ubuntu20.04 域名解析暂时失败
<h3 id="1前言">1、前言</h3><p>ping: www.baidu.com: 域名解析暂时失败</p>
<h3 id="2排查">2、排查</h3>
<p><code>ifconfig</code> 显示如下，enx000ec635404a网卡没有ip配置</p>
<pre><code>enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 192.168.19.138netmask 255.255.255.0broadcast 192.168.19.255
inet6 fe80::d058:2b28:6be9:fe29prefixlen 64scopeid 0x20<link>
ether ce:e6:4c:68:04:bctxqueuelen 1000(以太网)
RX packets 276511173bytes 348533647010 (348.5 GB)
RX errors 0dropped 23750overruns 0frame 0
TX packets 465668303bytes 541502143429 (541.5 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
enx000ec635404a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
ether 00:0e:c6:35:40:4atxqueuelen 1000(以太网)
RX packets 71039bytes 12267317 (12.2 MB)
RX errors 0dropped 0overruns 0frame 0
TX packets 10258570bytes 11216668369 (11.2 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING>mtu 65536
inet 127.0.0.1netmask 255.0.0.0
inet6 ::1prefixlen 128scopeid 0x10<host>
looptxqueuelen 1000(本地环回)
RX packets 6466211bytes 1905907598 (1.9 GB)
RX errors 0dropped 0overruns 0frame 0
TX packets 6466211bytes 1905907598 (1.9 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
</code></pre>
<p><code>sudo vim /etc/netplan/00-installer-config.yaml</code> 创建配置文件，输入以下内容</p>
<p><strong>enx000ec635404a</strong> 网卡名称与上述缺少ip的网卡一致</p>
<pre><code>network:
ethernets:
enx000ec635404a: #配置的网卡的名称
addresses: #配置的静态ip地址和掩码
dhcp4: no #关闭DHCP，如果需要打开DHCP则写yes
optional: true
gateway4: 192.168.0.1 #网关地址
nameservers:
addresses: #DNS服务器地址，多个DNS服务器地址需要用英文逗号分隔开
version: 2
renderer: networkd #指定后端采用systemd-networkd或者Network Manager，可不填写则默认使用systemd-workd
</code></pre>
<p><code>sudo netplan apply</code> 使网络配置生效</p>
<p><strong>结果</strong></p>
<pre><code>enp4s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 192.168.19.138netmask 255.255.255.0broadcast 192.168.19.255
inet6 fe80::d058:2b28:6be9:fe29prefixlen 64scopeid 0x20<link>
ether ce:e6:4c:68:04:bctxqueuelen 1000(以太网)
RX packets 276511173bytes 348533647010 (348.5 GB)
RX errors 0dropped 23750overruns 0frame 0
TX packets 465668303bytes 541502143429 (541.5 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
enx000ec635404a: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>mtu 1500
inet 192.168.0.138netmask 255.255.255.0broadcast 192.168.0.255
inet6 fe80::864b:38d0:a3d7:cc1dprefixlen 64scopeid 0x20<link>
ether 00:0e:c6:35:40:4atxqueuelen 1000(以太网)
RX packets 71039bytes 12267317 (12.2 MB)
RX errors 0dropped 0overruns 0frame 0
TX packets 10258570bytes 11216668369 (11.2 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING>mtu 65536
inet 127.0.0.1netmask 255.0.0.0
inet6 ::1prefixlen 128scopeid 0x10<host>
looptxqueuelen 1000(本地环回)
RX packets 6466211bytes 1905907598 (1.9 GB)
RX errors 0dropped 0overruns 0frame 0
TX packets 6466211bytes 1905907598 (1.9 GB)
TX errors 0dropped 0 overruns 0carrier 0collisions 0
</code></pre>
<h3 id="3扩展">3、扩展</h3>
<p>ping: www.baidu.com: 域名解析暂时失败 简单解决</p>
<p>Ubuntu 20.04修改ip地址</p>
<p>Ubuntu系统重启后/etc/resolv.conf内容丢失的解决方案</p>
<p>linux中nmcli命令使用及网络配置</p><br><br>
来源：https://www.cnblogs.com/kikyoqiang/p/15639251.html
頁:
[1]