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AWS Route53を使ったGithub Pagesのカスタムドメイン設定

Posted at 2021-10-24

Prerequisite

自分でGithub Pagesを持っている

自分のドメインをGithub Pagesに設定する

1. Domain購入

お名前ドットコムで買った。

nakamasato.com

2. Github PagesのDomain設定

この中でDNSレコードの設定があるので、AWSのRoute53を使用

3. AWSのRoute53でHostedZone作成 (Terraform)

Route53のゾーンとレコードを作成

Terraform の場合:

main.tf

resource "aws_route53_zone" "nakamasato-com" {
  name    = "nakamasato.com"
  comment = "my domain"
  tags = {
    Environment = "test"
  }
}

resource "aws_route53_record" "about" {
  zone_id = aws_route53_zone.nakamasato-com.zone_id
  name    = "about"
  type    = "CNAME"
  ttl     = "5"

  records = ["nakamasato.github.io"]
}

cliの場合:

aws route53 create-hosted-zone --name nakamasato.com --caller-reference 2021-10-24-12:10

--caller-reference は失敗したときに同じRequestをRetryしてくれる用の uniqueなString

route53.json

{
  "Comment": "create record for about",
  "Changes": [
    {
      "Action": "CREATE",
      "ResourceRecordSet": {
        "Name": "about.nakamasato.com.",
        "Type": "CNAME",
        "TTL": 5,
        "ResourceRecords": [
          {
            "Value": "nakamasato.github.io"
          }
        ]
      }
    }
  ]
}

aws route53 change-resource-record-sets --hosted-zone-id ZXXXXXXXXXX --change-batch file://route53.json

Domain設定でネームサーバをdns1.onamae.comからroute53のネームサーバへ切り替える

確認

nslookup -type=ns nakamasato.com
Server:         192.168.3.1
Address:        192.168.3.1#53

Non-authoritative answer:
nakamasato.com  nameserver = ns-437.awsdns-54.com.
nakamasato.com  nameserver = ns-1430.awsdns-50.org.
nakamasato.com  nameserver = ns-2010.awsdns-59.co.uk.
nakamasato.com  nameserver = ns-696.awsdns-23.net.

Authoritative answers can be found from:
ns-437.awsdns-54.com    internet address = 205.251.193.181
ns-696.awsdns-23.net    internet address = 205.251.194.184
ns-1430.awsdns-50.org   internet address = 205.251.197.150
ns-2010.awsdns-59.co.uk internet address = 205.251.199.218

about.nakamasato.com を Github Pagesに設定 + Enforce HTTPS をクリック
https://about.nakamasato.com

Route53の料金

個人で使う場合はTrafficも少ないと思うので、以下の２つで良さそうなので、月1ドルくらいを想定

0.50USD ホストゾーンごと /月
0.40USD 100 万クエリごと

参考

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