hi ! I am struggling in configuation of Automated Backups with rdiff-backup. I tried it many times but didnt get any success so thought to ask for problems i am facing. My server has k12ltsp distribution and the backup server has CentOS. STEP 1: K12ltsp Distribution has rdiff-backup-1.0.5-1.fc5 and CentOS distribution has rdiff-backup-1.0.5-1.el4.rf which i think are same version. STEP 2: I have created user as mentioned in step 2. and then i run command su -m rdiff-backup [root@localhost ~]# su -m rdiff-backup bash: /root/.bashrc: Permission denied bash-3.00$ whoami rdiff-backup cd /backup bash-3.00$ cd /backup/ bash-3.00$ 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: 11:97:c7:66:70:e7:61:66:21:e2:91:0c:51:46:73:ca [email protected]ldomain NEXT I have created file with contents as following: bash-3.00$ cat /backup/.ssh/config host hostname hostname myipaddress user root identityfile /backup/.ssh/id_rsa compression yes cipher blowfish protocol 2 Next i change the permission of that file: bash-3.00$ chmod -R go-rwx /backup/.ssh bash-3.00$ ls -l /backup/.ssh total 16 -rw------- 1 rdiff-backup rdiff-backup 124 Jan 10 22:35 config -rw------- 1 rdiff-backup rdiff-backup 883 Jan 10 22:33 id_rsa -rw------- 1 rdiff-backup rdiff-backup 244 Jan 10 22:33 id_rsa.pub -rw------- 1 rdiff-backup rdiff-backup 395 Jan 10 21:42 known_hosts When i tried to copy public key to server bash-3.00$ ssh-copy-id -i ~/.ssh/id_rsa.pub root@host ipaddress bash: ssh-copy-id: command not found Then what i did is bash-3.00$ scp ~/.ssh/id_rsa.pub root@host ipaddress:/public.tmp root@host ip address's password: /root/.ssh/id_rsa.pub: Permission denied Then i login in as root to my backup server n did this: [root@localhost ~]# scp /backup/.ssh/id_rsa.pub root@host ipaddress:/public.tmp root@host ipaddress 's password: id_rsa.pub 100% 244 0.2KB/s 00:00 Then i login to my server and did this: [root@mainframe]# cat /public.tmp >> /root/.ssh/authorized_keys root@mainframe]# cat /root/.ssh/authorized_keys ssh-rsa AAAAB3.................................................= [email protected]ldomain Then i prepand the text n its in one line command="rdiff-backup --server --restrict-read-only /",from="ipaddress",no-port-forwarding,no-X11-forwarding,no-pty ssh-rsa AAAAB3.................................................= [email protected]ldomain [root@mainframe ~]# chmod -R go-rwx /root/.ssh I have uncomment the two lines in /etc/ssh/sshd_config [root@mainframe ~]# cat /etc/ssh/sshd_config RSAAuthentication yes PubkeyAuthentication yes [root@mainframe ~]# /etc/init.d/sshd restart Stopping sshd: [ OK ] Starting sshd: [ OK ] [root@mainframe ~]# STEP 4: bash-3.00$ whoami rdiff-backup bash-3.00$ bash-3.00$ cd /backup/ But it will ask me for password bash-3.00$ rdiff-backup ipaddress::/boot boot rdiff-backup@ipaddress's password: I am sending you all details so that u can figure it out well n tell me why this not working at my end. Regards.
The problem might be in /root/.ssh/authorized_keys. It could also be caused by two different rdiff-backup versions (I'm not sure if yours are identical).
I think they're different. You can only be sure that they are the same if they have identical version numbers and are from the same distribution.
well there version number is same i.e 1.0.5 but distribution is different. rdiff-backup-1.0.5-1.fc5 rdiff-backup-1.0.5-1.el4.rf U sure we can't configure it on different distributions ? Is there any howto available to configure rdifs-backup on CentOS as there is ssh-copy-id . Well i have seen ur's n matt posts but i wish i can found this package on CentOS. Regards.
