Projet

Général

Profil

Backup » Historique » Version 12

Laurent GUERBY, 14/04/2016 17:34

1 3 Laurent GUERBY
{{>toc}}
2 1 Laurent GUERBY
3 1 Laurent GUERBY
h1. Backup
4 1 Laurent GUERBY
5 1 Laurent GUERBY
h2. Liens
6 1 Laurent GUERBY
7 1 Laurent GUERBY
* [[Backup_infra]]
8 1 Laurent GUERBY
* [[Apt_Backports_TTNN]] borg debian packaging
9 6 Laurent GUERBY
* https://www.reddit.com/r/linux/comments/42feqz/i_asked_here_for_the_optimal_backup_solution_and/
10 1 Laurent GUERBY
11 1 Laurent GUERBY
h2. BackupPC
12 1 Laurent GUERBY
13 1 Laurent GUERBY
* http://backuppc.sourceforge.net/
14 1 Laurent GUERBY
15 1 Laurent GUERBY
h2. Attic
16 1 Laurent GUERBY
17 1 Laurent GUERBY
* https://attic-backup.org/
18 1 Laurent GUERBY
* https://lists.tetaneutral.net/pipermail/technique/2015-September/001971.html
19 1 Laurent GUERBY
** Logiciel de backup : choix de attic
20 1 Laurent GUERBY
21 1 Laurent GUERBY
h2. Borg
22 1 Laurent GUERBY
23 1 Laurent GUERBY
* https://github.com/borgbackup
24 1 Laurent GUERBY
* http://readthedocs.org/projects/borgbackup/
25 2 Laurent GUERBY
* http://puppet.tetaneutral.net/pool/main/b/borgbackup/
26 2 Laurent GUERBY
* http://puppet.tetaneutral.net/dists/
27 1 Laurent GUERBY
28 11 Laurent GUERBY
h2. Borg script
29 11 Laurent GUERBY
30 11 Laurent GUERBY
Pour une machine qui va etre eteinte et rallumée de maniere non controlable.
31 11 Laurent GUERBY
32 12 Laurent GUERBY
Creation initiale avec un user normal capable de ssh sur MACHINE:PORT :
33 12 Laurent GUERBY
34 12 Laurent GUERBY
<pre>
35 12 Laurent GUERBY
borg init --encryption keyfile ssh://USER@MACHINE:PORT/some/where/borg/NICK-repo
36 12 Laurent GUERBY
</pre>
37 12 Laurent GUERBY
38 12 Laurent GUERBY
Et setup cron + script :
39 11 Laurent GUERBY
<pre>
40 11 Laurent GUERBY
# crontab -l
41 11 Laurent GUERBY
@reboot /root/cron-borg.sh
42 11 Laurent GUERBY
43 11 Laurent GUERBY
44 11 Laurent GUERBY
45 11 Laurent GUERBY
# cat /root/cron-borg.sh
46 11 Laurent GUERBY
#!/bin/bash
47 11 Laurent GUERBY
export LANG=en_US.UTF-8
48 11 Laurent GUERBY
mkdir -p /root/borg >& /dev/null
49 11 Laurent GUERBY
50 11 Laurent GUERBY
sleep 300
51 11 Laurent GUERBY
echo === start === $(date) >> /root/borg/cron.log
52 11 Laurent GUERBY
53 11 Laurent GUERBY
NICK=myhost
54 11 Laurent GUERBY
REPO=ssh://USER@MACHINE:PORT/some/where/borg/${NICK}-repo
55 11 Laurent GUERBY
export BORG_PASSPHRASE=lalalala
56 11 Laurent GUERBY
57 11 Laurent GUERBY
if [ -f /root/borg/stamp ]; then
58 11 Laurent GUERBY
    STAMP=$(cat /root/borg/stamp)
59 11 Laurent GUERBY
    borg break-lock $REPO
60 11 Laurent GUERBY
else
61 11 Laurent GUERBY
    STAMP=$(date '+%Y%m%dT%H%M%S')
62 11 Laurent GUERBY
    if [ -f /root/borg/previous-stamp ]; then
63 11 Laurent GUERBY
