Expose same metric name and different label within one time

[weiji...@gmail.com]

hi,

I'm newbie of prometheus and I want to is there any way to implement below?

Currently, I want to expose 2 metric with same name but different labels at one time, which look like below:

# HELP system_test_count help description
# TYPE system_test_count gauge
system_test_count{label="test1",} 1.0

............

# HELP system_test_count help description
# TYPE system_test_count gauge
system_test_count{label="test2",} 1.0

But from prometheus targets page, I got below errors:

text format parsing error in line xx: second HELP line for metric name "system_test_count"
May I ask is there any approach to implement this?
And I don't want to add some other extra info into the metric name(e.g. system_test_A_count & system_test_B_count)

Thanks
Nick

[Nicholas Capo]

You are only allowed to have one `HELP` line per metric name.

So instead of:

> # HELP system_test_count help description

> # TYPE system_test_count gauge

> system_test_count{label="test1",} 1.0

> ... 

> # HELP system_test_count help description

> # TYPE system_test_count gauge

> system_test_count{label="test2",} 1.0

Change it to :

> # HELP system_test_count help description

> # TYPE system_test_count gauge

> system_test_count{label="test1",} 1.0

> ...

> system_test_count{label="test2",} 1.0

I would recommend using a client library [0] to avoid problems like this.

Nicholas

[0] https://prometheus.io/docs/instrumenting/clientlibs/

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