build role

defaults/main.yml

@@ -1,2 +1,26 @@
 ---
 # defaults file for ansible-consul
+consul_server: True
+consul_ui: True
+consul_iface: "{{ ansible_default_ipv4.interface }}"
+consul_bind_address: "{{ hostvars[inventory_hostname]['ansible_'+ consul_iface | replace('-', '_')]['ipv4']['address']}}"
+consul_client_addr: ""
+consul_bootstrap: False
+
+consul_data_dir: "/opt/consul"
+consul_datacenter: "dc1"
+consul_gossip_encryption_key:
+
+consul_ansible_group: "consul"
+consul_servers_list: "\
+  {% set _consul_servers_list = [] %}\
+  {% for host in groups[consul_ansible_group] %}\
+  {% set _consul_server = hostvars[host]['consul_server']|default(true,true) %}\
+  {% if ( _consul_server == True) %}\
+  {% if _consul_servers_list.append(host) %}{% endif %}\
+  {% endif %}\
+  {% endfor %}\
+  {{ _consul_servers_list }}"
+
+consul_join: []
+consul_join_wan: []

tasks/main.yml

@@ -1,2 +1,27 @@
 ---
-# tasks file for ansible-consul
+- name: Include OS-specific variables
+  include_vars: "{{ item }}"
+  with_first_found:
+    - files:
+        - "{{ ansible_os_family }}-{{ ansible_distribution_major_version }}.yml"
+        - "{{ ansible_os_family }}.yml"
+
+- name: install package
+  package:
+    name: "{{ consul_os_package }}"
+    state: present
+
+- name: apply config template
+  block:
+    - name: server template
+      template:
+        src: config.hcl.j2
+        dest: /etc/consul.d/config.hcl
+        owner: consul
+        mode: 644
+
+- name: ensure service is started
+  systemd:
+    name: "{{  consul_service_name }}"
+    state: started
+    enabled: True

templates/config.hcl.j2

@@ -0,0 +1,41 @@
+
+bootstrap= {{consul_bootstrap|lower}}
+server= {{consul_server|lower}}
+
+{% if consul_bind_address %}
+bind_addr="{{consul_bind_address}}"
+{% endif %}
+{% if consul_client_addr %}
+client_addr="{{consul_client_addr}}"
+{% endif %}
+
+{%if consul_ui %}
+ui_config {
+  enabled = true
+}
+{%endif%}
+
+{% if consul_gossip_encryption_key %}
+encrypt= "{{consul_gossip_encryption_key}}"
+{% endif %}
+
+
+datacenter= "{{consul_datacenter}}"
+data_dir= "{{consul_data_dir}}"
+acl {
+  enabled = false
+  default_policy = "allow"
+  enable_token_persistence = true
+}
+
+{% for server in _consul_lan_servers %}
+{%   set _ = consul_join.append(hostvars[server]['consul_bind_address'] | default(hostvars[server]['ansible_default_ipv4']['address'],true) | mandatory) %}
+{% endfor %}
+retry_join= {{ consul_join | map('ipwrap') | list | to_json }}
+
+{% if _consul_wan_servercount | int > 0 %}
+  {% for server in _consul_wan_servers %}
+  {%   set _ = consul_join_wan.append(hostvars[server]['consul_bind_address']) %}
+  {% endfor %}
+retry_join_wan= {{ consul_join_wan | map('ipwrap') | list | to_json }}
+{% endif %}

vars/Archlinux.yml

@@ -0,0 +1,6 @@
+---
+consul_os_package:
+  - consul
+  - consul-template
+
+consul_service_name: consul

vars/main.yml

@@ -1,2 +1,23 @@
 ---
 # vars file for ansible-consul
+_consul_lan_servers: "\
+  {% set __consul_lan_servers = [] %}\
+  {% for server in consul_servers_list %}\
+  {% set _consul_datacenter = hostvars[server]['consul_datacenter'] | default('dc1', true) %}\
+  {% if _consul_datacenter == consul_datacenter %}\
+  {% if __consul_lan_servers.append(server) %}{% endif %}\
+  {% endif %}\
+  {% endfor %}\
+  {{ __consul_lan_servers }}"
+_consul_lan_servercount: "{{ (_consul_lan_servers | length) }}"
+
+_consul_wan_servers: "\
+  {% set __consul_wan_servers = [] %}\
+  {% for server in consul_servers_list %}\
+  {% set _consul_datacenter = hostvars[server]['consul_datacenter'] | default('dc1', true) %}\
+  {% if _consul_datacenter != consul_datacenter %}\
+  {% if __consul_wan_servers.append(server) %}{% endif %}\
+  {% endif %}\
+  {% endfor %}\
+  {{ __consul_wan_servers }}"
+_consul_wan_servercount: "{{ (_consul_wan_servers | length) }}"