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[root@localhost ~]# nmcli con add type team con-name team0 ifname team0 config '{runner: {name:activebackup}}'
Connection 'team0' (606d7645-fa66-484e-b29a-d09fdfcbb722) successfully added.
[root@localhost ~]# nmcli con show
NAME UUID TYPE DEVICE
team0 606d7645-fa66-484e-b29a-d09fdfcbb722 team --
enp0s9 ad74ba4b-4103-43d4-bd9c-56773a2af5ba 802-3-ethernet --
enp0s10 e6ea1f90-16b6-4d71-99ac-e13196f5b076 802-3-ethernet --
enp0s3 1b207533-ad75-4c82-b2a4-7cc853a67c1e 802-3-ethernet --
enp0s8 3027f1c3-b777-4519-bdf2-4ebb69a7369c 802-3-ethernet --
[root@localhost ~]# nmcli con add type team-slave con-name team0-enp0s3 ifname enp0s3 master team0
Connection 'team0-enp0s3' (764c089a-4bf1-41c9-8d93-869c981e56d9) successfully added.
[root@localhost ~]# nmcli con add type team-slave con-name team0-enp0s8 ifname enp0s8 master team0
Connection 'team0-enp0s8' (79c33552-e1a5-45e2-95d7-6e0e0dacaf79) successfully added.
[root@localhost ~]# nmcli con show
NAME UUID TYPE DEVICE
enp0s9 ad74ba4b-4103-43d4-bd9c-56773a2af5ba 802-3-ethernet --
team0-enp0s8 79c33552-e1a5-45e2-95d7-6e0e0dacaf79 802-3-ethernet enp0s8
enp0s10 e6ea1f90-16b6-4d71-99ac-e13196f5b076 802-3-ethernet --
enp0s3 1b207533-ad75-4c82-b2a4-7cc853a67c1e 802-3-ethernet --
team0-enp0s3 764c089a-4bf1-41c9-8d93-869c981e56d9 802-3-ethernet enp0s3
team0 606d7645-fa66-484e-b29a-d09fdfcbb722 team --
enp0s8 3027f1c3-b777-4519-bdf2-4ebb69a7369c 802-3-ethernet --
[root@localhost ~]# nmcli con mod team0 ipv4.addresses "10.0.2.60/24 10.0.2.2"
[root@localhost ~]# nmcli con mod etam0 ipv4.method manual
Error: Unknown connection 'etam0'.
[root@localhost ~]# nmcli con mod team0 ipv4.method manual
[root@localhost ~]# nmcli con up team0
Error: Connection activation failed: Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/11' failed in libnm-glib.
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-team0
[root@localhost ~]# nmcli con up team0
Error: Connection activation failed: Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/12' failed in libnm-glib.
[root@localhost ~]# nmcli con up team0
Error: Connection activation failed: Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/13' failed in libnm-glib.
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-team0
[root@localhost ~]# nmcli con up team0
Error: Connection activation failed: Creating object for path '/org/freedesktop/NetworkManager/ActiveConnection/14' failed in libnm-glib.
[root@localhost ~]# nmcli con up team0-enp0s3
^C
Error: nmcli terminated by signal 2.[root@localhost ~]#
[root@localhost ~]#
[root@localhost ~]# systemctl restart NetworkManager
[root@localhost ~]# nmcli con up team0-enp0s3
Error: Timeout 90 sec expired.
[root@localhost ~]#