For machines that do not use firewalld, the *zabbix-agent* role will now skip attempting to open the Zabbix agent port using the `firewalld` module. The `host_uses_firewalld` variable controls this behavior.
For machines that do not use firewalld, the *zabbix-agent* role will now skip attempting to open the Zabbix agent port using the `firewalld` module. The `host_uses_firewalld` variable controls this behavior.