Ubuntu :: Rsync - Ssh - Pgp Keys ?
May 15, 2010
I setup keyed ssh between two of my computers on my lan. It was working great. I used Ubuntu's Passwords and Encryption Keys tool to generate the key.
Yesterday I tried rsync'ing a grip of files to the ssh server and couldn't get it to work, I figured I was just messing the rsync command up. Today I just tried to log in using ssh and it just hangs there after I type the ssh command.
With verbosity on it stops at checking the blacklist file. Does this mean it decided my key is one of the badly generated ones? Why would it decide this now I thought it was supposed to catch that when generating the key.
Also I just checked that file it's trying to check doesn't even exist. Should it?
Code:
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Nov 17, 2010
Thought I'd post it here because it's more server related than desktop... I have a script that does:
[Code]....
This is used to sync my local development snapshot with the live web server. There has to be a more compact way of doing this? Can I combine some of the rsyncs? Can I make the rsync set or keep the user and group affiliations? Can I exclude .* yet include .htaccess?
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Jan 7, 2011
When I run rsync --recursive --times --perms --links --delete --exclude-from='Documents/exclude.txt' ./ /media/myusb/
where Documents/exclude.txt is
- /Downloads/
- /Desktop/books/
the files in those directories are still copied onto my USB.
And...
I used fetchmail to download all my gmail emails. When I run rsync -ar --exclude-from='/home/xtheunknown0/Documents/exclude.txt' ./ /media/myusb/ I get the first image at url.
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Jun 27, 2011
Just wondering if Ubuntu has an Accessibility equivalent for sticky keys and mouse keys.
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Apr 17, 2010
I don't know if this is a configuration issue or a hardware issue, but I have a Kinesis Advantage USB keyboard and for some reason the F3-F5 keys aren't responding as they used to. They don't respond to anything and, when I tried using F5 on Emacs, it said <XF86AudioNext> is undefined, so I guess it's a weird mapping problem.
Any idea how I could remap them to the original meaning?
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Apr 12, 2011
I have a tiny shell script to rsync files between two servers and remove the source files.
This script works fine, when it has been initiated manually or even when the rsync command is executed on the command line.
But the same script doesn't work, when I try to automate it through crontab.
I am using 'abc' user to execute this rsync, instead of root, as root login to servers are restricted in all of our servers, by us.
As I mentioned earlier, manual execution works like charm!
When this rsync.sh is initiated through crontab, it runs the first command(chown abc.abc ...) perfectly without any issues. But the second line is not at all executed, and there is no log entry i can find at /mnt/xyz/folder/rsync.log.
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Sep 18, 2009
I just tried to sync files from one server to another. After the sync process, I found the files are bigger than original ones.
I looked up the web and found someone mentions the rsync daemon. So I have to run the daemon on one server before I run the rsync?
The command I used is rsync --partial --progress -r source destination
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Jul 21, 2010
use rsync to cp such files and dirs under /var/www/html/mydir directory but these two files(/dir4/1.html /dir4/2.html) cant rsync to dest mechine.
rsync configure file,below...
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Apr 7, 2011
I'm running Debian (Squeeze) and I have a toshiba portege m700. It has five buttons on the front just under the screen, which are the only ones accessible when you flip the screen over into tablet mode. One of them is for rotating the screen, and another is for switching to external display. I want to remap the remaining three to control, alt and super so that I can use shortcuts with the stylusThe problem is, when I used showkey to find out the key codes, I found out that each button generates more than one key code:Button 1:
key 126 press >> super_r, although this is distinct from the actual super key (125)
key 7 press >> 6
key 7 release
key 126 release
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Dec 8, 2010
I'm using Ubuntu 10.04 LTS server and Postgresql 8.4. I have a .sh script that is run by cron every other hour. That works fine. The .sh script includes an rsync command that copies a postgresql dump .tar file to a remote archive location via ssh. That fails when run by cron; I think because it is (quietly) asking for the remote user's password (and not getting it). I set up the public/private ssh key arrangement. The script succeeds when run manually as the same user that the cron job uses, and does not ask for the password. I am able to ssh to the remote server from the source server (using the same username) and not get the password prompt (both directions), so why doesn't rsync work? I even put a .pgpass file in the root of that user's directory with that user's password, and the user/password are identical on both servers.
I think the problem is rsync is not able to use the ssh key correctly. I tried adding this to my script but it didn't help.
Code:
Here is the rsync command embedding in the .sh script.
