iscsid-initiatorname.service

# Generate an iSCSI initiator name if one doesn't already exist
[Unit]
Description=iSCSI initiator name generator
After=systemd-tmpfiles-setup.service
ConditionPathExists=!/etc/iscsi/initiatorname.iscsi
DefaultDependencies=no

[Service]
Type=oneshot
ExecStart=/bin/sh -c 'echo InitiatorName=iqn.2016-04.com.flatcar.iscsi:$(</etc/machine-id) >/etc/iscsi/initiatorname.iscsi'