Item pre-processing does not work

[vikaskedia]

Item key is:

system.run[cat /sys/block/sda/queue/rotational]






Item pre-processing is

^.*1.*$ -> HDD







Dashboard shows 1 and not HDD




Why?

[Atsushi]

Regular expressions do not replace specific strings if they match the conditions of regular expressions.
Just use a regular expression to retrieve a string that matches that regular expression from the original string.

ex.
Original String:

US:1000

Regular expression Parameter:

US:([0-9]+)    \1

Result:

1000

https://www.zabbix.com/documentation/3.4/manual/config/items/item#item_value_preprocessing

If you want to associate a specific numerical value with a specific character representation, try using the value mapping.

https://www.zabbix.com/documentation/3.4/manual/config/items/mapping

[vikaskedia]

the value mapping worked great .. thank you ..