proxmox-post-install/docs/02-configuration.md

02 - Configuring the Cluster (or Nodes)

Configurations are segmented per project/customer using isolated Ansible inventories. Best Practice: One customer (or one logical cluster) equals one inventory folder. Do not attempt to define multiple clusters within a single inventory to prevent cross-contamination (the "Blast Radius").

1. Create the Environment

Copy the template directory for your specific project:

cp -r inventories/_template inventories/<customer_name>
mv inventories/<customer_name>/hosts.yml.example inventories/<customer_name>/hosts.yml
mv inventories/<customer_name>/group_vars/all.yml.example inventories/<customer_name>/group_vars/all.yml

2. Configure hosts.yml (Topology & Licensing)

Define the target PVE nodes. Ansible defaults to the ansible_host IP for Corosync/DRBD. If a dedicated backend network is available, define priv_ip.

Licensing: Proxmox licenses are socket/node-specific. Insert the pve_enterprise_key directly under each host. If a node lacks a key, omit the variable entirely; Ansible will fall back to the pve-no-subscription repository automatically for that specific node.

all:
  children:
    proxmox:
      hosts:
        pve-node-01:
          ansible_host: 192.168.1.11
          priv_ip: 10.0.0.11
          pve_enterprise_key: "pve1c-111111111111"
        pve-node-02:
          ansible_host: 192.168.1.12
          priv_ip: 10.0.0.12
          # Omitted key: This node will use no-subscription

3. Configure group_vars/all.yml

• Deployment Toggles:
  • deploy_linstor: true (Provisions HCI/DRBD stack)
  • standalone_mode: false (Set to true if you are provisioning independent, unclustered servers).
• HA Controller: Define ha_pool, ha_vip (Virtual IP), and the CIDR prefix for the Linstor DB promoter.
• Storage Pools:
  • If mapping a raw disk (/dev/sda), the playbook invokes community.general.lvg to create the VG/Thin Pool.
  • If mapping an existing path (pve/data), LVM tasks are skipped, and the target is registered directly in Linstor.