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新装centos 8不能使用service和systemctl
方法:nmcli connection reload +网卡名
例:nmcli connection reload eth0
如果不行,可尝试以下命令
# 重载所有ifcfg或route到connection(不会立即生效)
nmcli connection reload ifcfg-eth0
# 重载指定ifcfg或route到connection(不会立即生效)
nmcli connection load /etc/sysconfig/network-scripts/ifcfg-eth0
nmcli connection load /etc/sysconfig/network-scripts/route-eth0
# 立即生效connection,有3种方法
nmcli connection up eth0
nmcli device reapply eth0
nmcli deviceconnect eth0