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|
#!/bin/sh
set -eu
usage() {
cat <<-'EOF'
Usage:
backup [-q] [-C COMMENT] [-x] [ARCHIVE_TAG]
backup -h
EOF
}
help() {
cat <<-'EOF'
Options:
-q disable verbose mode, useful for batch sessions
-C COMMENT the comment text to be attached to the archive
-x enable checking the repository after creating the backup
-h, --help show this message
ARCHIVE_TAG the tag used to create the new
backup (default: "manual")
The repository is expected to have been create with:
$ borg init -e repokey-blake2
The following environment variables are expected to be exported:
$BORG_PASSCOMMAND
$BORG_REPO
$BORG_REMOTE_PATH
Password-less SSH access is required, usually done via adding
/root/.ssh/id_rsa.pub to the ssh remote's
$THE_REMOTE:.ssh/authorized_keys
Root permission is also required.
Examples:
Run backup from cronjob:
$ backup
Run backup from cronjob:
$ backup -q cronjob
Create backup with a comment, a tag, and verbose mode active, and do
verify the repository afterwards:
$ backup -xC 'The backup has a comment'
EOF
}
for flag in "$@"; do
case "$flag" in
--)
break
;;
--help)
usage
help
exit
;;
*)
;;
esac
done
VERBOSE_FLAGS='--verbose --progress'
COMMENT=' '
CHECK=false
while getopts 'qC:xh' flag; do
case "$flag" in
q)
VERBOSE_FLAGS=''
;;
C)
COMMENT="$OPTARG"
;;
x)
CHECK=true
;;
h)
usage
help
exit
;;
*)
usage >&2
exit 2
;;
esac
done
shift $((OPTIND - 1))
ARCHIVE_TAG="${1:-manual}"
if [ "$(id -un)" != 'root' ]; then
printf 'This script must be run as root.\n\n' >&2
usage >&2
exit 2
fi
run() {
STATUS=0
set -x
# shellcheck disable=2086
sudo -i borg create \
$VERBOSE_FLAGS \
--comment "$COMMENT" \
--stats \
--compression lzma,9 \
"$BORG_REPO::$(hostname)-{now}-$ARCHIVE_TAG" \
/mnt/production/ \
/root/ \
/home/ \
/etc/ \
/var/ \
/opt/ \
/srv/ || STATUS=$?
set +x
if [ "$STATUS" = 0 ]; then
return 0
elif [ "$STATUS" = 1 ]; then
printf 'WARNING, but no ERROR.\n' >&2
return 0
else
return "$STATUS"
fi
}
run
if [ "$CHECK" = true ]; then
# shellcheck disable=2086
sudo -i borg check $VERBOSE_FLAGS --verify-data "$BORG_REPO"
fi
|
