diff --git a/manual/docker/cluster/deploy_seafile_cluster_with_docker.md b/manual/docker/cluster/deploy_seafile_cluster_with_docker.md
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+# Seafile Docker Cluster Deployment
+
+## Environment
+
+System: Ubuntu 20.04
+
+docker-compose: 1.25.0
+
+Seafile Server: 2 frontend nodes, 1 backend node
+
+## Deployment preparation
+
+Install docker-compose on each node
+
+```
+$ apt update && apt install docker-compose -y
+
+```
+
+Create the three databases ccnet_db, seafile_db, and seahub_db required by Seafile on MariaDB/MySQL, and authorize the \`seafile\` user to be able to access these three databases:
+
+```
+$ mysql -h{your mysql host} -u[username] -p[password]
+
+mysql>
+create user 'seafile'@'%' identified by 'PASSWORD';
+
+create database `ccnet_db` character set = 'utf8';
+create database `seafile_db` character set = 'utf8';
+create database `seahub_db` character set = 'utf8';
+
+GRANT ALL PRIVILEGES ON `ccnet_db`.* to 'seafile'@'%';
+GRANT ALL PRIVILEGES ON `seafile_db`.* to 'seafile'@'%';
+GRANT ALL PRIVILEGES ON `seahub_db`.* to 'seafile'@'%';
+
+```
+
+You also need to create a table in \`seahub_db\`
+
+```
+mysql>
+use seahub_db;
+CREATE TABLE `avatar_uploaded` (
+  `filename` text NOT NULL,
+  `filename_md5` char(32) NOT NULL,
+  `data` mediumtext NOT NULL,
+  `size` int(11) NOT NULL,
+  `mtime` datetime NOT NULL,
+  PRIMARY KEY (`filename_md5`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+
+```
+
+## Deploy Seafile service
+
+### Deploy seafile frontend nodes
+
+Install docker-compose on the backend node
+
+```
+$ apt update && apt install docker-compose -y
+
+```
+
+Create the mount directory
+
+```
+$ mkdir -p /opt/seafile/shared
+
+```
+
+Create the docker-compose.yml file
+
+```
+$ cd /opt/seafile
+$ vim docker-compose.yml
+
+```
+
+```
+version: '2.0'
+services:
+  seafile:
+    image: docker.seafile.top/seafileltd/seafile-pro-mc:9.0.2
+    container_name: seafile
+    ports:
+      - 80:80
+    volumes:
+      - /opt/seafile/shared:/shared
+    environment:
+      - CLUSTER_SERVER=true
+      - CLUSTER_MODE=frontend
+      - TIME_ZONE=Asia/Shanghai  # Optional, default is UTC. Should be uncomment and set to your local time zone.
+
+```
+
+**Note**: **CLUSTER_SERVER=true** means seafile cluster mode, **CLUSTER_MODE=frontend** means this node is seafile frontend server.
+
+Start the seafile docker container
+
+```
+$ cd /opt/seafile
+$ docker-compose up -d
+
+```
+
+#### Initial configuration files
+
+1\. Manually generate configuration files
+
+```
+$ docker exec -it seafile bash
+
+# cd /scripts  && ./cluster_conf_init.py
+# cd /opt/seafile/conf 
+
+```
+
+2\. Modify the mysql configuration options (user, host, password) in configuration files such as ccnet.conf, seafevents.conf, seafile.conf and seahub_settings.py.
+
+3\. Modify the memcached configuration option in seahub_settings.py
+
+```
+CACHES = {
+    'default': {
+        'BACKEND': 'django_pylibmc.memcached.PyLibMCCache',
+        'LOCATION': 'memcached:11211',
+    },
+...
+}
+                         |
+                         v
+
+CACHES = {
+    'default': {
+        'BACKEND': 'django_pylibmc.memcached.PyLibMCCache',
+        'LOCATION': '{you memcached server host}:11211',
+    },
+...
+}
+
+```
+
+4\. Modify the \[INDEX FILES] configuration options in seafevents.conf
+
+```
+[INDEX FILES]
+es_port = {your elasticsearch server port}
+es_host = {your elasticsearch server host}
+external_es_server = true
+enabled = true
+interval = 10m
+...
