Ubuntu 18.04 Server의 갑작스러운 네트워킹 문제

2024-7-9 • tag-icon

오늘 아침 Ubuntu 18.04 Server Edition 시스템의 네트워킹이 더 이상 작동하지 않습니다.

marco@pc01:$ sudo lshw -class network
  *-network DISABLED
      description: Ethernet interface
      product: RTL8111/8168/8411 PCI Express 
        Gigabit Ethernet Controller
  *-network DISABLED
      description: Wireles interface
      product: AR9227 Wireless Network Adapter
  *-network:0
       description: Ethernet interface
       physical id: 2
       logical name : docker0
  *-network:1
       description: Ethernet interface
       physical id: 3

sudo nano /etc/nework/interfaces:

iface eth0 inet static
    address 192.168.1.7
    netmask 255.255.255.0
    network 192.168.1.1 
    broadcast 192.168.0.255
    post-up iptables-restore <  
      /etc/iptables.up.rules
    gateway 192.168.1.1
    dns-nameservers 192.168.0.5 8.8.8.8

marco@pc01:$ sudo service network-manager restart
 Failed to restart network-manager.service: Unit network-manager.service 
  not found

심지어 sudo /etc/init.d/networking restart:

marco@pc01:$ sudo /etc/init.d/networking restart
[ok] Restarting networking (via systemctl):
 networking.service

marco@pc01:$ ping 192.168.1.4
 connect: Network is unreachable


marco@pc01:$ ip addr show
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKOWN group
       default qlen 1000
   inet 27.0.0.1/8 scope host lo
     valid_lft forever preferred_lft forever
   inet6 ::1/128 scope host
     valid_lft forever preferred_lft forever
2: enp3s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group 
       default qlen 1000
     link/ether 78:24:af:43:ef:5c brd ff:ff:ff:ff:ff:ff
3: wlp5s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group 
       default qlen 1000
     link/ether c0:4a:00:09:0e:80 brd ff:ff:ff:ff:ff:ff  
4: b3-4f9fe03b1a66: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc 
       noqueue state DOWN group default
     link/ether 02:42:64:29:65:73 brd ff:ff:ff:ff:ff:ff
     inet 172.22.0.1/16 brd 172.22.255.255 scope global br-4f9fe03b1a66
       valid_lft forever preferred_lft forever
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue 
      state DOWN group default
    link/Ether 02:42:01:ea:90:66 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.1/16 brd 172.17.255.255 scoper global docker0
      valid_lft forever preferred_lft forever


marco@pc01:$ ifconfig eth0 up eth0: ERROR while getting interface flags: 
  eth0: ERROR while getting interface flgs: No such device
  eth0: Host name lookup failure

marco@pc01:$ ifconfig
br-4f9feo3b1a66: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
    inet 192.22.0.1 netmask 255.255.0.0 broadcast 172.22.255.255
    ether 02:42:4d:c4:bd:62 txqueuelen 0 (Ethernet) 
    RX packets 0 bytes 0 (0.0B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

docker0: flags=4099<,UP,BROADCAST,MULTICAST> mtue 1500
    inet 172.17.0.1 netmask 255.255.0.0 broadcast 172.17.255.255
    ether 02:42:24:b9:3b:59 txqueuelen 0 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

l0: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
    inet 127.0.0.1 netmask 255.0.0.0
    inet6 ::1 prefoxlen 128 scopeid 0x10<host>
    loop txqueuelen 1000 (Local Loopback)
    RX packets 258 bytes 32343 (32.3 KB) 
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 258 bytes 32343 (32.3 KB)  
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0



/etc/network/interfaces :

  auto lo
  iface lo inet loopback

4° 업데이트:

  marco@pc01:$ uname -r
  4.15.0-55-generic

  marco@pc01:$ ls -al /etc/netplan
  total 20
  drwxr-xr-x 2 root root 4096 Jul 25 18:37
  drwxr-xr-x 128 root root 12288 Jul 25 12:51
  -rw-r--r-- 1 root root 616 Jul 25 18:37 30-cloun-init.yaml

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

     network:
         renderer: NetworkManager/ networkd
         ethernets:
           enp3s0:
               addresses: [192.168.1.7/24]
               gateway4: 192.168.1.1
               nameservers:
                   addresses: [8.8.8.8,8.8.4.4]
               dhcp4: no
         version: 2

 marco@pc01:$ sudo netplan apply
 sudo: netplan: command not found

대상 sudo llshw -c network: 위 참조

네트워크를 다시 사용할 수 있게 하려면 어떻게 해야 합니까? 마르코의 친절한 도움을 기대합니다

답변1

바로 "eth0: 인터페이스 플래그를 가져오는 중 오류: 해당 장치가 없습니다"라고 표시됩니다. 아마도 드라이버 문제이거나 비활성화/사용할 수 없는 하드웨어일 수 있습니다. 시스템 로그, 특히 커널을 확인하십시오. 다른 오류는 부차적이거나 어떤 경우에는 명령을 잘못 입력했을 수도 있습니다(저는 Ubuntu에 익숙하지 않습니다).

(리눅스는 네트워킹도 너무 복잡해졌습니다...)

답변1

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