trigger and item value

[Inc0]

Hello,

is there a way to show in a trigger a value of an item different from the one that triggered the trigger? (sorry for my english)

Examlpe:
Item1: A -> free disk space in Bytes
Item2: B -> free disk space in %
Trigger1: IF (B<5) THEN "Low space on {HOSTNAME}: {ITEM.VALUE}% (FreeDiskSpace MByte)"

When the free space runs below 5% I want to see in Trigger1 the % value of free disk space (Item2 can be accessed using {ITEM.VALUE}) AND the amount of space expressed in MByte or GByte (Item1).
I did some test specifying the hostname, the template name and so on but no luck.

Thx and merry Xmas

[danrog]

Try this (untested)

I was thinking about this and originally I thought hmmmm, not really but then I realized it should be possible. You would have to have two checks in the trigger.

Description: low diskspace on /var ({ITEM.LASTVALUE1} {ITEM.LASTVALUE2})
In your example
Item.lastvalue1 = B
Item.lastvalue2 = A

Trigger would have to be setup like this:
(B<5)|(A<100)

This reads as follows:
If currrent % is less then 5% OR bytes less than 100 trigger. So really the second half is only so you can include the bytes value in the trigger description.


I haven't tested but based on the docs and experience this should work


Merry/Happy Christmas!!!!

[zalex_ua]

Hello,
is there a way to show in a trigger a value of an item different from the one that triggered the trigger? (sorry for my english)

Examlpe:
Item1: A -> free disk space in Bytes
Item2: B -> free disk space in %
Trigger1: IF (B<5) THEN "Low space on {HOSTNAME}: {ITEM.VALUE}% (FreeDiskSpace MByte)"

It should work. I have working macro {ITEM.VALUE} in the trigger Name.

I You would have to have two checks in the trigger.

Description: low diskspace on /var ({ITEM.LASTVALUE1} {ITEM.LASTVALUE2})

{ITEM.LASTVALUE} - is not right macro for this purposes.

{ITEM.VALUE} - is right macro !

Historical (when event happened) value of Nth item of the trigger expression if used for displaying events

[danrog]

Hmmm both are listed as supported in trigger descriptions and both support displaying the Nth trigger expression used. I think they will also display the same data as the item table only contains the last value received from the host. So {item.lastvalueN} will work.

{ITEM.LASTVALUE<1-9>} X X The latest value of the Nth item of the trigger expression which caused a notification. Supported from Zabbix 1.4.3. It is alias to {{HOSTNAME}:{TRIGGER.KEY}.last(0)

[zalex_ua]

IHmmm both are listed as supported in trigger descriptions and both support displaying the Nth trigger expression used

yes, but ->

I think they will also display the same data as the item table only contains the last value received from the host.

No !
{ITEM.VALUE<1-9>} - return Historical (when event happened) value of ...
{ITEM.LASTVALUE<1-9>} - return latest value of the ...

This is ROOT difference !

For the first request by Inc0 - the right macro is {ITEM.VALUE<1-9>} instead of {ITEM.LASTVALUE<1-9>}.
It will provide the correct viewing names in Monitoring -> Events GUI menu.


See some my pictures at https://support.zabbix.com/browse/ZBX-2808 and i hope you will understand

[Inc0]

First of all, thank you for your support and merry Christmas

I tested your suggestions and the macro {ITEM.VALUE<1-9>} works fine showing the % of free space space but I still can't see the value (MB/GB) of free space next to the %

Here is the trigger (latest and NOT working version) I created for a template called MyTemplate:
NAME: Low free disk space on {HOSTNAME} volume /: {ITEM.VALUE}% free ({{IPADDRESS}:{vfs.fs.size[/,free]}.last(0)})
EXPRESSION: {MyTemplate:vfs.fs.size[/,pfree].last(0)}>5 & {MyTemplate:vfs.fs.size[/,pfree].last(0)}<10
New dependency: NONE
Event generation: Normal
Severity: Warning

Example
hostname: foobar (Obviously foobar has MyTemplate linked)
free disk space (in %) in /: 8%
free disk space (GB) in /: 2GB

The trigger in personal dashboard is shown as:
Low free disk space on foobar volume /: 8% free ({{IPADDRESS}:{vfs.fs.size[/,free]}.last(0)})

instead of

Low free disk space on foobar volume /: 8% free (2GB)


What am I doing wrong?

