Queue on different labels of the same metric fails

[hryamzik]

Here're my metrics:

# TYPE node_cpu_facts gauge
node_cpu_facts { fact="cores" } 8
node_cpu_facts { fact="count" } 2
node_cpu_facts { fact="threads_per_core" } 2

And I can do some maths on it with a single label:

node_cpu_facts { fact="cores" } + node_cpu_facts

This looks wired but the result is actually node_cpu_facts { fact="cores" } * 2.

And this queue simply fails:

node_cpu_facts{fact="cores"} * node_cpu_facts{fact="count"} * node_cpu_facts{fact="threads_per_core"}

I didn't find any special queue syntax for this case. The only workaround seem to be using 3 metrics instead of one labeled.

[brian-brazil]

Your labels don't match, you'd have to use on clauses here. As I indicated in #1514 you should be using 3 metrics for this as a label doesn't make sense here and makes things like this harder.

[hryamzik]

Can I ask you to show me the correct syntax if queuing in this case? I did switch to separate metrics but still a bit frustrated about this behaviour.

[brian-brazil]

In this case it's probably node_cpu_facts{fact="cores"} * on (instance) node_cpu_facts{fact="count"}

You could also expose the number of threads directly.

[hryamzik]

Thanks! Closing.

[lock]

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