cloud-init reset root password in proxmox is not working

[jegan]

Hello,

Proxmox Version 6.2-4
Template VM OS : Centos 8
Cloud-init Version : 18.5

I am try to reset root password while on boot, it's not working in cloud-init.

This is my cloud-init config file,
[root@c8templatserverip ~]# cat /etc/cloud/cloud.cfg
users:
- default

disable_root: 1
ssh_pwauth: 1

mount_default_fields: [~, ~, 'auto', 'defaults,nofail,x-systemd.requires=cloud-init.service', '0', '2']
resize_rootfs_tmp: /dev
ssh_deletekeys: 0
ssh_genkeytypes: ~
syslog_fix_perms: ~
disable_vmware_customization: false

cloud_init_modules:
- disk_setup
- migrator
- bootcmd
- write-files
- growpart
- resizefs
- set_hostname
- update_hostname
- update_etc_hosts
- rsyslog
- users-groups
- ssh

cloud_config_modules:
- mounts
- locale
- set-passwords
- rh_subscription
- yum-add-repo
- package-update-upgrade-install
- timezone
- puppet
- chef
- salt-minion
- mcollective
- disable-ec2-metadata
- runcmd

cloud_final_modules:
- rightscale_userdata
- scripts-per-once
- scripts-per-boot
- scripts-per-instance
- scripts-user
- ssh-authkey-fingerprints
- keys-to-console
- phone-home
- final-message
- power-state-change

system_info:
default_user:
name: cloud-user
lock_passwd: true
gecos: Cloud User
groups: [adm, systemd-journal]
sudo: ["ALL=(ALL) NOPASSWD:ALL"]
shell: /bin/bash
distro: rhel
paths:
cloud_dir: /var/lib/cloud
templates_dir: /etc/cloud/templates
ssh_svcname: sshd

# vim:syntax=yaml