	  PREVIOUS_STAMP=$(cat /root/borg/previous-stamp)
64 11 Laurent GUERBY
	  if [ "${STAMP%T*}" = "${PREVIOUS_STAMP%T*}" ]; then
65 11 Laurent GUERBY
              echo === delay === $(date) >> /root/borg/cron.log
66 11 Laurent GUERBY
	      exit 0
67 11 Laurent GUERBY
	  fi
68 11 Laurent GUERBY
    fi
69 11 Laurent GUERBY
    echo $STAMP > /root/borg/stamp
70 11 Laurent GUERBY
fi
71 11 Laurent GUERBY
72 11 Laurent GUERBY
73 11 Laurent GUERBY
borg create --compression lz4 --stats --verbose --exclude /root/borg --exclude-caches --one-file-system ${REPO}::${NICK}-$STAMP / >> /root/borg/log-$STAMP 2>> /root/borg/err-$STAMP
74 11 Laurent GUERBY
75 11 Laurent GUERBY
if [ $? -eq 0 ]; then
76 11 Laurent GUERBY
    mv -f /root/borg/stamp /root/borg/previous-stamp >& /dev/null
77 11 Laurent GUERBY
    rm -f /root/borg/stamp >& /dev/null
78 11 Laurent GUERBY
fi
79 11 Laurent GUERBY
80 11 Laurent GUERBY
81 11 Laurent GUERBY
echo === done === $(date) >> /root/borg/cron.log
82 11 Laurent GUERBY
</pre>
83 11 Laurent GUERBY
84 1 Laurent GUERBY
h2. Migration Attic vers Borg
85 1 Laurent GUERBY
86 7 Laurent GUERBY
* https://github.com/borgbackup/borg/pull/231
87 4 Mehdi Abaakouk
* old: https://chiliproject.tetaneutral.net/projects/git-tetaneutral-net/repository/puppet-backup
88 4 Mehdi Abaakouk
* new: https://chiliproject.tetaneutral.net/projects/git-tetaneutral-net/repository/puppetmaster/revisions/master/entry/modules/ttnn/manifests/backup.pp
89 1 Laurent GUERBY
** git history BackupPC => Attic => Borg
90 1 Laurent GUERBY
91 4 Mehdi Abaakouk
<pre>
92 5 Laurent GUERBY
# apt-get -t jessie-backports install borgbackup
93 4 Mehdi Abaakouk
$ cd /backup/attic/
94 4 Mehdi Abaakouk
$ borg upgrade <repo>
95 4 Mehdi Abaakouk
$ borg check --repair <repo>
96 4 Mehdi Abaakouk
$ mv <repo> ../borg/
97 4 Mehdi Abaakouk
$ chown -R backupinfra: /backup/borg/<repo>
98 4 Mehdi Abaakouk
</pre>
99 4 Mehdi Abaakouk
100 8 Laurent GUERBY
Dans le module puppet, le changement le plus important est le parametre compression explicite pour correspondre au défaut de attic create :
101 4 Mehdi Abaakouk
102 4 Mehdi Abaakouk
<pre>
103 8 Laurent GUERBY
attic create ... <repo> -> borg create --compression zlib,6 ... <repo>
104 4 Mehdi Abaakouk
</pre>
105 4 Mehdi Abaakouk
106 4 Mehdi Abaakouk
Sinon le prochain backup sera non compressé, et aucun nouveau chucks ne correspondra aux anciens -> perte de la dedup. "zlib,6" étant le niveau de compression de attic.
107 9 Laurent GUERBY
108 9 Laurent GUERBY
https://github.com/jborg/attic/issues/299
109 10 Laurent GUERBY
http://borgbackup.readthedocs.org/en/stable/usage.html#environment-variables
110 9 Laurent GUERBY
<pre>
111 9 Laurent GUERBY
export ATTIC_UNKNOWN_UNENCRYPTED_REPO_ACCESS_IS_OK=yes
112 9 Laurent GUERBY
</pre>