3 # backup-script system for cloning systems using rsync
4 # Copyright (c)2008-2018 Alexander Barton, alex@barton.de
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
10 # Please read the file COPYING, README and AUTHORS for more information.
20 # Default settings, can be overwritten in backup-script.conf:
21 [ -d "/usr/local/etc/backup-script.d" ] \
22 && conf_d="/usr/local/etc/backup-script.d" \
23 || conf_d="/etc/backup-script.d"
25 default_backup_type="rsync"
26 default_files="running-config"
28 default_target="/var/backups"
33 # Search configuration file (last one is used as default!)
35 "/usr/local/etc/backup-script.conf" \
36 "/etc/backup-script.conf" \
37 "${conf_d}/backup-script.conf" \
38 "/usr/local/etc/backup-script.conf" \
40 if [ -r "$conf" ]; then
41 # shellcheck source=/dev/null
48 echo "Usage: $NAME [-q|--quiet] [-v|--verbose] [<job> [<job> [...]]]"
49 echo " $NAME <-d|--dirs> <dir1> <dir2>"
51 echo " -d, --dirs Compare two backup directories (not jobs)."
52 echo " -q, --quiet Quite mode, only list jobs with changes or errors."
53 echo " -v, --verbose Verbose mode, show all checks that are run."
55 echo "When no <job> is given, all defined jobs are checked."
61 echo "Differences in $*:"
67 while read -r line; do
83 if [[ "$dir_name" == "/" ]]; then
84 exclude="$exclude"'| \.stamp$| dev$| etc$| proc$| root$| run$| sys$| tmp$'
85 exclude="$exclude"'| data$| net$| srv$'
86 exclude="$exclude"'| [[:alnum:]_-]+\.log(\.[[:alnum:]]+|)$'
89 # shellcheck disable=SC2012
90 find "$base_dir$dir_name". -maxdepth 1 -printf '%M %10u:%-10g %t %12s %f\n' 2>/dev/null \
91 | LC_ALL=C sort -k 9 | grep -Ev "($exclude)"
98 local backup_type="$default_backup_type"
99 local files="$default_files"
100 local generations="$default_generations"
102 local system="$fname"
103 local target="$default_target"
105 # Read in system configuration file
106 # shellcheck source=/dev/null
109 target="$target/$(basename "$f")"
111 [[ -d "$target" ]] || return 0
114 [[ "$system" == "$fname" ]] \
115 && systxt="\"$system\"" \
116 || systxt="\"$fname\" [\"$system\"]"
117 [[ "$local" -eq 0 ]] \
118 && echo "Checking $systxt ..." \
119 || echo "Checking $systxt (local system) ..."
121 # Check if job is disabled
122 if [[ "$backup_type" == "disabled" ]]; then
123 echo "Job is DISABLED and will be skipped."
127 if [ $generations -lt 1 ]; then
128 echo "No generations configured, nothing to compare, skipping system!"
132 local latest_d="$target/latest"
133 if [[ ! -d "$latest_d" || ! -r "$latest_d/.stamp" ]]; then
134 echo "Failed to access latest backup generation in \"$latest_d\", skipping system!"
137 echo "Found latest generation in \"$latest_d\"."
140 # shellcheck source=/dev/null
141 source "$latest_d/.stamp"
143 if [[ $code -ne 0 && $code -ne 24 ]]; then
144 echo "Last backup generation has errors, skipping system!"
148 # Search previous generation without errors
150 # shellcheck disable=SC2045
151 for d in $(ls -1dt "$target/"[0-9]*-[0-9]* 2>/dev/null); do
152 [[ -d "$d" && -r "$d/.stamp" ]] || return 0
155 # shellcheck source=/dev/null
158 if [[ $code -eq 0 || $code -eq 24 ]]; then
163 if [[ -z "$previous_d" || ! -d "$previous_d" || ! -r "$previous_d/.stamp" ]]; then
164 echo "Failed to find previous successfull backup generation, skipping system!"
167 echo "Comparing with generation in $previous_d ..."
