【Ubuntu】Netplan静态网络配置

1.配置文件

# 默认配置文件：/etc/netplan/*.yaml

# 本机
root@ubuntu-server:~# vim /etc/netplan/50-cloud-init.yaml 

2.DHCP

network:             
    ethernets:
        ens33:
            dhcp4: true
    version: 2

3.静态IP设置

• 注意：netplan 说明文件格式存储在下列路径下，该目录下有各种样例文件，可以提供帮助

root@ubuntu-server:~# cd  /usr/share/doc/netplan/examples/
root@ubuntu-server:/usr/share/doc/netplan/examples# ls

bonding_router.yaml               infiniband.yaml          sriov_vlan.yam    ……

# 静态IP范例
root@ubuntu-server:/usr/share/doc/netplan/examples# cat static.yaml 
network:
  version: 2
  renderer: networkd
  ethernets:
    enp3s0:                    #网卡名
      addresses:
        - 10.10.10.2/24        #静态IP地址/子网掩码
      nameservers:
        search: [mydomain, otherdomain]        #域名
        addresses: [10.10.10.1, 1.1.1.1]       #DNS解析地址1 ， DNS解析地址2
      routes: 
        - to: default
          via: 10.10.10.1       #网关地址

• 查看本机IP信息

# IP and netmask:
root@ubuntu-server:~# ifconfig ens33     #IP：192.168.2.135
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.2.135  netmask 255.255.255.0  broadcast 192.168.2.255
        inet6 fe80::20c:29ff:fe2b:2eed  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:2b:2e:ed  txqueuelen 1000  (Ethernet)
        RX packets 181714  bytes 269446531 (269.4 MB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 15485  bytes 1005411 (1.0 MB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        
# gateway：      192.168.2.2
root@ubuntu-server:~# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.2.2     0.0.0.0         UG    0      0        0 ens33
192.168.2.0     0.0.0.0         255.255.255.0   U     0      0        0 ens33


# DNS：114.114.114.114

• 设置 

root@ubuntu-server:~# vim /etc/netplan/50-cloud-init.yam
# 清除已有内容，将静态IP范例文件内容拷贝到当前配置中，在修改,注意缩进格式
network:
    ethernets:
        ens33:
            dhcp4: no
            addresses:
            - 192.168.2.135/24
            - 192.168.2.150/24
            routes:
              - to: default
                via: 192.168.2.2
            nameservers:
              addresses: [114.114.114.114]
    version: 2

• 生效

root@ubuntu-server:~# netplan apply