| 1 | mailto(rsync-bugs@samba.org) |
| 2 | manpage(rsyncd.conf)(5)(19 May 2005)()() |
| 3 | manpagename(rsyncd.conf)(configuration file for rsync in daemon mode) |
| 4 | manpagesynopsis() |
| 5 | |
| 6 | rsyncd.conf |
| 7 | |
| 8 | manpagedescription() |
| 9 | |
| 10 | The rsyncd.conf file is the runtime configuration file for rsync when |
| 11 | run as an rsync daemon. |
| 12 | |
| 13 | The rsyncd.conf file controls authentication, access, logging and |
| 14 | available modules. |
| 15 | |
| 16 | manpagesection(FILE FORMAT) |
| 17 | |
| 18 | The file consists of modules and parameters. A module begins with the |
| 19 | name of the module in square brackets and continues until the next |
| 20 | module begins. Modules contain parameters of the form 'name = value'. |
| 21 | |
| 22 | The file is line-based -- that is, each newline-terminated line represents |
| 23 | either a comment, a module name or a parameter. |
| 24 | |
| 25 | Only the first equals sign in a parameter is significant. Whitespace before |
| 26 | or after the first equals sign is discarded. Leading, trailing and internal |
| 27 | whitespace in module and parameter names is irrelevant. Leading and |
| 28 | trailing whitespace in a parameter value is discarded. Internal whitespace |
| 29 | within a parameter value is retained verbatim. |
| 30 | |
| 31 | Any line beginning with a hash (#) is ignored, as are lines containing |
| 32 | only whitespace. |
| 33 | |
| 34 | Any line ending in a \ is "continued" on the next line in the |
| 35 | customary UNIX fashion. |
| 36 | |
| 37 | The values following the equals sign in parameters are all either a string |
| 38 | (no quotes needed) or a boolean, which may be given as yes/no, 0/1 or |
| 39 | true/false. Case is not significant in boolean values, but is preserved |
| 40 | in string values. |
| 41 | |
| 42 | manpagesection(LAUNCHING THE RSYNC DAEMON) |
| 43 | |
| 44 | The rsync daemon is launched by specifying the bf(--daemon) option to |
| 45 | rsync. |
| 46 | |
| 47 | The daemon must run with root privileges if you wish to use chroot, to |
| 48 | bind to a port numbered under 1024 (as is the default 873), or to set |
| 49 | file ownership. Otherwise, it must just have permission to read and |
| 50 | write the appropriate data, log, and lock files. |
| 51 | |
| 52 | You can launch it either via inetd, as a stand-alone daemon, or from |
| 53 | an rsync client via a remote shell. If run as a stand-alone daemon then |
| 54 | just run the command "bf(rsync --daemon)" from a suitable startup script. |
| 55 | If run from an rsync client via a remote shell (by specifying both the |
| 56 | bf(--rsh) (bf(-e)) option and daemon mode with "::" or "rsync://"), the bf(--daemon) |
| 57 | option is automatically passed to the remote side. |
| 58 | |
| 59 | When run via inetd you should add a line like this to /etc/services: |
| 60 | |
| 61 | verb( rsync 873/tcp) |
| 62 | |
| 63 | and a single line something like this to /etc/inetd.conf: |
| 64 | |
| 65 | verb( rsync stream tcp nowait root /usr/bin/rsync rsyncd --daemon) |
| 66 | |
| 67 | Replace "/usr/bin/rsync" with the path to where you have rsync installed on |
| 68 | your system. You will then need to send inetd a HUP signal to tell it to |
| 69 | reread its config file. |
| 70 | |
| 71 | Note that you should bf(not) send the rsync daemon a HUP signal to force |
| 72 | it to reread the tt(rsyncd.conf) file. The file is re-read on each client |
| 73 | connection. |
| 74 | |
| 75 | manpagesection(GLOBAL OPTIONS) |
| 76 | |
| 77 | The first parameters in the file (before a [module] header) are the |
| 78 | global parameters. |
| 79 | |
| 80 | You may also include any module parameters in the global part of the |
| 81 | config file in which case the supplied value will override the |
| 82 | default for that parameter. |
| 83 | |
| 84 | startdit() |
| 85 | dit(bf(motd file)) The "motd file" option allows you to specify a |
| 86 | "message of the day" to display to clients on each connect. This |
