alpinefiles

 1#!/bin/sh
 2# Based off of https://borgbackup.readthedocs.io/en/stable/quickstart.html#automating-backups
 3# Init the repo with borg init -e none /srv/backup
 4
 5# Setting this, so the repo does not need to be given on the commandline:
 6export BORG_REPO=/srv/backup
 7
 8# some helpers and error handling:
 9info() { printf "\n%s %s\n\n" "$( date )" "$*" >&2; }
10trap 'echo $( date ) Backup interrupted >&2; exit 2' INT TERM
11
12info "Starting backup"
13
14# Backup the most important directories into an archive named after
15# the machine this script is currently running on:
16
17borg create                         \
18    --verbose                       \
19    --filter AME                    \
20    --list                          \
21    --stats                         \
22    --show-rc                       \
23    --compression lz4               \
24    --exclude-caches                \
25                                    \
26    ::'{now}'                       \
27    /srv/git                        \
28    /srv/docker                     \
29    /srv/data                       \
30    /etc/caddy                      \
31
32backup_exit=$?
33
34info "Pruning repository"
35
36# Use the `prune` subcommand to maintain 7 daily, 4 weekly and 6 monthly
37# archives of THIS machine.
38
39borg prune                          \
40    --list                          \
41    --show-rc                       \
42    --keep-daily    7               \
43    --keep-weekly   4               \
44    --keep-monthly  6               \
45
46prune_exit=$?
47
48# actually free repo disk space by compacting segments
49
50info "Compacting repository"
51
52borg compact
53
54compact_exit=$?
55
56# use highest exit code as global exit code
57global_exit=$(( backup_exit > prune_exit ? backup_exit : prune_exit ))
58global_exit=$(( compact_exit > global_exit ? compact_exit : global_exit ))
59
60if [ ${global_exit} -eq 0 ]; then
61    info "Backup, Prune, and Compact finished successfully"
62elif [ ${global_exit} -eq 1 ]; then
63    info "Backup, Prune, and/or Compact finished with warnings"
64else
65    info "Backup, Prune, and/or Compact finished with errors"
66fi
67
68exit ${global_exit}