Initial commit

files/backup-strategy.sh

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+#!/bin/sh
+
+# Over 1 year, keep only 1 backup per 6 months
+find -ctime +365 | grep -Ev -- '-0[16]-15\.' | xargs rm -fv
+
+# Over 6 months, keep only 1 backup per month 
+find -ctime +183 | grep -v -- '-15.' | xargs rm -fv
+
+# Over 1 month, keep only 2 backups per month
+find -ctime +31 | grep -Ev -- '-(1|15)\.' | xargs rm -fv
+
+# Over 1 week, keep only 1 backup per week
+find -ctime +8 | grep -Ev -- '-(1|8|15|22|29)\.' | xargs rm -fv

meta/main.yml

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+---
+
+dependencies: []
+
+galaxy_info:
+  role_name: backup-strategy
+  author: 'Pierre-Olivier Mercier <nemunaire+iac@nemunai.re>'
+  description: Install a script to be able to perform a cleaning between backups
+  license: GPL-3.0-or-later
+  min_ansible_version: 2.9
+  platforms:
+    - name: Alpine
+      versions:
+        - all
+    - name: Debian
+      versions:
+        - all
+    - name: Gentoo
+      versions:
+        - all
+    - name: Ubuntu
+      versions:
+        - all
+  galaxy_tags: []

tasks/main.yml

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+---
+- name: Copy the backup strategy script
+  copy:
+    src: backup_strategy.sh
+    dest: /media/backups/backup_strategy.sh