Proxmox Certificates

Open Proxmox gui and click on "Datacenter->ACME" and add new account using Let's Encrypt V2 (if you want test it then I recommend that you choose Let's Encrypt V2 Staging).

At same screen click on "Add" button of "Challenge Plugins" and type: Plugin ID: gcloud DNS API: gcloud API Data: HOME=/home/nobody

Now edit your plugin and set the validation delay to 120

Go to Proxmox shell and install Google Cloud SDK:

Add the Cloud SDK distribution URI as a package source echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] http://packages.cloud.google.com/apt cloud-sdk main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list

Import the Google Cloud Platform public key curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key --keyring /usr/share/keyrings/cloud.google.gpg add -

Update the package list and install the Cloud SDK apt-get update && apt-get install google-cloud-sdk

Init Google Cloud (gcloud) access and select project gcloud init

Replicate configuration for nobody user

Create /home/nobody directory mkdir /home/nobody

Create /home/.config directory cd /home/nobody mkdir .config

Copy Google Cloud settings cd .config cp -pr /root/.config/gcloud/ .

Set nobody user and nogroup group to /home/nobody recursively chown -R nobody:nogroup /home/nobody

now goto the node, system, certificates

• set the Using Account to your ACME account
• click add, set the Challenge to DNS, set the plugin, set the full domain.

now click the Order certificates now button