vm/virbr0のip固定 の履歴(No.1)

• 履歴一覧
• 差分 を表示
• 現在との差分 を表示
• ソース を表示
• vm/virbr0のip固定 へ行く。
  • 1 (2026-01-10 (土) 10:58:01)

概要†

• virbr0の定義で、mac/hostname/ipaddrを指定する
• vmを作成するときに、macアドレスを指定する

実践例†

コピペ用の文字列を生成

$ for i in $(seq -w 10 20); do echo "      <host mac='52:54:00:ff:ff:$i' name='vm$i' ip='192.168.122.$i'/>"; done
      <host mac='52:54:00:ff:ff:10' name='vm10' ip='192.168.122.10'/>
      <host mac='52:54:00:ff:ff:11' name='vm11' ip='192.168.122.11'/>
      <host mac='52:54:00:ff:ff:12' name='vm12' ip='192.168.122.12'/>
      <host mac='52:54:00:ff:ff:13' name='vm13' ip='192.168.122.13'/>
      <host mac='52:54:00:ff:ff:14' name='vm14' ip='192.168.122.14'/>
      <host mac='52:54:00:ff:ff:15' name='vm15' ip='192.168.122.15'/>
      <host mac='52:54:00:ff:ff:16' name='vm16' ip='192.168.122.16'/>
      <host mac='52:54:00:ff:ff:17' name='vm17' ip='192.168.122.17'/>
      <host mac='52:54:00:ff:ff:18' name='vm18' ip='192.168.122.18'/>
      <host mac='52:54:00:ff:ff:19' name='vm19' ip='192.168.122.19'/>
      <host mac='52:54:00:ff:ff:20' name='vm20' ip='192.168.122.20'/>

virsh net-edit default で、上記を <dhcp> 要素の下に追加（省略）
追加後の状態を表示するとこう

$ virsh net-dumpxml default --inactive
<network>
  <name>default</name>
  <uuid>b4adef5f-bcc2-484a-96fc-d66f792930a5</uuid>
  <forward mode='nat'/>
  <bridge name='virbr0' stp='on' delay='0'/>
  <mac address='52:54:00:20:fe:58'/>
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.254'/>
      <host mac='52:54:00:ff:ff:10' name='vm10' ip='192.168.122.10'/>
      <host mac='52:54:00:ff:ff:11' name='vm11' ip='192.168.122.11'/>
      <host mac='52:54:00:ff:ff:12' name='vm12' ip='192.168.122.12'/>
      <host mac='52:54:00:ff:ff:13' name='vm13' ip='192.168.122.13'/>
      <host mac='52:54:00:ff:ff:14' name='vm14' ip='192.168.122.14'/>
      <host mac='52:54:00:ff:ff:15' name='vm15' ip='192.168.122.15'/>
      <host mac='52:54:00:ff:ff:16' name='vm16' ip='192.168.122.16'/>
      <host mac='52:54:00:ff:ff:17' name='vm17' ip='192.168.122.17'/>
      <host mac='52:54:00:ff:ff:18' name='vm18' ip='192.168.122.18'/>
      <host mac='52:54:00:ff:ff:19' name='vm19' ip='192.168.122.19'/>
      <host mac='52:54:00:ff:ff:20' name='vm20' ip='192.168.122.20'/>
    </dhcp>
  </ip>
</network>

vm起動時にmacアドレスを指定

virt-install \
  --network network=default,model=virtio,mac=52:54:00:12:34:01 \
  ...