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  • kyarovoy
    Junior Member
    • Apr 2015
    • 1

    #1

    Dynamic calculated item

    Hi guys!
    I have a simple task and I need your help.
    I have a template that monitors storage performance.
    In template I have an autodiscovery rule, that creates dynamic list of items, e.g. IOPS values for each LUN of the storage

    storage.iops[lun,0]
    storage.iops[lun,1]
    storage.iops[lun,2]
    ...

    Now I need to have one new item, that sums values of the dynamic list of items. Aggregate items are not solving my problem - grpsum works for sum of values from multiple HOSTS (not for one host).

    Thus I need to create calculated item, that sums values of autodiscovered items. By now my formula looks like: last("storage.iops[lun,0]")+last("storage.iops[lun,1]")+....

    But that's a manual approach - I always should watch for changes of the list of autodiscovered items and to change my formula accordingly.

    What I need is something like:
    SUM("storage.iops[lun,*]")

    I know, that this syntax is not correct, but really what are my options ?
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