| 87 | usually contains site information and any legal notices. The default |
| 88 | is no motd file. |
| 89 | |
| 90 | dit(bf(log file)) The "log file" option tells the rsync daemon to log |
| 91 | messages to that file rather than using syslog. This is particularly |
| 92 | useful on systems (such as AIX) where syslog() doesn't work for |
| 93 | chrooted programs. If the daemon fails to open to specified file, it |
| 94 | will fall back to using syslog and output an error about the failure. |
| 95 | (Note that a failure to open the specified log file used to be a fatal |
| 96 | error.) |
| 97 | |
| 98 | dit(bf(pid file)) The "pid file" option tells the rsync daemon to write |
| 99 | its process ID to that file. |
| 100 | |
| 101 | dit(bf(syslog facility)) The "syslog facility" option allows you to |
| 102 | specify the syslog facility name to use when logging messages from the |
| 103 | rsync daemon. You may use any standard syslog facility name which is |
| 104 | defined on your system. Common names are auth, authpriv, cron, daemon, |
| 105 | ftp, kern, lpr, mail, news, security, syslog, user, uucp, local0, |
| 106 | local1, local2, local3, local4, local5, local6 and local7. The default |
| 107 | is daemon. |
| 108 | |
| 109 | dit(bf(port)) You can override the default port the daemon will listen on |
| 110 | by specifying this value (defaults to 873). This is ignored if the daemon |
| 111 | is being run by inetd, and is superseded by the bf(--port) command-line option. |
| 112 | |
| 113 | dit(bf(address)) You can override the default IP address the daemon |
| 114 | will listen on by specifying this value. This is ignored if the daemon is |
| 115 | being run by inetd, and is superseded by the bf(--address) command-line option. |
| 116 | |
| 117 | dit(bf(socket options)) This option can provide endless fun for people |
| 118 | who like to tune their systems to the utmost degree. You can set all |
| 119 | sorts of socket options which may make transfers faster (or |
| 120 | slower!). Read the man page for the setsockopt() system call for |
| 121 | details on some of the options you may be able to set. By default no |
| 122 | special socket options are set. |
| 123 | |
| 124 | enddit() |
| 125 | |
| 126 | |
| 127 | manpagesection(MODULE OPTIONS) |
| 128 | |
| 129 | After the global options you should define a number of modules, each |
| 130 | module exports a directory tree as a symbolic name. Modules are |
| 131 | exported by specifying a module name in square brackets [module] |
| 132 | followed by the options for that module. |
| 133 | |
| 134 | startdit() |
| 135 | |
| 136 | dit(bf(comment)) The "comment" option specifies a description string |
| 137 | that is displayed next to the module name when clients obtain a list |
| 138 | of available modules. The default is no comment. |
| 139 | |
| 140 | dit(bf(path)) The "path" option specifies the directory in the daemon's |
| 141 | filesystem to make available in this module. You must specify this option |
| 142 | for each module in tt(rsyncd.conf). |
| 143 | |
| 144 | dit(bf(use chroot)) If "use chroot" is true, the rsync daemon will chroot |
| 145 | to the "path" before starting the file transfer with the client. This has |
| 146 | the advantage of extra protection against possible implementation security |
| 147 | holes, but it has the disadvantages of requiring super-user privileges, |
| 148 | of not being able to follow symbolic links that are either absolute or outside |
| 149 | of the new root path, and of complicating the preservation of usernames and groups |
| 150 | (see below). When "use chroot" is false, for security reasons, |
| 151 | symlinks may only be relative paths pointing to other files within the root |
| 152 | path, and leading slashes are removed from most absolute paths (options |
| 153 | such as bf(--backup-dir), bf(--compare-dest), etc. interpret an absolute path as |
| 154 | rooted in the module's "path" dir, just as if chroot was specified). |
