Merge pull request #286 from haiwen/optimize_doc_in_es_server

feat: add details in increasing mmapfs count

manual/docker/docker-compose/pro/11.0/docker-compose.yml

@@ -19,18 +19,18 @@ services:
       - seafile-net
 
   elasticsearch:
-    image: elasticsearch:8.6.2
+    image: elasticsearch:8.13.0
     container_name: seafile-elasticsearch
     environment:
       - discovery.type=single-node
       - bootstrap.memory_lock=true
-      - "ES_JAVA_OPTS=-Xms1g -Xmx1g"
+      - "ES_JAVA_OPTS=-Xms2g -Xmx2g"
       - "xpack.security.enabled=false"
     ulimits:
       memlock:
         soft: -1
         hard: -1
-    mem_limit: 2g
+    mem_limit: 4g
     volumes:
       - /opt/seafile-elasticsearch/data:/usr/share/elasticsearch/data  # Requested, specifies the path to Elasticsearch data persistent store.
     networks:

manual/docker/pro-edition/deploy_seafile_pro_with_docker.md

@@ -3,7 +3,20 @@
 This manual explains how to deploy and run Seafile Server Professional Edition (Seafile PE) on a Linux server using Docker and Docker Compose. The deployment has been tested for Debian/Ubuntu and CentOS, but Seafile PE should also work on other Linux distributions.
 
 ## Requirements
-Seafile PE requires a minimum of 2 cores and 2GB RAM. If Elasticsearch is installed on the same server, the minimum requirements are 4 cores and 4 GB RAM.
+Seafile PE requires a minimum of 2 cores and 2GB RAM. If Elasticsearch is installed on the same server, the minimum requirements are 4 cores and 4 GB RAM, and make sure the [mmapfs counts](https://www.elastic.co/guide/en/elasticsearch/reference/current/index-modules-store.html#mmapfs) do not cause excptions like out of memory, which can be increased by following command (see <https://www.elastic.co/guide/en/elasticsearch/reference/current/vm-max-map-count.html> for futher details):
+
+```shell
+sysctl -w vm.max_map_count=262144 #run as root
+```
+
+or modify **/etc/sysctl.conf** and reboot to set this value permanently:
+
+```shell
+nano /etc/sysctl.conf
+
+# modify vm.max_map_count
+vm.max_map_count=262144
+```
 
 Seafile PE can be used without a paid license with up to three users. Licenses for more user can be purchased in the [Seafile Customer Center](https://customer.seafile.com) or contact Seafile Sales at [email protected] or one of [our partners](https://www.seafile.com/en/partner/).