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To run Ant Media Server in DB Based Clustering please follow these steps.

• Install MongoDB into a server. You can look at here.

• Set bind_ip value as 0.0.0.0 in /etc/mongod.conf file to let all connections to the MongoDB.

• Restart Mongodb and make sure that you can connect to the MongoDB with something like mongo

  sudo service mongod restart

• Make Mongodb start at boot

  sudo systemctl enable mongod.service

• Install Ant Media Server one or more server. You can look at here.
• Download the change_server_mode.sh shell script.

wget https://raw.githubusercontent.com/ant-media/Scripts/master/change_server_mode.sh
chmod 755 change_server_mode.sh

• Run the command to restart Ant Media Server in DB based cluster mode.

sudo ./change_server_mode.sh cluster <MONGO_SERVER_IP>

• Additionally, Do not forget to open 5000 TCP port for all nodes in order to nodes found each other

Note: run the command to exit from cluster mode and restart Ant Media Server in standalone mode.

sudo ./change_server_mode.sh standalone

• As new Ant Media Server instances started in DB Based Cluster mode, they are automatically added to the cluster. You can check nodes from Management Console.

http://<ANT_MEDIA_SERVER_NODE_k_IP>:5080/#/cluster.

• In this mode there are no multicast messages.
• Newly started instance register it to the MongoDB.
• When an instance starts to receive live stream, it register itself as origin of the stream.
• When the load balancer forwards a play request to any of the instances in the cluster, instance get the origin from MondoDB. It fetches live stream from the origin and send to audience.