| 155 | The default for "use chroot" is true. |
| 156 | |
| 157 | In order to preserve usernames and groupnames, rsync needs to be able to |
| 158 | use the standard library functions for looking up names and IDs (i.e. |
| 159 | getpwuid(), getgrgid(), getpwname(), and getgrnam()). This means a |
| 160 | process in the chroot namespace will need to have access to the resources |
| 161 | used by these library functions (traditionally /etc/passwd and |
| 162 | /etc/group). If these resources are not available, rsync will only be |
| 163 | able to copy the IDs, just as if the bf(--numeric-ids) option had been |
| 164 | specified. |
| 165 | |
| 166 | Note that you are free to setup user/group information in the chroot area |
| 167 | differently from your normal system. For example, you could abbreviate |
| 168 | the list of users and groups. Also, you can protect this information from |
| 169 | being downloaded/uploaded by adding an exclude rule to the rsync.conf file |
| 170 | (e.g. "exclude = /etc/**"). Note that having the exclusion affect uploads |
| 171 | is a relatively new feature in rsync, so make sure your daemon is |
| 172 | at least 2.6.3 to effect this. Also note that it is safest to exclude a |
| 173 | directory and all its contents combining the rule "/some/dir/" with the |
| 174 | rule "/some/dir/**" just to be sure that rsync will not allow deeper |
| 175 | access to some of the excluded files inside the directory (rsync tries to |
| 176 | do this automatically, but you might as well specify both to be extra |
| 177 | sure). |
| 178 | |
| 179 | dit(bf(max connections)) The "max connections" option allows you to |
| 180 | specify the maximum number of simultaneous connections you will allow. |
| 181 | Any clients connecting when the maximum has been reached will receive a |
| 182 | message telling them to try later. The default is 0 which means no limit. |
| 183 | See also the "lock file" option. |
| 184 | |
| 185 | dit(bf(max verbosity)) The "max verbosity" option allows you to control |
| 186 | the maximum amount of verbose information that you'll allow the daemon to |
| 187 | generate (since the information goes into the log file). The default is 1, |
| 188 | which allows the client to request one level of verbosity. |
| 189 | |
| 190 | dit(bf(lock file)) The "lock file" option specifies the file to use to |
| 191 | support the "max connections" option. The rsync daemon uses record |
| 192 | locking on this file to ensure that the max connections limit is not |
| 193 | exceeded for the modules sharing the lock file. |
| 194 | The default is tt(/var/run/rsyncd.lock). |
| 195 | |
| 196 | dit(bf(read only)) The "read only" option determines whether clients |
| 197 | will be able to upload files or not. If "read only" is true then any |
| 198 | attempted uploads will fail. If "read only" is false then uploads will |
| 199 | be possible if file permissions on the daemon side allow them. The default |
| 200 | is for all modules to be read only. |
| 201 | |
| 202 | dit(bf(write only)) The "write only" option determines whether clients |
| 203 | will be able to download files or not. If "write only" is true then any |
| 204 | attempted downloads will fail. If "write only" is false then downloads |
| 205 | will be possible if file permissions on the daemon side allow them. The |
| 206 | default is for this option to be disabled. |
| 207 | |
| 208 | dit(bf(list)) The "list" option determines if this module should be |
| 209 | listed when the client asks for a listing of available modules. By |
| 210 | setting this to false you can create hidden modules. The default is |
| 211 | for modules to be listable. |
| 212 | |
| 213 | dit(bf(uid)) The "uid" option specifies the user name or user ID that |
| 214 | file transfers to and from that module should take place as when the daemon |
| 215 | was run as root. In combination with the "gid" option this determines what |
