From a60d34a4c30e044876b384d5b8e499bf2f0555b4 Mon Sep 17 00:00:00 2001
From: Keith Jackson <keithallenjackson@gmail.com>
Date: Sat, 29 Aug 2026 12:55:45 -0500
Subject: [PATCH] tofu: bump k3s node memory_mib default 16384 -> 24576 (24
 GiB)
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Raise per-node RAM from 16 GiB to 24 GiB for proper failover headroom.
Matches the live rolling resize of the three k3s-dev VMs on Proxmox
(qm set --memory 24576 per node, one at a time, KSM enabled first).

Single memory_mib var applies to all three nodes via for_each, so a
future `tofu apply` would resize all three at once and break etcd
quorum — the resize MUST be done live/rolling, not via apply.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 infra/tofu/terraform.tfvars.example | 2 +-
 infra/tofu/variables.tf             | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/infra/tofu/terraform.tfvars.example b/infra/tofu/terraform.tfvars.example
index 94ddc4d..9f7c439 100644
--- a/infra/tofu/terraform.tfvars.example
+++ b/infra/tofu/terraform.tfvars.example
@@ -36,7 +36,7 @@ ssh_authorized_key = "ssh-ed25519 AAAA...replace-with-your-public-key... user@ho
 
 # --- per-node sizing ---
 # vcpu          = 6
-# memory_mib    = 16384
+# memory_mib    = 24576
 # os_disk_gib   = 40
 # data_disk_gib = 100
 # cpu_type      = "host"
diff --git a/infra/tofu/variables.tf b/infra/tofu/variables.tf
index 77d7452..471e0a5 100644
--- a/infra/tofu/variables.tf
+++ b/infra/tofu/variables.tf
@@ -83,9 +83,9 @@ variable "vcpu" {
 }
 
 variable "memory_mib" {
-  description = "RAM per node in MiB (16 GiB)."
+  description = "RAM per node in MiB (24 GiB)."
   type        = number
-  default     = 16384
+  default     = 24576
 }
 
 variable "os_disk_gib" {