Load balancer fields and probes

Discovery stores load balancer information in several tables.

The information in this topic pertains to discovery with probes and sensors only. If you are using patterns, such as to discover F5 Big-IP load balancers, see the relevant topic for that type of load balancer.

Note: By default, the system uses the discovered IP address of a load balancer for the CI record. This can be the management IP created for the device that is used in the Discovery schedule. For instructions on how to force Discovery to use the IP address of the load balancer's NIC rather than that of a management IP, see Control IP address selection.
Table 1. Fields on the Citrix Netscalers [cmdb_ci_lb_netscaler] table
Field label and name Probes that gather data
Serial Number [serial_number] SNMP - Netscaler - Identity - Serial
Asset tag [asset_tag] SNMP - Netscaler - Identity
Model ID [model_id] SNMP - Netscaler - Identity
Table 2. Fields on the Cisco GSS [cmdb_ci_lb_cisco_gss] table
Field label and name Probes that gather data
Serial Number [serial_number] Cisco GSS - Serial Number
Model ID [model_id] Cisco GSS - Identity
IP Address [ip_address] Cisco GSS - Network
Manufacturer [manufacturer] Cisco GSS - Identity
Table 3. Fields on the Cisco CSS [cmdb_ci_lb_cisco_css] table
Field label and name Probes that gather data
Serial Number [serial_number] SNMP - Load Balancer – Identity
Model ID [model_id]
IP Address [ip_address]
Manufacturer [manufacturer]
Table 4. Fields on the F5 BIG-IP [cmdb_ci_lb_bigip] table
Field label and name Probes that gather data
Active modules [active_modules]* SNMP - F5 BIG-IP - System
Asset tag [asset_tag]
Model ID [model_id]
Failover mode [failover_mode]*
Failover peer [failover_peer]*
Serial Number [serial_number] Cisco GSS - Serial Number
*not visible on the form by default. Customize the form to add this field.
Table 5. Fields on the Load Balancer [cmdb_ci_lb] table
Field label and name Probes that gather data
Operational status [operational_status]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
  • SNMP - Load Balancer - Identity
Name [name]
Table 6. Fields on the Load Balancer Application [cmdb_ci_lb_appl] table
Field label and name Probes that gather data
Configuration file [config_file]* Nginx - Get Configuration
Name [name]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • Nginx - Get Configuration
IP Address [ip_address]*
Most recent discovery [last_discovered]*
Version [version]
  • Apache - Version
  • HAProxy - Version
  • Nginx - Version
Table 7. Fields on the Load Balancer Interface [cmdb_ci_lb_interface] table
Field label and name Probes that gather data
Status [install_status]*
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Load Balancer [load_balancer]
Name [name]
*not visible on the form by default. Customize the form to add this field.
Table 8. Fields on the Load Balancer Pool [cmdb_ci_lb_pool] table
Field label and name Probes that gather data
Load Balancing Method [load_balance_method]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Load Balancer [load_balancer]
Most recent discovery [last_discovered]*
Name [name]
*not visible on the form by default. Customize the form to add this field.
Table 9. Fields for Load Balancer Pool Member [cmdb_ci_lb_pool_member] data
Field label and name Probes that gather data
Fully qualified domain name [fqdn]*
  • HAProxy - Get Configuration
  • Nginx - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
IP Address [ip_address]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • Nginx- Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Load balancer [load_balancer]
Most recent discovery [last_discovery]*
Name [name]
Pool [pool]*
Service Port [service_port]
*not visible on the form by default. Customize the form to add this field.
Table 10. Fields for Load Balancer Service [cmdb_ci_lb_service] data
Field label and name Probes that gather data
Input URL [input_url]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • Nginx - Get Configuration
IP Address [ip_address]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • Cisco GSS - Identity
  • HAProxy - Get Configuration
  • Nginx - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Last port [last_port]* HAProxy - Get Configuration
Load Balancer [load_balancer]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • Cisco GSS - Identity
  • HAProxy - Get Configuration
  • Nginx - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Most recent discovery [last_discovery]*
Service Port [service_port]*
*not visible on the form by default. Customize the form to add this field.
Table 11. Fields for Load Balancer VLAN [cmdb_ci_lb_vlan] data
Field label and name Probes that gather data
Load Balancer [load_balancer]
  • Apache - Get JK Module
  • Apache - Get Proxy Module
  • HAProxy - Get Configuration
  • Nginx - Get Configuration
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System
Name [name]
Tag [tag]
  • SNMP - F5 BIG-IP - System
  • SNMP - Netscaler - System

Apache web server data

Discovery also collects data on Apache web serer load balancing modules using SSH. See Apache mod_jk and mod_proxy discovery for more information on probes for Apache web server data. For information on the tables, fields, and data sources that discovery populates for Apache web servers, see Apache web server discovery.