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Load balancer: Citrix Netscaler

Load balancer: Citrix Netscaler

Discovery of Citrix Netscaler load balancers is performed by SNMP.

Warning: DO NOT switch from probes to patterns if you are already running Discovery with probes, and your CMDB is already populated. If you do so, it is possible that the pattern Discovery process does not synchronize on the same values that the probe Discovery process does. This could result in duplicate CIs in your CMDB.

Requirements and support

Important: Discovery treats hardware load balancers as network devices and attempts to discover them primarily using SNMP. If a load balancer in your system, running on a Linux host, has SNMP and SSH ports open, Discovery might classify it based on the SSH port. This classification has priority over SNMP. To ensure that Discovery properly classifies your hardware load balancers, create a Discovery behavior for load balancers that includes SNMP but not SSH. Software load balancers are treated as applications.

Virtual NetScaler load balancers are not fully supported. Discovery supports local server load balancers and GSLB.

Credentials

Configure SNMP credentials and SSH credentials.

Service Mapping uses the SSH credentials to retrieve connections not from the CMDB. Discovering connections using the SSH protocol is a failover mechanism for the SNMP-based discovery.

For both Discovery and Service Mapping, see Service Mapping commands requiring a privileged user for a list of the commands that require elevated rights to discover and map Unix-based hosts in your organization.

Classifier, pattern, and probes

Classifier Trigger probes Patterns
Netscaler Load Balancer
  • Horizontal discovery probe: launches patterns (see the Patterns column)
  • Netscaler - Network Path Information (multiprobe)
    • Netscaler - ARP Information
    • Netscaler - Route Information
  • SNMP - Netscaler - Identity
  • SNMP - Netscaler - Identity - Serial
  • SNMP - Netscaler - Identity Info
  • SNMP - Netscaler - System
  • Netscaler Load Balancer
  • Netscaler Load Balancer NS.CONF
  • Netscaler Load Balancer SSH

Data collected

The following data is collected on the Citrix Netscaler [cmdb_ci_lb_netscaler] table.
Label Field Name
Serial Number serial_number
Operational Status operational_status
The following data is collected on the Load Balancer Pool [cmdb_ci_lb_pool] table.
Label Field Name
Name name
Load Balancing Method load_balancing_method
The following data is collected on the Load Balancer Pool Member [cmdb_ci_lb_pool_member] table.
Label Field Name
Name name
IP Address ip_address
Service Port service_port
The following data is collected on the Load Balancer VLAN [cmdb_ci_lb_vlan] table.
Label Field Name
Name name
Tag tag
The following data is collected on the Load Balancer Services [cmdb_ci_lb_service] table.
Label Field Name
Name name
IP Address ip_address
Port port
Operational Status operational_status
Install Status install_status
Hit count hit_count
Note:

Discovery does not gather the load balancer interface information that is necessary to map the network path in Service Mapping. Service maps might not appear correct.

To use patterns, verify that the correct pattern is specified in the horizontal pattern probe on the classifier. See Add the Horizontal Pattern probe to a classifier for instructions.