Automated Backups With rdiff-backup

Discussion in 'Server Operation' started by Hans, Apr 10, 2006.

  1. Hans

    Hans Moderator ISPConfig Developer

    Sorry Falko, we did not understand each other:

    the text between --- and --- is according your how to.

    The line: "Note: this can not be done as user rdiff-backup !!" is my own experience, so i do not understand your line "With this command you become the user rdiff-backup on the shell. All the following commands must be run as user rdiff-backup!" within the how to.

    I have to mention this because i can not create file create the file /backup/.ssh/config not do it under user rdiff-backup.

    I think also that it is the reason that i have the result:

    ssh-rsa AAAAB3Nza[...]W1go9M= [email protected]

    in stead of:

    ssh-rsa AAAAB3Nza[...]W1go9M= [email protected]


    Hans
     
  2. falko

    falko Super Moderator ISPConfig Developer

    It is working for me like that. What's rdiff-backup's homedir? Is it /backup?
     
  3. Hans

    Hans Moderator ISPConfig Developer

    Yes Falko,

    That directory is /backup and is located on my backupserver backup.myhostingcompany.tld.

    Hans
     
  4. falko

    falko Super Moderator ISPConfig Developer

    What's the output of
    Code:
    ls -la /backup
    ?
     
  5. Hans

    Hans Moderator ISPConfig Developer

    Output of ls -la /backup

    backup:/home/admin# ls -la /backup
    total 28
    drwxr-xr-x 4 rdiff-backup rdiff-backup 4096 2006-04-12 20:10 .
    drwxr-xr-x 22 root root 4096 2006-04-10 21:03 ..
    -rw------- 1 rdiff-backup rdiff-backup 2797 2006-04-14 20:29 .bash_history
    -rw-r--r-- 1 rdiff-backup rdiff-backup 567 2006-04-10 21:03 .bash_profile
    -rw-r--r-- 1 rdiff-backup rdiff-backup 1834 2006-04-10 21:03 .bashrc
    drwxr-xr-x 5 rdiff-backup rdiff-backup 4096 2006-04-10 18:55 boot
    drwx------ 2 rdiff-backup rdiff-backup 4096 2006-04-12 18:46 .ssh
    backup:/home/admin#

    Hans
     
  6. falko

    falko Super Moderator ISPConfig Developer

    What's the output of
    Code:
    grep rdiff-backup /etc/passwd
    ?
     
  7. Hans

    Hans Moderator ISPConfig Developer

    Falko,

    here is the output:

    backup:/home/admin# grep rdiff-backup /etc/passwd
    rdiff-backup:x:3500:3500:rdiff-backup:/backup:/bin/false

    Hans
     
  8. falko

    falko Super Moderator ISPConfig Developer

    What's the exact error message when you do this as rdiff-backup:

     
  9. Hans

    Hans Moderator ISPConfig Developer

    Falko,

    here is the in- and output, you requested:

    backup:/home/admin# su -m rdiff-backup
    backup:/home/admin$ cd /backup
    backup:/backup$ ssh-keygen -t rsa
    Generating public/private rsa key pair.
    Enter file in which to save the key (/backup/.ssh/id_rsa):
    /backup/.ssh/id_rsa already exists.
    Overwrite (y/n)? y
    Enter passphrase (empty for no passphrase):
    Enter same passphrase again:
    Your identification has been saved in /backup/.ssh/id_rsa.
    Your public key has been saved in /backup/.ssh/id_rsa.pub.
    The key fingerprint is:
    dc:d6:e2:4d:d1:69:c8:12:e0:1e:a7:2e:f2:51:aa:f5 [email protected]
    backup:/backup$ nano /backup/.ssh/config

    Unable to open ~/.nano_history file, Permission denied
    Press return to continue starting nano

    Note:
    The file nano /backup/.ssh/config exists already, the last try, i created it as root. It was the only way i could create it.

    --
    Hans
     
  10. falko

    falko Super Moderator ISPConfig Developer

    This seems to be a problem with nano. I always use vi and never had problems with it...
     
  11. Hans

    Hans Moderator ISPConfig Developer

    Nano

    Wow, :eek:

    i did not expect this Falko, but i will try the VI editor.

    I let you know, how i am going on.

    Thanks for your reply,

    Hans
     
  12. Hans

    Hans Moderator ISPConfig Developer

    A little step further again

    Falko,

    You where right about the nano editor. I did everything now with the Unix VI editor and i could make a backup with rdiff-backup.

    I have only one more problem that i can not understand:
    Before i can make a backup: i have to give root's password to access the server. So i can not go further with creating a cron job for rdiff.

