How to compare two Items and Trigger on second missmatch

[grenzlaeufer]

Hallo!

I have a new Zabbix administration task, which is a nice riddle. Google didn´t help out. I want to compare string items and trigger, when the comparison fails the -second- time.

A simple solution which works but triggers the first time looks like this:

{host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}

I know how to work with the count() function on one item. But how do I use it in a comparison?

I saw that I can put the expressions in brackets

({host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()})

But when I add the count() function...

{({host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}).count(2#,1,eq}=2

... I get "Incorrect trigger expression".

Has anyone an idea how to implement this test?

[batchenr]

Hallo!

I have a new Zabbix administration task, which is a nice riddle. Google didn´t help out. I want to compare string items and trigger, when the comparison fails the -second- time.

A simple solution which works but triggers the first time looks like this:

{host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}

I know how to work with the count() function on one item. But how do I use it in a comparison?

I saw that I can put the expressions in brackets

({host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()})

But when I add the count() function...

{({host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}).count(2#,1,eq}=2

... I get "Incorrect trigger expression".

Has anyone an idea how to implement this test?

mmm maybe try with last(#2)
like this :

{host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}.last(#2)

or

{host1:itemname[{HOST.HOST}].str()}<>{host2:itemname[{HOST.HOST}].str()}.last(#2)=1

[grenzlaeufer]

Thanks for the hint! I have not worked so much with the position parameter in the past. But I have an idea of how to accomplish with it my goal.