upgrade/downgrade redis

handlers/main.yml

@@ -3,10 +3,12 @@
   service:
     name: "{{ redis_service_name }}"
     state: restarted
-  when: redis_as_service
+  listen: "restart redis"
+  when: redis_as_service and not redis_sentinel
 
 - name: "restart sentinel {{ redis_sentinel_port }}"
   service:
     name: sentinel_{{ redis_sentinel_port }}
     state: restarted
-  when: redis_as_service
+  listen: "restart redis"
+  when: redis_as_service and redis_sentinel

tasks/download.yml

@@ -16,6 +16,7 @@
     url: "{{ redis_download_url }}"
     dest: /usr/local/src/redis-{{ redis_version }}.tar.gz
     sha256sum: "{{ redis_checksum|default(omit) }}"
+  register: redis_upgrade
   when:
     - not redis_tarball
     - ansible_version.major < 2
@@ -25,6 +26,7 @@
     url: "{{ redis_download_url }}"
     dest: /usr/local/src/redis-{{ redis_version }}.tar.gz
     checksum: "{{ redis_checksum|default(omit) }}"
+  register: redis_upgrade
   when:
     - not redis_tarball
     - ansible_version.major >= 2

tasks/install.yml

@@ -1,4 +1,9 @@
 ---
+- name: check for redis installation
+  stat:
+    path: "{{ redis_install_dir }}/bin/redis-server"
+  register: redis_prev_installation
+
 - name: enable overcommit in sysctl
   sysctl:
     name: vm.overcommit_memory
@@ -56,7 +61,8 @@
   command: make PREFIX={{ redis_install_dir }} install
   args:
     chdir: /usr/local/src/redis-{{ redis_version }}
-    creates: "{{ redis_install_dir }}/bin/redis-server"
+  when: redis_prev_installation.stat.exists == False or redis_upgrade.changed
+  notify: "restart redis"
 
 - name: list redis binaries to add to alternatives
   command: ls -1 {{ redis_install_dir }}/bin