Legend format in grafana

[Yosef Yudilevich]

hi ,

to put label in Legend format section in grafana, i do {{ label }}

may i add metric there?

i would like to present memory in MB, and in legent write something like:

 free memory of totoal (node_memory_MemTotal{{instance ="$XXX"}}

where XXX is a variable form dropdown list

so there will be one almost not useful line on the graph

could be useful for swap, memory, fs size, and much more i think

thanks

thanks

[Julius Volz]

The metric name is also just a special "__name__" label internally. So {{__name__}} should work.

Note that Prometheus removes the metric name in a query result when you apply any transformations to the time series in your query (like avg/sum/..., computing the rate, or most other functions) as the result is not that same metric anymore.

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[Yosef Yudilevich]

that is good to know thanks also useful (was looking for it) but i wanted to put a value of the metric there

so legend for free memory will say:

free memory of total 16GB

and on the graph i see the “free memory value" cause total i don’t need on the graph

as it almost never changes and creates just visual noise

so i wold need something like:

free memory of totoal (node_memory_MemTotal{{instance ="$XXX”}}

thanks

[Yosef Yudilevich]

here we go

add variable in templating like that:

query_result(node_memory_MemTotal{instance=~"$test3"} / 1024 / 1024 / 1024)

than we may use now

and in regex field:

/^.* ([0-9|\.]{5})[0-9].* [0-9|*]*$/

then we may use this var in Legend Format

like that $var

WITHOUT courly braces

thanks

[Yosef Yudilevich]

not working with multiple hosts...

any advice?

thanks

[Tobias Schmidt]

I don't really understand what you're trying to do here, but you should ask questions about Grafana on the Grafana mailing list / github repository instead.

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[Yosef Yudilevich]

ok thanks

askes at grafana github

PS

i mean , when i am measuring something "free", i want to know "free" of what "total"

thats all

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