| 216 | file permissions are available. The default is uid -2, which is normally |
| 217 | the user "nobody". |
| 218 | |
| 219 | dit(bf(gid)) The "gid" option specifies the group name or group ID that |
| 220 | file transfers to and from that module should take place as when the daemon |
| 221 | was run as root. This complements the "uid" option. The default is gid -2, |
| 222 | which is normally the group "nobody". |
| 223 | |
| 224 | dit(bf(filter)) The "filter" option allows you to specify a space-separated |
| 225 | list of filter rules that the daemon will not allow to be read or written. |
| 226 | This is only superficially equivalent to the client specifying these |
| 227 | patterns with the bf(--filter) option. Only one "filter" option may be |
| 228 | specified, but it may contain as many rules as you like, including |
| 229 | merge-file rules. Note that per-directory merge-file rules do not provide |
| 230 | as much protection as global rules, but they can be used to make bf(--delete) |
| 231 | work better when a client downloads the daemon's files (if the per-dir |
| 232 | merge files are included in the transfer). |
| 233 | |
| 234 | dit(bf(exclude)) The "exclude" option allows you to specify a |
| 235 | space-separated list of patterns that the daemon will not allow to be read |
| 236 | or written. This is only superficially equivalent to the client |
| 237 | specifying these patterns with the bf(--exclude) option. Only one "exclude" |
| 238 | option may be specified, but you can use "-" and "+" before patterns to |
| 239 | specify exclude/include. |
| 240 | |
| 241 | Because this exclude list is not passed to the client it only applies on |
| 242 | the daemon: that is, it excludes files received by a client when receiving |
| 243 | from a daemon and files deleted on a daemon when sending to a daemon, but |
| 244 | it doesn't exclude files from being deleted on a client when receiving |
| 245 | from a daemon. |
| 246 | |
| 247 | dit(bf(exclude from)) The "exclude from" option specifies a filename |
| 248 | on the daemon that contains exclude patterns, one per line. |
| 249 | This is only superficially equivalent |
| 250 | to the client specifying the bf(--exclude-from) option with an equivalent file. |
| 251 | See the "exclude" option above. |
| 252 | |
| 253 | dit(bf(include)) The "include" option allows you to specify a |
| 254 | space-separated list of patterns which rsync should not exclude. This is |
| 255 | only superficially equivalent to the client specifying these patterns with |
| 256 | the bf(--include) option because it applies only on the daemon. This is |
| 257 | useful as it allows you to build up quite complex exclude/include rules. |
| 258 | Only one "include" option may be specified, but you can use "+" and "-" |
| 259 | before patterns to switch include/exclude. See the "exclude" option |
| 260 | above. |
| 261 | |
| 262 | dit(bf(include from)) The "include from" option specifies a filename |
| 263 | on the daemon that contains include patterns, one per line. This is |
| 264 | only superficially equivalent to the client specifying the |
| 265 | bf(--include-from) option with a equivalent file. |
| 266 | See the "exclude" option above. |
| 267 | |
| 268 | dit(bf(auth users)) The "auth users" option specifies a comma and |
| 269 | space-separated list of usernames that will be allowed to connect to |
| 270 | this module. The usernames do not need to exist on the local |
| 271 | system. The usernames may also contain shell wildcard characters. If |
| 272 | "auth users" is set then the client will be challenged to supply a |
| 273 | username and password to connect to the module. A challenge response |
| 274 | authentication protocol is used for this exchange. The plain text |
| 275 | usernames are passwords are stored in the file specified by the |
| 276 | "secrets file" option. The default is for all users to be able to |
| 277 | connect without a password (this is called "anonymous rsync"). |
| 278 | |
