主機獲取不到ip的解決方法

最新推荐文章于 2025-04-06 19:43:15 发布

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最新推荐文章于 2025-04-06 19:43:15 发布

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分类专栏： linux 文章标签： linux 主機 ip

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当配置文件中ONBOOT设置为"no"时，Linux主机可能无法获取IP。解决方案包括：查看并修改配置文件将ONBOOT改为"yes"，然后重启网络服务，最后确认IP是否已成功获取。

原因由於配置文件ONBOOT="no"導致主機獲取不到ip

1 查看配置文件
$ cat /etc/sysconfig/network-scripts/ifcfg-eno1
DEVICE="eno1"
NAME="eno1"
ONBOOT="yes"
TYPE=Ethernet
HWADDR="24:be:05:0c:1e:92"
BRIDGE="switch"
BOOTPROTO="none"
HOTPLUG="no"
NM_CONTROLED="no"

$ cat /etc/sysconfig/network-scripts/ifcfg-switch
DEVICE="switch"
NAME="switch"
ONBOOT="no"
TYPE=Bridge
BOOTPROTO="dhcp"
NM_CONTROLED="no"
DELAY=0

2 更改文件，將ONBOOT="no"改為 ONBOOT="yes"
[root@dhcp-8-118 ~]# vim /etc/sysconfig/network-scripts/ifcfg-switch

DEVICE="switch"
NAME="switch"
ONBOOT="yes"
TYPE=Bridge
BOOTPROTO="dhcp"
NM_CONTROLED="no"
DELAY=0

3 重新啟動網卡
[root@dhcp-8-118 ~]# systemctl restart network

4 查看獲取到的ip
[root@dhcp-8-118 ~]# ip a s
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master switch state UP qlen 1000
    link/ether 24:be:05:0c:1e:92 brd ff:ff:ff:ff:ff:ff
    inet6 fe80::26be:5ff:fe0c:1e92/64 scope link
       valid_lft forever preferred_lft forever
4: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN
    link/ether 52:54:00:15:59:94 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
5: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN qlen 500
    link/ether 52:54:00:15:59:94 brd ff:ff:ff:ff:ff:ff
6: switch: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP
    link/ether 24:be:05:0c:1e:92 brd ff:ff:ff:ff:ff:ff
    inet 10.66.8.118/22 brd 10.66.11.255 scope global dynamic switch
       valid_lft 86398sec preferred_lft 86398sec
    inet6 fe80::26be:5ff:fe0c:1e92/64 scope link
       valid_lft forever preferred_lft forever