infra/stacks/speedtest/main.tf
Viktor Barzin 60173ac35c right-size memory: set requests=limits based on actual usage
- Set memory requests = limits across 56 stacks to prevent overcommit
- Right-sized limits based on actual pod usage (2x actual, rounded up)
- Scaled down trading-bot (replicas=0) to free memory
- Fixed OOMKilled services: forgejo, dawarich, health, meshcentral,
  paperless-ngx, vault auto-unseal, rybbit, whisper, openclaw, clickhouse
- Added startup+liveness probes to calibre-web
- Bumped inotify limits on nodes 2,3 (max_user_instances 128->8192)

Post node2 OOM incident (2026-03-14). Previous kubelet config had no
kubeReserved/systemReserved set, allowing pods to starve the kernel.
2026-03-18 08:03:59 +00:00

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variable "tls_secret_name" {
type = string
sensitive = true
}
variable "nfs_server" { type = string }
variable "mysql_host" { type = string }
data "vault_kv_secret_v2" "secrets" {
mount = "secret"
name = "speedtest"
}
resource "kubernetes_namespace" "speedtest" {
metadata {
name = "speedtest"
labels = {
tier = local.tiers.aux
}
}
}
module "tls_secret" {
source = "../../modules/kubernetes/setup_tls_secret"
namespace = kubernetes_namespace.speedtest.metadata[0].name
tls_secret_name = var.tls_secret_name
}
resource "random_id" "secret_key" {
byte_length = 32 # 32 bytes × 2 hex chars = 64 hex characters
}
module "nfs_config" {
source = "../../modules/kubernetes/nfs_volume"
name = "speedtest-config"
namespace = kubernetes_namespace.speedtest.metadata[0].name
nfs_server = var.nfs_server
nfs_path = "/mnt/main/speedtest"
}
resource "kubernetes_deployment" "speedtest" {
metadata {
name = "speedtest"
namespace = kubernetes_namespace.speedtest.metadata[0].name
labels = {
app = "speedtest"
tier = local.tiers.aux
}
}
spec {
replicas = 1
selector {
match_labels = {
app = "speedtest"
}
}
template {
metadata {
labels = {
app = "speedtest"
}
}
spec {
container {
image = "lscr.io/linuxserver/speedtest-tracker:latest"
name = "speedtest"
port {
container_port = 80
}
env {
name = "PUID"
value = 1000
}
env {
name = "PGID"
value = 1000
}
env {
name = "APP_KEY"
value = "base64:${random_id.secret_key.b64_std}"
}
env {
name = "SPEEDTEST_SCHEDULE"
value = "0 * * * *"
}
# env {
# name = "SPEEDTEST_SERVERS"
# # Sofia speedtest servers - https://c.speedtest.net/speedtest-servers-static.php
# value = "7617,17787,11348,37980,54640,27843,57118,10754,20191,29617"
# }
env {
name = "APP_URL"
value = "https://speedtest.viktorbarzin.me"
}
env {
name = "DB_CONNECTION"
value = "mysql"
}
env {
name = "DB_HOST"
value = var.mysql_host
}
env {
name = "DB_DATABASE"
value = "speedtest"
}
env {
name = "DB_USERNAME"
value = "speedtest"
}
env {
name = "DB_PASSWORD"
value = data.vault_kv_secret_v2.secrets.data["db_password"]
}
env {
name = "APP_TIMEZONE"
value = "Europe/Sofia"
}
resources {
requests = {
cpu = "25m"
memory = "128Mi"
}
limits = {
memory = "128Mi"
}
}
volume_mount {
name = "config"
mount_path = "/config"
}
}
volume {
name = "config"
persistent_volume_claim {
claim_name = module.nfs_config.claim_name
}
}
}
}
}
}
resource "kubernetes_service" "speedtest" {
metadata {
name = "speedtest"
namespace = kubernetes_namespace.speedtest.metadata[0].name
labels = {
"app" = "speedtest"
}
annotations = {
"prometheus.io/scrape" = "true"
"prometheus.io/path" = "/prometheus"
"prometheus.io/port" = "80"
}
}
spec {
selector = {
app = "speedtest"
}
port {
name = "http"
port = 80
target_port = 80
}
}
}
module "ingress" {
source = "../../modules/kubernetes/ingress_factory"
namespace = kubernetes_namespace.speedtest.metadata[0].name
name = "speedtest"
tls_secret_name = var.tls_secret_name
protected = true
extra_annotations = {
"gethomepage.dev/enabled" = "true"
"gethomepage.dev/name" = "Speedtest"
"gethomepage.dev/description" = "Internet speed tracker"
"gethomepage.dev/icon" = "speedtest-tracker.png"
"gethomepage.dev/group" = "Infrastructure"
"gethomepage.dev/widget.type" = "speedtest"
"gethomepage.dev/widget.url" = "http://speedtest.speedtest.svc.cluster.local"
"gethomepage.dev/pod-selector" = ""
}
}