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• How can I control wireless networks in Ubuntu without Network-Manager?

  - by Solignis

  Hi there, I recently installed Ubuntu on a laptop I got. I was having issues with the network manager just like I was having in my VM where it was not setting up the hostname correctly. Anyhow now I have a problem, since it is a laptop it will be moving.... But I have no way to discover new wireless networks. Anyway I can gain that functionality back? The problem I am running into is that I need to set the DNS search and domain for the machine so I can access my network but the network-manager was overriding the settings. Any help would be much appreciated.

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• why is drop box syncing so freakishly slowly in my linux virtual machine?

  - by Bec

  i am setting up a linux virtual machine (windows 7 64 bit host, ubuntu 64 bit guest, using virtual box) and i just installed drop box and set it to sync. I've only got about 2Gb in there so i figured it should take just an afternoon, but it's going at about 0.5 kB/second and says it will take about 60 days. I usually get about 200 kB/second in the host OS, and downloading straight from the dropbox website through firefox in the ubuntu VM i get about that, but sync is really slow. any tips?

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• How can I switch Linux running OS from disk to running from RAM without restarting?

  - by vfclists

  Is it possible to switch to running Linux from RAM or RAM disk after starting starting initially from disk? eg. You need to make an image of your hard disk, FTP it to a remote location, some time later you want the image back, so you start the system from disk as usual, restore the image you FTP'd from the remote location back into place. More like a CloneZilla backup and restore, without booting the server from CD or USB disk, but starting from the normal hard disk? Notes on environment I should have mentioned it earlier. It is a remotely hosted VM where I cannot boot into a recovery console mode or do a netinstall. It will always boot onto the same disk. Which means that if there is some serious corruption I can't repair it offline, which is why being able to ftp a previously saved backup into place is so important

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• What virtualization solution should I try next, after hitting problems w/ VMWare Player in dual-netw

  - by Alex R

  I have been using VMWare Player 2.5 for a while (Ubuntu guest on Vista host, 32-bit). VMWare had worked great until now but then I hit a brick wall: Due to some reorganization of my home network, the host machine now has to use a wireless connection to reach the Internet, while the printer, fileserver, and other important stuff are attached to a local gigabit hub. I have tried several tricks, such as editing the .vmx file, changing settings in vmnetcfg, etc, but I'm still unable to get the virtual Ubuntu box to connect each of the two virtual NICs to different networks (I did get it to recognize two NICs, but both DHCP'd onto the gigabit LAN). So, I'm ready to dump vmware for something with a little more low-level control of network settings. Virtualization is such a crowded space, I could spend months evaluating every product out there. I'm hoping for a shortcut... Can anyone recommend the best VM for my situation described above? Thanks

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• Accesing internet with Host-Only network VirtualBox

  - by Bibo

  I have two VMs in my VirtualBox. Both are FreeBSD and should communicate between each other. I have created network with DHCP enabled and set like this: Server Address 10.10.10.1 Server Mask 255.255.255.0 Lower Address Bound 10.10.10.100 Upper Address Bound 10.10.10.200 My VMs are pinging each other and getting right ip adress. This is what I must have and can´t change. Now I want to access internet from one VM and I found that I must use two network cards but I don´t know how to set the second one. I am new with VirtualBox and this stuff so if you count with this in you answer I would appreciate that. And I have Windows 8 as host system if it´s matter.

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• One bigger Virtual Machine distributed across many Nodes [on hold]

  - by flyer

  I just setup virtual machines on one hardware with Vagrant (this is just a test environment, not production!). I want to use a Puppet to configure them and next try to setup OpenStack. I am not sure If I am understanding how this should look at the end. Is it possible to have below architecture with OpenStack after all where I will run one Virtual Machine with Linux? ------------------------------- | VM | ------------------------------- | NOVA | NOVA | NOVA | ------------------------------- | OpenStack | ------------------------------- | Node | Node | Node | ------------------------------- (In my environment Nodes are just virtual machines, but my question concerns separate Hardware nodes) After some comments... Is it a language barrier, or? This is only my 'virtual environment'. If we imagine this virtual machines are a separate Nodes (e.g. every has 4 cores) the OpenStack is still the same, right? Can I run one Virtual Machine across many Nodes with OpenStack? Is it possible to aggregate the computation power of separate machines in one virtual distributed operating system?

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• How do I make a backup of a live server?

  - by Jurily

  At my new job, I have a production server with the following qualities: Windows (XP I think), ancient hardware Absolutely vital database No backups whatsoever Everyone in the company has full admin rights, the passwords are stored in a .txt on the global share No installers, except for the OS The machine itself is sitting on a wooden shelf 5 feet above the ground against an external wall with frequent truck traffic on the other side; the shelf is already bent from the constant load Hasn't been rebooted in $DEITY knows how long, my predecessor wasn't even sure if it would survive it UPS is installed, but since everything is hooked up to it, it would last 10 minutes tops No spare parts or hardware budget How do I make a full backup with minimal impact on the server? I'm not sure how close it is to a total meltdown. For all I know, plugging in a USB stick could kill the company, and of course it will be all my fault, since "it was running fine before you touched it". The ideal solution would be a VM, so I have a test environment as well (separate of course).

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• Recurring network issues the same time every day.

  - by Peter Turner

  Something has been happening on my company's network at 9:30 every day. I'm not the sysadmin but he's not a ServerFault guy so I'm not privy to every aspect of the network but I can ask questions if follow up is needed. The symptoms are the following : Sluggish network and download speed (I don't notice it, but others do) 3Com phones start ringing without having people on the other end. We've got the following ports exposed to the public for a web server, a few other ports for communicating with our clients for tech support and a VPN. We've got a Cisco ASA blocking everything else. We've got a smallish network (less than 50 computers/vms on at any time). An Active Directory server and a few VM servers. We host our own mail server too. I'm thinking the problem is internal, but what's a good way to figure out where it's coming from?

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• Virtual MS Sql Server not consuming enough CPU

  - by rocketman

  We have a Win2008 server 32 bit running as a virtual machine under ESX server. It has 6 CPU cores of 2Gz each and 4GB ram. It's running MS Sql Server 2008 R2 only. Problem: The server is heavily loaded and responds slowly. From windows taskmanagers point of view, it really looks overloaded, CPU wise. However, our external "cloud manager" says it's only using 2.5GHz worth of CPU-cycles in the cluster. I/O times looks "good". We have already tried to set the SQL servers number of working threads from 0(auto) to 256, to no effect. How to tune the VM host, guest or SQL to use all of it's alotted resources? Does it sound possible att all?

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• Logging off does not kill process in Windows Server 2003

  - by user25951

  I have a Windows Server 2003(Enterprise, SP2). My understanding was that any process created by a user will be terminated when the user loggs off the account. But its not happening. I login via Administrator account. Start a simple java process and logoff. But the process is not killed. Is there any configuration for this or something? I am mostly a software programmer and not much in to servers and so I am stuck. I found out that while logging off, 1) Win32 is supposed to send a CTRL_LOGOFF_EVENT to all processes started by that user. 2) JVM is supposed to handle this event and terminate the VM. But I can't understand why my java process is not killed when i logoff. Any idea!!!

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• Move/migrate vbox virtual machine to another computer along with snapshots

  - by user53864

  I have sun virtualbox(2.2) installed on windows xp and I've some VMs(ubuntu server) running with many snapshots . How do I move virtualbox VDIs along with all the snapshots to new windows system?. I tried copying the base vdi and creating it newly on a new system and it worked fine but could not move the snapshots of the vms. I even tried copying Virtualbox.xml and machine's xml file to the new system and manually editing the snapshots location to the new place in the virtualbox.xml file, the snapshots are listed in the snapshots tab(but when I checked snapshots location in the vm's settings it's showing the default location having edited it) but when I try to use the snapshots, reverting to current, it's not booting(some snapshots giving grub 2 error, some got stalled at the boot). I also tried export and import but only current state I could export and use it on the new system with no snapshots. Is there any way I could achieve this?. Please need help...

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• Can't install software from Ubuntu software center

  - by Casbar

  I've been experimenting with Ubuntu 10.04(64bit) inside a VirtualBox VM. This isn't my first experience with Linux, but I'm still very much a Linux noob. Whenever I try to install software from the Ubuntu Software Center, the installation gets interrupted and I get a warning that this installation requires untrusted sources. I can install anything I want using apt-get, it's just the gui that doesn't work. I've done research on the issue and taken the following precautions with no result: under software sources Allowed Canonical partners Allowed source code Changed the download source to main server I get no errors when running an apt-get update. Can anyone shed some light on the issue?

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• Windows Java-based apps not working

  - by DariusVE

  After updating the Java JRE to 7u25, many Java-based applications not works as usual, the I upgrade Java to 7u45, and still the apps not working. Minecraft start screen not showing, have to press TAB key to select the Run button and press ENTER to run the game. Netbeans IDE it's running, but none it's showing on the screen. Eclipse and JDownloader are working fine. I cannot run the Java Control Panel, it's only shows the Java icon at the taskbar. My System OS: Windows 7 Ultimate SP1 64Bits Java: java version "1.7.0_45" Java(TM) SE Runtime Environment (build 1.7.0_45-b18) Java HotSpot(TM) Client VM (build 24.45-b08, mixed mode, sharing)

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• Is paravirtualization evil?

  - by Daniel

  I have an VMWare ESX Server v3.5 with a few virtualized Debian Lenny VMs (kernel 2.6.22 with vmi) running Apache Tomcat 5.5. I enabled paravirtualization, and Disk IO increased from about 240MB/s to 380MB/s, making me a happy admin. The problem now is that my apache tomcat becomes deadlocked during startup, running with 200% CPU (I have 2 CPUS assigned to the VM), and don't know how to get both: A stable system and a fast system. I somewhere heared that paravirtualization is legacy anyway and won't be available on newer ESX servers. Is there a replacement for this seemingly performance-improving option, or is it discontinued becauses it is just unstable? What is the state of paravirtualization? Should I ignore it completely? Thanks for all answers in advance.

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• I just deleted "/bin". What's the best way to recover?

  - by Tom Marthenal

  I just ran (not on purpose!) rm -rf /bin. I've booted down the computer and am using Finnix to try to recover from it. I have succeeded in mounting the drive, and confirmed that, yes, the entire /bin folder is deleted. Is it possible to recover from this without reinstalling the OS? I'm thinking that I could setup a VM with the same OS and architecture (Ubuntu Server 11.10 alpha release, x86) and install all the packages I had installed on the server, then just copy the /bin folder. Will this work? Am I better off just starting over?

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• Tuning MySQL to consume less memory

  - by Alex

  I have a VM which has 2GB Ram, (full specs) And I am setting up a site which has one table in particular with over a million records. There's little or no usage of this particular database (perhaps once or twice a day) but simply running mysql grinds the whole server to a halt. I've looked through the top results but nothing is really denting the CPU however the memory seems to be the issue. The site isnt even live of taking requests yet. the memory situation looks like this: # free -m total used free shared buffers cached Mem: 2006 1880 126 0 3 53 -/+ buffers/cache: 1823 183 Swap: 2047 345 1702 Are there any good pointers to tune mysql to stop hogging the system memory? Thanks very much EDIT: (requested by 8bit): http://tny.cz/b41a0b12

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• virtualbox port forwarding - firewall config

  - by Roose

  i have a ubuntu host system with virtualbox running a windows server. In Virtualbox i have configured the network with a NAT interface and port forwarding for the RDP deamon running inside the vm. That works really well - i can connect to the windows rdp service over the internet. TCP *:3389 - *:3389 Now i like to restrict the access to the rdp service to only 3 public ip addresses and have no idea how to do that via iptables / shorewall. Something like: ACCEPT net:91.x.x.x fw tcp 3389 (shorewall rule) isn't working. Would be glad for any hint.

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• Ubuntu on Oracle VirtualBox: Shared folders

  - by Rosarch

  I looked at this question, but it didn't help. I'm running Windows 7 as a host with Ubuntu 10.10 as a guest with VBox 4.0. I want to have a shared directory between the two. I have installed Guest Additions. I went to the VBox control panel in Windows, added a Shared Folder (sharename Shared_Folder), and chose "Auto Mount". A directory named "sf_Shared_Folder" appeared in /media on Ubuntu, but when I put files in that directory from an OS, I can't see them on the other one. I then tried to create a directory without automounting (sharename collectivefiles), and to run the following command: foo@foo-VirtualBox:~$ sudo mount -t vboxsf collectivefiles FileShare /sbin/mount.vboxsf: mounting failed with the error: No such device What is causing this error? I rebooted both the VM and VBox itself, but I'm still observing this.

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• Best blog package/platform (java, php etc)?

  - by user50912

  Hi Folks, I want to set up a blog, but I want it to reside on a URL I've bought, I also don't want any of the ads and such that sit around other blogs on blog specific sites like blogspot and generally want more control. I was thinking of getting shared hosting with mysql and such to get it going (as opposed to a VM which would be overkill). Then I just need to decide on the easiest quickest (and most secure) way of getting something up there. After some googling, I see b2evolution.net which sits on php, or Apache Roller, which seems to sit on Java. Could anyone offer any advice on whats my best approach here? Are there security concerns with either or has anyone any experience in this area? I really want setup time to be minimal, so I can concentrate of the feel of the blog rather than whats under the hood. Many Thanks.

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• Deployment from OVA format

  - by Manvendra Bele

  I am deploying a VM using a OVA format. The size of OVA format is 57 GB. Currently free space on my datastore is 388 GB. At the time of selecting Disk Format type if shows me in red that the disk size required is 1 TB therefore you cannot select THICK provisioning. Therefore, i selected THIN provisiong. It THIN provisioing i am showed that Estimated Disk Usage is 112 GB which is less than the free space available. But even after selecting THIN proviosing at the time of deployment it throws an error that it cannot create disk as the size of disk is larger than the maximum specified limit. My block size is of 1 MB. Pasting my exact error here: Failed to deploy OVF package:File [datastore1] IMS Tester 1/IMS Tester1_2.vmdk is larger than maximum size supported by datastore 'datastore1

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• Problem with Ctrl key on a hp 2510p

  - by Ernelli

  I have a tricky problem with my corporate Compaq hp 2510p, the ctrl key is not working properly at all times. I belive that it is hooked in some filter chain that processes certain ctrl+[key] combinations which is very annoying. I would like some pointers on how to proceed when analysing what application/setup can can cause this kind of keyboard filtering to happen. Anyway some more background info: Ctrl works together with X, C, V. Both in editors and terminals (Ctrl-C, Z etc) but Ctrl-Shift-Esc and Ctrl-Alt-Del does not work. Very annoying so my only option for logging in us using HP's security app. Shift-Arrow works for selecting text, but not Ctrl-shift arrow to select word by word, but Ctrl-Arrow works when moving the caret word by word. Now the strange thing is that everything works ok with an external USB keyboard so it might be the driver, but still, google yields 0 when searching for the problem description. I have vm-ware player installed (but not running it), HP Protect Tools installed, if any of these could affect the keyboard driver.

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• Dell PowerEdge 2950 III running XenServer with 2 VMs gets sluggish after a week and needs rebooted?

  - by Joshua Rountree

  It has weird hangs and then random CPU spikes that do a ton at once. While remoted into the VMs I get an update all at once then it hangs for another 20 seconds. When it lets it go through I get a CPU spike. Basic server specs for the HW node is: 8 CPUs, 16GB ram 1TB HDD total iPERC6 raid 10 The VMs are barely used but I have them spec'd at VM 1: 4 CPUs, 4GB Ram VM2: 4 CPUs 6GB ram The HW node currently says it's total CPU usage is 11% AND Used Memory is at 63%out of 16GB I'm new to this stuff so I'm not sure. I just recently installed this and set it all up. Please advise if you can!

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• Debian crashed, file system is read-only and cannot backup - How Do I find/mount a USB drive?

  - by Spiros

  We have a Debian server (vm's) here at work and the server crashed after a power failure. I can only boot the system in maintenance mode, and the whole file system is set to read only. I can run fsck though maintenance mode, however I would like to get a backup of some files before I do. Problem: I cannot access the net since there is no network connectivity in maintenance mode, and for some reason I try to add a USB flash drive to the computer but I can't find it through the console. Question: how to you find/mount a usb drive on Debian? I have tried several resources from the internet but nothing worked. Is there any other way I could get a backup of my files? I cannot start networking since the filesystem is set to read only. Any help would be appreciated.

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• VMWare Player Run as Service

  - by Marshal

  I have a VMWare Player running a VM at all times. However I want the server to run that Virtual Machine on boot (without logging in). This will allow me basically to restart the Server and when it loads to the login screen it's already running VMWare. Any ideas? I have tried reading up on it however websites suggest VMWare Server. This is no longer backed by VMWare anymore. So I am looking to either make VMWare Player a service or if anyone else has any other ideas? Running Win 7 on my server btw Thanks for looking.

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• Can't get ZSH working on CentOS

  - by waveslider

  I've been using zsh for a couple of years now on Ubuntu and really like it a lot. I've installed it on our production server as well, which is running CentOS 5.2 However, I just installed it via yum on a new VM I created to use as a development box, to replicate our production box as closely as possible. Although yum shows that it is definitely installed (/bin/zsh) and that it is set as my shell, it does not appear to be working. Instead of creating the .zshrc and .profile files in my home directory, it created a .tcshrc file. Also, I did not receive the default configuration menu that is always displayed once you begin using ZSH, and none of the features (like advanced tab comple

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