    Any ideas?

    Hans
     
  13. falko

    falko Super Moderator ISPConfig Developer

    Then there seems to something wrong with the certificates...
     
  14. Hans

    Hans Moderator ISPConfig Developer

    rdiff-backup is working!

    Falko,
    i did it...finally. Thanks for the hint.

    Hans :)
     
  15. falko

    falko Super Moderator ISPConfig Developer

    Juhuuu!!! :)
     
  16. Hans

    Hans Moderator ISPConfig Developer

    Fatal Error: Bad rdiff-backup-data dir on destination side

    Falko,

    I have this error when i make a backup with rdiff:
    And if i remove the rdiff-backup-data directory i receive a lot of update errors. I guess this is because rdiif creates incremental backups..

    Fatal Error: Bad rdiff-backup-data dir on destination side

    The rdiff-backup data directory
    /backup/server1/rdiff-backup-data
    exists, but we cannot find a valid current_mirror marker. You can
    avoid this message by removing the rdiff-backup-data directory
    ;
    however any data in it will be lost.

    Probably this error was caused because the first rdiff-backup session
    into a new directory failed. If this is the case it is safe to delete
    the rdiff-backup-data directory because there is no important
    information in it.

    How can i start over again, so i can avoid these errors?


    Hans
     
  17. falko

    falko Super Moderator ISPConfig Developer

    Remove that directory and check the permissions of the other directories (/backup).
     
  18. Hans

    Hans Moderator ISPConfig Developer

    /var directory is not included within backup

    I removed the directory as you told me.
    When i do an rdiff-backup --exclude /tmp --exclude /mnt --exclude /proc --exclude /dev --exclude /cdrom server1_backup::/ /backup/server1 the backup works fine again.

    One more problem: the /var directory is not backuped as it should be...

    What could be the reason for this?

    Hans
     
    Last edited: May 17, 2006
  19. falko

    falko Super Moderator ISPConfig Developer

    Any errors in the logs? What's the output of
    Code:
    ls -la /var
    ?
     
  20. Hans

    Hans Moderator ISPConfig Developer

    The output of ls -la /var

    [email protected]:/tmp$ ls -la /var
    total 108
    drwxr-xr-x 16 root root 4096 2006-05-03 21:28 .
    drwxr-xr-x 21 root root 4096 2006-03-31 12:56 ..
    drwxr-xr-x 2 root root 4096 2006-05-12 06:25 backups
    drwxr-xr-x 10 root root 4096 2006-03-31 11:44 cache
    drwxr-xr-x 2 root root 4096 2006-04-27 19:53 certs
    drwxr-xr-x 24 root root 4096 2006-04-27 19:30 lib
    drwxrwsr-x 2 root staff 4096 2005-02-18 15:59 local
    drwxrwxrwt 3 root root 4096 2006-05-03 19:23 lock
    drwxr-xr-x 10 root root 4096 2006-05-15 06:25 log
    drwxr-xr-x 2 root root 49152 2006-03-31 11:48 lost+found
    drwxrwsr-x 3 root mail 4096 2006-05-15 13:26 mail
    drwxr-xr-x 2 root root 4096 2006-03-31 11:50 opt
    drwxr-xr-x 13 root root 4096 2006-05-14 23:59 run
    drwxr-xr-x 5 root root 4096 2006-03-31 11:26 spool
    drwxrwxrwt 3 root root 4096 2006-05-11 19:10 tmp
    drwxr-xr-x 25 root root 4096 2006-05-13 00:30 www

    And the output of :

    backup:/backup# ls -la /backup
    total 32

    drwxr-xr-x 5 rdiff-backup rdiff-backup 4096 2006-05-17 02:40 .
    drwxr-xr-x 23 root root 4096 2006-05-16 21:04 ..
    -rw------- 1 rdiff-backup rdiff-backup 410 2006-05-16 21:20 .bash_history
    -rw-r--r-- 1 rdiff-backup rdiff-backup 567 2006-05-16 21:04 .bash_profile
    -rw-r--r-- 1 rdiff-backup rdiff-backup 1834 2006-05-16 21:04 .bashrc
    drwxr-xr-x 5 rdiff-backup rdiff-backup 4096 2006-03-31 13:23 boot
    drwx------ 16 rdiff-backup rdiff-backup 4096 2006-05-17 02:49 server1
    drwx------ 2 rdiff-backup rdiff-backup 4096 2006-05-16 21:11 .ssh

    Hans
     
    Last edited: May 17, 2006

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