Re: [pve-devel] [PATCH 2/8 container] cloudinit: basic implementation

From: Fiona Ebner <f.ebner@proxmox.com>
To: Mira Limbeck <m.limbeck@proxmox.com>,
	Proxmox VE development discussion <pve-devel@lists.proxmox.com>,
	Daniel Herzig <d.herzig@proxmox.com>
Subject: Re: [pve-devel] [PATCH 2/8 container] cloudinit: basic implementation
Date: Thu, 13 Feb 2025 13:02:43 +0100	[thread overview]
Message-ID: <20c54275-0148-4eea-b83f-63b7741ad4db@proxmox.com> (raw)
In-Reply-To: <080f00b4-2530-4369-9e9a-3d7e44c1cbed@proxmox.com>

Am 13.02.25 um 12:29 schrieb Mira Limbeck:
> On 2/13/25 12:01, Fiona Ebner wrote:
>> Am 10.02.25 um 13:07 schrieb Daniel Herzig:
>>> +sub gen_cloudinit_metadata {
>>> +    my ($user) = @_;
>>> +
>>> +    my $uuid_str = Digest::SHA::sha1_hex($user);
>>
>> Hmm, shouldn't this also depend on the vendor data? Otherwise, if only
>> the vendor data changes, then it will still have the same instance ID.
>>
>> Seems like for VMs, we only use user and network data here.
>>
>> @Mira do you know more by chance?
> I don't think vendor-data should be part of the instance-id. It's used
> to create a first configuration that a user can override via the user
> config.
> The vendor-data won't be used again once it's already configured.
> I'm not a 100% sure, but changing the instance-id leads to rerunning
> lots of modules (e.g. User, Network and others), but the vendor-data
> parts do not.
> 
> Only a complete `cloud-init clean` should trigger the modules using
> vendor-data to run again.
> 
> 
> https://cloudinit.readthedocs.io/en/latest/explanation/vendordata.html#vendor-data

Oh, thank you for the explanation!

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