systemd-networkd is not permanently enabled when the unit is already runtime-enabled

[Matt Crees]

There is a fix in the systemd_service module, but this is not yet in a versioned release: https://github.com/ansible/ansible/commit/3076478892735bd33fd79c14acf3635d004f859f

To recreate:

Start with the service is disabled:

$ systemctl status systemd-networkd
● systemd-networkd.service - Network Configuration
     Loaded: loaded (/lib/systemd/system/systemd-networkd.service; disabled; vendor preset: enabled)

After running a control host bootstrap, it gets temporarily enabled "enabled-runtime".

$ systemctl status systemd-networkd
● systemd-networkd.service - Network Configuration
     Loaded: loaded (/lib/systemd/system/systemd-networkd.service; enabled-runtime; vendor preset: enabled)

Run host configure, it doesn't get enabled permanently because the service module already detects enabled-runtime. It is then restarted, so it goes back to disabled.

TASK [stackhpc.systemd_networkd : enable systemd-networkd] ********************
Friday 12 July 2024 15:28:40 +0000 (0:00:02.375) 0:00:52.532 ***********
ok: [controller0]

RUNNING HANDLER [stackhpc.systemd_networkd : restart systemd-networkd] *******************************************************************************
Friday 12 July 2024 15:28:40 +0000 (0:00:00.050) 0:00:53.112 ***********
changed: [controller0]

$ systemctl status systemd-networkd
● systemd-networkd.service - Network Configuration
     Loaded: loaded (/lib/systemd/system/systemd-networkd.service; disabled; vendor preset: enabled)
     Active: active (running) since Fri 2024-07-12 15:28:41 UTC; 1min 39s ago