GitHub Pages Health Check

Checks your GitHub Pages site for common DNS configuration issues

Installation

gem install github-pages-health-check

Usage

Basic Usage

> check = GitHubPages::HealthCheck::Site.new("choosealicense.com")
=> #<GitHubPages::HealthCheck::Site @domain="choosealicense.com" valid?=true>
> check.valid?
=> true

An invalid domain

> check = GitHubPages::HealthCheck::Site.new("foo.github.com")
> check.valid?
=> false
> check.valid!
raises GitHubPages::HealthCheck::Errors::InvalidCNAMEError

Retrieving specific checks

> check.domain.should_be_a_record?
=> true
> check.domain.a_record?
=> true

Getting checks in bulk

> check.to_hash
=> {
 :cloudflare_ip?=>false,
 :old_ip_address?=>false,
 :a_record?=>true,
 :cname_record?=>false,
 :valid_domain?=>true,
 :apex_domain?=>true,
 :should_be_a_record?=>true,
 :pointed_to_github_user_domain?=>false,
 :pointed_to_github_pages_ip?=>false,
 :pages_domain?=>false,
 :valid?=>true
}
> check.to_json
=> "{\"cloudflare_ip?\":false,\"old_ip_address?\":false,\"a_record?\":true,\"cname_record?\":false,\"valid_domain?\":true,\"apex_domain?\":true,\"should_be_a_record?\":true,\"pointed_to_github_user_domain?\":false,\"pointed_to_github_pages_ip?\":false,\"pages_domain?\":false,\"valid?\":true}"

Getting the reason a domain is invalid

> check = GitHubPages::HealthCheck::Site.new "developer.facebook.com"
> check.valid?
=> false
> check.reason
=> #<GitHubPages::HealthCheck::InvalidCNAME>
> check.reason.message
=> "CNAME does not point to GitHub Pages"

Repository checks

Repository checks require a personal access or OAuth token with repo or scope. This can be passed as the second argument to the Site or Repository constructors like so:

check = GitHubPages::HealthCheck::Site.new "github/pages-health-check", access_token: "1234

You can also set OCTOKIT_ACCESS_TOKEN as an environmental variable, or via a .env file in your working directory.

Command Line

./script/check pages.github.com

host: pages.github.com
uri: https://pages.github.com/
nameservers: :default
dns_resolves?: true
proxied?: false
cloudflare_ip?: false
fastly_ip?: false
old_ip_address?: false
a_record?: false
cname_record?: true
mx_records_present?: false
valid_domain?: true
apex_domain?: false
should_be_a_record?: false
cname_to_github_user_domain?: true
cname_to_pages_dot_github_dot_com?: false
cname_to_fastly?: false
pointed_to_github_pages_ip?: false
non_github_pages_ip_present?: false
pages_domain?: true
served_by_pages?: true
valid?: true
reason:
https?: true
enforces_https?: true
https_error:
https_eligible?: true
caa_error:
dns_zone_soa?: false
dns_zone_ns?: false

License

davidanderson01/pages-health-check

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