| 279 | See also the "CONNECTING TO AN RSYNC DAEMON OVER A REMOTE SHELL |
| 280 | PROGRAM" section in rsync(1) for information on how handle an |
| 281 | rsyncd.conf-level username that differs from the remote-shell-level |
| 282 | username when using a remote shell to connect to an rsync daemon. |
| 283 | |
| 284 | dit(bf(secrets file)) The "secrets file" option specifies the name of |
| 285 | a file that contains the username:password pairs used for |
| 286 | authenticating this module. This file is only consulted if the "auth |
| 287 | users" option is specified. The file is line based and contains |
| 288 | username:password pairs separated by a single colon. Any line starting |
| 289 | with a hash (#) is considered a comment and is skipped. The passwords |
| 290 | can contain any characters but be warned that many operating systems |
| 291 | limit the length of passwords that can be typed at the client end, so |
| 292 | you may find that passwords longer than 8 characters don't work. |
| 293 | |
| 294 | There is no default for the "secrets file" option, you must choose a name |
| 295 | (such as tt(/etc/rsyncd.secrets)). The file must normally not be readable |
| 296 | by "other"; see "strict modes". |
| 297 | |
| 298 | dit(bf(strict modes)) The "strict modes" option determines whether or not |
| 299 | the permissions on the secrets file will be checked. If "strict modes" is |
| 300 | true, then the secrets file must not be readable by any user ID other |
| 301 | than the one that the rsync daemon is running under. If "strict modes" is |
| 302 | false, the check is not performed. The default is true. This option |
| 303 | was added to accommodate rsync running on the Windows operating system. |
| 304 | |
| 305 | dit(bf(hosts allow)) The "hosts allow" option allows you to specify a |
| 306 | list of patterns that are matched against a connecting clients |
| 307 | hostname and IP address. If none of the patterns match then the |
| 308 | connection is rejected. |
| 309 | |
| 310 | Each pattern can be in one of five forms: |
| 311 | |
| 312 | quote(itemize( |
| 313 | it() a dotted decimal IPv4 address of the form a.b.c.d, or an IPv6 address |
| 314 | of the form a:b:c::d:e:f. In this case the incoming machine's IP address |
| 315 | must match exactly. |
| 316 | it() an address/mask in the form ipaddr/n where ipaddr is the IP address |
| 317 | and n is the number of one bits in the netmask. All IP addresses which |
| 318 | match the masked IP address will be allowed in. |
| 319 | it() an address/mask in the form ipaddr/maskaddr where ipaddr is the |
| 320 | IP address and maskaddr is the netmask in dotted decimal notation for IPv4, |
| 321 | or similar for IPv6, e.g. ffff:ffff:ffff:ffff:: instead of /64. All IP |
| 322 | addresses which match the masked IP address will be allowed in. |
| 323 | it() a hostname. The hostname as determined by a reverse lookup will |
| 324 | be matched (case insensitive) against the pattern. Only an exact |
| 325 | match is allowed in. |
| 326 | it() a hostname pattern using wildcards. These are matched using the |
| 327 | same rules as normal unix filename matching. If the pattern matches |
| 328 | then the client is allowed in. |
| 329 | )) |
| 330 | |
| 331 | Note IPv6 link-local addresses can have a scope in the address specification: |
| 332 | |
| 333 | quote( |
| 334 | tt( fe80::1%link1)nl() |
| 335 | tt( fe80::%link1/64)nl() |
| 336 | tt( fe80::%link1/ffff:ffff:ffff:ffff::)nl() |
| 337 | ) |
| 338 | |
| 339 | You can also combine "hosts allow" with a separate "hosts deny" |
| 340 | option. If both options are specified then the "hosts allow" option s |
| 341 | checked first and a match results in the client being able to |
| 342 | connect. The "hosts deny" option is then checked and a match means |
| 343 | that the host is rejected. If the host does not match either the |
| 344 | "hosts allow" or the "hosts deny" patterns then it is allowed to |
| 345 | connect. |
| 346 | |
