１．動作環境

Ubuntu Server 16.04.2 LTS

２．ドメイン取得 - Google Domains

Google Domainsで取得した．

 

	ドメインを購入．.com，.net，.jpで悩んだが，値段から.jpを断念．商用ではないが，一番無難なので.comを．
	毎年自動的に料金が支払われるプランに．1400円/年．
	個人情報を入力．whoisには出てこないように設定した．
	ネームサーバー設定．Google Domainsネームサーバーを使う．

３．DDNS設定 - ddclient

Google Domainsのサービスをつかい，ddclientでIP更新をかける．

 

	Google Domainsの合成レコードからネイキッドドメインをDDNS設定．
	ddclientをインストールする．TUIメニューが出てくる．

$ sudo apt install ddclient

設定ファイルを編集．

$ cd /etc

$ sudo cat ddclient.conf
# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf

protocol=dyndns2

server=domains.google.com
login=****************
password='****************'
meltingrabbit.com

$ sudo nano ddclient.conf

$ sudo cat ddclient.conf
# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf

protocol=dyndns2
ssl=yes
server=domains.google.com
login=****************
password='****************'
meltingrabbit.com

デーモンの再起動．ログを確認すると起動していない．

$ sudo /etc/init.d/ddclient restart
[ ok ] Restarting ddclient (via systemctl): ddclient.service.

$ grep ddc /var/log/syslog
Jul  3 20:00:05 ${user} ddclient[15080]:  * To run ddclient as a daemon, please set run_daemon to 'true' in /etc/default/ddclient
Jul  3 20:00:05 ${user} ddclient[15080]:    ...done.
Jul  3 20:00:05 ${user} ddclient[15088]:  * To run ddclient as a daemon, please set run_daemon to 'true' in /etc/default/ddclient
Jul  3 20:00:05 ${user} ddclient[15088]:    ...done.

ddclientのデーモンの設定．

$ cd /etc/default/

$ sudo cat ddclient
# Configuration for ddclient scripts
# generated from debconf on 2018年  7月  3日 火曜日 19:37:23 JST
#
# /etc/default/ddclient

# Set to "true" if ddclient should be run every time DHCP client ('dhclient'
# from package isc-dhcp-client) updates the systems IP address.
run_dhclient="false"

# Set to "true" if ddclient should be run every time a new ppp connection is
# established. This might be useful, if you are using dial-on-demand.
run_ipup="true"

# Set to "true" if ddclient should run in daemon mode
# If this is changed to true, run_ipup and run_dhclient must be set to false.
run_daemon="false"

# Set the time interval between the updates of the dynamic DNS name in seconds.
# This option only takes effect if the ddclient runs in daemon mode.
daemon_interval="300"

$ sudo nano ddclient

$ sudo cat ddclient
# Configuration for ddclient scripts
# generated from debconf on 2018年  7月  3日 火曜日 19:37:23 JST
#
# /etc/default/ddclient

# Set to "true" if ddclient should be run every time DHCP client ('dhclient'
# from package isc-dhcp-client) updates the systems IP address.
run_dhclient="false"

# Set to "true" if ddclient should be run every time a new ppp connection is
# established. This might be useful, if you are using dial-on-demand.
run_ipup="false"

# Set to "true" if ddclient should run in daemon mode
# If this is changed to true, run_ipup and run_dhclient must be set to false.
run_daemon="true"

# Set the time interval between the updates of the dynamic DNS name in seconds.
# This option only takes effect if the ddclient runs in daemon mode.
daemon_interval="300"

デーモンの再起動．動作確認．

$ sudo /etc/init.d/ddclient restart
[ ok ] Restarting ddclient (via systemctl): ddclient.service.

$ sudo /etc/init.d/ddclient status
● ddclient.service - LSB: Update dynamic domain name service entries
   Loaded: loaded (/etc/init.d/ddclient; bad; vendor preset: enabled)
   Active: active (running) since 水 2018-07-04 13:51:20 JST; 1min 8s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 11006 ExecStop=/etc/init.d/ddclient stop (code=exited, status=0/SUCCESS)
  Process: 11016 ExecStart=/etc/init.d/ddclient start (code=exited, status=0/SUCCESS)
    Tasks: 1
   Memory: 6.5M
      CPU: 190ms
   CGroup: /system.slice/ddclient.service
           └─11025 ddclient - sleeping for 240 seconds

 7月 04 13:51:19 {$pc_name} systemd[1]: Starting LSB: Update dynamic domain name service entries...
 7月 04 13:51:20 {$pc_name} systemd[1]: Started LSB: Update dynamic domain name service entries.

$ ps aux | grep ddclient
root     11025  0.0  0.2  31900  8964 ?        S    13:51   0:00 ddclient - sleeping for 100 seconds

DDNSのアップデートができるか確認．IPが取得できていない．

$ sudo ddclient -daemon=0 -verbose
WARNING:  unable to determine IP address

IP取得設定．

$ cd /etc

$ sudo nano ddclient.conf

$ sudo cat ddclient.conf
# Configuration file for ddclient generated by debconf
#
# /etc/ddclient.conf

protocol=dyndns2
ssl=yes
use=web, web=checkip.dynu.com/, web-skip='IP Address'
server=domains.google.com
login=****************
password='****************'
meltingrabbit.com

$ sudo /etc/init.d/ddclient restart
[ ok ] Restarting ddclient (via systemctl): ddclient.service.

$ grep ddc /var/log/syslog
Jul  4 14:24:31 {$pc_name} ddclient[12876]: SUCCESS:  updating meltingrabbit.com: good: IP address set to xxx.xxx.xxx.xxx

Google DomainsでIPが更新されていることを確認．

４．SSL化やリダイレクト設定など

長くなったので，HPのSSL化やリダイレクト設定などは，

「」

「」

「」

に書くこととする．

５．出典・参考サイト

	Google Domains ヘルプ. ネームサーバー. Retrieved July 3, 2018, from https://support.google.com/domains/answer/3290309?hl=ja
	Ubuntu Documentation Community Help Wiki. DynamicDNS. Retrieved July 3, 2018, from https://help.ubuntu.com/community/DynamicDNS#ddclient

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