Re: How do I move an account... A few more details... and more

• Previous message: Michael J. Pawlowsky: "Logical Volumes Pernissions (Post #2)"
• In reply to: Peter Arremann: "Re: How do I move an account... A few more details... and more"
• Next in thread: Jorge Fábregas: "Re: Is THIS VNC?"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Date: Wed, 29 Dec 2004 09:28:45 -0800
To: For users of Fedora Core releases <fedora-list@redhat.com>

Peter,
Again thank you. It will be a few days before I will get to do all of
this. Let you know how it goes.

Sorry about the CC. I am new at this, did not know.

Get your toes warm,
Don

At 11:01 PM 12/28/2004, you wrote:
>On Wednesday 29 December 2004 01:09, Don wrote:
> > Peter,
> > Thanks for the verbose answer, I needed that.
> >
> > This info is great... Thanks again.
> >
> > I got the message about copying the lines.
> >
> > After I accomplish this, I will install FC3 into my RH7.2 I would like to
> > use this system as a backup system if the first ever goes down. Can you
> > point me in a direction for this. It sounds like I might be able to use
> > rsync for this. Do you know of any how to docs to run to machines in
> > parallel?
> > Don
>Don,
>
>sounds like I can congratulate you to reaching the first level of paranoia ;)
>
>Seriously, I'm doing something similar. I have a server with 3 mirror raid 1,
>tape onsite and DVD-R offsite backups (that' what they call paranoia level 6
>I was told ;) and I still keep a spare machine around with all the home
>directories and some other file systems sync'd to it.
>
>To set that up, you'll have to do a few steps but its not that difficult. I
>assume that the hostname for the system you're trying to backup is called
>serv1 and the system you back up to is fs. I also assume you're initiating
>the backup from serv1 - you can do it the other way around too if you want,
>it doesn't really matter, then just run the instructions the other way round.
>
>1) set up ssh to allow you login without password. I've had some people tell
>me its a security hole, but how else do you automate the backup? To do that,
>you need to login on serv1 with an account that has permissions to read all
>files you want to back up. Usually that will be root. Then you run (if you
>have not done that before) ssh-keygen -t dsa. That will generate you dsa keys
>(saving them in the suggested default location is a good idea). Then copy the
>public key (a file called id_dsa.pub) to the backup server fs. Login there as
>root (needed to create files owned by people other than you) and then (if you
>haven't done that blah blah) create a directory called .ssh in the home
>directory of root. Make sure the permissions are 600 on that directory
>(security reasons). Then move the id_dsa.pub file you generated on serv1
>to /root/.ssh/authorized_keys (if the file already exists, append the key to
>it) and make sure that file too has 600 permissions. Once you have done that,
>go back to serv1 and try login with ssh - it should let you in without a
>password.
>
>2) once you set that up you need to figure out where you want to make your
>backup files to. I have a separate filesystem mounted as /backup/serv1-home
>but you can sync directly to /home if you want to. Make sure you got enough
>disk space. Then go back to serv1 and create youself a shell script with an
>rsync script. For me, my script looks a lot like that:
>
>#!/bin/bash
>rsync --delete -av -e ssh /home fs:/backup/serv1-home
>x=$?
>if [ $x -ne 0 ] ; then
> echo "Backup Failed";
>else
> echo "Backup Completed";
>fi
>exit $x
>
>Yes, I know there are few things you can improve there but I removed a ton of
>stuff I didn't need to show the basic concept. What it does is execute rsync
>through ssh (for the rest of the switches, please refer to the man page - too
>lazy to explain it all, its almost 2am and my toes are cold)
>
>You should be able to execute that script and it should make the first
>copy of
>the data. Verify that everything went ok and then run the script a few times
>and measure the wallclock time it takes... That should show you how often you
>can make the backup. If its a local network and not much going on on the
>systems, then once a hour should be fine, otherwise once a day would be
>good...
>
>3) Once you can run that scriptlet by hand without problems, you can make a
>symbolic link from /etc/cron.hourly (or .daily) to your script - and you
>should be all set. You might want to remove the -v from the rsync then as
>well and also remove the echo for backup complete - that way you will only
>get an email output of your cron job if there were any errors with the
>backup...
>
>Hope that helps - its fairly straight forward... If you want to do a true
>sync
>(where you can run both boxes at the same time) you'll need something like
>gfs with shared storage and so on - way more effort and difficulty than it is
>worth...
>
>Peter.
>
>PS: Many people consider it bad manners if you CC them on responses to the
>list - that way I get 2 copies of the email, one in the mailing list folder
>and one in my inbox...
>
>--
>fedora-list mailing list
>fedora-list@redhat.com
>To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list

-- 
fedora-list mailing list
fedora-list@redhat.com
To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list

• Previous message: Michael J. Pawlowsky: "Logical Volumes Pernissions (Post #2)"
• In reply to: Peter Arremann: "Re: How do I move an account... A few more details... and more"
• Next in thread: Jorge Fábregas: "Re: Is THIS VNC?"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]