1、问题:Connection 'ens33' is not available on device ens33 because device is strictly unmanaged

解决:
查看托管状态: nmcli n
显示 disabled 则为本文遇到的问题 :nmcli n on (开启网络,加入NM托管)
重启:systemctl restart NetworkManager 或 reboot

2、nmcli 命令使用

(1)
[root@host ~]# nmcli con show static-ens3
connection.id:                          static-ens3
connection.uuid:                        87b53c56-1f5d-4a29-a869-8a7bdaf56dfa
connection.interface-name:              -
connection.type:                        802-3-ethernet
connection.autoconnect:                 yes
connection.timestamp:                   1401803453
connection.read-only:                   no
connection.permissions:
connection.zone:                        -
connection.master:                      -
connection.slave-type:                  -
connection.secondaries:
connection.gateway-ping-timeout:        0
802-3-ethernet.port:                    -
802-3-ethernet.speed:                   0

(2)
[root@host ~]# nmcli con mod static-ens3 ipv6.address "2001:db8:0:1::a00:1/64 2001:db8:0:1::1"

(3)
[root@host ~]# nmcli con add con-name eno2 type ethernet ifname eno2 ip4 192.168.0.5/24 gw4 192.168.0.254


备份地址: 【NetworkManager管理网络