101 lines
4.3 KiB
ReStructuredText
101 lines
4.3 KiB
ReStructuredText
|
|
.. _calendar-events:
|
|
|
|
Calendar Events
|
|
===============
|
|
|
|
Introduction and Format
|
|
-----------------------
|
|
|
|
Certain tasks, for example pruning and garbage collection, need to be
|
|
performed on a regular basis. Proxmox Backup Server uses a format inspired
|
|
by the systemd Time and Date Specification (see `systemd.time manpage`_)
|
|
called `calendar events` for its schedules.
|
|
|
|
`Calendar events` are expressions to specify one or more points in time.
|
|
They are mostly compatible with systemd's calendar events.
|
|
|
|
The general format is as follows:
|
|
|
|
.. code-block:: console
|
|
:caption: Calendar event
|
|
|
|
[WEEKDAY] [[YEARS-]MONTHS-DAYS] [HOURS:MINUTES[:SECONDS]]
|
|
|
|
Note that there either has to be at least a weekday, date or time part.
|
|
If the weekday or date part is omitted, all (week)days are included.
|
|
If the time part is omitted, the time 00:00:00 is implied.
|
|
(e.g. '2020-01-01' refers to '2020-01-01 00:00:00')
|
|
|
|
Weekdays are specified with the abbreviated English version:
|
|
`mon, tue, wed, thu, fri, sat, sun`.
|
|
|
|
Each field can contain multiple values in the following formats:
|
|
|
|
* comma-separated: e.g., 01,02,03
|
|
* as a range: e.g., 01..10
|
|
* as a repetition: e.g, 05/10 (means starting at 5 every 10)
|
|
* and a combination of the above: e.g., 01,05..10,12/02
|
|
* or a `*` for every possible value: e.g., \*:00
|
|
|
|
There are some special values that have specific meaning:
|
|
|
|
================================= ==============================
|
|
Value Syntax
|
|
================================= ==============================
|
|
`minutely` `*-*-* *:*:00`
|
|
`hourly` `*-*-* *:00:00`
|
|
`daily` `*-*-* 00:00:00`
|
|
`weekly` `mon *-*-* 00:00:00`
|
|
`monthly` `*-*-01 00:00:00`
|
|
`yearly` or `annually` `*-01-01 00:00:00`
|
|
`quarterly` `*-01,04,07,10-01 00:00:00`
|
|
`semiannually` or `semi-annually` `*-01,07-01 00:00:00`
|
|
================================= ==============================
|
|
|
|
|
|
Here is a table with some useful examples:
|
|
|
|
======================== ============================= ===================================
|
|
Example Alternative Explanation
|
|
======================== ============================= ===================================
|
|
`mon,tue,wed,thu,fri` `mon..fri` Every working day at 00:00
|
|
`sat,sun` `sat..sun` Only on weekends at 00:00
|
|
`mon,wed,fri` -- Monday, Wednesday, Friday at 00:00
|
|
`12:05` -- Every day at 12:05 PM
|
|
`*:00/5` `0/1:0/5` Every five minutes
|
|
`mon..wed *:30/10` `mon,tue,wed *:30/10` Monday, Tuesday, Wednesday 30, 40 and 50 minutes after every full hour
|
|
`mon..fri 8..17,22:0/15` -- Every working day every 15 minutes between 8 AM and 6 PM and between 10 PM and 11 PM
|
|
`fri 12..13:5/20` `fri 12,13:5/20` Friday at 12:05, 12:25, 12:45, 13:05, 13:25 and 13:45
|
|
`12,14,16,18,20,22:5` `12/2:5` Every day starting at 12:05 until 22:05, every 2 hours
|
|
`*:*` `0/1:0/1` Every minute (minimum interval)
|
|
`*-05` -- On the 5th day of every Month
|
|
`Sat *-1..7 15:00` -- First Saturday each Month at 15:00
|
|
`2015-10-21` -- 21st October 2015 at 00:00
|
|
======================== ============================= ===================================
|
|
|
|
|
|
Differences to systemd
|
|
----------------------
|
|
|
|
Not all features of systemd calendar events are implemented:
|
|
|
|
* no Unix timestamps (e.g. `@12345`): instead use date and time to specify
|
|
a specific point in time
|
|
* no timezone: all schedules use the set timezone on the server
|
|
* no sub-second resolution
|
|
* no reverse day syntax (e.g. 2020-03~01)
|
|
* no repetition of ranges (e.g. 1..10/2)
|
|
|
|
Notes on scheduling
|
|
-------------------
|
|
|
|
In `Proxmox Backup`_ scheduling for most tasks is done in the
|
|
`proxmox-backup-proxy`. This daemon checks all job schedules
|
|
if they are due every minute. This means that even if
|
|
`calendar events` can contain seconds, it will only be checked
|
|
once a minute.
|
|
|
|
Also, all schedules will be checked against the timezone set
|
|
in the `Proxmox Backup`_ server.
|