Re: [gentoo-user] Disk Backup From One Machine To Another
On Wed, June 29, 2005 5:08 am, Ow Mun Heng said: I do, however, intend to test rdiff-backup later. ;) Well.. there is more than one way to skin the cat eh. I still think you should take a look at rsync. rdiff-backup uses librsync, so it only transfers the minimum necessary. Unlike rsync, it allows you to easily roll back to an older version of a file. Very useful when you realise you have screwed your configs just after a backup run. -- Neil Bothwick -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
On Wed, 2005-06-29 at 09:24 +0100, Neil Bothwick wrote: On Wed, June 29, 2005 5:08 am, Ow Mun Heng said: I do, however, intend to test rdiff-backup later. ;) Well.. there is more than one way to skin the cat eh. I still think you should take a look at rsync. rdiff-backup uses librsync, so it only transfers the minimum necessary. I do agree that rdiff-backup would be easier on the disk space. But my current practice is to sync all the changes into a tree that rotates every 7 days. (using the day before as a seed) This way, if bad things happen, I don't have to do the find full backup and apply the incrementals. Unlike rsync, it allows you to easily roll back to an older version of file. Very useful when you realise you have screwed your configs just after a backup run. BTW, librsync = rsync protocol/algo? Same thing? Please explain the roll back. it should be the same as with rsync No? -- Ow Mun Heng Gentoo/Linux on DELL D600 1.4Ghz 1.5GB RAM 98% Microsoft(tm) Free!! Neuromancer 16:41:20 up 1 day, 3:28, 4 users, load average: 1.10, 1.18, 0.92 -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
On Wed, 2005-06-29 at 10:16 +0100, Neil Bothwick wrote: On Wed, 29 Jun 2005 16:43:44 +0800, Ow Mun Heng wrote: Unlike rsync, it allows you to easily roll back to an older version of file. Very useful when you realise you have screwed your configs just after a backup run. BTW, librsync = rsync protocol/algo? Same thing? Please explain the roll back. it should be the same as with rsync No? No. rdiff-backup keeps a a backup plus diffs. You can roll back as far as you want just by specifying the age. rdiff-backup --restore-as-of 1D12h /backup/path/to/file will restore file to the version you used 36 hours ago. Wow.. That does seem interesting. (I presume this is if you do a backup every 12 hours?) When Does it do a Full backup? Check out the rdiff-backup web site, it gives several examples of how it can be used - http://www.nongnu.org/rdiff-backup/ Yep.. Thanks.. Will do once I get some I-net access. -- Ow Mun Heng Gentoo/Linux on DELL D600 1.4Ghz 1.5GB RAM 98% Microsoft(tm) Free!! Neuromancer 17:44:48 up 1 day, 4:31, 4 users, load average: 1.54, 1.27, 0.98 -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
I used to use rdiff-backup, I found it very satisfactory. But at one point I had a hard drive melt down, tried to do restore, mucked it up, ended up doing a full rebuild, pulling in configuration info from the backup files. There has to an easier way. Any suggestions on using rdiff-backup for a cold iron restore?? Bill Roberts On 11:14 Wed 29 Jun , Neil Bothwick wrote: On Wed, 29 Jun 2005 17:45:52 +0800, Ow Mun Heng wrote: rdiff-backup --restore-as-of 1D12h /backup/path/to/file will restore file to the version you used 36 hours ago. Wow.. That does seem interesting. (I presume this is if you do a backup every 12 hours?) You can do the backup as often or as frequently as you like. it will pick the version before the time to specify. When Does it do a Full backup? The first time you run it. But then each subsequent backup you do becomes the full one with the older files being the incrementals. Basically, it keeps a full mirror of the directory you backup, plus the information needed to reconstruct older or deleted files. -- Neil Bothwick God: What one human uses to persecute another. pgpBHAPOJvpju.pgp Description: PGP signature
Re: [gentoo-user] Disk Backup From One Machine To Another
On Wed, 29 Jun 2005 07:34:16 -0400, Bill Roberts wrote: I used to use rdiff-backup, I found it very satisfactory. But at one point I had a hard drive melt down, tried to do restore, mucked it up, ended up doing a full rebuild, pulling in configuration info from the backup files. There has to an easier way. Any suggestions on using rdiff-backup for a cold iron restore?? In that case, I'd just copy the entire backup directory back to the hard drive. I make squashfs archives of the backups each week and write them to a bootable DVD. If disaster strikes, I can boot fro the DVD, mount the backups and copy the files back to the hard drive. -- Neil Bothwick Kludge: (v., adj., or n.) to fix a program in the usual way. pgp7MhCEizhqD.pgp Description: PGP signature
Re: [gentoo-user] Disk Backup From One Machine To Another
On Wed, 2005-06-29 at 02:39 +, Raphael Melo de Oliveira Bastos Sales wrote: First of all, thanks for all who replied. It is the end of semester here, and I didn't have time (until now) to read all the posts. I have to admit, I made a newbie mistake when posting this message. I forgot to mention that I have Apache with SSL running. Thus, what I decided to do, was to create tar.bz2 files of backups, link them to an Apache directory, and download them from the machine that would receive the backup files. I feel this way I have to install no new software, gets the job done and let Apache take care of security. I do, however, intend to test rdiff-backup later. ;) Well.. there is more than one way to skin the cat eh. I still think you should take a look at rsync. -- Ow Mun Heng Gentoo/Linux on DELL D600 1.4Ghz 1.5GB RAM 98% Microsoft(tm) Free!! Neuromancer 12:08:17 up 22:55, 6 users, load average: 2.40, 2.27, 2.25 -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
Timo Boettcher wrote: Hi David, I would be very interested in this. Timo Timo (and everyone else) I've posted that script so you can use it, added some documentation. It's available here: http://www.edoceo.com/creo/remote-host-secure-backup.php /djb -- gentoo-user@gentoo.org mailing list