169 DiffGenerations "$backup_type" "$previous_d" "$latest_d" "$files"
177 local backup_type="$1"
184 if [[ "$backup_type" == "rsync" ]]; then
193 /boot/grub/grub.cfg \
197 /etc/debian_version \
209 /etc/network/interfaces \
217 /etc/ssh/sshd_config \
222 [[ -r "${gen1_d}${file}" ]] || continue
224 [[ $VERBOSE -ne 0 ]] && echo "Checking \"$file\" ..."
225 if ! diff -U 3 "${gen1_d}${file}" "${gen2_d}${file}" >"$tmp_diff"; then
226 BeginDiff "\"$file\""
227 tail -n +3 "$tmp_diff" | PipeDiff
242 /etc/systemd/network/ \
243 /etc/systemd/system/ \
247 [[ ! -d "${gen1_d}${dir}" ]] && continue
248 [[ ! -d "${gen2_d}${dir}" ]] && continue
250 # Make sure that this is a system root; comparing other
251 # root folders results in misleading output ...
252 [[ "$dir" == "/" && ! -d "${gen1_d}${dir}/etc" ]] && continue
254 [[ $VERBOSE -ne 0 ]] && echo "Checking \"$dir\" ..."
255 ListDirectory "${gen1_d}" "${dir}" >"$tmp_1"
256 ListDirectory "${gen2_d}" "${dir}" >"$tmp_2"
257 if ! diff -U 0 "$tmp_1" "$tmp_2" >"$tmp_diff"; then
258 BeginDiff "\"$dir\" directory"
259 tail -n +3 "$tmp_diff" | egrep -v '^@@ ' | PipeDiff
265 if [[ -d "${gen1_d}/var/lib/dpkg/info" && -d "${gen2_d}/var/lib/dpkg/info" ]]; then
266 [[ $VERBOSE -ne 0 ]] && echo "Checking list of installed packages ..."
267 chroot "${gen1_d}" dpkg --get-selections >"$tmp_1" || return 2
268 chroot "${gen2_d}" dpkg --get-selections >"$tmp_2" || return 2
269 if ! diff -U 0 "$tmp_1" "$tmp_2" >"$tmp_diff"; then
270 BeginDiff "list of installed packages"
271 tail -n +3 "$tmp_diff" | grep -v '^@@ ' | PipeDiff
276 elif [[ "$backup_type" == "scp" ]]; then
278 file=$(basename "$files")
279 [[ $VERBOSE -ne 0 ]] && echo "Checking \"$file\" ..."
280 if ! diff -U 3 "${gen1_d}/${file}" "${gen2_d}/${file}" >"$tmp_diff"; then
281 BeginDiff "\"$file\""
282 tail -n +3 "$tmp_diff" | PipeDiff
287 echo "Backup type \"$backup_type\" undefined, \"$system\" skipped!"
295 tmp_1=$(mktemp "/tmp/$NAME.XXXXXX") || exit 1
296 tmp_2=$(mktemp "/tmp/$NAME.XXXXXX") || exit 1
297 tmp_diff=$(mktemp "/tmp/$NAME.XXXXXX") || exit 1
298 tmp_out=$(mktemp "/tmp/$NAME.XXXXXX") || exit 1
302 rm -f "$tmp_1" "$tmp_2" "$tmp_diff" "$tmp_out"
305 while [[ $# -gt 0 ]]; do
309 [[ $# -eq 2 ]] || Usage
311 DiffGenerations "$default_backup_type" "$1" "$2" "$default_files"
330 if [[ $# -ge 1 ]]; then
332 if [ ! -r "${conf_d}/$s" ]; then
333 echo "$NAME: Can' read \"${conf_d}/$s\"!"
336 sys+=("${conf_d}/$s")
343 for f in "${sys[@]}"; do
344 [[ -r "$f" && -f "$f" ]] || continue
346 fname=$(basename "$f")
348 "backup-script.conf"|*.sh)
353 HandleSystem "$fname" >"$tmp_out" 2>&1; result=$?
354 [[ $QUIET -eq 0 || $result -ne 0 ]] && cat "$tmp_out"