+
+```
+
+5\. Add some configurations in seahub_settings.py
+
+```python
+SERVICE_URL = 'http{s}://{your server IP or sitename}/'
+FILE_SERVER_ROOT = 'http{s}://{your server IP or sitename}/seafhttp'
+AVATAR_FILE_STORAGE = 'seahub.base.database_storage.DatabaseStorage'
+
+```
+
+6\. Add cluster special configuration in seafile.conf
+
+```
+[cluster]
+enabled = true
+memcached_options = --SERVER={your memcached server host} --POOL-MIN=10 --POOL-MAX=100
+
+```
+
+#### Import the tables of seahub_db, seafile_db and ccnet_db
+
+Enter the container, and then execute the following commands to import tables
+
+```
+$ docker exec -it seafile bash
+
+# mysql -h{your mysql host} -u[username] -p[password]  ccnet_db < /opt/seafile/seafile-server-latest/sql/mysql/ccnet.sql
+# mysql -h{your mysql host} -u[username] -p[password]  seafile_db < /opt/seafile/seafile-server-latest/sql/mysql/seafile.sql
+# mysql -h{your mysql host} -u[username] -p[password]  seahub_db <  /opt/seafile/seafile-server-laster/seahub/sql/mysql.sql
+
+```
+
+Start Seafile service
+
+```
+$ docker exec -it seafile bash
+
+# cd /opt/seafile/seafile-server-latest
+# ./seafile.sh start && ./seahub.sh start
+
+```
+
+When you start it for the first time, seafile will guide you to set up an admin user.
+
+When deploying the second frontend node, you can directly copy all the directories generated by the first frontend node, including the docker-compose.yml file and modified configuration files, and then start the seafile docker container.
+
+### Deploy seafile backend node
+
+Create the mount directory
+
+```
+$ mkdir -p /opt/seafile/shared
+
+```
+
+Create the docker-compose.yml file
+
+```
+$ cd /opt/seafile
+$ vim docker-compose.yml
+
+```
+
+```
+version: '2.0'
+services:
+  seafile:
+    image: docker.seafile.top/seafileltd/seafile-pro-mc:9.0.2
+    container_name: seafile
+    ports:
+      - 80:80
+    volumes:
+      - /opt/seafile/shared:/shared      
+    environment:
+      - CLUSTER_SERVER=true
+      - CLUSTER_MODE=backend
+      - TIME_ZONE=Asia/Shanghai  # Optional, default is UTC. Should be uncomment and set to your local time zone.
+
+```
+
+**Note**: **CLUSTER_SERVER=true** means seafile cluster mode, **CLUSTER_MODE=backend** means this node is seafile backend server.
+
+Start the seafile docker container
+
+```
+$ cd /opt/seafile
+$ docker-compose up -d
+
+```
+
+Copy configuration files of the frontend node, and then start Seafile server of the backend node
+
+```
+$ docker exec -it seafile bash
+
+# cd /opt/seafile/seafile-server-latest
+# ./seafile.sh start && ./seafile-background-tasks.sh start
+
+```
+
+### Use S3 as backend storage
+
+Modify the seafile.conf file on each node to configure S3 storage.
