Spin up second Zabbix agent process on same host

# cat /tmp/second.zabbix.agent.conf
Hostname=LogFileTestHost
LogType=console
PidFile=/tmp/second.zabbix.agent.pid
Server=127.0.0.1
ServerActive=<address of zabbix proxy>
StartAgents=0

Launch agent in foregoround mode:

zabbix_agentd -c /tmp/second.zabbix.agent.conf -f