kazulog@sv1:~$ mv nested-user-data.yaml user-data.yaml
kazulog@sv1:~$ cat user-data.yaml | head -6
#cloud-config
hostname: web01
manage_etc_hosts: true
timezone: Asia/Tokyo
users:
  - name: kazulog
kazulog@sv1:~$ cloud-localds seed.iso user-data.yaml
kazulog@sv1:~$ ls -lh seed.iso
-rw-rw-r-- 1 kazulog kazulog 366K Sep 10 21:19 seed.iso
kazulog@sv1:~$ isoinfo -i seed.iso -l 2>/dev/null | tail -5
Directory listing of /
d---------   0    0    0            2048 Sep 10 2026 [     28 02]  . 
d---------   0    0    0            2048 Sep 10 2026 [     28 02]  .. 
----------   0    0    0              33 Sep 10 2026 [     31 00]  META_DAT.;1 
----------   0    0    0             478 Sep 10 2026 [     32 00]  USER_DAT.;1