Add instance:node_network_receive_bytes_physical:rate recording rule

[jan--f]

Currently we have instance:node_network_receive_bytes_excluding_lo:rate:

node_exporter/docs/node-mixin/rules/rules.libsonnet

Lines 83 to 97 in 6a3051a

	record: 'instance:node_network_receive_bytes_excluding_lo:rate%(rateInterval)s' % $._config,
	expr: |||
	sum without (device) (
	rate(node_network_receive_bytes_total{%(nodeExporterSelector)s, device!="lo"}[%(rateInterval)s])
	)
	||| % $._config,
	},
	{
	record: 'instance:node_network_transmit_bytes_excluding_lo:rate%(rateInterval)s' % $._config,
	expr: |||
	sum without (device) (
	rate(node_network_transmit_bytes_total{%(nodeExporterSelector)s, device!="lo"}[%(rateInterval)s])
	)
	||| % $._config,
	},

The resulting is used in at least one dashboard:

node_exporter/docs/node-mixin/dashboards/use.libsonnet

Line 153 in 6a3051a

row.new('Network')

On nodes that have virtual links, e.g. bond interfaces this dashboard shows multiples of the actual bandwidth, since virtual and the underlying physical interfaces are aggregated.

I propose to add a rule only for physical interfaces and use that in the dashboard.

The implementation would look very similar to diskSelector or `fsSelector:

node_exporter/docs/node-mixin/config.libsonnet

Line 17 in 6a3051a

fsSelector: 'fstype!=""',