centos8重启网卡命令systemctl

在CentOS 8中，重启网络接口卡(Network Interface Card,简称NIC)的命令是`nmcli dev disconnect `和`nmcli dev reconnect `，这两个命令通常结合使用，以便在重启网络接口卡之前断开与该接口的连接，然后在重启后重新连接。

以下是具体的操作步骤：

1. 使用`nmcli dev disconnect `命令断开与要重启的网络接口卡的连接，如果要重启名为eth0的网络接口卡，可以执行以下命令：

nmcli dev disconnect eth0

2. 然后，使用`nmcli dev reconnect `命令重新连接到网络接口卡，如果要重启名为eth0的网络接口卡，可以执行以下命令：

nmcli dev reconnect eth0

3. 可以使用`ip link set eth0 up `命令启动网络接口卡，如果要启动名为eth0的网络接口卡，可以执行以下命令：

ip link set eth0 up

4. 如果需要查看当前系统中所有网络接口卡的状态，可以使用`nmcli device status `命令。

nmcli device status

5. 如果需要查看所有可用的网络接口卡列表，可以使用`nmcli device show `命令。

nmcli device show --all

6. 如果需要查看指定网络接口卡的详细信息，可以使用`nmcli device show `命令后跟网络接口卡的名称。

nmcli device show eth0

7. 如果需要配置网络接口卡的属性，可以使用`nmtui `命令进入图形界面进行设置。

nmtui

8. 如果需要禁用或启用指定的网络接口卡，可以使用`nmcli con mod `命令，如果要禁用名为eth0的网络接口卡，可以执行以下命令：

nmcli con mod eth0 off

9. 如果需要查看当前系统中已启用或禁用的网络接口卡列表，可以使用`nmcli con show `命令。

nmcli con show --active --running --managed --state off

10. 如果需要查看指定网络接口卡的详细信息以及其关联的服务(如IPv4、IPv6等),可以使用`nmcli con show `命令后跟网络接口卡的名称。

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