Ubuntu20.04配置网卡
网络管理工具 netplan
1、在 Ubuntu20.04 版本中使用 netplan 管理网络
2、在安装好的 Ubuntu20.04 中没有 networking 和 NetworkManage 服务
3、netplan 配置文件：/etc/netplan/*.yaml ，文件名每个不一样
4、netplan 说明文件: /usr/share/doc/netplan/example/ 目录下，在该目录下有各种样例文件，可以提供帮助
修改网卡配置
1、编辑网络配置文件
root@it:~# vim /etc/netplan/00-installer-config.yaml # This is the network config written by 'subiquity' network: ethernets: ens32: addresses: - 192.168.121.25/24 gateway4: 192.168.121.2 nameservers: addresses: - 8.8.8.8 version: 2
2、加载刚刚修改的配置文件信息
root@it:~# netplan apply
3、没有提示报错信息，说明配置成功
root@it:~# ip add 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 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: ens32: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 link/ether 00:0c:29:16:8d:18 brd ff:ff:ff:ff:ff:ff inet 192.168.121.25/24 brd 192.168.121.255 scope global ens32 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe16:8d18/64 scope link valid_lft forever preferred_lft forever
netplan 帮助信息
root@it:~# netplan help usage: /usr/sbin/netplan [-h] [--debug] ... Network configuration in YAML #YAML中的网络配置 optional arguments: -h, --help show this help message and exit #显示此帮助信息并退出 --debug Enable debug messages #启用调试消息 Available commands: help Show this help message #显示帮助信息 apply Apply current netplan config to running system #应用当前netplan配置到运行系统 generate Generate backend specific configuration files from /etc/netplan/*.yaml #从/etc/netplan/*.yaml中生成特定后端配置文件 info Show current netplan version and available features #显示当前netplan版本和可用特性 ip Retrieve IP information from the system #从系统中检索IP信息 try Try to apply a new netplan config to running system, with automatic rollback #尝试将新的netplan配置应用到正在运行的系统，并自动回滚
启用调试信息
root@it:~# netplan --debug apply
** (generate:3189): DEBUG: 01:15:27.908: Processing input file /etc/netplan/00-installer-config.yaml..
** (generate:3189): DEBUG: 01:15:27.908: starting new processing pass
** (generate:3189): DEBUG: 01:15:27.908: We have some netdefs, pass them through a final round of validation
** (generate:3189): DEBUG: 01:15:27.908: ens32: setting default backend to 1
** (generate:3189): DEBUG: 01:15:27.908: Configuration is valid
** (generate:3189): DEBUG: 01:15:27.908: Generating output files..
** (generate:3189): DEBUG: 01:15:27.908: NetworkManager: definition ens32 is not for us (backend 1)
(generate:3189): GLib-DEBUG: 01:15:27.908: posix_spawn avoided (fd close requested)
DEBUG:netplan generated networkd configuration changed, restarting networkd
DEBUG:no netplan generated NM configuration exists
DEBUG:ens32 not found in {}
DEBUG:Merged config:
network:
bonds: {}
bridges: {}
ethernets:
ens32:
addresses:
- 192.168.121.25/24
gateway4: 192.168.121.2
nameservers:
addresses:
- 8.8.8.8
vlans: {}
wifis: {}
DEBUG:Skipping non-physical interface: lo
DEBUG:device ens32 operstate is up, not changing
DEBUG:{}
DEBUG:netplan triggering .link rules for lo
DEBUG:netplan triggering .link rules for ens32声明：本文由云召博客收集发布，如有侵权，请联系我们，我们将第一时间进行处理。