+
+vim seafile.conf
+
+```
+[commit_object_backend]
+name = s3
+bucket = {your-commit-objects}  # The bucket name can only use lowercase letters, numbers, and dashes
+key_id = {your-key-id}
+key = {your-secret-key}
+use_v4_signature = true
+aws_region = eu-central-1  # eu-central-1 for Frankfurt region
+
+[fs_object_backend]
+name = s3
+bucket = {your-fs-objects}
+key_id = {your-key-id}
+key = {your-secret-key}
+use_v4_signature = true
+aws_region = eu-central-1
+
+[block_backend]
+name = s3
+bucket = {your-block-objects}
+key_id = {your-key-id}
+key = {your-secret-key}
+use_v4_signature = true
+aws_region = eu-central-1
+
+```
+
+### Deployment load balance
+
+#### Install HAproxy and Keepalived services
+
+Execute the following commands on the two Seafile frontend servers:
+
+```
+$ apt install haproxy keepalived -y
+
+$ mv /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg.bak
+
+$ cat > /etc/haproxy/haproxy.cfg << 'EOF'
+global
+    log 127.0.0.1 local1 notice
+    maxconn 4096
+    user haproxy
+    group haproxy
+
+defaults
+    log global
+    mode http
+    retries 3
+    timeout connect 10000
+    timeout client 300000
+    timeout server 300000
+
+listen seafile 0.0.0.0:80
+    mode http
+    option httplog
+    option dontlognull
+    option forwardfor
+    cookie SERVERID insert indirect nocache
+    server seafile01 Front-End01-IP:8001 check port 11001 cookie seafile01
+    server seafile02 Front-End02-IP:8001 check port 11001 cookie seafile02
+EOF
+
+```
+
+**Note**: Correctly modify the IP address (Front-End01-IP and Front-End02-IP) of the frontend server in the above configuration file.
+
+**Choose one of the above two servers as the master node, and the other as the slave node.**
+
+Perform the following operations on the master node:
+
+```bash
+$ cat > /etc/keepalived/keepalived.conf << 'EOF'
+! Configuration File for keepalived
+
+global_defs {
+    notification_email {
+        root@localhost
+    }
+    notification_email_from keepalived@localhost
+    smtp_server 127.0.0.1
+    smtp_connect_timeout 30
+    router_id node1
+    vrrp_mcast_group4 224.0.100.18
+}
+
+vrrp_instance VI_1 {
+    state MASTER
+    interface eno1   # Set to the device name of a valid network interface on the current server, and the virtual IP will be bound to the network interface
+    virtual_router_id 50
+    priority 100
+    advert_int 1
+    authentication {
+        auth_type PASS
+        auth_pass seafile123
+    }
+    virtual_ipaddress {
+        172.26.154.45/24 dev eno1  # Configure to the correct virtual IP and network interface device name
+    }
+}
+EOF
+
+```
+
+**Note: **Correctly configure the virtual IP address and network interface device name in the above file.
+
+Perform the following operations on the standby node:
+
+```bash
+$ cat > /etc/keepalived/keepalived.conf << 'EOF'
+! Configuration File for keepalived
+
+global_defs {
+    notification_email {
+        root@localhost
+    }
+    notification_email_from keepalived@localhost
+    smtp_server 127.0.0.1
+    smtp_connect_timeout 30
+    router_id node2
+    vrrp_mcast_group4 224.0.100.18
+}
+
+vrrp_instance VI_1 {
+    state BACKUP
+    interface eno1   # Set to the device name of a valid network interface on the current server, and the virtual IP will be bound to the network interface
+    virtual_router_id 50
+    priority 98
+    advert_int 1
+    authentication {
+        auth_type PASS
+        auth_pass seafile123
+    }
+    virtual_ipaddress {
+        172.26.154.45/24 dev eno1   # Configure to the correct virtual IP and network interface device name
+    }
+}
+EOF
+
+```
+
+Finally, run the following commands on the two Seafile frontend servers to start the corresponding services:
+
+```
+$ systemctl enable --now haproxy
+$ systemctl enable --now keepalived
+
+```
+
+So far, Seafile cluster has been deployed.
diff --git a/mkdocs.yml b/mkdocs.yml
index 8ea8764a..9a7ffadd 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -121,6 +121,7 @@ nav:
   - Seafile Setup with Docker:
     - Seafile Community Installation: docker/deploy_seafile_with_docker.md
     - Seafile Professional Installation: docker/pro-edition/deploy_seafile_pro_with_docker.md
+    - Seafile Docker Cluster Deployment: docker/cluster/deploy_seafile_cluster_with_docker.md
     - Migration from Seafile Community: docker/pro-edition/migrate_ce_to_pro_with_docker.md
     - Migrate from non-docker deployment: docker/non_docker_to_docker.md
     - Upgrade from 6.3 to 7.0: