Nomad job on several interface

Nomad
1

HI I try to implement a traefick reverse proxy on MY VPS to connect my selft hosted application my VPS is connected in my homeserver via Wireguard
I would Like traefick admin page availlable only on wireguard iterface and that traefick HTTPS port listen on both wireguard and public adress in purpose to go throught wiregard if I access to my site from my home

for that I had two host_network on my VPS nomad config

client {
  enabled       = true

    host_network "private" {
            interface = "wg0"
            }
    host_network "public" {
            interface = "enp1s0"
            }
}

and in my traefik job I have add

    network {
      mode = "host"
      port "http" {
        static  = 80
      }
      port "https" {
        static  = 443
      }
      port "admin" {
        static = 9080
        host_network = "private"
      }
    }

but when I plan my job I have this issue

+/- Job: "traefik-ingress"
+/- Task Group: "traefik-ingress" (1 create/destroy update)
  + Network {
      Hostname: ""
    + MBits:    "0"
    + Mode:     "host"
    + Static Port {
      + HostNetwork: "default"
      + Label:       "http"
      + To:          "0"
      + Value:       "80"
      }
    + Static Port {
      + HostNetwork: "private"
      + Label:       "admin"
      + To:          "0"
      + Value:       "9080"
      }
    + Static Port {
      + HostNetwork: "default"
      + Label:       "https"
      + To:          "0"
      + Value:       "443"
      }
    }
  - Network {
      Hostname: ""
    - MBits:    "0"
    - Mode:     "host"
    - Static Port {
      - HostNetwork: "private"
      - Label:       "admin"
      - To:          "0"
      - Value:       "9080"
      }
    - Static Port {
      - HostNetwork: "public"
      - Label:       "https"
      - To:          "0"
      - Value:       "443"
      }
    - Static Port {
      - HostNetwork: "public"
      - Label:       "http"
      - To:          "0"
      - Value:       "80"
      }
    }
    Task: "server"

Scheduler dry-run:
- WARNING: Failed to place all allocations.
  Task Group "traefik-ingress" (failed to place 1 allocation):
    * Constraint "missing host network \"default\" for port \"http\"": 1 nodes excluded by filter

Job Modify Index: 46618
To submit the job with version verification run:

nomad job run -check-index 46618 traefik-ingress.nomad

When running the job with the check-index flag, the job will only be run if the
job modify index given matches the server-side version. If the index has
changed, another user has modified the job and the plan's results are
potentially invalid.
2

for now only solution I found Is to run one instance of traefik on my home and one on the VPS what do you think of this?

3

If you have a job that needs multiple external ports for a single task, you will need to specify multiple service stanzas. One service stanza for each port that the task is trying to expose.

4

I already use different service for admin page and HTTPS but I would like that one are accessible on only one network interface and other by both

5

@vincentDcmps, it appears that you have specified host_network for your admin port, but you have not specified a host_network for your http or https ports. That means they get the default network… by default. :laughing:

6

yes I 'm aware of that but default network seem not exist except when you don’t use hose_network at all

7

Correct. If you specify host_network for one port, you should specify it also for the other ports. Something like this.

    network {
      mode = "host"
      port "http" {
        static  = 80
        host_network = "public"
      }
      port "https" {
        static  = 443
        host_network = "public"
      }
      port "admin" {
        static = 9080
        host_network = "private"
      }
    }
8

yes it’s that I understand! So if I want a service listening on both Host_network is not implemented?
for now my solution with 2 reverse proxy work correctly and permit to not send flux outside from my homelab.

9

I apologize, apparently I do not understand what you are asking for.

Here is the documentation on host_network.

You could try this:

    network {
      mode = "host"
      port "http" {
        static  = 80
        host_network = "default"
      }
      port "https" {
        static  = 443
        host_network = "default"
      }
      port "admin" {
        static = 9080
        host_network = "private"
      }
    }