| 347 | The default is no "hosts allow" option, which means all hosts can connect. |
| 348 | |
| 349 | dit(bf(hosts deny)) The "hosts deny" option allows you to specify a |
| 350 | list of patterns that are matched against a connecting clients |
| 351 | hostname and IP address. If the pattern matches then the connection is |
| 352 | rejected. See the "hosts allow" option for more information. |
| 353 | |
| 354 | The default is no "hosts deny" option, which means all hosts can connect. |
| 355 | |
| 356 | dit(bf(ignore errors)) The "ignore errors" option tells rsyncd to |
| 357 | ignore I/O errors on the daemon when deciding whether to run the delete |
| 358 | phase of the transfer. Normally rsync skips the bf(--delete) step if any |
| 359 | I/O errors have occurred in order to prevent disastrous deletion due |
| 360 | to a temporary resource shortage or other I/O error. In some cases this |
| 361 | test is counter productive so you can use this option to turn off this |
| 362 | behavior. |
| 363 | |
| 364 | dit(bf(ignore nonreadable)) This tells the rsync daemon to completely |
| 365 | ignore files that are not readable by the user. This is useful for |
| 366 | public archives that may have some non-readable files among the |
| 367 | directories, and the sysadmin doesn't want those files to be seen at all. |
| 368 | |
| 369 | dit(bf(transfer logging)) The "transfer logging" option enables per-file |
| 370 | logging of downloads and uploads in a format somewhat similar to that |
| 371 | used by ftp daemons. The daemon always logs the transfer at the end, so |
| 372 | if a transfer is aborted, no mention will be made in the log file. |
| 373 | |
| 374 | If you want to customize the log lines, see the "log format" option. |
| 375 | |
| 376 | dit(bf(log format)) The "log format" option allows you to specify the |
| 377 | format used for logging file transfers when transfer logging is enabled. |
| 378 | The format is a text string containing embedded single-character escape |
| 379 | sequences prefixed with a percent (%) character. An optional numeric |
| 380 | field width may also be specified between the percent and the escape |
| 381 | letter (e.g. "%-50n %8l %07p"). |
| 382 | |
| 383 | The default log format is "%o %h [%a] %m (%u) %f %l", and a "%t [%p] " |
| 384 | is always prefixed when using the "log file" option. |
| 385 | (A perl script that will summarize this default log format is included |
| 386 | in the rsync source code distribution in the "support" subdirectory: |
| 387 | rsyncstats.) |
| 388 | |
| 389 | The single-character escapes that are understood are as follows: |
| 390 | |
| 391 | quote(itemize( |
| 392 | it() %h for the remote host name |
| 393 | it() %a for the remote IP address |
| 394 | it() %l for the length of the file in bytes |
| 395 | it() %p for the process ID of this rsync session |
| 396 | it() %o for the operation, which is "send", "recv", or "del." |
| 397 | (the latter includes the trailing period) |
| 398 | it() %f for the filename (long form on sender; no trailing "/") |
| 399 | it() %n for the filename (short form; trailing "/" on dir) |
| 400 | it() %L either the string " -> SYMLINK", or " => HARDLINK" or an |
| 401 | empty string (where bf(SYMLINK) or bf(HARDLINK) is a filename) |
| 402 | it() %P for the module path |
| 403 | it() %m for the module name |
| 404 | it() %t for the current date time |
| 405 | it() %u for the authenticated username (or the null string) |
| 406 | it() %b for the number of bytes actually transferred |
| 407 | it() %c when sending files this gives the number of checksum bytes |
| 408 | received for this file |
| 409 | it() %i an itemized list of what is being updated |
| 410 | )) |
| 411 | |
| 412 | For a list of what the characters mean that are output by "%i", see the |
| 413 | bf(--itemize-changes) option in the rsync manpage. |
| 414 | |
| 415 | Note that some of the logged output changes when talking with older |
| 416 | rsync versions. For instance, deleted files were only output as verbose |
