Is there some standard procedure to retrofit cloud-init on an existing VM?

[vonhabsi]

I have a VM with a lot of custom configurations I want to turn into a template with cloud-init configuration.

Is that possible or permissible?

If it is are there some start up time settings or scripts I have to disable initially to allow the cloud-init do its thing, like some crontab or systemd configurations?

 

[bbgeek17]

Hi @vonhabsi , welcome to the forum.

CloudInit technology is not specific to PVE. Many resources are available online that can guide you in adapting your VM to use CloudInit, although it's not certain you need it.
I recommend making a full clone of your existing VM and experimenting on it. Even better, record all the steps needed for your customization and research Packer. It will allow you to build a new VM with all the packages you need.

If you want to continue with the CloudInit path - search online for "golden image" combined with your particular Linux flavor. I am certain you will find a few articles with useful information.

Good luck

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[fba]

Hi,
as far as I understand it, cloud-init is just a software package which runs once at next boot.
Like suggested: make a backup of your vm. Install the cloud-init package, add a cloud-init drive. Provide the yaml-files for cloud-init configuration and run the vm.
Process is described in detail in Proxmox VE documentation: https://pve.proxmox.com/wiki/Cloud-Init_Support

 

[bbgeek17]

as far as I understand it, cloud-init is just a software package which runs once at next boot.

Some sections run once in the lifetime of the VM, some run on every boot. One can check per-module specs here: https://cloudinit.readthedocs.io/en/latest/reference/modules.html

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[fba]

Some sections run once in the lifetime of the VM, some run on every boot. One can check per-module specs here: https://cloudinit.readthedocs.io/en/latest/reference/modules.html

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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

Hm, never noticed the Module frequency: always
Thanks for the advice.