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Redmine Admin, 02/20/2026 12:55 PM

1 1 Redmine Admin 
必要コンポーネント
2 
	•	kea-dhcp4-server
3 
	•	kea-dhcp-ddns
4 
	•	bind9
5 
	•	tsigキー（認証用）
6 
① TSIGキー作成（BIND側）
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tsig-keygen -a HMAC-SHA256 kea-ddns-key
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key "kea-ddns-key" {
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	algorithm hmac-sha256;
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	secret "Mxq5WFbnIydGNQ7w9rWOA9CdGc48iKZcOd0c9bWl9QQ=";
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};
12 2 Redmine Admin 
→ このキーはKeaとBIND両方に設定
13 
② BIND9 設定
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/etc/bind/named.conf.local
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key "kea-ddns-key" {





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    algorithm hmac-sha256;





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    secret "Mxq5WFbnIydGNQ7w9rWOA9CdGc48iKZcOd0c9bWl9QQ=";





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};





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zone "toyama.local" {





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    type master;





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    file "/var/lib/bind/db.toyama.local";





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    allow-update { key "kea-ddns-key"; };





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};





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逆引きも同様に：





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zone "1.16.172.in-addr.arpa" {





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    type master;





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    file "/var/lib/bind/db.172.16.1";





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    allow-update { key "kea-ddns-key"; };





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};





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③ Kea DHCP 設定





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/etc/kea/kea-dhcp4.conf





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{





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  "Dhcp4": {





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    "ddns-send-updates": true,





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    "ddns-override-client-update": true,





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    "ddns-override-no-update": true,





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    "ddns-replace-client-name": "when-present",





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    "ddns-generated-prefix": "host",





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    "ddns-qualifying-suffix": "toyama.local",





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    "dhcp-ddns": {





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      "enable-updates": true,





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      "server-ip": "127.0.0.1",





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      "server-port": 53001





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    }





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  }





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}





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sudo nano /var/lib/bind/db.toyama.local





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$TTL 3600





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@   IN SOA ns1.toyama.local. admin.toyama.local. (





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        2026022001





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        3600





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        1800





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        604800





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        3600 )





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@       IN NS ns1.toyama.local.





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ns1     IN A  172.16.1.101





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パーミッション修正（重要）





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sudo chown bind:bind /var/lib/bind/db.toyama.local





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sudo chmod 664 /var/lib/bind/db.toyama.local





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sudo named-checkconf





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sudo named-checkzone toyama.local /var/lib/bind/db.toyama.local





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sudo systemctl restart bind9





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④ kea-dhcp-ddns





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 設定





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/etc/kea/kea-dhcp-ddns.conf





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{





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  "DhcpDdns": {





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    "ip-address": "127.0.0.1",





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    "port": 53001,





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    "forward-ddns": {





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      "ddns-domains": [





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        {





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          "name": "toyama.local.",





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          "key-name": "kea-ddns-key",





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          "dns-servers": [





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            {





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              "ip-address": "127.0.0.1",





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              "port": 53





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            }





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          ]





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        }





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      ]





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    },





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    "reverse-ddns": {





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      "ddns-domains": [





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        {





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          "name": "1.16.172.in-addr.arpa.",





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          "key-name": "kea-ddns-key",





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          "dns-servers": [





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            {





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              "ip-address": "127.0.0.1",





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              "port": 53





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            }





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          ]





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        }





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      ]





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    },





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    "tsig-keys": [





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      {





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        "name": "kea-ddns-key",





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        "algorithm": "HMAC-SHA256",





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        "secret": "XXXXXXXXXXXXXXXX"





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      }





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    ]





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  }





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}





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⑤ 再起動





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sudo systemctl restart bind9





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sudo systemctl restart kea-dhcp-ddns





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sudo systemctl restart kea-dhcp4-server





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DDNSパッケージを入れる





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sudo apt update





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sudo apt install kea-dhcp-ddns





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Kea公式リポジトリを追加





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sudo apt install curl gnupg -y





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curl -1sLf 'https://dl.cloudsmith.io/public/isc/kea-2-4/setup.deb.sh' | sudo -E bash





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sudo apt update





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sudo apt install isc-kea





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full build





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sudo apt install build-essential cmake libboost-all-dev \





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libssl-dev liblog4cplus-dev libprotobuf-dev protobuf-compiler \





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libcurl4-openssl-dev libmysqlclient-dev libpq-dev -y





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sudo systemctl disable --now kea-dhcp4-server || true





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ビルド依存を入れる





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最低限（DHCP + DDNS + BIND連携）に寄せたセットです。





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sudo apt update





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sudo apt install -y \





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  build-essential autoconf automake libtool pkg-config \





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  libboost-all-dev liblog4cplus-dev libssl-dev \





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  libsqlite3-dev





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2) ソース取得（Kea 2.4.1例）





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cd /usr/local/src





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sudo wget https://downloads.isc.org/isc/kea/2.4.1/kea-2.4.1.tar.gz





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sudo tar -xvzf kea-2.4.1.tar.gz





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cd kea-2.4.1





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) configure → make → install





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⑥ 動作確認





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クライアント取得後：





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dig hostname.toyama.local





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dig -x 172.16.1.50





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富山DC向けおすすめ運用





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	•	VLAN別にサフィックス分離可





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例：





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	•	vlan1 → core.toyama.local





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	•	vlan100 → iot.toyama.local





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	•	Zabbix 自動登録と連動可能





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	•	Asset管理と連携可能





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	•	FreeRADIUS / EAP-TLS と相性良