXY_OFF = {'cloudflare_proxy': 'off'};     // Proxy disabled.
var CF_PROXY_ON = {'cloudflare_proxy': 'on'};       // Proxy enabled.
var CF_PROXY_FULL = {'cloudflare_proxy': 'full'};   // Proxy+Railgun enabled.
// Per-domain meta settings:
// Proxy default off for entire domain (the default):
var CF_PROXY_DEFAULT_OFF = {'cloudflare_proxy_default': 'off'};
// Proxy default on for entire domain:
var CF_PROXY_DEFAULT_ON = {'cloudflare_proxy_default': 'on'};
{% endhighlight %}

The following example shows how to set meta variables with and without aliases:

{% highlight json %}
D('example.tld', REG_NAMECOM, DnsProvider(CFLARE),
    A('www1','1.2.3.11', CF_PROXY_ON),       // turn proxy ON.
    A('www2','1.2.3.12', CF_PROXY_OFF),      // default is OFF, this is a no-op.
    A('www3','1.2.3.13', {'cloudflare_proxy': 'on'}) // why would anyone do this?
);
{% endhighlight %}

## Usage

Example javascript:

{% highlight js %}
var REG_NAMECOM = NewRegistrar('name.com','NAMEDOTCOM');
var CFLARE = NewDnsProvider('cloudflare.com','CLOUDFLAREAPI');

// Example domain where the CF proxy abides by the default (off).
D('example.tld', REG_NAMECOM, DnsProvider(CFLARE),
    A('proxied','1.2.3.4', CF_PROXY_ON),
    A('notproxied','1.2.3.5'),
    A('another','1.2.3.6', CF_PROXY_ON),
    ALIAS('@','www.example.tld.', CF_PROXY_ON),
    CNAME('myalias','www.example.tld.', CF_PROXY_ON)
);

// Example domain where the CF proxy default is set to "on":
D('example2.tld', REG_NAMECOM, DnsProvider(CFLARE),
    CF_PROXY_DEFAULT_ON, // Enable CF proxy for all items unless otherwise noted.
    A('proxied','1.2.3.4'),
    A('notproxied','1.2.3.5', CF_PROXY_OFF),
    A('another','1.2.3.6'),
    ALIAS('@','www.example2.tld.'),
    CNAME('myalias','www.example2.tld.')
);
{%endhighlight%}

## Activation

DNSControl depends on a Cloudflare Global API Key that's available under "My Settings".

## New domains

If a domain does not exist in your CloudFlare account, DNSControl
will *not* automatically add it. You'll need to do that via the
control panel manually or via the `dnscontrol create-domains` command.

## Redirects

The cloudflare provider can manage Page-Rule based redirects for your domains. Simply use the `CF_REDIRECT` and `CF_TEMP_REDIRECT` functions to make redirects:

{% highlight js %}

// chiphacker.com is an alias for electronics.stackexchange.com

var CFLARE = NewDnsProvider('cloudflare.com','CLOUDFLAREAPI', {"manage_redirects": true}); // enable manage_redirects

D("chiphacker.com", REG_NAMECOM, DnsProvider(CFLARE),
    // must have A records with orange cloud on. Otherwise page rule will never run.
    A("@","1.2.3.4", CF_PROXY_ON),
    A("www", "1.2.3.4", CF_PROXY_ON)
    A("meta", "1.2.3.4", CF_PROXY_ON),

    // 302 for meta subdomain
    CF_TEMP_REDIRECT("meta.chiphacker.com/*", "https://electronics.meta.stackexchange.com/$1"),

    // 301 all subdomains and preserve path
    CF_REDIRECT("*chiphacker.com/*", "https://electronics.stackexchange.com/$2"),
);
{%endhighlight%}

Notice a few details:

1. We need an A record with cloudflare proxy on, or the page rule will never run.
2. The IP address in those A records may be mostly irrelevant, as cloudflare should handle all requests (assuming some page rule matches).
3. Ordering matters for priority. CF_REDIRECT records will be added in the order they appear in your js. So put catch-alls at the bottom.
