实验-禁用网卡命名规则
vim /etc/sysconfig/grub
在GRUB_CMDLINE_LINUX="rd.lvm.lv=rhel/root vconsole.keymap=us vconsole.font=latarcyrheb-sun16 crashkernel=auto rhgb quiet net.ifnames=0 biosdevname=0"行尾的引号内部加入net.ifnames=0 biosdevname=0参数
grub2-mkconfig -o /boot/grub2/grub.cfg
重启后系统将不采用网卡命名规则
实验-临时修改IP
ifconfig eno16777736 100.100.100.100/16
ifconfig
nmcli connection down eno16777736 ; nmcli connection up eno16777736
ifconfig
实验-修改网络参数
nmcli connection modify eno16777736 ipv4.method manual ipv4.addresses "192.168.100.1/24 192.168.100.1" ipv4.dns 192.168.100.1 connection.autoconnect yes
nmcli connection modify eno16777736 +ipv4.addresses 10.0.0.1/8
nmcli connection down eno16777736 ; nmcli connection up eno16777736
ip addr show
实验-路由设置
route -n
route add -net 192.168.100.0 netmask 255.255.255.0 gw 192.168.100.1
route del -net 192.168.100.0 netmask 255.255.255.0 gw 192.168.100.1
实验-添加ipv6地址
nmcli connection modify eno16777736 ipv6.method manual ipv6.addresses '2001::1/64 2001::1' ipv6.dns 2001::1
nmcli connection down eno16777736 ; nmcli connection up eno16777736
ping6 2001::1
实验-多配置文件管理网卡
nmcli connection add type ethernet con-name home ifname eno16777736
nmcli connection modify home ipv4.method manual ipv4.addresses "10.0.0.1/24 10.0.0.1" ipv4.dns 10.0.0.1
nmcli connection down eno16777736
nmcli connection up home
查看ip地址发现已经更改
实验-单配置文件增加网络信息
vim /etc/sysconfig/network-scripts/ifcfg-eno16777736
IPADDR1=10.0.0.1
PREFIX1=8
GATEWAY1=10.0.0.1
DNS2=10.0.0.1
systemctl restart NetworkManager
ip addr show
实验-新增网卡
新添加一块网卡
nmcli device show可以发现新增了一块网卡
nmcli connection add type ethernet enoxxxxxxxx ifname enoxxxxxxxx
nmcli connection modify enoxxxxxxxx ipv4.method manual ipv4.addresses "192.168.100.1/24 192.168.100.1" ipv4.dns 192.168.100.1 connection.autoconnect yes
systemctl restart NetworkManager
ifconfig