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Troubleshoot Pooled capacity license issues

January 8, 2024
Contributed by: 
C

This section describes how to analyze and troubleshoot common Pooled capacity issues.

Check license status

The NetScaler Console acts as a licensing server for your NetScaler Pooled capacity license. You can use the NetScaler Console GUI to check the status of the license. Navigate to Infrastructure > Pooled Licensing > Pooled Capacity > License Usage.

Understand license status

The following table lists the types of license status and what they mean

Status What it means
Allocated The license state is fine.
Allocated: not applied on NetScaler NetScaler might require reboot if license is checked-out or checked-in from NetScaler, but NetScaler hasn’t rebooted yet.
Not allocated License is not allocated in the NetScaler instance.
Grace NetScaler instance is in the license grace period for 30 days
Sync in progress NetScaler Console fetches information from NetScaler in a 2-minute intervals. Synchronizing licenses between NetScaler Console and NetScaler might take as long as 15 minutes. NetScaler Console might have rebooted or NetScaler Console HAS failover is triggered.
Partially allocated NetScaler cannot accept the capacity allocated because it might be running at its maximum allocation. For example, NetScaler is running with 10 Gbps license pool capacity. When NetScaler reboots, the 10 Gbps is checked-in back to NetScaler Console license server. When NetScaler comes back online, it tries to check out the earlier allocated 10 Gbps automatically. Meanwhile, other NetScaler instances might have checked out that bandwidth. Partially Allocated appears if the license pool does not have enough capacity to allocate complete 10 Gbps or even partial capacity to this NetScaler.
Not managed NetScaler is not added to NetScaler Console for manageability. This does not have impact on NetScaler licensing, but it can impact license monitoring from NetScaler Console.
Not managed NetScaler is not added to NetScaler Console for manageability. This does not have impact on NetScaler licensing, but it can impact license monitoring from NetScaler Console.
Connection lost NetScaler is not reachable from NetScaler Console for manageability. For example, there are network connectivity issues, NITRO is not working, or NetScaler password mismatches. If NITRO is not working or NetScaler password mismatches, this does not have an impact on NetScaler licensing. However, it can impact license monitoring from NetScaler Console.

Check server status

This section describes the common server status issues and possible reasons and fixes.

Issue: NetScaler displays the license server as unreachable and license status changes to grace.

  • Connection to license server (NetScaler Console or agent) has severed for more than 15 minutes. Verify if the license server is up and reachable.

  • NetScaler is in grace mode.

Issue: NetScaler displays license server status as reachable but user attempt to change allocation has no effect. Clicking Change Allocation returns 0 0. This value might make it appear the configured capacity has been lost.

  • Connection to the license server has recently gone down but the NetScaler still hasn’t missed the second heartbeat. Therefore, it is not in Grace (yet). Verify if the license server is up and reachable.

Issue: NetScaler displays capacity and instance counts but the license server is Reachable/Unreachable. Clicking Change Allocation returns some numbers but does not account for configured capacity.

  • Connection to license server got restored but the NetScaler is still to miss the second heartbeat or send the reconnect probe.

Issue: NetScaler says Cannot connect to license server when configuring Pooled licensing with NetScaler Console

  • Check firewall rules to ensure that ports 27000 and 7279 are open.
  • The agent is not registered. For more information, see Getting Started.
  • NetScaler Console does not have license files uploaded. For more information, see Configure NetScaler Pooled capacity
  • NetScaler Console has the wrong license file.

Check usage report of license

Under NetScaler Licensing > Pooled Licensing > Bandwidth Licenses > Pooled Capacity > License Usage in the NetScaler Console GUI, you can see the monthly peak of your license usage. You can use this report to increase your license usage or plan the purchase of an extra license.

The following are some details how the report is generated and can be used.

Polling: License data is polled from the NetScaler instances every 15 minutes.

Maintaining peaks per hour: NetScaler Console maintains only maximum license usage in an hour, per device.

Reporting: You can generate a GUI report for each instance, for a specific time range.

Exporting: You can export reports either as in CSV format or XLS format.

Purging: NetScaler Console purges data on the first of every month at 12:10 a.m. The purge period is configurable (the default period is two months).

Counters and statistics for Pooled capacity licensing

The following counters, logs, and commands expose the NetScaler Pooled licensing metrics that indicate the behavior of both NetScaler Console and NetScaler instances in Pooled licensing mode.

  • SNMP traps: available from NetScaler version 13.xx.
  • NSCONMSG counters for rate limiting: available from NetScaler version 12.1 57.xx.
  • NetScaler Console counters NetScaler Console Command Actions are available in NetScaler Cloud service.

SNMP traps

You can configure the following SNMP traps v.13 Pooled license alarms

  • POOLED-LICENSE-CHECKOUT-FAILURE
  • POOLED-LICENSE-ONGRACE
  • Configure POOLED-LICENSE-PARTIAL

For more information about these alarms, see NetScaler SNMP OID Reference.

NSCONMSG Counter

Check the following NCCONMSG counters and what they mean:

  • allnic_err_rl_cpu_pkt_drops: aggregate (all NICs) packet drops after CPU limit was reached
  • allnic_err_rl_pps_pkt_drops: aggregate packet drops system wide after pps limit
  • allnic_err_rl_rate_pkt_drops: aggregate rate drops system wide
  • allnic_err_rl_pkt_drops: cumulative rate limiting drops due to rate, pps, and CPU
  • rl_tot_ssl_rl_enforced: number of times SSL RL was applied (on new SSL connections)
  • rl_tot_ssl_rl_data_limited: number of times the SSL throughput limit was reached
  • rl_tot_ssl_rl_sess_limited: number of times the SSL TPS limit was reached

NetScaler Console counters

When you choose the Run Command Action event action, you can create a command or a script that can be run on NetScaler Console for events matching a particular filter criterion. You can also set the following parameters for the Run Command Action script:

Parameter Description
$source This parameter corresponds to the source IP address of the received event.
$category This parameter corresponds to the type of traps defined under the category of the filter.
$entity This parameter corresponds to the entity instances or counters for which an event has been generated. It can include the counter names for all threshold-related events, entity names for all entity-related events, and certificate names for all certificate-related events.
$severity This parameter corresponds to the severity of the event.
$failureobj The failure object affects the way that an event is processed and ensures that the failure object reflects the exact problem as notified. This parameter can be used to track down problems quickly and to identify the reason for failure, instead of simply reporting raw events.

Note

During command execution, these parameters are replaced with actual values.

Troubleshoot Pooled capacity license issues
January 8, 2024
Contributed by: 
C
January 8, 2024
Contributed by: 
C

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