From bcccd791484f4522d7cc7d1c83f9593ace79e5bc Mon Sep 17 00:00:00 2001
From: kasun <kasun.jayatilaka@gmail.com>
Date: Sun, 5 Jul 2026 02:08:43 +0200
Subject: [PATCH 1/3] decreased replicas for prometheus from 3 to 2

---
 03-k8s-infra/index.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/03-k8s-infra/index.ts b/03-k8s-infra/index.ts
index b0ccd60..e437d27 100644
--- a/03-k8s-infra/index.ts
+++ b/03-k8s-infra/index.ts
@@ -133,7 +133,7 @@ new k8s.apiextensions.CustomResource(
     version: "1.12.0",
     values: {
       defaultSettings: {
-        defaultReplicaCount: 3,
+        defaultReplicaCount: 2,
         podDeletionPolicyWhenNodeIsDown: "delete-pod-and-force-delete-pod",
       },
     },

From b803ec937cd9eea9e520f278fee6d2d98bb1b09b Mon Sep 17 00:00:00 2001
From: kasun <kasun.jayatilaka@gmail.com>
Date: Sun, 5 Jul 2026 03:45:06 +0200
Subject: [PATCH 2/3] added mounting of  dedicated longhorn storage to worker
 nodes.

---
 02-k8s-bootstrap/index.ts | 27 ++++++++++++++++++++++++++-
 1 file changed, 26 insertions(+), 1 deletion(-)

diff --git a/02-k8s-bootstrap/index.ts b/02-k8s-bootstrap/index.ts
index 1836e69..5732777 100644
--- a/02-k8s-bootstrap/index.ts
+++ b/02-k8s-bootstrap/index.ts
@@ -215,7 +215,32 @@ const joinWorker2 = new command.remote.Command(
 );
 
 // ---------------------------------------------------------------------------
-// Step 5: Read kubeconfig from master-1, patch server URL for external access
+// Step 5: Format and mount Longhorn disks
+// ---------------------------------------------------------------------------
+
+const workers = [worker1Ip, worker2Ip];
+const workerSshReader = [waitWorker1Ssh, waitWorker2Ssh];
+
+const mountLonghornDisks = workers.map((worker, i) => {
+  return new command.remote.Command(
+    `mount-longhorn-disk-${i}`,
+    {
+      connection: conn(worker),
+      create: `set -euo pipefail; 
+        DISK_ID=$(ls /dev/disk/by-id/ | grep 'scsi1'); 
+        DISK_PATH="/dev/disk/by-id/$DISK_ID"; 
+        sudo blkid "$DISK_PATH" >/dev/null 2>&1 || sudo mkfs.ext4 "$DISK_PATH"; 
+        sudo mkdir -p /mnt/longhorn-extra; 
+        echo ""$DISK_PATH" /mnt/longhorn-extra  ext4  defaults,nofail  0  2" | sudo tee -a /etc/fstab; 
+        sudo mount -a; 
+        df -h /mnt/longhorn-extra`,
+    },
+    { dependsOn: workerSshReader[i] },
+  );
+});
+
+// ---------------------------------------------------------------------------
+// Step 6: Read kubeconfig from master-1, patch server URL for external access
 // ---------------------------------------------------------------------------
 
 const getKubeconfig = new command.remote.Command(

From 135458c9acceb95efa710faf8d903cc50cbbc1a7 Mon Sep 17 00:00:00 2001
From: kasun <kasun.jayatilaka@gmail.com>
Date: Sun, 5 Jul 2026 03:46:42 +0200
Subject: [PATCH 3/3] added patch to longhorn to use dedicated mount for
 longhorn to avoid using root disk and causing diskPressure

---
 03-k8s-infra/index.ts | 36 ++++++++++++++++++++++++++++++++++--
 1 file changed, 34 insertions(+), 2 deletions(-)

diff --git a/03-k8s-infra/index.ts b/03-k8s-infra/index.ts
index e437d27..1af3eab 100644
--- a/03-k8s-infra/index.ts
+++ b/03-k8s-infra/index.ts
@@ -122,7 +122,7 @@ new k8s.apiextensions.CustomResource(
 
 // ── Longhorn ──────────────────────────────────────────────────────────────
 
- new k8s.helm.v3.Release(
+const longhorn = new k8s.helm.v3.Release(
   "longhorn",
   {
     name: "longhorn",
@@ -134,13 +134,45 @@ new k8s.apiextensions.CustomResource(
     values: {
       defaultSettings: {
         defaultReplicaCount: 2,
-        podDeletionPolicyWhenNodeIsDown: "delete-pod-and-force-delete-pod",
+        nodeDownPodDeletionPolicy: "delete-both-statefulset-and-deployment-pod",
+        createDefaultDiskLabeledNodes: true,
       },
     },
   },
   opts(),
 );
 
+// Patches Longhorn instances to use the mountend Longhorn storage on the worker nodes.
+const workerLonghornDiskPatches = ["k3s-worker-1", "k3s-worker-2"].map(
+  (nodeName) =>
+    new k8s.apiextensions.CustomResourcePatch(
+      `${nodeName}-longhorn-disks`,
+      {
+        apiVersion: "longhorn.io/v1beta2",
+        kind: "Node",
+        metadata: {
+          name: nodeName,
+          namespace: "longhorn-system",
+          annotations: { "pulumi.com/patchForce": "true" },
+        },
+        spec: {
+          disks: {
+            "longhorn-extra": {
+              allowScheduling: true,
+              diskDriver: "",
+              diskType: "filesystem",
+              evictionRequested: false,
+              path: "/mnt/longhorn-extra",
+              storageReserved: 0,
+              tags: [],
+            },
+          },
+        },
+      },
+      opts({ dependsOn: [longhorn] }),
+    ),
+);
+
 // ── kube-vip ────────────
 
 const kubeVipNamespace = "kube-system";