| 417 | messages prior to rsync 2.6.4. |
| 418 | |
| 419 | dit(bf(timeout)) The "timeout" option allows you to override the |
| 420 | clients choice for I/O timeout for this module. Using this option you |
| 421 | can ensure that rsync won't wait on a dead client forever. The timeout |
| 422 | is specified in seconds. A value of zero means no timeout and is the |
| 423 | default. A good choice for anonymous rsync daemons may be 600 (giving |
| 424 | a 10 minute timeout). |
| 425 | |
| 426 | dit(bf(refuse options)) The "refuse options" option allows you to |
| 427 | specify a space-separated list of rsync command line options that will |
| 428 | be refused by your rsync daemon. |
| 429 | You may specify the full option name, its one-letter abbreviation, or a |
| 430 | wild-card string that matches multiple options. |
| 431 | For example, this would refuse bf(--checksum) (bf(-c)) and all the various |
| 432 | delete options: |
| 433 | |
| 434 | quote(tt( refuse options = c delete)) |
| 435 | |
| 436 | The reason the above refuses all delete options is that the options imply |
| 437 | bf(--delete), and implied options are refused just like explicit options. |
| 438 | As an additional safety feature, the refusal of "delete" also refuses |
| 439 | bf(remove-sent-files) when the daemon is the sender; if you want the latter |
| 440 | without the former, instead refuse "delete-*" -- that refuses all the |
| 441 | delete modes without affecting bf(--remove-sent-files). |
| 442 | |
| 443 | When an option is refused, the daemon prints an error message and exits. |
| 444 | To prevent all compression, you can use "dont compress = *" (see below) |
| 445 | instead of "refuse options = compress" to avoid returning an error to a |
| 446 | client that requests compression. |
| 447 | |
| 448 | dit(bf(dont compress)) The "dont compress" option allows you to select |
| 449 | filenames based on wildcard patterns that should not be compressed |
| 450 | during transfer. Compression is expensive in terms of CPU usage so it |
| 451 | is usually good to not try to compress files that won't compress well, |
| 452 | such as already compressed files. |
| 453 | |
| 454 | The "dont compress" option takes a space-separated list of |
| 455 | case-insensitive wildcard patterns. Any source filename matching one |
| 456 | of the patterns will not be compressed during transfer. |
| 457 | |
| 458 | The default setting is tt(*.gz *.tgz *.zip *.z *.rpm *.deb *.iso *.bz2 *.tbz) |
| 459 | |
| 460 | enddit() |
| 461 | |
| 462 | manpagesection(AUTHENTICATION STRENGTH) |
| 463 | |
| 464 | The authentication protocol used in rsync is a 128 bit MD4 based |
| 465 | challenge response system. Although I believe that no one has ever |
| 466 | demonstrated a brute-force break of this sort of system you should |
| 467 | realize that this is not a "military strength" authentication system. |
| 468 | It should be good enough for most purposes but if you want really top |
| 469 | quality security then I recommend that you run rsync over ssh. |
| 470 | |
| 471 | Also note that the rsync daemon protocol does not currently provide any |
| 472 | encryption of the data that is transferred over the connection. Only |
| 473 | authentication is provided. Use ssh as the transport if you want |
| 474 | encryption. |
| 475 | |
| 476 | Future versions of rsync may support SSL for better authentication and |
| 477 | encryption, but that is still being investigated. |
| 478 | |
| 479 | manpagesection(RUNNING AN RSYNC DAEMON OVER A REMOTE SHELL PROGRAM) |
| 480 | |
| 481 | If rsync is run with both the bf(--daemon) and bf(--rsh) (bf(-e)) options, it will |
| 482 | spawn an rsync daemon using a remote shell connection. Several |
| 483 | configuration options will not be available unless the remote user is |
| 484 | root (e.g. chroot, setuid/setgid, etc.). There is no need to configure |
| 485 | inetd or the services map to include the rsync daemon port if you run an |
