CentOS8重启网络失败之Failed to restart network.service: Unit network.service not found.

场景还原

在CentOS8中重启网卡失败，均提示系统无法找到网络服务单元

systemctl restart network
service network restart

异常提示

[root@localhost-cs8 /]# systemctl restart network
Failed to restart network.service: Unit network.service not found.

解决方案

执行该systemctl restart NetworkManager命令没异常提示，无法直观确定是否生效

[root@localhost-cs8 /]# systemctl restart NetworkManager
[root@localhost-cs8 /]# systemctl status NetworkManager

可以利用状态查询 每次Net重启 PID值会发生变化

systemctl status NetworkManager

步骤

[root@localhost-cs8 /]# systemctl status NetworkManager
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2023-09-12 11:01:17 CST; 2min 2s ago
     Docs: man:NetworkManager(8)
 Main PID: 6693 (NetworkManager)

[root@localhost-cs8 /]# systemctl restart NetworkManager

[root@localhost-cs8 /]# systemctl status NetworkManager
● NetworkManager.service - Network Manager
   Loaded: loaded (/usr/lib/systemd/system/NetworkManager.service; enabled; vendor preset: enabled)
   Active: active (running) since Tue 2023-09-12 11:03:39 CST; 3s ago
     Docs: man:NetworkManager(8)
 Main PID: 6859 (NetworkManager)

可以看到 PID值从 6693 变成了 6859

• centos8的话，用nmcli c reload 或者nmcli c up $网卡名称

科普

参考博客

1、如果时Ubuntu等系统，可以尝试使用以下命令：

service network-manager restart

2、如果是 Kali Linux（Debian），则需要用以下命令：

service networking restart

3、如果是Centos 8，则需要用以下命令：

nmcli c reload

Linux 网络配置(添加网卡、网卡会话配置、网卡绑定、配置主机名、配置路由)