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Full Discussion: Rsync better use for backup
Top Forums Shell Programming and Scripting Rsync better use for backup Post 302787621 by hanson44 on Saturday 30th of March 2013 12:41:51 AM
Old 03-30-2013
Code:
also I want to know how useful is Crontab for these kinds of work. , or  can I make Crontab run when both machines are on at a particular point  of time in the day / week ?

crontab is obviously very useful, with two reservations.

Obviously, if the one of the machines is down, cron will not run. Smilie You could set up some mechanism to compensate for that (write a timestamp file, and check the file was created), but it would be a bother.

You could make the two machines run a job at the same time, but you would have to make sure the clocks are exactly the same. It's probably better to let one of them do it's think first, and then an hour or whatever later, let the other one. Or might be some way to do everything on one machine, and it runs a remote process on the other.
 

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SVN::Notify::Mirror::Rsync(3pm) 			User Contributed Perl Documentation			   SVN::Notify::Mirror::Rsync(3pm)

NAME
SVN::Notify::Mirror::Rsync - Mirror a repository path via Rsync SYNOPSIS
Use svnnotify in post-commit: svnnotify --repos-path "$1" --revision "$2" --handler Mirror::Rsync --to "/path/to/local/htdocs" [--svn-binary /full/path/to/svn] --rsync-host remote_server [--rsync-delete=[yes|no]] [--rsync-dest "/path/on/remote/server"] [--rsync-args arg1 [--rsync-args arg2...]] [[--rsync-ssh] [--ssh-user remote_user] [--ssh-identity /home/user/.ssh/id_rsa]] or better yet, use SVN::Notify::Config for a more sophisticated setup: #!/usr/bin/perl -MSVN::Notify::Config=$0 --- #YAML:1.0 '': PATH: "/usr/bin:/usr/local/bin" 'path/in/repository': handler: Mirror to: "/path/to/www/htdocs" 'some/other/path/in/repository': handler: Mirror to: "/path/to/local/www/htdocs" rsync-host: "remote_host" rsync-dest: "/path/on/remote/www/htdocs" ssh-user: "remote_user" ssh-identity: "/home/user/.ssh/id_rsa" DESCRIPTION
Keep a directory in sync with a portion of a Subversion repository. Typically used to keep a development web server in sync with the changes made to the repository. This directory can either be on the same box as the repository itself, or it can be remote (via SSH connection). USAGE
Depending on whether the target is a "Local Mirror" or a Remote Mirror, there are different options available. All options are available either as a commandline option to svnnotify or as a hash key in SVN::Notify::Config (see their respective documentation for more details). Working Copy on Local host Because 'svn export' is not able to be consistently updated, the local rsync'd directory must be a full working copy. The remote server will only contain the ordinary files (no Subversion admin files). The files in the working copy must be writeable (preferrably owned) by the user identity executing the hook script (this is the user identity that is running Apache or svnserve respectively). Local Mirror Please see " SVN::Notify::Mirror " for details. Remote Mirror Used for directories not located on the same machine as the repository itself. Typically, this might be a production web server located in a DMZ, so special consideration must be paid to security concerns. In particular, the remote mirror server may not be able to directly access the repository box. o rsync-host This value is required and must be the hostname or IP address of the remote host (where the mirror directories reside). o rsync-delete The default mode of operation is to delete remote files which are not present in the local working copy. NOTE: this will delete any unversioned files in the remote directory tree. Unless you have all of your files under version control, you should pass the "--no-rsync-delete" or "--rsync-delete no" option. o rsync-dest This optional value specifies the path to update on the remote host. If you do not specify this value, the same path as passed in as the "--to" parameter will be used (this may not be what you meant to do). o rsync-args This optional parameter can be used to pass additional commandline options to the rsync command. You can use this multiple times in order to pass multiple options. The default args are "--archive --compress". See the "rsync-ssh" options for using SSH instead of RSH (rather than pass those commands via "--rsync-args" o rsync-ssh This optional parameter signals that you wish to use SSH instead of whatever the default remote shell program is configured in your copy of rsync. You may need to set one or more of the "ssh-*" parameters as well. o ssh-user If the remote user is different than the local user executing the postcommit script, you can specify it with this parameter. You would often use this in conjunction with the next parameter. o ssh-identity This value may be optional and should be the full path to the local identity file being used to authenticate with the remote host. If you are setting the ssh-user to be something other than the local user name, you will typically also have to set the ssh-identity. AUTHOR
John Peacock <jpeacock@cpan.org> COPYRIGHT
Copyright (c) 2005-2008 John Peacock This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of the license can be found in the LICENSE file included with this module. SEE ALSO
SVN::Notify, SVN::Notify::Config, SVN::Notify::Mirror perl v5.14.2 2012-07-04 SVN::Notify::Mirror::Rsync(3pm)
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