Ubuntu 20.04 LTS Ubuntu Server Guide

lshw -class network

临时设置IP地址：

sudo ip addr add 10.102.66.200/24 dev ens160

ip link set dev ens160 up
ip link set dev ens160 down

ip address show dev ens160

sudo ip route add default via 10.102.66.1

ip route show

ip addr flush ens160

设置静态IP地址：

vi /etc/netplan/01-netcfg.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    ens160:
      addresses: [ 172.16.8.18/24 ]
      gateway4: 172.16.8.1
      nameservers:
          search: [ afd.ink ]
          addresses:
              - "172.16.8.10"

使配置生效：

sudo netplan apply

配置动态的IP（DHCP）：

vi /etc/netplan/01-netcfg.yaml

network:
  version: 2
  renderer: networkd
  ethernets:
    ens160:
      

sudo netplan apply

Name Service Switch Configuration: /etc/nsswitch.conf

 

配置DHCP服务：

sudo apt install isc-dhcp-server

vi /etc/dhcp/dhcpd.conf

# minimal sample /etc/dhcp/dhcpd.conf
default-lease-time 600;
max-lease-time 7200;

subnet 172.16.8.0 netmask 255.255.255.0 {
 range 172.16.8.150 172.16.8.200;
 option routers 172.16.8.1;
 option domain-name-servers 172.16.8.10, 172.16.8.20;
 option domain-name "afd.ink";
}

 

sudo systemctl restart isc-dhcp-server.service

时间同步(NTP):

timedatectl status

systemctl status systemd-timesyncd

用户管理：

sudo adduser username

sudo deluser username

sudo chown -R root:root /home/username/
sudo mkdir /home/archived_users/
sudo mv /home/username /home/archived_users/

sudo passwd -l username

sudo passwd -u username

 

sudo addgroup groupname
sudo delgroup groupname

sudo adduser username groupname

User Profile: /etc/skel

 

ls -ld /home/username

sudo chmod 0750 /home/username

/etc/adduser.conf