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開発環境のpumaでhttps接続をを有効にする

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はじめに

開発環境のpumaを自己署名証明書でhttps対応させます。任意のFQDNでアクセスし、証明書はブラウザ側で例外指定する想定です。

環境

  • AlmaLinux 9.3
  • Ruby 2.7.8
  • Rails 6.1.4.7
  • puma 5.5.2

自己署名証明書の作成

$ cd /path/to/app
$ mkdir -p config/ssl && pushd $_
$ openssl req -x509 \
              -newkey rsa:4096 \
              -keyout server.key \
              -out server.crt \
              -days 3650 \
              -noenc \
              -subj '/CN=dev.example.com' \
              -extensions san \
              -config <( \
                echo '[ req ]'; \
                echo 'distinguished_name=req'; \
                echo '[ san ]'; \
                echo 'subjectAltName=DNS.1:dev.example.com';)
$ chmod 400 server.*
$ popd

アプリの config/ssl ディレクトリに鍵とCertを生成しています。最近のブラウザはCNだけでなくExtensionsセクションのDNS情報もチェックするため、そちらも記載しています。

dev.example.comを任意のFQDNに置き換えてください。

pumaの起動設定

config/puma.rb
ssl_bind '0.0.0.0', '3443', {
  key: 'config/ssl/server.key',
  cert: 'config/ssl/server.crt',
  verify_mode: 'none'
}

pumaの起動

$ bundle exec pumactl start

参考

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