Allow setting tagged addresses to services

[jorgemarey]

It would be nice to allow setting tagged addresses on the service registrations. For example:

    service {
      name = "gateway-mesh"
      port = "mesh_wan"

      check {
        name = "gateway-mesh-check-tcp"
        type = "tcp"
        interval = "1m"
        timeout = "15s"
      }

      tagged_addresses {
        wan = "${attr.unique.platform.aws.public-ipv4}:${NOMAD_PORT_mesh_wan}"
      }

      connect {
        gateway {
          mesh {}
          proxy {}
        }
      }
    }

[DerekStrickland]

Hi @jorgemarey. Thanks for using Nomad!

So would this be separate and distinct from the existing tags config? If so, do you mind reworking the description using the issue template? It would give us some more context around the use case and would help us a lot in terms of understanding the desired end goal. I'm pasting the template below for you.

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[shoenig]

@DerekStrickland Consul has a distinct concept of tagged_addresses that are orthogonal to the tags familiar to Nomad

https://www.consul.io/api-docs/agent/service#taggedaddresses

This PR is an extension of #12720 where we enabled setting a custom address on service.address, but forgot about Consul's tagged_addresses.

[DerekStrickland]

@shoenig

Thanks for that context!

[shoenig]

Just FYI @jorgemarey I haven't forgotten about this; I'm going to float a small RFC internally just to make sure folks are on the same page across Nomad / Consul.

[lkysow]

FYI this is needed in some cases for Consul mesh gateway wan federation because Consul uses the wan tagged address to tell other Consul DC's how to reach the local DC. If you throw an LB in front of your gateway then you need to set the tagged address to the LB DNS or IP.

[github-actions]

I'm going to lock this issue because it has been closed for 120 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.