Still problem with rdiff-backup Now i have the same version on fedora. Backupserver [root@mainframebkup /]# rpm -q rdiff-backup rdiff-backup-1.0.5-1.fc5 Mainserver [root@mainframe ~]# rpm -q rdiff-backup rdiff-backup-1.0.5-1.fc5 But still im having problem. Plz check me output n tell me wat to do . Step 2: [root@mainframebkup /]# su -m rdiff-backup bash: /root/.bashrc: Permission denied bash-3.1$ cd /backup/ bash-3.1$ 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: 29:65:2f:dd:04:82:b1:61:b1:6d:65:14:23:77:40:c8 rdiff-backup@hostname bash-3.1$ bash-3.1$ cat /backup/.ssh/config host server_backup hostname ip address user root identityfile /backup/.ssh/id_rsa compression yes cipher blowfish protocol 2 bash-3.1$ chmod -R go-rwx /backup/.ssh when i follow your step i got error i.e bash-3.1$ ssh-copy-id -i ~/.ssh/id_rsa.pub root@ipaddress 21 /usr/bin/ssh-copy-id: ERROR: No identities found ( The thing i did here is as follow. I removed ~/.ssh from there.) bash-3.1$ pwd /backup/.ssh bash-3.1$ ssh-copy-id -i id_rsa.pub root@ipaddress 10 root@ipaddress's password: Now try logging into the machine, with "ssh 'root@ipaddress'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting. bash-3.1$ Now on main server. [root@mainframe ~]# cat /root/.ssh/authorized_keys ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAv4ZaUtqxyrAHsU26nrEft8NAnU3ssdLtvPMqfFeUgm1s4GLMlZmKVGTf1otXFEJ43eT3w9D5LSuxpvADTyCfg0KL5EGEpabx7mnkHxTAyCws1Pb8o2PIGKTjxMdgBeK4Mq1MO+5kgPKVsQ+T8YcMo08vxUETrkIjdw98/VBceipBhakK+6HJaZJ8xjO5---------------- == rdiff-backup@hostname step 3; Edit the publick key on main server.(its in one line) command="rdiff-backup --server --restrict-read-only /",from="ipaddress",no-port-forwarding,no-X11-forwarding,no-pty ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAv4ZaUtqxyrAHsU26nrEft8NAnU3ssdLtvPMqfFeUgm1s4GLMlZmKVGTf1otXFEJ43eT3w9D5LSuxpvADTyCfg0KL5EGEpabx7mnkHxTAyCws1Pb8o2--------------------------------------------+NZWM6bXABRnw9NBHtnKFcmc1EpiFp6FhKOKR6KoYZS80C+NRpLZDV9uVDNMjuBHjwUobdpyWSiQ+EzXthxJgtmapMjLrlZqCz4HQ== rdiff-backup@server ip address Step 4 : testing bash-3.1$ rdiff-backup server_backup::/boot boot [email protected]'s password: it ask me for password
In the past, I had some problems with creating backups by using rdiff as well. The clue was that i did not use the vi editor, but another called nano which comes with Debian. When i started to use vi, i did not have any problems anymore. Maybe it works also for you.
I have read your post of vi and nano problem but i m using vi on fedora. I also think that i haven't done any thing wrong n checked all things 10 times but still not getting any success.
yes i m using vi editor and i have pasted all output . plz check it n give suggestion wat should i do.
need some more info Apart from above problem I want to know about this cron job last line 40 2 * * * /usr/bin/rdiff-backup --exclude /tmp --exclude /mnt --exclude /proc --exclude /dev --exclude /cdrom --exclude /floppy server1_backup::/ /backup/server1 " server1_backup::/ /backup/server1 " As in my case i put the host in config file as server_backup next my backup server name is bash-3.1$ hostname mainframebkup.rnd and its ip is 192.168.0.152 n i prefer to to use ip address then hostname. so in that case wat should i do to line /back/server1 and also in which directory i found backups in backup server ?
