Ubuntu系统配置静态ip

相较于CentOS，Ubuntu系统里并没有etc/network

实际配置项在etc/netplan/50-cloud-init.yaml

具体配置内容如下：

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# This file is generated from information provided by the datasource.  Changes
# to it will not persist across an instance reboot.  To disable cloud-init's
# network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
    ethernets:
        ens33:
            addresses: [192.168.148.129/24]
            gateway4: 192.168.148.2
            nameservers:
                addresses: [192.168.148.2]
    version: 2

如果使用VM，需要在网络配置里选择NAT模式，同时更改网关地址