What is the correct way of making nmcli commands persistent?
For example: nmcli device modify eth0 ipv4.method auto works but if I reboot the machine this is lost.
I know about interactive nmcli> save but I do not want to use interactive mode and I was not able to find the param neded to save these.
What is the unattended version to perform this manual operations?
nmcli c e eth0
set ipv4.method auto
set ipv6.method auto
set 802-3-ethernet.mtu 9000
save persistent
quit
Sorin,
if you are rebooting and finding the network connection not coming up - it could be the case that you need to set auto-connect to true.
nmcli con mod <connection-name> connection.autoconnect true
Network Manager on Centos 9 Stream places entries in /etc/NetworkManager/system-connections and not /etc/sysconfig/network-scripts, so if you're got a recent version of Linux, don't take network-scripts being empty as an indication that Network Manager hasn't persisted your configuration - it may be that the configuration is persistent but simply not auto-connecting at boot or at any time.
Good luck.
I think this should be the äquivalent non-interactive version:
nmcli c m eth0 ipv4.method auto ipv6.method auto 802-3-ethernet.mtu 9000
"save yes" is the default, so you can omit it here
