diff --git a/src/main/resources/fess_indices/.fess_config.access_token.json b/src/main/resources/fess_indices/.fess_config.access_token.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.access_token.json
+++ b/src/main/resources/fess_indices/.fess_config.access_token.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.bad_word.json b/src/main/resources/fess_indices/.fess_config.bad_word.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.bad_word.json
+++ b/src/main/resources/fess_indices/.fess_config.bad_word.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.boost_document_rule.json b/src/main/resources/fess_indices/.fess_config.boost_document_rule.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.boost_document_rule.json
+++ b/src/main/resources/fess_indices/.fess_config.boost_document_rule.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.crawling_info.json b/src/main/resources/fess_indices/.fess_config.crawling_info.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.crawling_info.json
+++ b/src/main/resources/fess_indices/.fess_config.crawling_info.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.crawling_info_param.json b/src/main/resources/fess_indices/.fess_config.crawling_info_param.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.crawling_info_param.json
+++ b/src/main/resources/fess_indices/.fess_config.crawling_info_param.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.data_config.json b/src/main/resources/fess_indices/.fess_config.data_config.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.data_config.json
+++ b/src/main/resources/fess_indices/.fess_config.data_config.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.data_config_to_label.json b/src/main/resources/fess_indices/.fess_config.data_config_to_label.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.data_config_to_label.json
+++ b/src/main/resources/fess_indices/.fess_config.data_config_to_label.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.data_config_to_role.json b/src/main/resources/fess_indices/.fess_config.data_config_to_role.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.data_config_to_role.json
+++ b/src/main/resources/fess_indices/.fess_config.data_config_to_role.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.duplicate_host.json b/src/main/resources/fess_indices/.fess_config.duplicate_host.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.duplicate_host.json
+++ b/src/main/resources/fess_indices/.fess_config.duplicate_host.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.elevate_word.json b/src/main/resources/fess_indices/.fess_config.elevate_word.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.elevate_word.json
+++ b/src/main/resources/fess_indices/.fess_config.elevate_word.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.elevate_word_to_label.json b/src/main/resources/fess_indices/.fess_config.elevate_word_to_label.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.elevate_word_to_label.json
+++ b/src/main/resources/fess_indices/.fess_config.elevate_word_to_label.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.failure_url.json b/src/main/resources/fess_indices/.fess_config.failure_url.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.failure_url.json
+++ b/src/main/resources/fess_indices/.fess_config.failure_url.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.file_authentication.json b/src/main/resources/fess_indices/.fess_config.file_authentication.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.file_authentication.json
+++ b/src/main/resources/fess_indices/.fess_config.file_authentication.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.file_config.json b/src/main/resources/fess_indices/.fess_config.file_config.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.file_config.json
+++ b/src/main/resources/fess_indices/.fess_config.file_config.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.file_config_to_label.json b/src/main/resources/fess_indices/.fess_config.file_config_to_label.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.file_config_to_label.json
+++ b/src/main/resources/fess_indices/.fess_config.file_config_to_label.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.file_config_to_role.json b/src/main/resources/fess_indices/.fess_config.file_config_to_role.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.file_config_to_role.json
+++ b/src/main/resources/fess_indices/.fess_config.file_config_to_role.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.job_log.json b/src/main/resources/fess_indices/.fess_config.job_log.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.job_log.json
+++ b/src/main/resources/fess_indices/.fess_config.job_log.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.key_match.json b/src/main/resources/fess_indices/.fess_config.key_match.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.key_match.json
+++ b/src/main/resources/fess_indices/.fess_config.key_match.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.label_to_role.json b/src/main/resources/fess_indices/.fess_config.label_to_role.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.label_to_role.json
+++ b/src/main/resources/fess_indices/.fess_config.label_to_role.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.label_type.json b/src/main/resources/fess_indices/.fess_config.label_type.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.label_type.json
+++ b/src/main/resources/fess_indices/.fess_config.label_type.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.path_mapping.json b/src/main/resources/fess_indices/.fess_config.path_mapping.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.path_mapping.json
