Several tags for filtering targets in consul_sd_config

[ashepelev]

Proposal

According to documentation,

# An optional tag used to filter nodes for a given service.
[ tag: <string> ]

it is not possible to specify several tags to filter targets in consul_sd_config. One can use relabel_configs with action keep or drop but anyway it causes metrics to be pulled.

According to consul documentation it is possible to specify multiple tags in request:

tag (string: "") - Specifies the tag to filter on. This is specified as part of the URL as a query parameter. Can be used multiple times for additional filtering, returning only the results that include all of the tag values provided.

[cstyan]

This will require updating the vendored Consul api, catalog.ServiceMultipleTags was only added ~4 months ago: hashicorp/consul@34e5516