Gentoo Archives: gentoo-user

From: Alan McKinnon <alan.mckinnon@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Hows this for rsnapshot cron jobs?
Date: Sun, 21 Apr 2013 20:33:55
Message-Id: 51744CF6.80305@gmail.com
In Reply to: [gentoo-user] Hows this for rsnapshot cron jobs? by Tanstaafl
1 On 21/04/2013 20:47, Tanstaafl wrote:
2 > Ok, my goal is to keep 3 'snapshots' per day (11:30am, 2:30pm and
3 > 5:30pm), 7 daily's (8:50pm), 4 weekly's (8:40pm), 12 monthly's (8:30pm),
4 > and 5 yearly's (8:20pm).
5 >
6 > My myhost1.conf has:
7 >
8 > interval hourly 3
9 > interval daily 7
10 > interval weekly 4
11 > interval monthly 12
12 > interval yearly 5
13 >
14 > And my /etc/crontab now looks like:
15 >
16 >> # for vixie cron
17 >> # $Header:
18 >> /var/cvsroot/gentoo-x86/sys-process/vixie-cron/files/crontab-3.0.1-r4,v 1.3
19 >> 2011/09/20 15:13:51 idl0r Exp $
20 >>
21 >> # Global variables
22 >> SHELL=/bin/bash
23 >> PATH=/sbin:/bin:/usr/sbin:/usr/bin
24 >> MAILTO=root
25 >> HOME=/
26 >>
27 >> # check scripts in cron.hourly, cron.daily, cron.weekly and cron.monthly
28 >> 59 * * * * root rm -f /var/spool/cron/lastrun/cron.hourly
29 >> 9 3 * * * root rm -f /var/spool/cron/lastrun/cron.daily
30 >> 19 4 * * 6 root rm -f /var/spool/cron/lastrun/cron.weekly
31 >> 29 5 1 * * root rm -f /var/spool/cron/lastrun/cron.monthly
32 >> */10 * * * * root test -x /usr/sbin/run-crons &&
33 >> /usr/sbin/run-crons
34 >> #
35 >> # rsnapshot cronjobs
36 >> #
37 >> 30 11,14,17 * * * root rsnapshot -c /etc/rsnapshot/myhost1.conf
38 >> sync; rsnapshot -c /etc/rsnapshot/myhost1.conf hourly
39 >> 50 20 * * * root rsnapshot -c /etc/rsnapshot/myhost1.conf daily
40 >> 40 20 * * 6 root rsnapshot -c /etc/rsnapshot/myhost1.conf weekly
41 >> 30 20 1 * * root rsnapshot -c /etc/rsnapshot/myhost1.conf monthly
42 >> 20 20 1 * * root rsnapshot -c /etc/rsnapshot/myhost1.conf yearly
43
44 Only the last line is wrong - your monthly and yearly are equivalent.To
45 be properly yearly, you need a month value in field 4.
46
47 I'm not familiar with rsnapshot, I assume that package can deal with how
48 many of each type of snapshot to retain in it's conf file? I see no
49 crons to delete out of date snapshots.
50
51
52 And, more as a nitpick than anything else, I always recommend that when
53 a sysadmin adds a root cronjob, use crontab -e so it goes in
54 /var/spool/cron, not /etc/crontab. Two benefits:
55
56 - syntax checking when you save and quit
57 - if you let portage, package managers, chef, puppet or whatever manage
58 your global cronjobs in /etc/portage, then there's no danger that system
59 will trash the stuff that you added there manually.
60
61 --
62 Alan McKinnon
63 alan.mckinnon@×××××.com

Replies

Subject Author
Re: [gentoo-user] Hows this for rsnapshot cron jobs? Tanstaafl <tanstaafl@×××××××××××.org>