Be a bit more dynamic with host names

nomad/blocky/blocky.nomad

@@ -3,12 +3,6 @@ variable "config_data" {
   description = "Plain text config file for blocky"
 }
 
-variable "base_hostname" {
-  type = string
-  description = "Base hostname to serve content from"
-  default = "dev.homelab"
-}
-
 job "blocky" {
   datacenters = ["dc1"]
   type = "service"
@@ -29,19 +23,18 @@ job "blocky" {
     }
 
     service {
-      name = "dns"
+      name = "blocky-dns"
       port = "dns"
     }
 
     service {
-      name = "web"
+      name = "blocky-api"
       port = "web"
 
       tags = [
         "traefik.enable=true",
         "traefik.consulcatalog.connect=false",
         "traefik.http.routers.blocky.entrypoints=web,websecure",
-        "traefik.http.routers.blocky.rule=Host(`blocky.${var.base_hostname}`)",
         "traefik.http.routers.blocky.tls=true",
       ]
     }

nomad/blocky/blocky.tf

@@ -5,7 +5,15 @@ variable "base_hostname" {
 }
 
 locals {
-  config_data = file("${path.module}/config.yml")
+  config_data = templatefile(
+    "${path.module}/config.yml",
+    {
+      "base_hostname" = "${var.base_hostname}",
+      # Could get this from consul_service.traefik
+      # but not sure what happens if it doens't exist yet
+      "ingress_address" = "192.168.2.106",
+    }
+  )
 }
 
 resource "nomad_job" "blocky" {
@@ -13,7 +21,6 @@ resource "nomad_job" "blocky" {
     enabled = true
     vars = {
       "config_data" = "${local.config_data}",
-      "base_hostname" = "${var.base_hostname}",
     }
   }
 

nomad/blocky/config.yml

@@ -13,8 +13,7 @@ blocking:
 customDNS:
   customTTL: 1h
   mapping:
-    # TODO: Use a variable for this
-    dev.homelab: 192.168.2.41
+    ${base_hostname}: ${ingress_address}
 
 port: 53
 httpPort: 4000

nomad/metrics/grafana.nomad

@@ -13,7 +13,13 @@ job "grafana" {
       }
     }
 
+    ephemeral_disk {
+      migrate = true
+      sticky = true
+    }
+
     service {
+      name = "grafana"
       port = "web"
 
       connect {
@@ -47,8 +53,6 @@ job "grafana" {
       tags = [
         "traefik.enable=true",
         "traefik.http.routers.grafana.entrypoints=web,websecure",
-        "traefik.http.routers.grafana.rule=Host(`grafana.dev.homelab`)",
-        "traefik.subdomain=grafana-sub",
         "traefik.http.routers.grafana.tls=true",
       ]
     }

nomad/metrics/metrics.tf

@@ -1,9 +1,3 @@
-variable "base_hostname" {
-  type = string
-  description = "Base hostname to serve content from"
-  default = "dev.homelab"
-}
-
 variable "consul_address" {
   type    = string
   description = "address of consul server for dynamic scraping"
@@ -17,11 +11,19 @@ variable "consul_address" {
 #   jobspec = file("${path.module}/exporters.nomad")
 # }
 
+data "consul_nodes" "all-nodes" {
+  query_options {
+    datacenter = "dc1"
+  }
+}
+
 resource "nomad_job" "prometheus" {
   hcl2 {
     enabled = true
     vars = {
-      "consul_address" = "${var.consul_address}",
+      # "consul_address" = "${var.consul_address}",
+      # TODO: Should this be a list?
+      "consul_address" = "http://${data.consul_nodes.all-nodes.nodes[0].address}:8500",
     }
   }
 

nomad/metrics/prometheus.nomad

@@ -19,6 +19,11 @@ job "prometheus" {
       }
     }
 
+    ephemeral_disk {
+      migrate = true
+      sticky = true
+    }
+
     service {
       name = "prometheus"
       port = "web"
@@ -50,7 +55,6 @@ job "prometheus" {
       tags = [
         "traefik.enable=true",
         "traefik.http.routers.prometheus.entrypoints=web,websecure",
-        "traefik.http.routers.prometheus.rule=Host(`prometheus.dev.homelab`)",
         "traefik.http.routers.prometheus.tls=true",
       ]
     }

nomad/nextcloud/nextcloud.nomad

@@ -1,9 +1,3 @@
-variable "base_hostname" {
-  type = string
-  description = "Base hostname to serve content from"
-  default = "dev.homelab"
-}
-
 variable "nextcloud_db" {
   type = string
   default = "nextcloud"
@@ -64,7 +58,6 @@ job "nextcloud" {
       tags = [
         "traefik.enable=true",
         "traefik.http.routers.nextcloud.entrypoints=web,websecure",
-        "traefik.http.routers.nextcloud.rule=Host(`nextcloud.${var.base_hostname}`)",
         "traefik.http.routers.nextcloud.tls=true",
       ]
 
@@ -126,4 +119,4 @@ job "nextcloud" {
       }
     }
   }
-}
+}

nomad/services.tf

@@ -20,7 +20,7 @@ data "consul_service" "read-nomad-cluster" {
 }
 
 locals {
-  nomad_node         = data.consul_service.read-nomad-cluster.service[0]
+  nomad_node = data.consul_service.read-nomad-cluster.service[0]
   nomad_node_address = "http://${local.nomad_node.node_address}:${local.nomad_node.port}"
 }
 
@@ -55,7 +55,6 @@ module "metrics" {
   source = "./metrics"
 
   consul_address = var.consul_address
-  base_hostname = var.base_hostname
 }
 
 module "nextcloud" {

nomad/traefik/traefik.tf

@@ -9,11 +9,18 @@ variable "consul_address" {
   description = "address of consul server for dynamic routes"
 }
 
+data "consul_nodes" "all-nodes" {
+  query_options {
+    datacenter = "dc1"
+  }
+}
+
 resource "nomad_job" "traefik" {
   hcl2 {
     enabled = true
     vars = {
-      "consul_address" = "${var.consul_address}",
+      # "consul_address" = "${var.consul_address}",
+      "consul_address" = "http://${data.consul_nodes.all-nodes.nodes[0].address}:8500",
       "base_hostname" = "${var.base_hostname}",
     }
   }

nomad/whoami.nomad

@@ -27,6 +27,7 @@ job "whoami" {
     }
 
     service {
+      name = "whoami"
       port = "web"
 
       connect {
@@ -55,7 +56,6 @@ job "whoami" {
       tags = [
         "traefik.enable=true",
         "traefik.http.routers.whoami.entrypoints=web,websecure",
-        "traefik.http.routers.whoami.rule=Host(`whoami.${var.base_hostname}`)",
         "traefik.http.routers.whoami.tls=true",
       ]
     }