The preferred option is to install Awesome Miner Remote Agent on the Linux system and let Awesome Miner be in full control of starting and running mining:
https://support.awesomeminer.com/support/solutions/articles/35000086210-remote-agent-for-linuxIf you don't want to run Remote Agent, you will have to manually configure the mining software you run on HiveOS to run with the monitoring API enabled. The details for how to enable it will depend on the mining software you are running. For PhoenixMiner it's enabled using "-cdmport 3333" and in Awesome Miner you configure your External Miner to connect to "192.168.0.110:3333".