Code:
Here is the cron entry:
Code:
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Jan 27, 2010
I want to use rsync in order to have a folder synced at startup with my fat32 partition. I figured out how to mount the fat32 partition automatically at startup but I'm failing with the rsync command.I came across this script but it works only the first time, when there is a new file to sync it fails.
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Sep 20, 2010
I've bought a NAS (Western Digital My Book World Edition 1TB) which I want to use to make backups (preferably incremental) of some important files.
After much deliberation in finding suitable backup software it seems like good old rsync is the best thing for the job (backintime struggles to copy to remote locations?)
I have enabled SSH on the NAS config. I'm using the following command to do a test run on a small folder:
Code:
sudo rsync -azvv -e ssh /home/matt/Careers/ admin@192.168.1.100:/public/AutoBackup/
And I get the following error:
Code:
admin@192.168.1.100's password:
[Code].....
Anyone know where I'm going wrong here? I'm sure it's probably something simple but I can't crack it. I've tried variations on the destination folder such as admin@192.168.1.100:/AutoBackup/ without success.
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Sep 19, 2010
When I hit the "S" key it opens up the power menu up in the top right corner and when I hit the "M" key it opens up the mail menu on the top panel. How can I use these keys to actually type not open those menus.
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Jan 18, 2010
I want to use rsync to synchronize some folders on my LAN. I have this working with two scripts; one runs at the beginning of my work session and gets the latest directory tree from the server, and the other runs at the end of the session to put any local changes back on the server. My "get" script looks something like this:
Code:
rsync -avuzb --backup-dir=/home/user/rsync_backup_dir --delete my_server:/home/bak/common_data/ /home/user/data
This works well, and with the "b" option any file that has been deleted from the master directory tree on the server will be deleted from the local machine and moved to the local backup directory. This is a safety measure to prevent the loss of files through a mistake (on my part).
The problem is the "put" script:
Code:
rsync -avuzb --backup-dir=/home/user/rsync_backup_dir --delete /home/user/data/ my_server:/home/bak/common_data
I want to run both scripts from the local machine, but the "put" script will not save deleted files to a backup directory. I tried using a remote backup directory like "my_server:/home/user/rsync_backup_dir" but this did not work. Is there a way to backup files deleted from a remote server from an rsync script run locally?
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Mar 2, 2010
I saw in a magazine reference to using rsync to have identical copies of folders. This looks like something I could find useful as I have a large number of items in need of safe backup.
I have the folders on an old system on a home network and would like to copy these over to a USB Hard Drive.
Currently the folders reside on SFTP xxx.xxx.xxx.xxx and I wish to sync them to a USB port on my laptop.
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Feb 14, 2011
I'm currently trying to have crontab to automatically backup files from ramdisk. It works perfectly when I run it myself by simply cd:ing to scripts directory and type ./save_world.sh.
The problem is, that crontab DOES (at least it looks like it) run that command every one minute. /var/log/syslog does show it executing that line every one minute without any errors. I'm currently very confused what I did wrong here. I have tried rebooting, fiddling with crontab line, tried sudo crontab -e but nothing seems to work.
My script is called save_world.sh and it is located in /home/phoe/minecraft/rpg/
Code:
My crontab -e has one line and it is following:
Code:
I haven't determined any specific time yet, because I'm just trying to get it work first.
Snippet from /var/log/syslog:
Code:
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Aug 2, 2010
I have a samba share to a windows 7 computer I do not know if I will be able to use backintime or not so I want to know how to have rsync do my backup.I read the man but I'm not sure if I understand the it.on same computer different hard drive to run every hour in a script. Leanne is windows 7 share and backup is the other hard drive in the computer rsync -arvRzEP /media/leanne /media/backup.
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Jan 13, 2010
I have generated SSH *.pub and *.ppk keys.
Where should I put them so that they are automatically used and available when e.g. issuing an ssh ....
command in Terminal?
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Feb 5, 2010
I try to import a key from a keyserver when I add a repository to software sources, it just tries forever and times out. For instance, following the instructions here: [URL]... to add the key "CE49EC21" for the ppa:mozillateam/firefox-stable. Whether I do it in the terminal:
Code:
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys CE49EC21 or by clicking the link on their page, I get nowhere. I've had this problem with other keys from keyserver.ubuntu.com too.
It suddenly occurred to me today that maybe my router is the problem. It has a draconian firewall built in. (For instance, it won't allow incoming bittorrent traffic without me explicitly opening ports.) So maybe, since I'm trying to receive a key, it's preventing the key from coming in? Does anyone know why I'm having this problem getting keys?
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Mar 25, 2010
I recently generated a GPG key for managing a PPA. While stumbling thought building packages, I realised I had set an expiry on my key. Is setting an expiry dangerous for any services I would use?
