active check is not supported.

[shdcs]

We have a problem that our items with userparameters sporadic set to unsupported. We have the problem with all userparameter items with active checks. After a few time the item became back supportet and working.

What are the next steps i can do to debug this issue. At the moment i have only this line as example in our agent logs.

15241:20141119:122332.075 active check "rabbitmq.queuesize[ImportQueue]" is not supported

Zabbix Agent Version is
Zabbix agent v2.2.2 (revision 42525) (12 February 2014).

[ArtemK]

you probably check it via some script? Try to tune timeout parameter, maybe you script is running too long and item becomes not supported? You can also increase debug level on zabbix agent and check logs.

[shdcs]

you probably check it via some script? Try to tune timeout parameter, maybe you script is running too long and item becomes not supported? You can also increase debug level on zabbix agent and check logs.

debug output from zabbix-agent log file.

In process_value() key:':rabbitmq.queuesize[DocumentQueue1]' value:'ZBX_NOTSUPPORTED'
zabbix_agentd.log.2.gz: 7918:20141124:101228.003 active check "rabbitmq.queuesize[DocumentQueue1]" is not supported
zabbix_agentd.log.2.gz: "value":"ZBX_NOTSUPPORTED",

Changed the Command to a script. Write down the runtime from the Script. Runtime is less then 2 seconds.
Change the script to return a supported value in a case of failure. (return "-1" when the grep failed)

Both don't help to fix the flapping check.