3 A script for cloning systems using rsync.
4 Copyright (c)2008-2016 Alexander Barton <alex@barton.de>
11 Backup all or individual systems.
13 Usage: `backup-script [<options>] [<system> [<system> [...]]]`
17 - `-n`, `--dry-run`: Test run only, don't copy any data.
18 - `-p`, `--progress`: Show progress, see rsync(1).
19 - `-t TAG`, `--tag TAG`: Only run jobs with tag TAG (see "tags" variable below).
20 - `x`, `--no-exec`: Don't run global setup-, pre-, and post-exec commands.
22 When no *system* is given, all defined systems are backed up.
24 ### backup-script-wrapper
26 Backup all systems and mail the report to "root".
28 Usage: `backup-script-wrapper [<backup-script-options-and-systems ...>]`
32 Show information about backups.
34 Usage: `backup-status [-q] [<system> [<system> [...]]]`
38 - `-q`: *quick mode*, don't calculate backup sizes.
42 Show "relevant" differences in system configuration between backup generations.
44 Usage: `backup-audit [-q] [-v] [<system> [<system> [...]]]`
48 - `-q`: *quiet mode*, don't show systems without "relevant" changes.
49 - `-v`: *verbose mode*, show all checks that are run.
54 All default configuration variables are read from the first file found of this
55 list: `/usr/local/etc/backup-scrupt.conf`, `/etc/backup-script.conf` or
56 from `/etc/backup-script.d/backup-script.conf` (deprecated).
58 All systems which should be backed-up are configured using individual files
59 in the configuration directory, which is `/usr/local/etc/backup-script.d/` or
60 `/etc/backup-script.d/` by default (whichever is found first), and can be
61 specified using the `conf_d` variable in the main configuration file.
63 The must be one file for each system to backup (files ending in `*.sh` are
64 skipped, as well as files named `backup-script.conf`). Please avoid spaces and
65 other "special" characters! The filename is used as hostname for the system by
66 default, but this can be overwritten using the `system` configuration variable.
68 Variables in `backup-script.conf` must be prefixed with `default_` to define
69 default values for all systems.
71 All defaults can be overwritten in the individual system configuration files.
75 - `/etc/backups-script.conf`: defaults for all hosts
76 - `/etc/backups-script.d/host01.example.net`: configuration for host 1
77 - `/etc/backups-script.d/clientXY.example.com`: configuration for host 2
82 The following global configuration options exist:
84 - `setup_exec`: Script to run _before_ creating the lock file etc.
85 - `pre_exec`: Pre-execution script, run before all jobs.
86 - `post_exec`: Post-execution script, run after all jobs.
88 In Addition, all job configuration options (see below) that have a "default_XXX"
89 variant can be used and define default values for all jobs that don't overwrite
93 ## Configuration Variables
97 System host name. Default: file name.
99 *Note:* There is no `default_system` variable!
101 ### [default_]backup_type
103 Backup type to use. Default: `rsync`.
105 - `rsync`: system backup using rsync(1).
106 Use `source_root` to specify the root directory to save.
108 - `scp`: file backup using scp(1).
109 Use `files` to specify the files to copy.
111 - `disabled`: job is disabled and will not be run. This becomes accounted as
112 "success" in the summary and exit code of the backup script.
114 Please note that neither `ssh_args_add`, `rsync_args_add`, `compress`, nor any
115 "exclude" parameters are supported when using the "scp" backup type! And There
116 "scp" backup type never _deletes_ files from the backup store; so if you reduce
117 the list of files to backup, old files will still be kept, because they were
118 already saved in an older generation (but no longer updated).
122 Remote user. Default: `root`.
124 ### [default_]source_root
126 Remote *root* directory, must end with a slash ("/") character! Default: "/".
128 When saving the whole (remote) system ("/"), default excludes are set up
129 automatically, which exclude standard system directories like /sys and /proc.
133 Space separated list of files to copy when using the "scp" `backup_type`.
134 Default: "running-config".
138 Local backup directory. The backup of each system is stored in a folder named
139 like the system (see `system` variable) inside of this target directory.
141 *Note:* There is *no* default, you have to specify this variable, for example as
142 `default_target` in the `backups-script.conf` file!
144 ### [default_]ssh_args_add
146 Additional parameters for `ssh`. Default: none.
148 ### [default_]rsync_args_add
150 Additional parameters for `rsync`. Default: none.
152 ### [default_]exclude_args_add
154 Additional (exclude) parameters for `rsync`. Default: none.
156 *Deprecated! Use "exclude_dirs_add" instead!*
158 ### [default_]exclude_dirs_add
160 Additional directory path names to exclude from the backup. Use full path names
161 separated by spaces. Default: none.
163 ### [default_]compress
165 Enable (1) or disable (0) rsync transfer compression. Default: 1 (on).
169 Enable (1) or disable (0) ping'ing the target system to make sure that it is
170 reachable before calling `rsync`. Default: 1 (on).
174 Enable (1) or disable (0) *local mode*: when local mode is in effect, `rsync` is
175 called without using `ssh`, which is a good idea when saving the local system.
176 Default: 0 (off; use ssh).
178 ### [default_]generations
180 Number of generations to keep. Default: 0 (none).
182 On a suitable target file systems (see `target` variable), this script can
183 generate generations using snapshots: the script creates a new snapshot
184 named with the time stamp for each generation inside of the system directory
185 inside of the target directory.
187 Supported file systems are:
190 All generations are btrfs subvolumes and named after the date and time.
192 All generations are ZFS file systems. Latest generation is named `current`,
193 elders are links to the ZFS snapshot directories.
195 The latest snapshot is always reachable using a symlink named `latest`
196 inside the system directory.
198 ### [default_]io_timeout
200 The maximum I/O timeout in seconds. If no data is transferred for the specified
201 time then rsync will abort. Default: 1800 (30 minutes).
205 Comma-separated list of tags of this job. All uppercase tag names are reserved
206 and become set automatically on runtime:
208 - NONE: Jobs with no other tags at all.
209 - ALL: Matches all jobs, regardless of their tags (see `-t`/`--tags` option).
210 - LOCAL: All jobs running on "localhost".
214 ### [default_]job_pre_exec
216 Optional script to execute before `rsync` starts. Default: none.
218 When the `job_pre_exec` script returns an error (exit code is not 0), the backup
221 ### [default_]job_post_exec
223 Optional script to execute after `rsync` exited. Default: none.
225 ### Compatibility Variables
227 The following job configurations variables used by the outdated backup-pull(1)
228 script in job definition files are automatically mapped to the new backup-script
232 * source -> source_root
233 * pre_exec -> job_pre_exec
234 * post_exec -> job_post_exec
239 - 1: Unspecific Error!
240 - 2: Usage information has been shown.
241 - 3: Can't read system definition
242 - 4: PID-file exists!
243 - 5: Pre-exec command failed!
244 - 6: There have been systems with errors!
245 - 7: Not all jobs were run!
246 - 9: Aborted (CTRL-C)!