Move backups to absolute time

inventory/hosts.yml

@@ -23,7 +23,6 @@ all:
         ansible_pull_time: "*-*-* 03:00:00"
         aws:
           backup_bucket: 9iron-backups-home
-        backups_frequency: 1d
         desktop_web_repo: "https://git.9iron.club/salt/www"
         zerotier_network_id: !vault |
                   $ANSIBLE_VAULT;1.1;AES256
@@ -45,7 +44,6 @@ all:
       children:
         dbservers:
           vars:
-            backups_frequency: 12h
           hosts:
             psql1.9iron.club:
         webservers:
@@ -54,7 +52,6 @@ all:
             fedi1.9iron.club:
         gameservers:
           vars:
-            backups_frequency: 6h
             steam_api_key: !vault |
                       $ANSIBLE_VAULT;1.1;AES256
                       39616163316634306633623435636633623966306537636639316439343839393231376661666335

roles/base-backups/defaults/main.yml

@@ -2,4 +2,4 @@
 # vim:ft=ansible:
 backups_outdir: "/opt/backups/out"
 backups_boot_delay: 1h
-backups_frequency: 24h
+backups_time: "*-*-* 02:00:00"

roles/base-backups/templates/9iron-backup.timer

@@ -5,7 +5,7 @@ Description=9iron backup timer
 [Timer]
 Persistent=true
 OnBootSec={{ backups_boot_delay }}
-OnUnitActiveSec={{ backups_frequency }}
+OnCalendar={{ backups_time }}
 
 [Install]
 WantedBy=timers.target