Howto NetworkManager
install NetworkManager
make sure you have network-manager installed:
yum install networkmanager -y
start and enable NetworkManager:
systemctl enable NetworkManager && systemctl start NetworkManager
add address to ethernet
add ip address to your eth0 interface:
nmcli con add con-name eth0 ipv4.method manual type ethernet ifname eth0 ipv4.address 192.168.75.15/24 ipv4.gateway 192.168.75.1 ipv4.dns 4.2.2.1,4.2.2.2 autoconnect yes
enable network interface eth0:
nmcli con up eth0
configure dhcp to your eth0 interface:
nmcli con add con-name eth0 ipv4.method auto type ethernet ifname eth0 autoconnect yes
NetworkManager commands
show connections using nmcli
nmcli con show
show active connections using nmcli
nmcli con show --active
show more details about connection device
nmcli con show "System eth0"
delete connection device:
nmcli con del "System eth0"
bring down or deactive network profile using nmcli
nmcli con up static
bring up or enable network profile using nmcli
nmcli con up static
reload configuration using nmcli
nmcli con reload nmcli con up static
modify ip address using nmcli
nmcli con modify "static" ipv4.addresses "172.25.0.10/24 172.25.0.254"
add another ip address to interface using nmcli
nmcli con modify "static" +ipv4.addresses "172.25.0.15/24"
modify dns using nmcli
nmcli con modify "static" ipv4.dns 8.8.8.8
create bridge interface
create the bridge interface:
nmcli connection add type bridge autoconnect yes con-name br0 ifname br0
add ip address to bridge interface:
nmcli connection modify br0 ipv4.addresses 192.168.75.15 ipv4.method manual ipv4.gateway 192.168.75.1 ipv4.dns 4.2.2.1,4.2.2.2
add device to bridge:
nmcli connection add type bridge-slave autoconnect yes con-name br0-eth0 ifname eth0 master br0
active bridge interface:
nmcli connection up br0
network teaming
add team interface:
nmcli connection add type team con-name team0 ifname team0 config '{"runner": {"name": "activebackup"}}'
add ipv4 address to interface:
nmcli connection modify team0 ipv4.addresses 172.25.0.11
add ipv4 method:
nmcli connection modify team0 ipv4.method manual
add slave interface:
nmcli connection add type team-slave con-name team0-eth1 ifname eth1 master team0
add ports to interface:
nmcli connection add type team-slave ifname eth0 master team0 nmcli connection add type team-slave ifname eth1 master team0
enable interfaces:
nmcli device enable eth0 nmcli device enable eth1
disable other connections and enable team0:
nmcli connection down System eth0 nmcli connection up team0
test connection disabling one interface:
nmcli device disable eth0
modify configuration:
nmcli connection modify team0 team.config '{"runner": {"name": "activebackup"}}'