diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/configmap.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/configmap.yaml
new file mode 100644
index 000000000..1463e95ff
--- /dev/null
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/configmap.yaml
@@ -0,0 +1,11 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: mariadb-config
+data:
+  my.cnf: |
+    [mysqld]
+    innodb_buffer_pool_size = 2G
+    innodb_log_file_size = 512M
+    innodb_flush_log_at_trx_commit = 2
+    innodb_write_io_threads = 8
diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
index 144e1ba0c..80b21e6c8 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/app-templates/seichi-debug-minecraft-on-seichiassist-pr/templates/mariadb/mariadb.yaml
@@ -74,14 +74,16 @@ spec:
           name: storage
         - mountPath: /docker-entrypoint-initdb.d
           name: sqldump-volume
+        - name: mariadb-config
+          mountPath: /etc/mysql/conf.d
       initContainers:
       - name: init-0
         image: mariadb:10.11.6
         imagePullPolicy: IfNotPresent
         resources:
           requests:
-            cpu: 4000m
-            memory: 4096Mi
+            cpu: 4
+            memory: 6Gi
         env:
         - name: DB_PASSWORD
           valueFrom:
@@ -101,6 +103,12 @@ spec:
       - name: storage
         emptyDir:
           medium: Memory
-          sizeLimit: 4Gi
+          sizeLimit: 6Gi
       - name: sqldump-volume
         emptyDir: {}
+      - name: mariadb-config
+        configMap:
+          name: mariadb-config
+          items:
+          - key: my.cnf
+            path: my.cnf