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Jul 6, 2010
I added a Romanian keyboard to the system. When I check the layout I see some keys have four characters associated with them. For example the key highlighted in the screenshot I attached has four characters: ș, Ș, ;, :. The first two can be used by pressing the key with or without Shift, but how about the other two?
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Aug 19, 2010
I posted this in Networks but have had little luck in that forum lately...I haven't been able to connect via ssh to my media server at home. It's running Karmic (non-server version) and has sshd installed. I generated a rsa and dsa key pair and added them to the server in .ssh/authorized_keys and .ssh/authorized_keys2 by use ofcat key >> .ssh/authorized_keys(2)Changed sshd_config to only accept Keys and kept port 22, since I will port forward through router and make firewall exception down the line.I made an account on the server with the same name as my laptop. Here's output from ssh -v daniel@10.0.0.10
PHP Code:
daniel@Geek:~/.ssh$ ssh -v daniel@10.0.0.10OpenSSH_5.1p1 Debian-6ubuntu2, OpenSSL 0.9.8g 19 Oct 2007debug1:Reading configuration data /etc/ssh/ssh_configdebug1: Applying o
[code]....
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May 31, 2011
what purpose does it serve to use a passphrase? Once the keys are generated the passphrase isnt used? Or what am I missing??? I did not use a passphrase and understood that there was no security implications of not doing so. Is this correct?
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Jul 7, 2011
So I have a very simple problem, or rather I thought it was going to be simple. I have a keyboard with some multimedia buttons. They are the standard ones, (Home, Browser, New Document, etc.) but at the moment they don't do anything. I would like to set it up so that Home executes 'dolphin ~', Browser opens Firefox, New Document opens Libre Office.
This was all very straight-forward in GNOME but I can't figure out how to in KDE (I am a relative newcomer to KDE). I went to System Settings->Shortcuts and Gestures and played around for awhile but to no avail . I've also tried DuckDuckGo-ing.
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Mar 15, 2010
So I just used rsync to backup about 400gb of data to my NAS. Look just over a day to complete, which is what I figured. I decided I should run rsync again to see how its going to handle comparing and only adding new files to the remote location. So I added a few new files and then ran the backup again. Well rsync is trying to do a complete copy of all of my original data, even though they have not changed.
Is there a way that I can tell rsync to compare the two directories and only add the new files and delete the ones that are no longer in the original location?
Here is command that I am running:
Code:
sudo rsync -azvv --progress --stats /media/sda1/multimedia/movies /home/codeblue/NAS_Share_Point
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Mar 23, 2010
I've been trying to get my headless Ubuntu 9.10 server to back up files from my Windows XP box and onto a 1 TB Seagate FreeAgent Go USB drive (which is connected to the Ubuntu server). I've tried two different methods, both of which are behaving strangely and not quite working. I'm using SSH to access my Ubuntu server.
The /etc/fstab line for the USB drive looks like this:
Code:
/dev/sdb1 /media/usb-backup-windows ntfs uid=34,gid=34,umask=022,dirsync,sync 0 0
I'm using NTFS because I'd like to share this drive between Windows and Linux. The drive gets mounted fine and I can read/write files after booting up. The way I'd like for this to work is to have my Ubuntu box mount the Windows drive using CIFS. So I mounted the C drive using the following command:
Code:
smbmount //windowsxp/C$ /mnt/windowsxp/C -o directio,iocharset=utf8,noperm,nounix,ro,credentials=/home/user/.smb/passwords.conf
The mount works fine. I can browse directories under /mnt/windows/xp/C, read files, copy files to Ubuntu, etc. So now I have my USB drive mounted and the C drive on my Windows box mounted. Should be good to go, right? Unfortunately, after several minutes (this varies, sometimes it can go an hour or so) of copying files using rsync --archive /mnt/windowsxp/C/ /media/usb-backup-windows/C/ (the actual command I use has more options - not sure if that's important), the server locks up.
The SSH session dies and I can no longer ping it. The server will eventually start responding after several minutes, only to lock up again a few minutes later, and so on and so on. When it locks up, the following messages end up in /var/log/kern.log:
Code:
CIFS VFS: Unexpected lookup error -26
CIFS VFS: No response to cmd 46 mid 59789
CIFS VFS: Send error in read = -11
CIFS VFS: server not responding
I did some Googling on these messages and came across a suggestion to set /proc/fs/cifs/OplockEnabled to 0. I gave that a shot but it didn't make a difference. I also tried plugging in a mouse and noticed that I could make the server respond immediately after a lock up by moving the mouse. I have to move the mouse though - just leaving it plugged in without movement doesn't help. I have to wait for the hang to occur and then move it. Once I do that, things progress for another few minutes.
This got me thinking that I had a lack of entropy and the mouse movement was kicking things into gear. So I tried moving /dev/random to /dev/random-chaos, and created a symlink /dev/random that just pointed to /dev/urandom. This didn't work - same exact behavior. So why in the world does moving the mouse bring the server back and cause it to start responding, if only for a few more minutes until the next hang?
I then gave up on this approach and tried connecting to an rsync daemon running on my Windows box (using Cygwin), instead of using the CIFS mount point. After getting the config file right and figuring out how to run it as a service on Windows, I started getting files copied once again. However, after what seems to be about the same length of time (several minutes to an hour or so), the rsync connection dies and I get the following message in the Windows rsync log file:
Code:
2010/03/22 13:01:01 [4024] rsync: writefd_unbuffered failed to write 4 bytes to socket [sender]: Connection reset by peer (104)
2010/03/22 13:01:01 [4024] rsync error: error in rsync protocol data stream (code 12) at io.c(1539) [sender=3.0.7]
The Windows box is running rsync 3.0.7 and Ubuntu is running 3.0.6, but they are both protocol 30. The rsync error log on Ubuntu doesn't help much - it also says "Connection reset by peer". I've tried this at least a dozen times and it always fails with these messages. It's weird because it's always 4 bytes, never anything different. I also noticed that /var/log/kern.log had the following messages, although they do not line up with the times that rsync died:
Code:
usb 1-5: reset high speed USB device using ehci_hcd and address 2
I did some Googling on this message and tried some stuff that worked for other people. I added dirsync and sync to /etc/fstab. I tried setting /sys/block/sdb/device/max_sectors to 64. Neither one of those made a difference. unloading the ehci_hcd module and dropping back to USB 1.0. However, 9.10 doesn't seem to have that module loaded, so I'm not exactly sure how to turn off USB 2.0 and just try 1.0. I'm not real enthused with that workaround anyway because I have at least 500 GB to copy.
I've kind of run out of ideas here. It's frustrating because the entire reason I bought the hardware and set up Ubuntu was to run backups. I'm not sure if my problem is a networking issue (CIFS VFS server not responding, connection reset by peer), a problem with running headless (wiggling the mouse temporarily prevents the hang), a USB device problem (reset high speed USB device messages), or something else entirely.
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May 9, 2010
I am currently backing up my data but find that it takes way to long to do a rsync, it takes forever to just find the differences and transfer them.Out of 3 separate rsyncs the main one that is slow is my www.skins.be mirror directory which is 41GB and has 392,200 files, sorted into multiple directories. Which grows by around 100 every couple days.I think that something that would be able to track changes by inotify time on directories will speed it up since Picasa sure finds the changes fast when I open it and it is tracking over 26,200 pictures. I just don't know of a backup solution that does that.
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Jun 18, 2010
I'm trying to learn how rsync works to backup my system. I tried:
Code:
rsync -azvv /home /media/Elements
I get a folder called home on my external hard drive but when I use ls -l to see the permissions they are all wrong.
On my /home folder the permissions for /nathan are
drwxr-xr-x 48 nathan nathan
The permissions on the backup /nathan folder are
drwx------ 1 nathan nathan
I also tried using the long version of -a which is -rlptgoD and that didn't work either. What do the 48 and 1 mean when I used ls -l? When I look in the /nathan folder the permissions are all screwed up too. A lot of the files are backed up as executable and the permissions are all screwed up. I also ran it with sudo, and that didn't work either. The permissions were still screwed up and ownership is messed up too.
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Jul 20, 2010
This should be a quick one. I'm trying to backup a single directory and it's subdirectories on my Lucid Server to a freenas box across my network. This is what I'm using to do that rsync -r -a -v -z * --delete freenas: DSIBackups..It almost works perfectly except for one problem. When a file is deleted at the source, this command doesn't seem to delete it on the receiving end. I assumed that the --delete would do that but aparently not.
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Aug 14, 2010
I launched a script using rsync and the option -delete-before, however the destination folder was the wrong one. I noticed it only seconds after but it was still too late. In less than 5 sec rsync deleted over 200gb of data on my external hard drive... It is not in my Trash nor on the HDD trash but it's not possible that the data were ereased in less than 5 sec! (I dont know how rsync handle deletions.) I know I am really stupid but is there a way to get back all my data (mainly HD movies in mkv, mp4 and some avi)
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