Update Blogger DNS configuration (#293)

Author: sbastn

services/blogger/config.json

@@ -2,16 +2,41 @@
   "config": {
     "name": "blogger",
     "label": "Blogger",
-    "description": "Use Blogger for your blog.",
-    "default-subdomain": "www",
+    "description": "Connect your domain to your Blogger blog.",
     "category": "blogging"
   },
+  "fields": [
+    {
+      "name": "blog_subdomain",
+      "label": "Blog Subdomain",
+      "description": "The subdomain you want to use for your blog, such as www or blog.",
+      "example": "www"
+    },
+    {
+      "name": "security_name",
+      "label": "Security CNAME Name",
+      "description": "The short host value Blogger shows when you set up a custom domain.",
+      "example": "hqzzzn56a3ri"
+    },
+    {
+      "name": "security_target",
+      "label": "Security CNAME Target",
+      "description": "The destination Blogger shows for the security CNAME.",
+      "example": "gv-oc7x5vzzzqxirt.dv.googlehosted.com"
+    }
+  ],
   "records": [
     {
+      "name": "{{blog_subdomain}}",
       "type": "CNAME",
       "content": "ghs.google.com",
       "ttl": 3600
+    },
+    {
+      "name": "{{security_name}}",
+      "type": "CNAME",
+      "content": "{{security_target}}",
+      "ttl": 3600
     }
   ]
 }
-

services/blogger/instructions.md

@@ -1,4 +1,7 @@
-In order to use a custom domain name with Blogger follow the steps below:
+1. In Blogger, open your blog settings and enter this domain name as the custom domain
+1. Blogger will show two CNAME records that you must add below:
+   - the blog CNAME, which points your chosen subdomain to `ghs.google.com`
+   - a security CNAME with a Blogger-generated host and target
 
-1. Add the Blogger service to the domain and check the DNS records are correctly applied to your domain. You will need to provide the name of the blog you created in Blogger.
-1. Follow the steps to [enable the custom domain in your Blogger blog](https://support.google.com/blogger/troubleshooter/1233381?hl=en#ts=1734117). The URL for the custom domain will be `blog.mydomain.com` (replace `mydomain` with your real domain name).
+If your domain uses CAA records, Blogger requires a CAA entry for
+`letsencrypt.org` so certificates can be issued and renewed.

services/blogger/readme.md

@@ -1 +1,4 @@
-[Blogger](http://blogger.com/) is a free blogging service provided by Google.
+[Blogger](https://www.blogger.com/) is Google's blogging platform.
+
+Use this template to add the CNAME records required to connect a custom domain to
+your Blogger blog.