2. I need to get the backups of all my machines. Do I need to create a /etc/amanda/Directory/amanda.conf for each of them ?
Usually, a single machine (the amanda "server") has the tape drive, and all other machines (amanda "clients") write their backups to the server. There is a single amanda.conf, on the server.
Ok, but if I put a lot of clients on 'disklists', Will amanda use one tape for each client ? It will runs all backups on the same time, ok ?
I runs a lot of clients at the same time. Each backup is collected in the holdingdisk. When some disklist entry is finished, it is queued to the program that puts each backup on tape. These backups are put on tape one after another on the same tape. So, no, amanda does not use one tape for each client.
backuped3. If I put 'dump cycle' to 5, the partition that will bebackuped,wil be divided by 5 and on each day 1/5 of the partition will be
ok ?
No. The partition will get a level 0 (full) dump once every 5 days, and incremental dumps the other days.
By the way, this is almost certainly not what you want. You probably want 'dumpcycle 1 week' and 'runspercycle 5'.
Sorry, but it sounds so confuse for me. I read the chapter about Amanda on "Essencial System Administration by Oreilly" and the author talk something about: Amanda divide the partition that will be backup and each day one part of the partition will be backup.
I can't find that passage in the book :-)
Explanation by example:
You have 10 clients, each with many disks, lets say 40 DiskListEntries in your disklist. It looks like:
myfirst.host.com / comp-root-tar
myfirst.host.com /home comp-user-tar
mysecond.host.com / comp-root-tar
mysecond.host.com /var comp-root-tar
mysecond.host.com /disk1 comp-user-tar
mysecond.host.com /bigdisk comp-user-tar
mythird.host.com / comp-root-tar
mythird.host.com /export/home comp-user-tar
..The total amount to backup is 100 Gbyte, and you have a runspercycle 5, than amanda tries to put about 20 Gbyte on a tape each run. After 5 days everything is put on tape at least once.
Amanda does this by choosing a number of DLE's each run. Those DLE's
get a full backup. All the other DLE's get an incremental backup.
Amanda chooses also which level of incremental backup.
On one day it chooses, myfirst.host.com:/home, and mysecond.host.com:/bigdisk. That bigdisk is so large you're already
having about 20 Gbyte with those two entries, so amanda decides
that's enough for today. All the rest will get an incremental backup,
including myfirst.host.com:/ and mysecond.host.com:/var.
The result is that you can restore everything up to the last run, and at the same time, the amount of work for each backup is leveled out over the x runs (5 in the example).
If you have only 1 disk to backup (one DLE), then of course, you're in the boundary case: you get 1 full backup of that DLE, and the other days, only an incremental backup.
What I need is do a full backup in one day and incrementals on the next days. So, I put 'dump cycle 7' and 'runs per cycle 5' for 1 day of full backup and 4 days for incrementals, Is it correct ?
Yes, as long as you realize that for one particular DLE, it is not always the first day that you get your full. Amanda spreads the full backups over all the tapes in one cycle.
I have a problem, last night Amanda send me a email about a backup but, the emails didn't have nothink. Something wrong ?
Double negative confuse me a lot. If they don't have nothing, the read the mail to see what's wrong. If you did receive an email, and the email was empty, then that's very strange. We need more info here. If you did not receive any mail at all, then something else is wrong in your setup. We need more info too.
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