+++ b/src/main/resources/fess_indices/.fess_config.path_mapping.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.related_content.json b/src/main/resources/fess_indices/.fess_config.related_content.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.related_content.json
+++ b/src/main/resources/fess_indices/.fess_config.related_content.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.related_query.json b/src/main/resources/fess_indices/.fess_config.related_query.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.related_query.json
+++ b/src/main/resources/fess_indices/.fess_config.related_query.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.request_header.json b/src/main/resources/fess_indices/.fess_config.request_header.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.request_header.json
+++ b/src/main/resources/fess_indices/.fess_config.request_header.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.role_type.json b/src/main/resources/fess_indices/.fess_config.role_type.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.role_type.json
+++ b/src/main/resources/fess_indices/.fess_config.role_type.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.scheduled_job.json b/src/main/resources/fess_indices/.fess_config.scheduled_job.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.scheduled_job.json
+++ b/src/main/resources/fess_indices/.fess_config.scheduled_job.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.thumbnail_queue.json b/src/main/resources/fess_indices/.fess_config.thumbnail_queue.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.thumbnail_queue.json
+++ b/src/main/resources/fess_indices/.fess_config.thumbnail_queue.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.web_authentication.json b/src/main/resources/fess_indices/.fess_config.web_authentication.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.web_authentication.json
+++ b/src/main/resources/fess_indices/.fess_config.web_authentication.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.web_config.json b/src/main/resources/fess_indices/.fess_config.web_config.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.web_config.json
+++ b/src/main/resources/fess_indices/.fess_config.web_config.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.web_config_to_label.json b/src/main/resources/fess_indices/.fess_config.web_config_to_label.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.web_config_to_label.json
+++ b/src/main/resources/fess_indices/.fess_config.web_config_to_label.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_config.web_config_to_role.json b/src/main/resources/fess_indices/.fess_config.web_config_to_role.json
index d4d25b889..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_config.web_config_to_role.json
+++ b/src/main/resources/fess_indices/.fess_config.web_config_to_role.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 2,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_user.group.json b/src/main/resources/fess_indices/.fess_user.group.json
index 8e0985611..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_user.group.json
+++ b/src/main/resources/fess_indices/.fess_user.group.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 5,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_user.role.json b/src/main/resources/fess_indices/.fess_user.role.json
index 8e0985611..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_user.role.json
+++ b/src/main/resources/fess_indices/.fess_user.role.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 5,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/.fess_user.user.json b/src/main/resources/fess_indices/.fess_user.user.json
index 8e0985611..8f94f93c2 100644
--- a/src/main/resources/fess_indices/.fess_user.user.json
+++ b/src/main/resources/fess_indices/.fess_user.user.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 5,
+      "number_of_shards": 1,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/fess_log.click_log.json b/src/main/resources/fess_indices/fess_log.click_log.json
index 13a336d0b..8e0985611 100644
--- a/src/main/resources/fess_indices/fess_log.click_log.json
+++ b/src/main/resources/fess_indices/fess_log.click_log.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 10,
+      "number_of_shards": 5,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/fess_log.favorite_log.json b/src/main/resources/fess_indices/fess_log.favorite_log.json
index 13a336d0b..8e0985611 100644
--- a/src/main/resources/fess_indices/fess_log.favorite_log.json
+++ b/src/main/resources/fess_indices/fess_log.favorite_log.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 10,
+      "number_of_shards": 5,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/fess_log.search_log.json b/src/main/resources/fess_indices/fess_log.search_log.json
index 13a336d0b..8e0985611 100644
--- a/src/main/resources/fess_indices/fess_log.search_log.json
+++ b/src/main/resources/fess_indices/fess_log.search_log.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 10,
+      "number_of_shards": 5,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }
diff --git a/src/main/resources/fess_indices/fess_log.user_info.json b/src/main/resources/fess_indices/fess_log.user_info.json
index 13a336d0b..8e0985611 100644
--- a/src/main/resources/fess_indices/fess_log.user_info.json
+++ b/src/main/resources/fess_indices/fess_log.user_info.json
@@ -2,7 +2,7 @@
   "settings": {
     "index": {
       "refresh_interval": "1s",
-      "number_of_shards": 10,
+      "number_of_shards": 5,
       "number_of_replicas": 0,
       "auto_expand_replicas": "0-1"
     }