Can we access pods in Nomad through a Service name as in Kubernetes?

Nomad
,
1

Dear all,

I have Nomad running on a single VM. I have 2 job specs named as rebel-base (2 tasks) and x-wing (1 task). In Kubernetes, I could access the rebel-base pods through a service. For example, I could run the command “curl ” from x-wing pod which then returns a response from rebel-base pod.

Unfortunately I am not able to achieve the same in Nomad. I have created a service using native nomad service discovery. The services are correctly listed down. However, I cannot curl to the service name as in K8S.

I followed the following but I think I am missing something.

Services are registered using the [service] block, with the [provider] parameter with nomad.

task "rebel-base" {
      driver = "docker"

      service {
        name = "rebel-base"
        port = "http"
        provider = "nomad"
        tags = ["rebel-base"]
      }

To access services, other allocations can query the catalog using [template] blocks with the [service] function to query the Consul catalog or the [nomadService] function when using Nomad native service discovery.

I have this in the x-wing job specification. I want to access the rebel-base tasks through this x-wing task.

template {
        data = <<EOH

        {{ range nomadService "rebel-base" }}
          "http://{{ .Address }}:{{ .Port }}"
        {{ end }}
        
        EOH

        destination = "local/env.txt"
      }

Inside the x-wing task the I can see the correct service IPs listed as below in local/env.txt

But when I log into the x-wing pod and try to curl to rebel-base or http://127.0.0.1:24956 it says “Failed to connect to [127.0.0.1] port 24956: connection refused.”

Then I tried to access the http://127.0.0.1:24956 from the VM where I installed Nomad. It gave me the result correctly. However, when I try to access service (curl rebel-base) it says cannot resolve host: rebel-base.

nomad service list
Service Name  Tags
rebel-base    [rebel-base]

nomad service info rebel-base
Job ID      Address          Tags          Node ID   Alloc ID
rebel-base    [rebel-base]  0abf806b  7945615d
rebel-base    [rebel-base]  0abf806b  a14a3e76127.0.0.1:24956127.0.0.1:23016

Am I missing something here? Your kind help would be much appreciated.

Thank you!