[zalex_ua]

The trigger in personal dashboard is shown as:
Low free disk space on foobar volume /: 8% free ({{IPADDRESS}:{vfs.fs.size[/,free]}.last(0)})

instead of

Low free disk space on foobar volume /: 8% free (2GB)


What am I doing wrong?

Try trigger name:
NAME: Low free disk space on {HOSTNAME} volume /: {ITEM.VALUE}% free ({ITEM.VALUE2})

Using direct function is it not right way, the same as it not right to using the macro {ITEM.LASTVALUE}.

What is it {IPADDRESS} - is it not right!
{HOSTNAME<1-9>} - is right !
and I'm not sure that combination {{IPADDRESS}:{vfs.fs.size[/,free]}.last(0)} should works at all.

[Inc0]

Try trigger name:
NAME: Low free disk space on {HOSTNAME} volume /: {ITEM.VALUE}% free ({ITEM.VALUE2})

Using direct function is it not right way, the same as it not right to using the macro {ITEM.LASTVALUE}.

I'm not using {ITEM.LASTVALUE}
Changing the trigger according to your suggestion shows a value equal to the % value: the new trigger
NAME: Low free disk space on {HOSTNAME} volume /: {ITEM.VALUE}% free ({ITEM.VALUE2})

shows

Low free disk space on foobar volume /: 8% free (8)

What is it {IPADDRESS} - is it not right!
{HOSTNAME<1-9>} - is right !
and I'm not sure that combination {{IPADDRESS}:{vfs.fs.size[/,free]}.last(0)} should works at all.

Yes and no: using {IPADDRESS} is WRONG (so yes: you are right) but no, using {{HOSTNAME}:{vfs.fs.size[/,free]}.last(0)}
the trigger shows

Low free disk space on foobar volume /: 8% free ({foobar:{vfs.fs.size[/,free]}.last(0)})

[zalex_ua]

NAME: Low free disk space on {HOSTNAME} volume /: {ITEM.VALUE}% free ({ITEM.VALUE2})

shows

Low free disk space on foobar volume /: 8% free (8)

hmmm. i'll check in my environment.

[Inc0]

hmmm. i'll check in my environment.

I've forgot to mention "an important" thing: I'm running zabbix 1.8.3 (compiled by myself).

[zalex_ua]

EXPRESSION: {MyTemplate:vfs.fs.size[/,pfree].last(0)}>5 & {MyTemplate:vfs.fs.size[/,pfree].last(0)}<10

What am I doing wrong?

Hey you use the same Item in 2nd position.
{MyTemplate:vfs.fs.size[/,pfree].last(0)}>5 & {MyTemplate:vfs.fs.size[/,pfree].last(0)}<10

This is you mistake!

In my environment all works fine.
Name:
Low free disk space on {HOSTNAME} volume /DB: {ITEM.VALUE}% free ({ITEM.VALUE2})
Expression:
{Zabbix_Server:vfs.fs.size[/DB,pfree].last(0)}<70 & {Zabbix_Server:vfs.fs.size[/DB,free].last(0)}>1000
Result:
Low free disk space on Zabbix_Server volume /DB: 57.2032% free (2186862592)

[Inc0]

...and of course it was a stupid mistake
It's working fine now, thank you again

Inc0

[Starko]

Thank you very much. This works very well.
I modified the Linux and Windows Template Trigger prototypes according to your suggestions.

Windows

Free disk space is less than 5% on volume {#FSNAME} ({ITEM.VALUE2})
{Template OS Windows:vfs.fs.size[{#FSNAME},pfree].last(0)}<5 & {Template OS Windows:vfs.fs.size[{#FSNAME},free].last(0)}>1

Linux

Free disk space is less than 5% on volume {#FSNAME} ({ITEM.VALUE2})
{Template OS Linux:vfs.fs.size[{#FSNAME},pfree].last(0)}<5 & {Template OS Linux:vfs.fs.size[{#FSNAME},free].last(0)}>1

Sample Trigger Message:

Free disk space is less than 5% on volume E: (629.81 MB)