Expose load balancer IP address, set DNS server on consul-nomad nodes

Vagrantfile

@@ -28,7 +28,8 @@ Vagrant.configure(2) do |config|
     ansible.groups = {
       "consul_nomad" => ["consul-nomad-node[1:#{$max_nodes}]"],
       "all:vars" => {
-        "vagrant_consul_nomad_ips" => $all_nodes
+        "vagrant_consul_nomad_ips" => $all_nodes,
+        "vagrant_loadbalancer_ip" => "#{get_ip(0)}"
       }
     }
   end

group_vars/all.yml

@@ -18,3 +18,4 @@ network_interface_ipv4: "{{ hostvars[inventory_hostname]['ansible_' + network_in
 # When provisioned with Vagrant, use the list `vagrant_consul_nomad_ips` passed
 # as group variable. Otherwise use `ansible_host` from the inventory file.
 consul_nomad_ips: "{{ vagrant_consul_nomad_ips | default(groups['consul_nomad'] | map('extract', hostvars, 'ansible_host') | list) }}"
+loadbalancer_ip: "{{ vagrant_loadbalancer_ip | default(hostvars['loadbalancer']['ansible_host']) }}"

playbook.yml

@@ -8,6 +8,19 @@
     - name: consul
     - name: nomad
 
+  post_tasks:
+    - name: Disable systemd-resolved service
+      systemd:
+        name: systemd-resolved
+        state: stopped
+        enabled: no
+
+    - name: Set nameserver to localhost
+      copy:
+        content: "nameserver {{ loadbalancer_ip }}"
+        dest: /etc/resolv.conf
+
+
 - hosts: loadbalancer
   become: yes
   roles: