Ubuntu Networking :: Transfer Files From Cluster To Host And Then Host To Another?
Mar 4, 2010
I am working on a cluster for a molecular dynamics class and I have to edit my FORTRAN code (only the newest and best for me!). In order to get through to the cluster I have to ssh in. The network on which the cluster resides is behind a firewall, so I have to ssh through the firewall into the network first.
this is fine, I can login and move files and folders as needed, including sftp-ing into host 1, then into the cluster so I can transfer files from cluster to host and then host to me. This gets rather tiresome, so it would be nice to edit the files in place.
The problem is that when I access my code with emacs it launches the emacs client on Host 1, with no mouse support. I know the purists will howl about how I should be using keyboard shortcuts, but I am a chemist and not a programmer, so the mouse is very nice for me. Is there any way I can perhaps mount the cluster using sshfs so that when I open my code it launches a local instance of emacs? Sorry if this is the wrong forum, but I thought it was network related.
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Oct 20, 2010
I have two servers, one has an empty / and the other has a subdirectory with a large number (4 gig) with many, many files. I need a way to transfer the files en masse from the server with the large number of files to the one that is essentially blank.I don't have space on the used host to simply gzip all the files. I've googled this and see that there may be some combination of tar and/or gzip that will let me do this with some sort of redirection.
I really need and example line of how this can be accomplished. If my explanation seems rather sparse, I can supply more details.
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Oct 12, 2010
I got a bunch of machines (~10) that I share with my co-workers. I have appropriate .ssh file(s) set up so I don't get prompt for password when I try to ssh.Currently I ssh into these hosts and then do a top to check the load before I start using the machine. Because I don't want to be on a busy host.Can someone show me how to write a script that find a least-busy host given a list of hosts to check? (hardcoded is fine)
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Jan 27, 2009
The internal network is behind nat done by the PC Router.The TP Link is recieving wireless signal from outdoors and it has switching and basic routing capabilities. I'm using the PC router for better routing options.PC Router (or R for short) is a triple-booting machine - Linux, FreeBSD and Windows. It has two lan cards - external (ext_if) - 100Mbps Realtek 8139 and internal (int_if) - 1Gbps integrated Realtek 8169.The problem is that all traffic from R to the network is slow - about 5-20K, while the traffic in the oppoiste direction is all right - about 10MB that is fine for 100Mbps cables, NICs and switches. The problem persist no matter the OS the pc R is running.I've tried some debugging on the situation as follows:
- put another PC at the place of R - everything is fine. That exclude the possibility of damaged cables, RJ-45s, switches and etc.
- connected both of the NICs to the Internet while the internal network is being disconnected and they both work fine (no delays)
- traffic shaping is not running
- there is nothing in firewalls except NATing the internal network (and it is working fine). Actually these firewall rules have been operational for more than months and everything was fine untill a week or two ago.
- changed the internal NIC with another
- connected the internal network directly to the TP and all of the PCs are getting good network performance. Then connected the R machine to the TP as well and there was good performance between the internal network PCs and R.
- R has good performance to the TP. In fact everything has good performance directly to the TP (when not connecting trough R).
- the problem persist only between R and machines from the internal network.
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May 19, 2010
So here's the setup:
Ubuntu 10.04 host inbound port 22 open
FreeBSD 8.0 host no inbound ports open
Both hosts are running sshd currently. What would you do for the Ubuntu host to be able to ssh to the FreeBSD host? A tunnel?
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Oct 16, 2010
On my bare metal server, I get about 130MB/s read from a software RAID 10 array, but when reading the same file from a VM via NFS over the VirtIO interface,I only get about 40MB/s.
Furthermore, the process for the VM uses >180% CPU on the host, and ~40%, and the 5 min average is ~1.5 on the host and guest. I have dual E5620's so I'm disappointed that the transfer is so slow, as I was expecting at least 90MB/s.
I'm new to being a sysadmin, so if anyone has some tips I can use to increase the transfer rate, and possibility reduce the CPU load as well I'd appreciate it. I'm assuming that 130MB/s is the max speed of two 7.2k HDDs, but if there's any way I can squeeze any more out that would be great too.
System specs:
2x Intel Xeon E5620s @ 2.40Ghz
8GB of RAM @ 1066Mhz
4x 1TB Western Digital Black HDDs in RAID10
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May 27, 2010
I have ubuntu server as a guest in virtualbox and xubuntu as my host os. I have a shared folder on my host that can be accessed by my network. I'm trying to use my server without the need to install a desktop, so how would i transfer a file from my host machine to my ubuntu server guest?
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Aug 14, 2011
Desktop, laptop, both static IPs, can ping each other no issue. 10.04 LTS.Am attempting to transfer files using Filezilla (which worked when I tried it about two years ago!) and the overall response is 'No route to host'. I have scoured the interwebs and have found no solution. Pretty sure I'm putting in the correct details.
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Sep 8, 2009
Many of mails sent from my mail server that are in Queue;The main reason is deffered by domains like yahoo,aol,etc.but there is one more error that i keep getting and that is Host Unknown,Below is an example from mail log,The catch is,test mail sent on the same email id sent from my personal mail from the same server i.e. url was deliveredHowever,another mail containing client information sent from customercare@mycompanysdomain ended up in queue.
There are more examples of the same,around 20 domain have the same problem.
Sep 7 14:33:46 server2 sendmail[24591]: n8793jiC024589: to=<abc@xyz.fi>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=163672, relay=xyz.fi., dsn=5.1.2, stat=Host unknown (Name server: xyz.fi.: host not found)
Sep 7 22:09:42 server2 sendmail[6407]: n87Gdffa006403: to=<abc@def-fgh.com>, delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=152474, relay=def-fgh.com., dsn=5.1.2, stat=Host unknown (Name server: def-fgh.com.: host not found)
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Jan 19, 2010
Host - Fedora 12 64bit
KVM
VM - Windows Server 2008 64 bit
bridge-utils
VM can ping host and Internet but host can't ping VM.
I set VM static IP 192.168.0.205.
It turns out dynamic IP - 192.168.0.55
On host:
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Oct 30, 2009
Bit of an odd one, this. I've migrated a website from my old server to a new machine. Both servers run Ubuntu + Apache2. Both only serve a single site, apart from the default site.I've flipped the domain name to the new IP address.The trouble is that after moving the virtual host config over into sites-available, with the necessary link in sites-enabled, Apache attempts to serve from the default web root (/var/www) rather than the actual site content (in /var/www/technology). So for example, an attempt to browse.
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Jul 3, 2011
I'm trying to get Synergy up and running between my Windows 7 (server) host and my Arch Linux (client) host. In rare exception, synergy works perfect on my windows host, however every time I try and run Synergy on my linux machine I get the following error in messages.log:
[code]...
I'm running Arch with a barebones Xorg install and SLiM with LXDE. I'm not sure what in the world is causing the problem and haven't been able to find anything of substance in a search.
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Mar 9, 2011
I'm trying to ssh from my laptop to my desktop (both fedora 14) over a local network. I can ping my desktop and get responses, but if I ssh to it, I receive
ssh: connect to host 192.168.100.xxx port 22: No route to host
I can ssh from the desktop to itself.
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Oct 20, 2010
HOW TO GET THE IP ADDRESS OF HOST IN LINUX WITH USING OF HOST AND NSLOOKUP COMMAND and after getting the ip address how to assign it in the variable
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May 9, 2011
I am a bit of a n00b when it come to linux but I am setting up a test environment were I have a appliance monitoring network traffic. Part of my test requires me to copy a file via RCP from one host to another host. I have two ubuntu boxes. I have allowed the subnet in the etchost.allow for ALL. I have installed rsh-server
When I try to copy the file it looks like it tried to use SCP instad of RCP because it connects to 22 instead of 544. Also note that traffic must be unecrypted thus me trying to use Is there anyway to make ubuntu go old school to allow me to use rcp instead?
Code:
testuser1@ubuntu:~$ rcp /home/testuser1/test.txt testuser1@10.46.41.38:/home/testuser1
ssh: connect to host 10.46.41.38 port 22: Connection refused
lost connection
testuser1@ubuntu:~$ rcp
usage: scp [-12346BCpqrv] [-c cipher] [-F ssh_config] [-i identity_file]
[Code]....
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Nov 14, 2009
I have installed CentOS 5.4 machine named test.example.com (192.168.1.1)File /etc/hosts contains:127.0.0.1 test.example.com test localhost.localdomain localhostI have read that the loopback addres should not be assigned to host name,only to localhost and the host name should be assigned to 192.168.1.1, like this:127.0.0.1 localhost.localdomain localhost192.168.1.1 test.example.com testIs there any reason why it should be one or another way?
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Aug 5, 2009
What do host.allow and host.deny do exactly? what are they??
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Apr 16, 2010
I am fairly new to Linux. I have a Win XP host machine where I am running a Redhat virtual machine using VMplayer. I have a tool in the VM that I need to run using some input data located on the host machine. How can I share files between the host and the VM? I need to be able to read/write files from within the VM.
Someone mentioned "Samba" to me and it looks like it's installed on the VM, or at least I see files and folders on the VM containing "samba" in their names. So how do I use it for sharing? Are there other approaches? Can you provide step-by-step instructions or point me to those?
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Apr 18, 2011
wanting to set up a website, I have a www folder with stuff in it, I'm on Ubuntu 10.10 I wanna port forward so that i can put my www files online and get a domain name,
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Apr 16, 2010
I have a Win XP host machine where I am running a Redhat virtual machine using VMplayer. I have a tool in the VM that I need to run using some input data located on the host machine. How can I share files between the host and the VM? I need to be able to read/write files from within the VM.
Someone mentioned "Samba" to me and it looks like it's installed on the VM, or at least I see files and folders on the VM containing "samba" in their names. So how do I use it for sharing? Are there other approaches?
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May 25, 2011
I need to delete all files inside remote directory using ssh P.S. The directory must not be deleted, so @Wes answer is not what I need. If it would be local dir, I would run "rm -rf dir/*"
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Feb 11, 2010
I can no longer drag files from my ubuntu host into my XP guest. I have vmware tools installed in XP and up until recently I could simply drag whatever I wanted back and forth between the systems. When I try to drag a file across into XP the cursor has the plus sign like it would normally to drop a file in, but now it also makes a selection box on the XP desktop. Same problem in Workstation and Player. I haven't posted on the vmware forums yet, I figured someone here probably has had the same problem. I don't think it was a kernel update. I restarted ubuntu with 2.6.31.18 which was fully functional before, still with the same problem.
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Aug 2, 2015
Having an issue with rsync
I launch the following
Code: Select allrsync -avz --remove-source-files --log-file=/home/pi/rsync.log --temp-dir
=/data/temp --partial --progress -e "ssh" 192.168.1.100://data/ext/downloads/File.ext /data/
Basically I download to main PC and rsync to my pi as the pi has a fraction of the speed for some reason when downloading form a source outside of my network.
The first few files will sync fine. Then I start getting errors like this
Code: Select allrsync: rename "/data/temp/.File.ext.y1716M" -> "File.ext": No such file or directory
(2)
The directory on the host has user and group ownership as pi. Rsync has been setup to login without a password.
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Jul 28, 2010
My RHEL version is Red Hat Enterprise Linux AS release 4(Nanhant update 6) I installed Linux on vmware.My host is win xp.Am able to ping guest as well host.How i can copy the files from host to guest.
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Mar 31, 2011
I have one script that goes through some IPs:
###############################3
#/usr/bin/sh
# This is a script to copy files from one host to a group of
[code]....
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Jul 23, 2011
ubuntu 11.04
ubuntu classic
wubi
When I try to delete a file in the host directory (and sub-directories), I see the prompt, 'Cannot move file to trash, do you want to delete immediately?'
I googled this issue and see some solutions that require editing fstab, but not sure if that's the right approach in wubi, and not so sure what edits I would make in fstab anyway.
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Aug 18, 2010
What is the best way to share files in virtualbox between host/machine I thought of trying usb but the devices are all greyed out. I know the fix for this but I have to search for it, permission problem I think? Or is there a more elegant way
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May 26, 2015
Can i block on debian that user can not download any files from host via winscp or other SFTP client ?
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May 2, 2011
I need to add a user to the sudoers in my vps host and edit a couple of files and I just cannot make sense of visudo, vi or nano. The tutorials I find on the net just take too long to study and they are never complete, can someone explain what I need to do? I am running Debian 506.
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Sep 8, 2010
Has anyone had issues installing Drupal on centos. I have copied my files into a virtual host container but cannot access the site. When I place a phpinfo file into the folder and browes to it I see that Virtual Directory Support is "Disabled" However how did the php page get shown from the same virtual directory mm I may have asked to soon.Installing Drupal on CentOS 5/Red Hat/Fedora http://drupal.org/node/32773
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