Merge pull request #22 from kibatic/traefik_update

Allow to update traefik binary

README.md

@@ -44,6 +44,18 @@ Add role to your playbook.
          - { role: kibatic.traefik, tags: traefik }
 ```
 
+Update Traefik
+--------------
+
+You have to change `traefik_binary_url` or update this role. Then run your playbook
+with following **extra vars** :
+
+```bash
+$ ansible-playbook playbook.yml -t traefik --extra-vars "traefik_update=yes"
+```
+
+Use same command if you want to downgrade.
+
 License
 -------
 

defaults/main.yml

@@ -7,3 +7,4 @@ traefik_config_file: /etc/traefik.toml
 traefik_template: traefik.toml
 traefik_systemd_unit_template: traefik.service
 traefik_systemd_unit_dest: /etc/systemd/system/traefik.service
+traefik_update: no

tasks/main.yml

@@ -18,27 +18,35 @@
   with_items:
     - "{{ traefik_install_dir }}"
 
+- name: Copy traefik config file
+  template:
+    src: "{{ traefik_template }}.j2"
+    dest: "{{ traefik_config_file }}"
+    owner: root
+    group: root
+    mode: 0744
+  notify:
+    - Restart traefik
+
+- name: Ensure traefik service is stopped before traefik update
+  service:
+    name: traefik
+    state: stopped
+    enabled: yes
+  when: traefik_update == "yes"
+
 - name: Download Traefik binary
   get_url:
     url: "{{ item.url }}"
     dest: "{{ item.dest }}"
     owner: root
     group: root
     mode: 0755
+    force: "{{ traefik_update }}"
   with_items:
     - url: "{{ traefik_binary_url }}"
       dest: "{{ traefik_bin_path }}"
 
-- name: Copy traefik config file
-  template:
-    src: "{{ traefik_template }}.j2"
-    dest: "{{ traefik_config_file }}"
-    owner: root
-    group: root
-    mode: 0744
-  notify:
-    - Restart traefik
-
 - name: Ensure traefik service is enabled and running
   service:
     name: traefik