Merge branch 'master' into docker-login

roles/configure-bes/tasks/main.yml

@@ -22,5 +22,5 @@
     dest: "/install-config/{{ inventory_hostname }}/{{ item.dst }}"
   delegate_to: bes.csi.cam.ac.uk
   with_items:
-    - { src: "{{ preseed_file_name }}", dst: "preseed.cfg" }
+    - { src: "{{ bes_preseed_file_name }}", dst: "preseed.cfg" }
     - { src: ipxe.cfg, dst: ipxe.cfg }

roles/docker-ce/tasks/configure-firewall.yml

@@ -84,4 +84,5 @@
   ufw:
     state: enabled
     policy: deny
+    direction: incoming
   when: ansible_os_family == "Debian"

roles/traefik/README.md

+# Role: traefik
+
+This role installs the traefik service to a docker swarm cluster. Traefik is a modern HTTP reverse
+proxy and load balancer. Traefik integrates with docker swarm cluster and configures itself 
+automatically and dynamically.
+
+## Dependencies
+
+- `docker-swarm`
+- `zookeeper`
+
+## Role Variables
+
+The following 2 variable should be configured if you wish to configure the traefik dashboard proxy
+service for the purposes of authentication.
+
+- `traefik_dashboard_lookup_group_id`
+- `traefik_dashboard_proxy_cookie_key`
+
+It is recommended that you configure this proxy.
+
+## Running
+Any special settings or constraints needed to run this role
+eg
+```yaml
+- hosts: <some hosts>
+  become: true
+  roles:
+    - role: traefik
+      vars:
+        traefik_dashboard_host: "traefik.infra.<some project>.gcloud.automation.uis.cam.ac.uk"
+```

roles/zookeeper/README.md

+# Role: zookeeper
+
+This role installs the apache zookeeper service to a docker swarm cluster. Provides data synchronisation services to other 
+services distributed on the swarm cluster (eg. traefik).
+
+## Dependencies
+
+* `docker-swarm`
+
+## Required vars
+
+- `zookeeper_root`
+
+A path to the root where zookeeper stores it's data. 
+
+## Running
+Any special settings or constraints needed to run this role
+eg
+```yaml
+- hosts: <some hosts>
+  become: true
+  roles:
+    - role: zookeeper
+      vars:
+        zookeeper_root: "/var/zookeeper"
+```