What's the output of Code: ls -la /backup , Code: ls -la /backup/.ssh , and Code: grep rdiff-backup /etc/passwd ?
falko i will paste u output tomorrow but i have some query about this crontab i.e 40 2 * * * /usr/bin/rdiff-backup --exclude /tmp --exclude /mnt --exclude /proc --exclude /dev --exclude /cdrom --exclude /floppy server1_backup::/ /backup/server1 in the last text :://backup/server1 wat this line is doing ? is this the hostname if yes how can i put ip address over here? becoz i dont get any password option when i do rdiff-backup server_backup::/boot boot so i thought to go ahead . if i get some problem i will ask you. Also where the data will be after the cron job will work ? Regards.
falko no need to reply for above post as i have rdiff working at home I got the above thing. . If i will face any other problem i will ask u. thanks.
falko it worked fine n even i backup my data from server to backup server day before yesterday. Today i checked it as i changed crontab timings and just execute command i.e rdiff-backup server_backup::/boot boot and got errors . bash-3.1$ rdiff-backup server_backup::/boot boot Traceback (most recent call last): File "/usr/bin/rdiff-backup", line 23, in ? rdiff_backup.Main.Main(sys.argv[1:]) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 285, in Main take_action(rps) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 255, in take_action elif action == "backup": Backup(rps[0], rps[1]) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 296, in Backup backup_set_fs_globals(rpin, rpout) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 418, in backup_set_fs_globals dest_fsa = rpout.conn.fs_abilities.get_fsabilities_readwrite( File "/usr/lib/python2.4/site-packages/rdiff_backup/fs_abilities.py", line 415, in get_fsabilities_readwrite return FSAbilities(desc_string).init_readwrite( File "/usr/lib/python2.4/site-packages/rdiff_backup/fs_abilities.py", line 152, in init_readwrite subdir.mkdir() File "/usr/lib/python2.4/site-packages/rdiff_backup/rpath.py", line 796, in mkdir self.conn.os.mkdir(self.path) OSError: [Errno 28] No space left on device: 'boot/rdiff-backup-data/rdiff-backup.tmp.0' Traceback (most recent call last): bash-3.1$ File "/usr/bin/rdiff-backup", line 23, in ? rdiff_backup.Main.Main(sys.argv[1:]) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 285, in Main take_action(rps) File "/usr/lib/python2.4/site-packages/rdiff_backup/Main.py", line 253, in take_action connection.PipeConnection(sys.stdin, sys.stdout).Server() File "/usr/lib/python2.4/site-packages/rdiff_backup/connection.py", line 352, in Server self.get_response(-1) File "/usr/lib/python2.4/site-packages/rdiff_backup/connection.py", line 314, in get_response try: req_num, object = self._get() File "/usr/lib/python2.4/site-packages/rdiff_backup/connection.py", line 230, in _get raise ConnectionReadError("Truncated header string (problem " rdiff_backup.connection.ConnectionReadError: Truncated header string (problem probably originated remotely) Regards.
BACKUP SERVER: bash-3.1$ df -h Filesystem Size Used Avail Use% Mounted on /dev/ida!c0d2p1 17G 16G 0 100% / tmpfs 1014M 0 1014M 0% /dev/shm /dev/ida/c0d0p1 33G 177M 31G 1% /home MAIN SERVER : [root@mainserver~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/hda2 37G 15G 20G 44% / /dev/hda1 99M 13M 81M 14% /boot tmpfs 505M 0 505M 0% /dev/shm
ok My crontab file is also corrupt dont know how. when i do crontab -e and insert text in it and try to save it, it give me following error and when i press ENTER it again go to text of file. crontab.XXXXD7XkXt" "crontab.XXXXD7XkXt" E514: write error (file system full?) WARNING: Original file may be lost or damaged don't quit the editor until the file is successfully written! Press ENTER or type command to continue Also when i open the file i got the following error E297: Write error in swap file "/tmp/crontab.XXXXBEhvOv" 0L, 0C Press ENTER or type command to continue
Same as till already said: clean up your full file systems 1st. Have you mounted /tmp on a separate filesystem? Do Code: ls -l /tmp to what's in there and what can be removed. Normally everything in /tmp can be deleted......
