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Dynamic DNS と https化 (ownCloud + Raspberry Pi 続き)

Last updated at Posted at 2016-04-17

Overview

2021/11/5:

  • mydnsのlogin記載の更新
  • let's encryptでのcertbotの追加

前回、ownCloud + Raspberry Pi で Google Drive代替 storage を 構築してみる では、ownCloudを、Ubuntu Mate 15.10 on Raspberry Pi3に構築しましたが、外から使うには、DNS対応と、https対応がないと心もとない感じですので、それのsetup編です。

dynamic DNSを利用する

私の場合は、mydns.jpを利用しました。
example.mydns.jpのような形でアクセス可能です。

cronで定期的にIP addressを更新する

mydns.jpは一定期間アクセスがないと、登録したnameが消失しますし、IP addressは通常変わり得ますので、cronで毎回loginして、IP addressを更新します。

$ cronbtab -e
*/10 * * * * wget -q -O /dev/null https://mydns123456:abcdefghijkl@ipv4.mydns.jp/login.html

のような感じで、ID/passwordで、curlとかwgetで定期ログインできるようにしましょう。

owncloudの設定

/var/www/owncloud/config/config.php
<?php
$CONFIG = array (
..snip..
  'trusted_domains' => 
  array (
    0 => 'localhost',
    1 => 'example.mydns.jp',
    2 => 'www.example.mydns.jp',
  ),

こんな感じで、trusted_domainsに設定しましょう。

https化

let's encryptが、無料でhttpsの証明書を発行してくれるので、それを使わせてもらいます。

まず、これを実行する前に、routerの設定で、443(https)をあけておきましょう。
また、

$ sudo ufw allow 443
$ sudo ufw allow 80
$ sudo systemctl restart apache2

などで、443(https)と80(http)を開けておきましょう。

/etc/apache2/sites-available/000-default.conf
<VirtualHost *:80>
        # The ServerName directive sets the request scheme, hostname and port that
        # the server uses to identify itself. This is used when creating
        # redirection URLs. In the context of virtual hosts, the ServerName
        # specifies what hostname must appear in the request's Host: header to
        # match this virtual host. For the default virtual host (this file) this
        # value is not decisive as it is used as a last resort host regardless.
        # However, you must set it for any further virtual host explicitly.
        #ServerName www.example.com

        ServerAdmin webmaster@localhost
        DocumentRoot /var/www/html
</VirtualHost>
/etc/apache2/ports.conf
Listen 80

<IfModule ssl_module>
        Listen 443
</IfModule>

<IfModule mod_gnutls.c>
        Listen 443
</IfModule>

certbotのinstall

$ sudo apt-get install snapd
$ sudo snap install core; sudo snap refresh core
$ sudo snap install --classic certbot
$ ln -s /snap/bin/certbot /usr/bin/certbot
$ sudo certbot --apache
Saving debug log to /var/log/letsencrypt/letsencrypt.log

Which names would you like to activate HTTPS for?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1: aaa.xxx.mydns.jp
2: bbb.xxx.mydns.jp
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Select the appropriate numbers separated by commas and/or spaces, or leave input
blank to select all options shown (Enter 'c' to cancel): 
Requesting a certificate for drive.tsurudaya.mydns.jp and www.tsurudaya.mydns.jp

Successfully received certificate.
Certificate is saved at: /etc/letsencrypt/live/aaa.xxx.mydns.jp/fullchain.pem
Key is saved at:         /etc/letsencrypt/live/bbb.xxx.mydns.jp/privkey.pem
This certificate expires on 2022-02-04.
These files will be updated when the certificate renews.
Certbot has set up a scheduled task to automatically renew this certificate in the background.

..snip..

上のように、自動で今後cert renewしてくれるので、crontabで設定する必要は無いです

ほか

それでは、enjoy.

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