Description of problem:
A MiqAeServiceHostRedhat object has four virtual columns:

  enabled_tcp_inbound_ports
  enabled_tcp_outbound_ports
  enabled_udp_inbound_ports
  enabled_udp_outbound_ports

however when any of these is accessed an exception is raised:

<NoMethodError>: <undefined method `find_all_by_enabled_and_protocol_and_direction' for [
]:ActiveRecord::Relation>

Each of these methods calls self.get_ports, which contains the code:

  def get_ports(*args)
    return [] if self.operating_system.nil?
    if args.length == 3
      rules = self.operating_system.firewall_rules.find_all_by_enabled_and_protocol_and_direction(*args)

...however the firewall_rules table doesn't seem to have a 'protocol' column:

vmdb_production=# \d firewall_rules
                                            Table "public.firewall_rules"
          Column          |            Type             |                          Modifiers
--------------------------+-----------------------------+-------------------------------------------------------------
 id                       | bigint                      | not null default nextval('firewall_rules_id_seq'::regclass)
 name                     | character varying(255)      |
 display_name             | character varying(255)      |
 group                    | character varying(255)      |
 enabled                  | boolean                     |
 required                 | boolean                     |
 host_protocol            | character varying(255)      |
 direction                | character varying(255)      |
 port                     | integer                     |
 end_port                 | integer                     |
 created_on               | timestamp without time zone |
 updated_on               | timestamp without time zone |
 resource_id              | bigint                      |
 resource_type            | character varying(255)      |
 source_security_group_id | bigint                      |
 source_ip_range          | character varying(255)      |
 ems_ref                  | character varying(255)      |
 network_protocol         | character varying(255)      |
Indexes:
    "firewall_rules_pkey" PRIMARY KEY, btree (id)
    "index_firewall_rules_on_resource_id_and_resource_type" btree (resource_id, resource_type)


Version-Release number of selected component (if applicable):
5.3.3

How reproducible:
Every time

Additional info: