152 lines
4.7 KiB
Terraform
152 lines
4.7 KiB
Terraform
module "pve_vm" {
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source = "../../modules/pve_vm"
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for_each = local.vm_list
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node_name = each.value.node_name
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vm_name = each.key
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vm_cpu = each.value.vm_cpu
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vm_ram = each.value.vm_ram
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vm_vlan = each.value.vm_vlan
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vm_tags = ["${var.vm_env}"]
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}
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locals {
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node_stats = [
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for i, name in data.proxmox_virtual_environment_nodes.pve_nodes.names : {
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name = name
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free_mib = floor(data.proxmox_virtual_environment_nodes.pve_nodes.memory_available[i] / 1024 / 1024)
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}
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if data.proxmox_virtual_environment_nodes.pve_nodes.online[i]
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]
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max_free_mib = length(local.node_stats) > 0 ? max([for node in local.node_stats : node.free_mib]...) : 0
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# Online nodes ordered by available memory, most available first (name as tie-break)
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node_order = [
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for key in sort([
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for node in local.node_stats : "${format("%012d", local.max_free_mib - node.free_mib)}|${node.name}"
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]) : split("|", key)[1]
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]
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node_free = { for node in local.node_stats : node.name => node.free_mib }
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master_ram = var.vm_attr.master.ram
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worker_ram = var.vm_attr.worker.ram
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# Masters: one per node, only on nodes with enough free memory
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feasible_masters = [
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for node in local.node_order : node
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if local.node_free[node] >= local.master_ram
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]
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master_nodes = length(local.feasible_masters) >= var.master_count ? [
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for i in range(var.master_count) : local.feasible_masters[i]
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] : []
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master_hosts = toset(local.master_nodes)
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# Residual capacity per node after masters are reserved
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residual_mib = {
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for node in local.node_order :
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node => local.node_free[node] - (contains(local.master_hosts, node) ? local.master_ram : 0)
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}
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max_residual_mib = length(local.node_order) > 0 ? max([for node in local.node_order : local.residual_mib[node]]...) : 0
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worker_slots = {
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for node in local.node_order : node => floor(local.residual_mib[node] / local.worker_ram)
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}
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# Workers: pack nodes with residual capacity, most available first (name as tie-break)
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worker_precedence = [
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for key in sort([
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for node in local.node_order :
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"${format("%012d", local.max_residual_mib - local.residual_mib[node])}|${node}"
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if local.worker_slots[node] >= 1
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]) : split("|", key)[1]
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]
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worker_slots_list = [for node in local.worker_precedence : local.worker_slots[node]]
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# Water-fill: each node takes workers until it runs out of capacity or demand is met
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worker_placed = [
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for i in range(length(local.worker_precedence)) :
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min(local.worker_slots_list[i], max(0, var.worker_count - try(sum([for j in range(i) : local.worker_slots_list[j]]), 0)))
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]
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worker_prefix = [
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for i in range(length(local.worker_placed)) :
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try(sum([for j in range(i) : local.worker_placed[j]]), 0)
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]
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master_placements = [
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for i in range(length(local.master_nodes)) : {
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vm_name = "kub-${var.vm_env}-m${format("%01d", i + 1)}"
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vm_role = "master"
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vm_node = local.master_nodes[i]
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}
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]
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worker_placements = flatten([
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for p in range(length(local.worker_precedence)) : [
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for k in range(local.worker_placed[p]) : {
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vm_name = "kub-${var.vm_env}-w${format("%01d", local.worker_prefix[p] + k + 1)}"
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vm_role = "worker"
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vm_node = local.worker_precedence[p]
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}
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]
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])
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vm_list = {
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for vm in concat(local.master_placements, local.worker_placements) :
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vm.vm_name => {
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node_name = vm.vm_node
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vm_cpu = var.vm_attr[vm.vm_role].cpu
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vm_ram = var.vm_attr[vm.vm_role].ram
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vm_vlan = var.vm_attr[vm.vm_role].vlan
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vm_role = vm.vm_role
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}
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}
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roles = toset([for vm in local.vm_list : vm.vm_role])
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}
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data "proxmox_virtual_environment_nodes" "pve_nodes" {}
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check "proxmox_nodes" {
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assert {
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condition = length(local.node_order) > 0
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error_message = "No online Proxmox node available for deployment."
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}
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}
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check "master_capacity" {
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assert {
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condition = length(local.master_nodes) == var.master_count
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error_message = "Cannot place ${var.master_count} master(s): only ${length(local.feasible_masters)} online node(s) have at least ${local.master_ram} MiB free memory."
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}
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}
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check "worker_capacity" {
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assert {
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condition = try(sum(local.worker_placed), 0) == var.worker_count
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error_message = "Cannot place ${var.worker_count} worker(s) (${local.worker_ram} MiB each): residual free capacity on online nodes fits only ${try(sum(local.worker_placed), 0)} worker(s)."
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}
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}
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output "vm_ip" {
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value = { for k, v in module.pve_vm : k => v.vm_ip }
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}
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resource "ansible_group" "vm_groups" {
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for_each = local.roles
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name = each.key
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}
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resource "ansible_host" "vm_hosts" {
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for_each = module.pve_vm
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name = each.key
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variables = {
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ansible_host = each.value.vm_ip
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}
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groups = [local.vm_list[each.key].vm_role]
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} |