| 486 | rsync daemon only via a remote shell program. |
| 487 | |
| 488 | ADVANCED: To run an rsync daemon out of a single-use ssh key, use the |
| 489 | "command=em(COMMAND)" syntax in the remote user's authorized_keys entry, |
| 490 | where command would be |
| 491 | |
| 492 | quote(tt(rsync --server --daemon .)) |
| 493 | |
| 494 | NOTE: rsync's argument parsing expects the trailing ".", so make sure |
| 495 | that it's there. If you want to use an rsyncd.conf(5)-style |
| 496 | configuration file other than the default, you can added a |
| 497 | bf(--config) option to the em(command): |
| 498 | |
| 499 | quote(tt(rsync --server --daemon --config=em(file) .)) |
| 500 | |
| 501 | Note that the "--server" here is the internal option that rsync uses to |
| 502 | run the remote version of rsync that it communicates with, and thus you |
| 503 | should not be using the bf(--server) option under normal circumstances. |
| 504 | |
| 505 | manpagesection(EXAMPLES) |
| 506 | |
| 507 | A simple rsyncd.conf file that allow anonymous rsync to a ftp area at |
| 508 | tt(/home/ftp) would be: |
| 509 | |
| 510 | verb( |
| 511 | [ftp] |
| 512 | path = /home/ftp |
| 513 | comment = ftp export area |
| 514 | ) |
| 515 | |
| 516 | A more sophisticated example would be: |
| 517 | |
| 518 | verb( |
| 519 | uid = nobody |
| 520 | gid = nobody |
| 521 | use chroot = no |
| 522 | max connections = 4 |
| 523 | syslog facility = local5 |
| 524 | pid file = /var/run/rsyncd.pid |
| 525 | |
| 526 | [ftp] |
| 527 | path = /var/ftp/pub |
| 528 | comment = whole ftp area (approx 6.1 GB) |
| 529 | |
| 530 | [sambaftp] |
| 531 | path = /var/ftp/pub/samba |
| 532 | comment = Samba ftp area (approx 300 MB) |
| 533 | |
| 534 | [rsyncftp] |
| 535 | path = /var/ftp/pub/rsync |
| 536 | comment = rsync ftp area (approx 6 MB) |
| 537 | |
| 538 | [sambawww] |
| 539 | path = /public_html/samba |
| 540 | comment = Samba WWW pages (approx 240 MB) |
| 541 | |
| 542 | [cvs] |
| 543 | path = /data/cvs |
| 544 | comment = CVS repository (requires authentication) |
| 545 | auth users = tridge, susan |
| 546 | secrets file = /etc/rsyncd.secrets |
| 547 | ) |
| 548 | |
| 549 | The /etc/rsyncd.secrets file would look something like this: |
| 550 | |
| 551 | quote( |
| 552 | tt(tridge:mypass)nl() |
| 553 | tt(susan:herpass)nl() |
| 554 | ) |
| 555 | |
| 556 | manpagefiles() |
| 557 | |
| 558 | /etc/rsyncd.conf or rsyncd.conf |
| 559 | |
| 560 | manpageseealso() |
| 561 | |
| 562 | rsync(1) |
| 563 | |
| 564 | manpagediagnostics() |
| 565 | |
| 566 | manpagebugs() |
| 567 | |
| 568 | Please report bugs! The rsync bug tracking system is online at |
| 569 | url(http://rsync.samba.org/)(http://rsync.samba.org/) |
| 570 | |
| 571 | manpagesection(VERSION) |
| 572 | |
| 573 | This man page is current for version 2.6.5pre2 of rsync. |
| 574 | |
| 575 | manpagesection(CREDITS) |
| 576 | |
| 577 | rsync is distributed under the GNU public license. See the file |
| 578 | COPYING for details. |
| 579 | |
| 580 | The primary ftp site for rsync is |
| 581 | url(ftp://rsync.samba.org/pub/rsync)(ftp://rsync.samba.org/pub/rsync). |
| 582 | |
| 583 | A WEB site is available at |
| 584 | url(http://rsync.samba.org/)(http://rsync.samba.org/) |
| 585 | |
| 586 | We would be delighted to hear from you if you like this program. |
| 587 | |
| 588 | This program uses the zlib compression library written by Jean-loup |
| 589 | Gailly and Mark Adler. |
| 590 | |
| 591 | manpagesection(THANKS) |
| 592 | |
| 593 | Thanks to Warren Stanley for his original idea and patch for the rsync |
| 594 | daemon. Thanks to Karsten Thygesen for his many suggestions and |
| 595 | documentation! |
| 596 | |
| 597 | manpageauthor() |
| 598 | |
| 599 | rsync was written by Andrew Tridgell and Paul Mackerras. |
| 600 | Many people have later contributed to it. |
| 601 | |
| 602 | Mailing lists for support and development are available at |
| 603 | url(http://lists.samba.org)(lists.samba.org) |