Rebooting the RHEL8 helper makes it unreachable

[e-minguez]

Describe the bug
After configuring the ifcfg-* files and rebooting the helper, it is unreachable because the network service is not enabled in RHEL8

To Reproduce
Run the 02 script and reboot the helper node.

Expected/observed behavior
Cannot log-in via network and ip a shows no IPs

Additional context

[hardys]

The network service is enabled by default provided a network interface is enabled during the installation AFAIK?

I'm not sure this is actually specific to RHEL8, or just a side-effect of how it was installed? Can you provide more details?

[e-minguez]

Network scripts are deprecated in RHEL8 and they are no longer provided by default (according to the docs) https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/configuring_and_managing_networking/index#Using-NetworkManager-with-sysconfig-files_getting-started-with-networking-devices-with-NetworkManager

Maybe it is just a matter of removing the NM_CONTROLLED=no setting?

[hardys]

Maybe it is just a matter of removing the NM_CONTROLLED=no setting?

No the configuration files themselves are now a deprecated interface, thanks for the reminder :)

I think to replace them we'll need to switch to using nmcli in the scripts instead of creating the ifcfg files, which also aligns better with how things work on the (RHEL8 based) RHCOS image.