Instantiating a worker host You must instantiate a worker host from the pre-deployed image that you have created. Instantiate the virtual machine image for the Cloudera worker host. Edit the /etc/cloudera-scm-agent/config.ini file and set the server_host and server_port properties to reference the Cloudera Manager server host. Configure TLS/SSL. Start the Cloudera Manager agent service: service cloudera-scm-agent start Parent topic: Creating Virtual Images of Cluster Hosts