Change DNS nameservers using NetworkManager
sudo nmcli connection modify <connection name> ipv4.dns "1.1.1.1 8.8.8.8"
Apply changes:
sudo nmcli dev reapply <interface>
nmcli/
How to reload the connection with NetworkManager
Reload interface configuration:
sudo nmcli connection reload
This command will ONLY make NetworkManager aware of new configuration changes. To apply the new changes, run the following command:
sudo nmcli dev reapply <interface>
Connect dedicated servers with cloud servers in hetzner via vSwitch
Main article is provided by Hetzner team here. This article contains instructions for creating vlan interface in Centos 8 using nmcli.
Assumptions (same us in the main article + listed below):
- VLAN ID is
4001 - parent network interface is
enp195s0
Steps:
- Create new connection:
nmcli connection add type vlan con-name vlan4001 ifname vlan4001 vlan.parent enp195s0 vlan.id 4001
- Configure the connection:
nmcli connection modify vlan4001 802-3-ethernet.mtu 1400
nmcli connection modify vlan4001 ipv4.addresses '10.0.1.2/24'
nmcli connection modify vlan4001 ipv4.gateway '10.0.1.1'
nmcli connection modify vlan4001 ipv4.dns '10.0.0.4' # (optional)
nmcli connection modify vlan4001 ipv4.method manual
nmcli connection modify vlan4001 +ipv4.routes "10.0.0.0/16 10.0.1.1"
- Restart the connection
nmcli connection down vlan4001
nmcli connection up vlan4001
- Verify configuration
# Prints what gateway is used to reach the ip
ip route get 10.0.0.5
# Print all connection information
nmcli connection show vlan4001
# Print routing table
ip r
# Use tui interface for NetworkManager
dnf install NetworkManager-tui
nmtui
Restarting NetworkManager wasn’t enough to apply custom routes. Bring interface up and down
And the link to the great RedHat documentation