From 2cf35d0f76fe3b9b7395a7a4cedd5e65571b5753 Mon Sep 17 00:00:00 2001
From: Mayne0213 <bluemayne0213@icloud.com>
Date: Thu, 8 Jan 2026 17:35:25 +0900
Subject: [PATCH] FEAT(loki): configure storage and HA

- Rename extraVolume to avoid duplicate name
- Add emptyDir for /var/loki cache
- Migrate to shared storage with MinIO
- Configure HA with 2 replicas
- Revert to single replica for Single Binary mode
---
 grafana/helm-values.yaml | 12 ++++++++++++
 loki/helm-values.yaml    | 19 ++++++++++++++-----
 2 files changed, 26 insertions(+), 5 deletions(-)

diff --git a/grafana/helm-values.yaml b/grafana/helm-values.yaml
index 557c4e4..bf1027c 100644
--- a/grafana/helm-values.yaml
+++ b/grafana/helm-values.yaml
@@ -3,6 +3,18 @@
 
 fullnameOverride: grafana
 
+replicas: 2
+
+affinity:
+  podAntiAffinity:
+    preferredDuringSchedulingIgnoredDuringExecution:
+    - weight: 100
+      podAffinityTerm:
+        labelSelector:
+          matchLabels:
+            app.kubernetes.io/name: grafana
+        topologyKey: kubernetes.io/hostname
+
 admin:
   user: bluemayne
   # Password is managed via SealedSecret: grafana-admin-password
diff --git a/loki/helm-values.yaml b/loki/helm-values.yaml
index 40e5b2f..b93908a 100644
--- a/loki/helm-values.yaml
+++ b/loki/helm-values.yaml
@@ -20,9 +20,9 @@ loki:
       ruler: loki
       admin: loki
 
-  # Single binary mode for simplicity
+  # Single binary mode with 2 replicas
   commonConfig:
-    replication_factor: 1
+    replication_factor: 2
 
   # Schema config
   schemaConfig:
@@ -49,17 +49,26 @@ loki:
 deploymentMode: SingleBinary
 
 singleBinary:
-  replicas: 1
+  replicas: 2
   persistence:
     enabled: false
+  affinity:
+    podAntiAffinity:
+      preferredDuringSchedulingIgnoredDuringExecution:
+      - weight: 100
+        podAffinityTerm:
+          labelSelector:
+            matchLabels:
+              app.kubernetes.io/name: loki
+          topologyKey: kubernetes.io/hostname
   extraEnvFrom:
     - secretRef:
         name: minio-s3-credentials
   extraVolumes:
-    - name: tmp
+    - name: loki-data
       emptyDir: {}
   extraVolumeMounts:
-    - name: tmp
+    - name: loki-data
       mountPath: /var/loki
   resources:
     requests: