3 A script for backing up data using `ssh`(1), `rsync`(1), and `scp`(1).
4 Can handle backup generations on *btrfs* and *ZFS*.
6 Copyright (c)2008-2020 Alexander Barton (<alex@barton.de>)
7 Homepage: https://github.com/alexbarton/backup-script
12 Call the scripts located in `./bin` directly from the source folder, or run
13 `make install` to install them to `/usr/local/sbin`.
15 You can set `PREFIX` to use an other path prefix than `/usr/local` like this:
16 `make PREFIX=/opt/backup-script install`.
22 Run all or individual backup jobs.
24 Usage: `backup-script [<options>] [<job> [<job> [...]]]`
28 - `-n`, `--dry-run`: Test run only, don't copy any data.
29 - `-p`, `--progress`: Show progress, see rsync(1).
30 - `-t TAG`, `--tag TAG`: Only run jobs with tag TAG (see "tags" variable below).
31 - `-x`, `--no-exec`: Don't run global setup-, pre-, and post-exec commands.
33 When no *job* is given, all defined jobs are run.
35 ### backup-script-wrapper
37 Backup all systems ("run all jobs") and mail the report to "root".
39 Usage: `backup-script-wrapper [<backup-script-options-and-job-names ...>]`
43 Show information about backups.
47 - `backup-status [--errors|--latest] [--quick] [<job> [<job> [...]]]`
48 - `backup-status --running`
52 - `-e`, `--errors`: only show current backups with errors (implies `--latest`).
53 - `-l`, `--latest`: only show latest backup generations.
54 - `-q`, `--quick`: *quick mode*, don't calculate backup sizes.
55 - `-r`, `--running`: check if an `backup-script` task is currently running.
57 When no *job* is given, all defined jobs are listed.
61 Show "relevant" differences in system configuration between backup generations.
63 Usage: `backup-audit [-q] [-v] [<job> [<job> [...]]]`
67 - `-d`, `--dirs`: compare two backup directories (not jobs).
68 - `-q`, `--quiet`: *quite mode*, only list jobs with changes or errors.
69 - `-v`, `--verbose`: *verbose mode*, show all checks that are run.
71 When no *job* is given, all defined jobs are checked.
76 All default configuration variables are read from the first file found of this
77 list: `/usr/local/etc/backup-scrupt.conf`, `/etc/backup-script.conf` or
78 from `/etc/backup-script.d/backup-script.conf` (deprecated).
80 All jobs that should be backed-up are configured using individual files
81 in the configuration directory, which is `/usr/local/etc/backup-script.d/` or
82 `/etc/backup-script.d/` by default (whichever is found first), and can be
83 specified using the `conf_d` variable in the main configuration file.
85 The must be one job file for each system to backup (files ending in `*.sh` are
86 skipped, as well as files named `backup-script.conf`). Please avoid spaces and
87 other "special" characters! The filename is used as hostname for the system by
88 default, but this can be overwritten using the `system` configuration variable.
90 Variables in `backup-script.conf` must be prefixed with `default_` to define
91 default values for all jobs.
93 All defaults can be overwritten in the individual job configuration files.
97 - `/etc/backups-script.conf`: defaults for all hosts
98 - `/etc/backups-script.d/host01.example.net`: configuration for host 1
99 - `/etc/backups-script.d/clientXY.example.com`: configuration for host 2
104 The following global configuration options exist:
106 - `setup_exec`: Script to run _before_ creating the lock file etc.
107 - `pre_exec`: Pre-execution script, run before all jobs.
108 - `post_exec`: Post-execution script, run after all jobs.
110 In Addition, all job configuration options (see below) that have a "default_XXX"
111 variant can be used and define default values for all jobs that don't overwrite
115 ## Configuration Variables
119 System host name. Default: file name.
121 *Note:* There is no `default_system` variable!
123 ### [default_]backup_type
125 Backup type to use. Default: `rsync`.
127 - `rsync`: system backup using rsync(1).
128 Use `source_root` to specify the root directory to save.
130 - `scp`: file backup using scp(1).
131 Use `files` to specify the files to copy.
133 - `disabled`: job is disabled and will not be run. This becomes accounted as
134 "success" in the summary and exit code of the backup script.
136 Please note that neither `ssh_args_add`, `rsync_args_add`, `compress`, nor any
137 "exclude" parameters are supported when using the "scp" backup type! And There
138 "scp" backup type never _deletes_ files from the backup store; so if you reduce
139 the list of files to backup, old files will still be kept, because they were
140 already saved in an older generation (but no longer updated).
144 Remote user. Default: `root`.
146 ### [default_]source_root
148 Remote *root* directory, must end with a slash ("/") character! Default: "/".
150 When saving the whole (remote) system ("/"), default excludes are set up
151 automatically, which exclude standard system directories like /sys and /proc.
155 Space separated list of files to copy when using the "scp" `backup_type`.
156 Default: "running-config".
160 Local backup directory. The backup data of each job is stored in a folder named
161 like the job (see `system` variable) inside of this target directory.
163 *Note:* There is *no* default, you have to specify this variable, for example as
164 `default_target` in the `backups-script.conf` file!
166 ### [default_]ssh_args_add
168 Additional parameters for `ssh`. Default: none.
170 ### [default_]rsync_args_add
172 Additional parameters for `rsync`. Default: none.
174 ### [default_]exclude_args_add
176 Additional (exclude) parameters for `rsync`. Default: none.
178 *Deprecated! Use "exclude_dirs_add" instead!*
180 ### [default_]exclude_dirs_add
182 Additional directory path names to exclude from the backup. Use full path names
183 separated by spaces. Default: none.
185 ### [default_]compress
187 Enable (1) or disable (0) rsync transfer compression. Default: 1 (on).
191 Enable (1) or disable (0) ping'ing the target system to make sure that it is
192 reachable before calling `rsync`. Default: 1 (on).
196 Enable (1) or disable (0) *local mode*: when local mode is in effect, `rsync` is
197 called without using `ssh`, which is a good idea when saving the local system.
198 Default: 0 (off; use ssh).
200 ### [default_]generations
202 Number of generations to keep. Default: 0 (none).
204 On a suitable target file systems (see `target` variable), this script can
205 generate generations using snapshots: the script creates a new snapshot
206 named with the time stamp for each generation inside of the system directory
207 inside of the target directory.
209 Supported file systems are:
212 All generations are btrfs subvolumes and named after the date and time.
214 All generations are ZFS file systems. Latest generation is named `current`,
215 elders are links to the ZFS snapshot directories.
217 The latest snapshot is always reachable using a symlink named `latest`
218 inside the system directory.
220 ### [default_]io_timeout
222 The maximum I/O timeout in seconds. If no data is transferred for the specified
223 time then rsync will abort. Default: 1800 (30 minutes).
227 Comma-separated list of tags of this job. All uppercase tag names are reserved
228 and become set automatically on runtime:
230 - NONE: Jobs with no other tags at all.
231 - ALL: Matches all jobs, regardless of their tags (see `-t`/`--tags` option).
232 - LOCAL: All jobs running on "localhost".
236 ### [default_]job_pre_exec
238 Optional script to execute before `rsync` starts. Default: none.
240 When the `job_pre_exec` script returns an error (exit code is not 0), the backup
243 ### [default_]job_post_exec
245 Optional script to execute after `rsync` exited. Default: none.
247 ### Compatibility Variables
249 The following job configurations variables used by the outdated backup-pull(1)
250 script in job definition files are automatically mapped to the new backup-script
254 * `source` -> `source_root`
255 * `pre_exec` -> `job_pre_exec`
256 * `post_exec` -> `job_post_exec`
261 - 0: No error, success.
262 - 1: Unspecific Error!
263 - 2: Usage information has been shown.
264 - 3: Can't read job definition
265 - 4: PID-file exists!
266 - 5: Pre-exec command failed!
267 - 6: There have been jobs with errors!
268 - 7: Not all jobs were run!
269 - 9: Aborted (CTRL-C)!