[gentoo-user] Disk Backup From One Machine To Another
Hi there, I have one machine (Machine 1) that I need backup its files periodically. I also have another machine (Machine 2) that will hold the backup. Machine 2 can see (make requests to) Machine 1, but the opposite isn't true. The network is covered by a firewall, so I don need a paranoid solution. I was thinking about doing the following: On Machine 1, put it on the crontab to put netcat waiting for requests, and when it did receive a request, dump the files. Like this: tar -jc / | nc -l -p 500 And on the crontab of Machine 2, I'd put something like this, only a few minutes later, to avoid any errors from clock differences: nc machine1 500 backup.tar.bz2 But before doing this, I'd like some suggestions or may be some better solutions you guys might know. Thanks for the attention, Raphael. -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
Use rsh to just pip data over with rsync? Use iptables to restrict rsh... On Fri, 24 Jun 2005, Raphael Melo de Oliveira Bastos Sales wrote: Hi there, I have one machine (Machine 1) that I need backup its files periodically. I also have another machine (Machine 2) that will hold the backup. Machine 2 can see (make requests to) Machine 1, but the opposite isn't true. The network is covered by a firewall, so I don need a paranoid solution. I was thinking about doing the following: On Machine 1, put it on the crontab to put netcat waiting for requests, and when it did receive a request, dump the files. Like this: tar -jc / | nc -l -p 500 And on the crontab of Machine 2, I'd put something like this, only a few minutes later, to avoid any errors from clock differences: nc machine1 500 backup.tar.bz2 But before doing this, I'd like some suggestions or may be some better solutions you guys might know. Thanks for the attention, Raphael. -- Bryan Whitehead Email:[EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
Raphael Melo de Oliveira Bastos Sales wrote: I have one machine (Machine 1) that I need backup its files periodically. I also have another machine (Machine 2) that will hold the backup. Machine 2 can see (make requests to) Machine 1, but the opposite isn't true. The network is covered by a firewall, so I don need a paranoid solution. I was thinking about doing the following: snip/snip Why not just do: rsync -zave ssh LiveBoxFolder [EMAIL PROTECTED]:/var/backup/LiveBox To avoid problems with ssh prompting for passwords, you copy the public key of the LiveBox account running the rsync (probably root) to the user home directory #cat root.publickey /home/user/.ssh/authorized_keys2 The benefit of rsync is that it only copies changes (so you can run backups more often), it is easy to get to the backed up files, you don't lose big chunks of data if your tarball gets a bad sector etc etc There is also a technique where rsync will give you daily incrementals with very little storage space loss (google for it). regards -- Charles Oertel FineBushPeople.net tel: 021 701 8231 fax: 021 701 3338 -=-=- ... A self-addressed envelope would be addressed 'envelope'. -=-=- -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
Hi Raphael, * Raphael Melo de Oliveira Bastos Sales [EMAIL PROTECTED], Friday, June 24, 2005, 8:27:02 PM: I have one machine (Machine 1) that I need backup its files periodically. I also have another machine (Machine 2) that will hold the backup. Machine 2 can see (make requests to) Machine 1, but the opposite isn't true. The network is covered by a firewall, so I don need a paranoid solution. I was thinking about doing the following: [strange idea involving netcat] But before doing this, I'd like some suggestions or may be some better solutions you guys might know. [...] Using netcat, you would send all your data, including the login passwords to your machine, its ssh-host-key and so on, unencrypted over your network. You don't want that, except when its a cross-cable and the machines are just some meters apart... Why not use ssh? From machine 2 you can ssh [EMAIL PROTECTED] cd /; tar --exclude=./proc --excluse=./sys -cz . | dd of=/backupfrommachine1.tgz With minor changes, you could use that in the other direction, too. cd /; tar --exclude=./proc --excluse=./sys -cz . | ssh [EMAIL PROTECTED] dd of=/backupfrommachine1.tgz HTH Timo -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] Disk Backup From One Machine To Another
On Fri, 24 Jun 2005 21:11:00 +0200, Charles Oertel wrote: There is also a technique where rsync will give you daily incrementals with very little storage space loss (google for it). That's what rdiff-backup does. -- Neil Bothwick IBM: Inferior But Marketable. pgpvRFZPIcXSq.pgp Description: PGP signature
Re: [gentoo-user] Disk Backup From One Machine To Another
* Raphael Melo de Oliveira Bastos Sales [EMAIL PROTECTED], Friday, June 24, 2005, 8:27:02 PM: I have one machine (Machine 1) that I need backup its files periodically. I also have another machine (Machine 2) that will hold the backup. Machine 2 can see (make requests to) Machine 1, but the opposite isn't true. The network is covered by a firewall, so I don need a paranoid solution. I was thinking about doing the following: I use a shell script that connects to my machines via ssh and performs commands to: 1. Backup Postgres with pg_dump 2. turn last weeks log files into tgz 3. rsync my /etc, /opt/edoceo (that's where I put my stuff) and other dirs I made it so that there is a config file that describes the backup as: host, db (yes/no), dir list. The machines are firewalled and the ssh is only allowed when signed by my trusted CA (me as well) so I feel pretty secure about it. Rsync allows me to throttle the connection to so I don't chew all my bandwidth on the backups. Let me know if you want a copy and I'll pull all my specifc stuffs out and post a copy. Cheers. /djb -- gentoo-user@gentoo.org mailing list
