Gerrard-YNWA commented on issue #2042:
URL: https://github.com/apache/apisix/issues/2042#issuecomment-766719348
> > we could get hostname from `vars`. but prometheus can store only numbers
as value.
>
> hi, @nic-chen
> I don’t quite understand what you said `prometheus can store only numbers
as value`
> But we can add a label named host for each metric, such as this
>
> ```lua
> -- Take metrics.status as an example
> ...
> metrics.status = prometheus:counter("http_status",
> "HTTP status codes per service in APISIX",
> {"code", "service", "node", "host"})
> ...
> metrics.status:inc(1, vars.status, service_name, balancer_ip, host_name)
> ...
> ```
Hello, any progress in this issue?
We have a similar for collecting different apisix instance's metrics in a
separate grafana panel, like `apisix_nginx_http_current_connections`.
However, metrics from the `/apisix/prometheus/metrics` outputs without any
label about instance infomation, which is quite inconvenient to find the data
comes from which instance.
If `apisix` can add a label like `host_name` to every metrics, I think it
will be helpful.
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