우분투 서버 IP 변경하기

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1. 들어가며

서버 IP 변경이 필요해서 정리하는 글

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2. NIC와 Gateway 정보 확인

route -n

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eno1
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 eno1

• Gateway : 192.168.0.1
• NIC : eno1

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3. IP 변경하기

vi /etc/netplan/50-cloud-init.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    eno1: #route -n으로 확인한 NIC
      addresses: [192.168.0.5/24] #지정할 ip
      gateway4: 192.168.0.1 #route -n 으로 확인 한 gateway ip
      nameservers:
        addresses: [8.8.8.8, 8.8.4.4] # 네임서버 주소 (구글 네임서버로 설정)

↑ 위와 같이 내용을 수정

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4. 적용하기

netplan apply

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5. 확인하기

ifconfig

eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.0.5  netmask 255.255.255.0  broadcast 192.168.0.255
        inet6 fe80::3ea8:2aff:fe1e:5454  prefixlen 64  scopeid 0x20<link>
        ether 3c:a8:2a:1e:54:54  txqueuelen 1000  (Ethernet)

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