infra/stacks/novelapp/main.tf
Viktor Barzin 23019da8e5 equalize memory req=lim across 70+ containers using Prometheus 7d max data
After node2 OOM incident, right-size memory across the cluster by setting
requests=limits based on max_over_time(container_memory_working_set_bytes[7d])
with 1.3x headroom. Eliminates ~37Gi overcommit gap.

Categories:
- Safe equalization (50 containers): set req=lim where max7d well within target
- Limit increases (8 containers): raise limits for services spiking above current
- No Prometheus data (12 containers): conservatively set lim=req
- Exception: nextcloud keeps req=256Mi/lim=8Gi due to Apache memory spikes

Also increased dbaas namespace quota from 12Gi to 16Gi to accommodate mysql
4Gi limits across 3 replicas.
2026-03-14 21:46:49 +00:00

158 lines
3.5 KiB
HCL

variable "tls_secret_name" {
type = string
sensitive = true
}
resource "kubernetes_namespace" "novelapp" {
metadata {
name = "novelapp"
labels = {
"istio-injection" : "disabled"
tier = local.tiers.aux
}
}
}
module "tls_secret" {
source = "../../modules/kubernetes/setup_tls_secret"
namespace = kubernetes_namespace.novelapp.metadata[0].name
tls_secret_name = var.tls_secret_name
}
resource "kubernetes_persistent_volume_claim" "novelapp-data" {
metadata {
name = "novelapp-data"
namespace = kubernetes_namespace.novelapp.metadata[0].name
}
spec {
access_modes = ["ReadWriteOnce"]
storage_class_name = "iscsi-truenas"
resources {
requests = {
storage = "1Gi"
}
}
}
}
resource "kubernetes_deployment" "novelapp" {
metadata {
name = "novelapp"
namespace = kubernetes_namespace.novelapp.metadata[0].name
labels = {
app = "novelapp"
tier = local.tiers.aux
}
}
lifecycle {
ignore_changes = [
spec[0].template[0].spec[0].container[0].image,
]
}
spec {
replicas = 1
strategy {
type = "Recreate"
}
selector {
match_labels = {
app = "novelapp"
}
}
template {
metadata {
labels = {
app = "novelapp"
}
}
spec {
volume {
name = "data"
persistent_volume_claim {
claim_name = kubernetes_persistent_volume_claim.novelapp-data.metadata[0].name
}
}
container {
image = "mghee/novelapp:latest"
name = "novelapp"
image_pull_policy = "Always"
env {
name = "NODE_ENV"
value = "production"
}
env {
name = "DB_PATH"
value = "/app/data/novelapp.db"
}
env {
name = "DISABLE_BROWSER_SCRAPING"
value = "true"
}
env {
name = "PORT"
value = "3000"
}
volume_mount {
name = "data"
mount_path = "/app/data"
}
port {
container_port = 3000
}
resources {
requests = {
memory = "64Mi"
cpu = "10m"
}
limits = {
memory = "64Mi"
}
}
}
}
}
}
}
resource "kubernetes_service" "novelapp" {
metadata {
name = "novelapp"
namespace = kubernetes_namespace.novelapp.metadata[0].name
labels = {
"app" = "novelapp"
}
}
spec {
selector = {
app = "novelapp"
}
port {
name = "http"
port = 80
target_port = 3000
}
}
}
module "ingress" {
source = "../../modules/kubernetes/ingress_factory"
namespace = kubernetes_namespace.novelapp.metadata[0].name
name = "novelapp"
tls_secret_name = var.tls_secret_name
extra_annotations = {
"gethomepage.dev/enabled" = "true"
"gethomepage.dev/name" = "NovelApp"
"gethomepage.dev/description" = "Web novel tracker"
"gethomepage.dev/icon" = "mdi-book-open-page-variant"
"gethomepage.dev/group" = "Other"
"gethomepage.dev/pod-selector" = ""
}
}
# Sealed Secrets — encrypted secrets safe to commit to git
resource "kubernetes_manifest" "sealed_secrets" {
for_each = fileset(path.module, "sealed-*.yaml")
manifest = yamldecode(file("${path.module}/${each.value}"))
}