Symptoms

BIG-IQ might not properly display the status of Virtual Servers, Pools, Pools Members and Nodes configured on managed BIG-IP devices running versions 15.x and 16.x that have DNS configured. When this happens, BIG-IQ logs an the following in the /var/log/appiq/agentmanager.log: java.lang.ArrayIndexOutOfBoundsException: 1

Impact

BIG-IQ doesn't properly display the status of LTM objects on the application dashboards for DNS application services on the Applications > APPLICATIONS screen.

Conditions

Managing BIG-IP devices running v15.X and 16.x that has one or more Wide-IP configured to the DNS(GTM) configuration with LTM status updates from DCDs enabled on BIG-IQ. restcurl -X PUT /cm/adc-core/current-config/stats-refresh -d ' { "isMonitorRunning": true, "useAppIqDcd": true, "pollingIntervalSeconds": 300 }'

Workaround

Use one of the following workarounds to fix this issue. 1. Disable the LTM status collection from the DCD and allow status to be collected directly by BIG-IQ. This option might increase the CPU usage, see article K91114310 titled: Reducing the performance impact of BIG-IQ statistics gathering on managed BIG-IP systems at support.f5.com/csp/article/K91114310. 2. Update the analytics iApp RPM. For more information, see article K53001642 titled: Updating the BIG-IQ iApp to prevent BIG-IP performance issues on managed BIG-IP systems and improve DNS statistics collection at https://support.f5.com/csp/article/K53001642

Fix Information

The iApp script installed by the BIG-IQ on managed BIG-IP devices now allows the system to display objects as expected.

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips