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• Installing Windows 7 from USB on a Thinkpad T61

  - by Halik

  I am trying to install Windows 7 Professional from USB 3.0 flashdrive, on a Thinkpad T61. The problem is, Thinkpads BIOS will not detect the flash drive as bootable medium, and won't allow to boot from it. What I did: Enabled USB BIOS Support in BIOS (it was on by default) In startup menu, added USB HDD to boot order (it has '-' sign in front of it) Created Windows 7 install media with UNetbootin, WinUSB (linux tool) dd and Grub4DOS. As you can tell, currently, I only have access to Linux machine to make the flashdrive. What happens: The T61 BIOS shows '-USB HDD' in boot order menu. The '-' sign suggests that the plugged flash drive is currently not bootable. The same flashdrive (with the same Windows image on it) is booting without any problems on a Dell D430 and Lenovo Y550. Also, Ubuntu 12.04 install USB created with Unetbootin shows as bootable ('+' sign in BIOS boot order menu) and boots from the F12 boot menu. Additional info thinkwiki.org says that some Thinkpad BIOSes do not use MBR on flashdrives. It suggests using Extended-IPL boot loader, but the provided links are broken and there seems to be no mirrors. Solution: http://superuser.com/a/430186/54970

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• How to edit known_hosts when several hosts share the same IP and DNS name?

  - by Frédéric Grosshans

  I regularly ssh into a computer which is a dual-boot OS X / Linux computer. The two OS instance do not share the same host key, so they can be seen as two host sharing the same IP and DNS. Let's say the IP is 192.168.0.9, and the names are hostname and hostname.domainname As far as I understood, the solution to be able to connect to the two host is to add them both to the ~/.ssh/know_hosts file. However, it is easier said than done, because the file is hashed, and has probably several entries per host (192.168.0.9, hostname, hostname.domainname). As a consequence, I have the following warning Warning: the ECDSA host key for 'hostname' differs from the key for the IP address '192.168.0.9' Is there an easy way to edit the known_hosts file, while keeping the hashes. For example, how can I find the lines corresponding to a given hostame? How can I generate the hashes for some known hosts? The ideal solution would allow me to connect to seamlessly to this computer with ssh, no matter whether I call it 192.168.0.9, hostname or hostname.domainname, nor if it uses its Linux hostkey or its OSX hostkey. However, I still want to receive a warning if there is a real man-in-the middle attack, i.e. if another key than these two is used.

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• Installing and running a guest OS on KVM-qemu with only serial console access

  - by nixnotwin

  I am trying to installing a bsd distro with virt-installer. With a Linux distro I used this: virt-install -n debian -r 1024 --vcpus=1 --accelerate -v --disk /var/kvm/installation-disks/debian.img,size=6--nographics --network=bridge:br0,model=ne2k_pci,mac=52:54:00:66:68:09 -l http://ftp.de.debian.org/debian/dists/squeeze/main/installer-amd64/current/images/ -x console=ttyS0,115200 This loads the installer directly from the online mirror. With Fedora I used this mirror: http://www.nic.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/16/Fedora/x86_64/os/ Are there such mirrors for freebsd or openbsd? The reason I want direct installable ftp/http mirrors is because I can access my physical server only via ssh, and it doesn't have a X server or a window manager to give me a VNC GUI. When I tried installing centos 6 with an online mirror I was able to finish the installation via serial console, but after I rebooted it, the serial console never worked for me. I tried everything possible---editing menu.lst, inttab and securtty files. Fedora 16 booted fine from serial console, but got stuck when it loaded anaconda installer. I tried editing freebsd iso installation media by adding serial console option to boot option. And installation was successful. But couldn't boot into it becuase it wasn't giving console acess. I couldn't edit any files as ufs partition cannot be loaded with write access on my Ubuntu server 10.04. Only debian squeeze worked well, it worked for me even without editing a single configuration file. I want to have CLI versions of fedora/centos and freebsd/openbsd. But, looks like there isn't any hope for me to have them, as I have to depend on a serial console to do everything.

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• AMD Fusion GPU passthrough to KVM or Xen

  - by BigChief

  Has anyone successfully gotten a passthrough working with the GPU portion of AMD's Fusion APUs (the E-350 is my target) on top of a Linux hypervisor? IE, I want to dedicate the GPU to one VM only, excluding all other VMs as well as the host. I know PCI passthrough can work with patches / kernel rebuilds for Xen and KVM. However, since the GPU is on the same chip, I don't know if the host OS will see it as PCI. I know there are a number of tangential issues here, such as: Poor Fusion drivers in Linux at the moment Unsuccessful patching efforts seem common VT-d / IOMMU is required and (from my reading) is supported on the APU, but the motherboard may not offer it KVM doesn't appear to support primary graphics cards, only secondary graphics cards (described here) However, I'd like to hear from anyone who has messed with this, even failed attempts. Fedora + KVM is my preferred virtualization platform but I'm willing to change that if it makes a difference. EDIT: The goal is to do this for a Windows 7 guest (I know it's asking a lot). Regardless, just assume this is HVM, not PV.

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• Uninstall php5 installed from source

  - by diegomichel

  I have tried to install php5 from source , and it worked... Then for some reason need to install the official packets, so i tried a make uninstall and for my surprise there is such make uninstall... so i tried delete all the installed files by hand. Then installed the official debian packages and it worked fine... till i need install sqlite module, which give me the following error: php --version PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/pdo_sqlite.so' - /usr/lib/php5/20090626/pdo_sqlite.so: undefined symbol: php_pdo_register_driver in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/sqlite.so' - /usr/lib/php5/20090626/sqlite.so: undefined symbol: php_pdo_register_driver in Unknown on line 0 PHP 5.3.1-5 with Suhosin-Patch (cli) (built: Feb 22 2010 22:46:05) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies So i remember that manual install i did, and i think there is some old lib installed causing that problem, the bad thing is that there is not such make uninstall on the source code of php5... php-5.2.13 > make uninstall make: *** No rule to make target `uninstall'. Stop. I have tried reinstall and purge all php related packages via aptitude with not success. OS: Debian Squeeze. uname -a Linux desktop 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 22:40:40 UTC 2010 x86_64 GNU/Linux Any idea how to fix that?

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• Collect temperature and fan speed with munin from Windows 7 PC?

  - by mfn

  Hi, I'm quite fond of munin and using it also at home to monitor my PCs. What was super-duper easy under Linux is pretty much unsolvable for me under Windows: I'd like to monitor CPU and Motherboard temperatures as well as fan speed. On Linux I'm using lm-sensors and the plugin for munin was basically there. I access already some information from my Windows machine via SNMP (disk space, CPU usage, memory usage); the graphs are simple as is the information exposed via SNMP, but they do their job. But when it comes to temperature and fan speed I'm running against a wall. My research so far resulted in that Windows does not by default provide out of the box ability to retrieve temperature/fan speed data. Third party applications are necessary which have know-how how to communicate with the Motherboard chips. The best I cam up with is that SpeedFan exposes a shared memory interface and there exists a library which hooks into Windows SNMP facility and bridges over to SpeedFans shared memory interface; it's called SFSNMP (site currently down). Unfortunately the library doesn't work, there's a bug report at SpeedFan open about it, but it's currently not moving (although the SFSNMP author is active there) . So, unless that's going to work like anytime soon, are there any alternatives? I'm not found of buying any software to get that feature, given that I take it as granted that my system exposes me the information to properly monitor it, but anyway don't just not answer because of this.

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• Nmap XML parsing with Powershell

  - by Craig620

  I am trying to parse the XML output from NMAP and isolate just the hostadddress and the vendor from the osmatch. I've actually done that with the following: select-xml -path nmap.xml -xpath "nmaprun/host/address/@addr|nmaprun/host/os/osmatch/osclass/@vendor" | select -expandproperty node Which produces: #text ----- 10.20.30.1 HP 10.20.30.2 Linux 10.20.30.3 HP What I was not expecting is that it would jam it all into a single column.Silly me would like the address in one column, and the vendor in another column. I Would like: #addr #vendor ----- ------- 10.20.30.1 HP 10.20.30.2 Linux 10.20.30.3 HP In the several hours I spent learning xpath today, I also realized that this file has a single address for each host, but multiple OS guesses for each host. I would also like to use only the first osGuess in the output. Tired using: -xpath "(nmaprun/host/os/osmatch/osclass/@vendor)[1]" But that truncates the whole data set to a single line of output, instead of only limiting the only the first osclass element of each host. Changing the parens to surround only the @vendor element like .../(@vendor)[1] and .../(@vendor[1]) but both fail with "Expression must evaluate to a node-set." Thanks in advance

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• How to set up GRUB2 chainloader to other Grub (Fedora, Debian) on GPT

  - by basic6

  I'm trying to set up a dedicated GRUB2 which (chain-)loads another GRUB on a disk with GPT partition table. Relevant partitions: /dev/sda1 BIOS_BOOT /dev/sda2 BOOT (ext2) /dev/sda3 FEDORA (ext4) /dev/sda6 DEBIAN (ext4) I installed Fedora first, using /dev/sda2 as boot partition. Then I installed Debian. The Debian installer recognized the Fedora installation and added it as boot entry, then installed its GRUB into the MBR. While this works for the moment, it's pretty messy, because every Debian update may change the boot config, removing the Fedora entry (tried it) and the other way around. That's why I want both systems to have their own boot loader and one main boot loader (that could reside on /dev/sda2), which loads one of them. This is what I've tried: Moved everything from /dev/sda2 to /dev/sda3/boot Removed /boot mount point in Fedora (so /dev/sda2 isn't used anymore) From a live Linux, installed GRUB2 to the MBR (grub-install --boot-directory=sda2 /dev/sda) Wrote a menu.lst: title Fedora root (hd0,2) chainloader +1 (Again, for Debian) Converted that to a grub.cfg script (grub-menu2cfg or something like that) When booting, actually got a GRUB2 menu with "Fedora" (and "Debian") When selecting any one of those: error: invalid signature Issued "grub-install /dev/sda6" (and ...sda3) from all kinds of live Linux systems, all of which failed with another error message (in the case of the Debian installer, without explanation at all) Added --force to the chainloader line, now it says "loading", then reboots Found douzens of howtos, none of which seem to work for me Since I get the self-made GRUB2 menu on bootup, I've at least successfully installed the first stage of GRUB, right? When trying to chainload, some signature is checked and seems to be wrong - how do I fix it? The boot menus (Fedora with its different Kernel versions and Debian with Debian and Fedora as well) are now on the system partitions (/dev/sda3, /dev/sda6), is there anything else to do on these partitions, so they can be chainloaded? Any help is greatly appreciated.

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• Windows 7 boot issues

  - by Michael

  Ok, I tried to install linux and dual boot my laptop with 7 ultimate. I messed up. When I tried to boot to 7 it said no. Something along the lines of device not found. So I being young and stupid I uninstalled linux which I could boot into, and I still could not boot to windows. Next step was to run the startup fixes from the boot cd. Swing and a miss, I also ran the fixmbr and fixboot. Which brings us up to my current place. I installed 7 again on my blank partition in hopes I could access my other partion. No dice. So my question to yall is how can I fix my original filesystem or at least get to the stuff on it. In the new 7 install the old partion does not even have a drive letter. That is my sad story any help would be apreciated.

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• Keyboard issue when using kitty+puttycyg but not when using putty or cygwin alone

  - by kamaradclimber

  I would like to use a unique way to use console on my windows setup. Previously I used putty for remote access to linux servers and cygwin to have unix-like tools on windows. Then I discovered kitty which is a patched putty and have added the puttycyg patch. It provides the same way to connect to remote and local console. However, there is a strange behavior using vim when connected to the local console (using the puttycyg patch) : keys display A/B/C/D and replace the current character by these letter. In insert mode it does replace the caracter, in normal mode, no modification is made to the document even if the caracter is displayed as replaced. For instance, when I type : fixed bug with product deleted I get : fixed bbug wiwith prprodudueleteted I have read a lot of questions about this type of issue 3, 4 and googled it but there is no answer that work for me. The issue is present only for the setup kitty+puttycyg patch : cygwin alone works perfectly (and putty alone works also for access to linux servers). Any help would be appreciated !

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• OpenVPN IPV6 Tunnel Radvd

  - by Arenstar

  Hello.. I have an interesting question regarding ipv6 + openvpn.. My Version is OpenVPN 2.1.1 i have been given a native /64 ipv6 network ( for this example 2001:acb:132:acb::/64 ) The plan was/is, route this block through openvpn and into an office ( for testing purposes ) Soo to explain.. I have a Centos Box as the first linux "router" in a datacenter & a Ubuntu box as the second linux "router" in the office I have created a simple point-to-point tunnel using tun ( based off ipv4 address to start the tunnel ) I have assigned to Centos /sbin/ip addr add fed1::1/128 dev eth0 /sbin/ip addr add fed2::2/128 dev tun0 /sbin/ip route add 2001:acb:132:acb::/64 dev tun0 ## ipv6 Block down the tunnel /sbin/ip route add ::/0 dev eth0 ## Default out to Gateway I have assigned to Ubuntu /sbin/ip addr add fed1::3/128 dev tun0 /sbin/ip addr add fed1::4/128 dev eth0 /sbin/ip route add 2001:acb:132:acb::/64 dev eth0 ## ipv6 Block down to eth0 /sbin/ip route add ::/0 dev tun0 ## Default up the tunnel I have also included on both servers.. sysctl -w net.inet6.ip6.forwarding=1 Looks Good... right??? Wrong.. :( I am not able to ping fed1::1 from fed1::4 (Ubuntu) (can ping :4,:3,:2) However, i can ping fed1::1 fed1::2 from :3 ?????? ( very strange ) I am able to access the internet from any ipv6 interface on the Centos Box but clearly not from the Ubuntu box.. Further, i will eventually run radvd on the Ubuntu box eth0, and autoconf the network with ipv6 address's Anyone with some advice / tips to help me out.. ??? Cheers

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• Mounting a VirtualBox shared folder on boot with fstab in OpenSuse 11.3

  - by ccook

  I have followed the steps found here, however, the share is not mounted on boot. The share will mount if i run 'mount -a' after booting. Why would the share not mount on boot? 1 - Set up a Virtual Machine and install OpenSUSE 11.2 2 - Create a shared folder on host (HostFolder) 3 - Setup the shared folder in Virtualbox Via the Virtual Machine details or via Devices Shared Folders... 4 - Install dependencies for running the Virtualbox installer You need to install the right development kernelpackage for your machinetype (use 'zypper search -i kernel' to see what's installed) sudo zypper install make gcc kernel-source kernel-hosttype/default-devel 5 - Run the Virtual Machine and go to Devices Guest Additions This mounts an iso image in your OpenSUSE guest. 6 - Open a root terminal and run cd /usr/src/linux make oldconfig && make prepare && make scripts && make dep cp ../linux-obj/$HOSTTYPE/default/Module.symvers . make prepare A commenter on previously mentioned thread says this step is unnecessary but it doesn't work without on my system. I suggest trying step 7 first and returning to step 6 if that fails. * 7 - Run ./VirtualboxLinux yourhosttype .run from the mounted iso image. 8 - Create shared folder in OpenSUSE (GuestFolder) 9 - Test with sudo mount -t vboxsf HostFolder /home/user/GuestFolder It works? Great! Let's set up the system so it automounts for your regular useraccount instead of root-only access. 10 - Add this line to /etc/fstab HostFolder /home/user/GuestFolder vboxsf defaults,uid=1000,gid=1000 0 0 11 - It works for me but if it still doesn't automount after a reboot; sudo mount -a

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• Cannot start Postgres daemon after installing with Yum

  - by Sean the Bean

  I was trying to install Postgres 9.1.4 on Fedora 17 using Yum. If I do: sudo yum install postgres-libs sudo yum install postgres sudo yum install postgis All the installs appear to complete successfully (i.e., no errors), but I cannot start the Postgres daemon using: service postgresql initdb Like the official Postgres download guide says to do (http://www.postgresql.org/download/linux/redhat/). The error says Unknown operation initdb. RPM tells me that it installed psql to /usr/bin/, which I confirmed. It turns out that only a few components installed correctly (psql, pg_dump, pg_configure, and a few others), but most are missing (e.g., pg_ctl and postgres). I've tried several different configurations and had several of my coworkers (with more linux experience than me) look at it, but so far nothing has worked. Two of them have also run into similar issues installing Postgres using apt-get on Ubuntu, which makes me think the rpm isn't doing its job. It seems the only solution to build it from source, which is more robust anyway, but of course it takes longer. I'm wondering, though, if anyone else has run into this issue and/or has successfully installed Postgres on either Fedora or Ubuntu using a package manager like yum or apt-get? Is the rpm broken?

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• Debugging apache seg fault with gdb

  - by Joyce Babu

  Apache on a production server of mine is seg faulting intermittently. I have enabled core dump option in apache configuration and have several dumped core files. Unfortunately, since it is a production server, apache or the loaded modules are not compiled with debug symbols. From what I understand, gdb cannot do much without debug symbols. Can I at least find out which module is causing the seg fault, without debug symbols? If so, how? Following is the output from a gdb backtrace (gdb) bt full #0 0xb7f1f832 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2 No symbol table info available. #1 0xb7be82bc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0 No symbol table info available. #2 0xb771652a in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #3 0xb75df576 in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #4 0xb7715c20 in ?? () from /usr/local/apache/modules/mod_pagespeed.so No symbol table info available. #5 0xb7be4a49 in start_thread () from /lib/libpthread.so.0 No symbol table info available. #6 0xb7b2a63e in clone () from /lib/libc.so.6 No symbol table info available. Does this mean that /lib/ld-linux.so.2 is causing the seg fault?

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• Unable to force Debian to do unattended install... libc6 wants interactive confirm

  - by JD Long

  I'm trying to create a script that forces a Debian Lenny install to install the latest version of CRAN R. During the install it appears libc6 is upgraded and the install wants interactive confirm that it's OK to restart three services (mysql, exim4, cron). This process HAS to be unattended as it runs on Amazon's Elastic Map Reduce (EMR) machines. But I'm running out of options. Here's a few things I've tried: This previous question appears to be exactly what I'm looking for. So I set up my install script as follows: # set my CRAN repos... yes, I know there's a new convention where to put these. echo "deb http://cran.r-project.org/bin/linux/debian lenny-cran/" | sudo tee -a /etc/apt/sources.list echo "deb-src http://cran.r-project.org/bin/linux/debian lenny-cran/" | sudo tee -a /etc/apt/sources.list # set the dpkg.cfg options per the previous SuperUser question echo "force-confold" | sudo tee -a /etc/dpkg/dpkg.cfg echo "force-confdef" | sudo tee -a /etc/dpkg/dpkg.cfg export DEBIAN_FRONTEND=noninteractive # add key to keyring so it doesn't complain gpg --keyserver pgp.mit.edu --recv-key 381BA480 gpg -a --export 381BA480 > jranke_cran.asc sudo apt-key add jranke_cran.asc sudo apt-get update # install the latest R sudo apt-get install --yes --force-yes r-base But this script hangs with the following request for input: OK, so I tried stopping the services using the following script: sudo /etc/init.d/mysql stop sudo /etc/init.d/exim4 stop sudo /etc/init.d/cron stop sudo apt-get install --yes --force-yes libc6 This does not work and the interactive screen comes back, but this time with only cron listed as the service that must be restarted. So is there a way to make libc6 just restart these services with no user input? Or is there a way to stop cron so it does not cause an interactive prompt? Maybe a creative option I've never thought of? Keep in mind that this system is brought up, some Hadoop code is run, and then it's torn down. So I can put up with side effects and bad behavior that we might not want in a production desktop machine or web server.

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• Software way to cool down an old MacBook Pro

  - by notMacBookProSuperUser

  Hi all, First a little background: I've got lots of computers, including Linux PCs and two MacBook Pro (and a MacMini). My concern is with my 'old' MacBookPro (Core Duo). It really does overheat. Warranty is long void. Years ago (I'd say 2.5 years ago or so) one day it overheated so bad that the battery inflated due to the heat. I got a new battery for free but it's still getting incredibly hot (much other than any other computer I've got: my newer Core 2 Duo MacBook Pro doesn't get nearly as hot as the old one. It s really a pain because I use my old MBP when I m in front of TV, having it on my lap, and it can really become unbearable. I don't want to open that old MBP. On Linux I can force a new CPU 'governor' that decides how the CPU is allowed to operate: it can be 'on demand', 'always max speed', 'always speed x', etc. Does the same exist under MacOS X? Is there a way, say if a 1.86 Ghz Core Duo can run at 1.6 Ghz, to ask MacOS X: "never run this CPU above 1.6 Ghz" ?

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• Help setting up an secondary authoritative DNS server.

  - by GLB03

  We have three Authoritative DNS servers and three recursive/caching DNS servers on my campus. Authoritative servers DNS1- Windows 2003 DNS2- Old Red Hat ----- Replacing w/ newer version DNS3- Windows 2008 (I installed) Caching and Recursive resolvers servers Server1- Windows 2003 Server2- CentOS 5.2 (I installed) Server3- CentOS 5.3 (I installed) I am replacing DNS2 with a newer Red Hat version, but have no documentation on how it was implemented. I have setup caching and windows authoritative servers, but not a linux secondary authoritative server. I have a perl script from the original server that pulls data from our DNS1 server. We use DJBDNS and TinyDNS on our linux servers. Our Network Engineer says the DNS2 server I am replacing is an authoritative server that doesn't need to be caching, but the only instructions I see is for an Authoritative server that does caching as well. Can someone point me in the right directions. I thought I was on the right track with using these instructions but when I query my new dns server I get "No response from server", I have temporarily disabled iptables to eliminate it from being an issue. ps -aux | grep dns avahi 3493 0.0 0.2 2600 1272 ? Ss Apr24 0:05 avahi-daemon: running [newdns2.local] root 5254 0.0 0.1 3920 680 pts/0 R+ 09:56 0:00 grep dns root 6451 0.0 0.0 1528 308 ? S Apr29 0:00 supervise tinydns dnslog 6454 0.0 0.0 1540 308 ? S Apr29 0:00 multilog t ./main tinydns 9269 0.0 0.0 1652 308 ? S Apr29 0:00 /usr/local/bin/tinydns

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• CloneZilla Broke My System? Ubunut Installation Lost After Running CloneZilla

  - by nicorellius

  I just read through this post and tried to get my installation back using this answer to no avail. What happened to me is this: I spent an hour or more reading through the CloneZilla docs. I thought I was ready to test it out so I burned the disc with the ISO image on it and ran it. The system I used was Ubuntu 10.04, 32-bit. Everything seemed to go fine. I made a clone of my first partition and copied it to my second partition. I followed the instructions, removed the disc and rebooted my system. At this point, I would expect to have two bootable Linux installations, identical to one another. However, upon booting, I got this error message: error: no such device: 4cf1a6ef-xxxx-xxxx-xxxx-4e3a3ce92bcd error: file not found I booted from a Live Ubuntu disc and was able to see my to partitions: 4cf1(1) and 4cf1(2) (abbreviated, because the volumes have long numbers to identify them). The 50 GB partition, on which the original Ubuntu installation sits is the number and the second partition (175 GB) is the same number with an "_" at the end. I could browse the disc partitions and see the files, but I'm not sure what to do next. I know there is a way to restore my grub loader and actually boot either of these installations, but my Linux know-how is limited. Can I edit the boot loader file to fix this problem? The only clue I have is CloneZilla said something about making a new GRUB but I thought it was going to basically modify it so I could boot either installation. Not sure what happened. I am going to look through this post for the time being to see if I can learn anything to help my problem. But I thought that, since this happened as a result of using CloneZilla, it may be a unique question for this board.

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• Win7 VM @ ESXi Server @ VMWorkstation (Win7) - ping works only from VM -> HostOS, not vice versa

  - by DK2000

  right now I'm toying around with VM Ware stuff and not having any pcs then my laptop I decided to run an ESXi Server inside of VWmware Workstation. I was just curios to see if the server would allow to setup and run a VM. And after some tweaking there it was, working like a charm. Okay not that fast but startin' the VM from vSphere and "opening a console" gave my direct access to that VM. Now I wanted to see if I could ping the host from the VM (VM Workstation Network is set to "host only"). And it worked, at least from the VM I could ping the ESXi server and the host. From the host I am able to ping the ESXi Server but I can't ping the VM! I asked myself anyway where the VM got its ip adress from. At the DCHPs IP there is at no machine after all. I even tried to use that DHCP adress for my Host and it didn't work out. You can see my settings from the screenshot here (it's pretty wide so just a link): http://yfrog.com/n4desktopfeop The only thing that got me thinking was when I once changed the ESXi's IP from 192.168.92.137 to 192.168.0.137. I still was able to connect to the ESXi server via its new IP but when I tried to run the VM console from vSphere I got an error after a while that said "couldnt connect to 192.168.92.137:903". So vSphere connects just through a port of the ESXi server to the VM?!? Could I setup a Linux VM to use it as a DHCP that I'd at least have control over the IPs that are given. Which lowest end linux could be used for this purpose?!? Thank you for your time! :)

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• Rename Active Directory domain following Windows 2000 -> 2008 migration.

  - by ewwhite

  I'm working with a site that needs an internal DNS domain rename. It currently has a DNS name of domain.abc.com and NT name of ABC. I'm trying to get to a DNS name of abctrading.com and NT name of ABCTRADING. Split DNS would be used. The site originally ran from a single Windows 2000 domain controller hosting AD, file, print, DHCP and DNS services. There was no Exchange system in the environment. The 50 client PCs are all Windows XP with a handful of users using roaming profiles. All users are in a single OU and there are no group policy/GPOs. I'm a Linux engineer, but have been trying to guide another group of consultants to reach a more suitable setup. With the help of this group, we were able to move the single Windows 2000 system to a set of Windows 2008 R2 servers separated into domain controller and file/print systems (virtualized). We are also trying to add an Exchange 2010 system to this mix. The Windows 2000 server was demoted and is no longer in the picture. This is the tricky part, as client wants the domain renamed and the consultants aren't quite sure how to get through it without another 32-40 hours of testing/implementation. THey say that there's considerable risk to do the rename without a completely isolated test environment. However, this rename has to be done before installing Exchange. So we're stuck at this point. I'd like to know what's involved in renaming the domain at this point. We're on Windows Server 2008. The AD is healthy now. Coming from a Linux background, it seems as though there should be a reasonable path to this. Also, since the original domain appears to be a child/subdomain, would that be a problem here. I'd appreciate any guidance.

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• What's the best way to completely remove everything from a computer, without re-installing?

  - by Connor W

  I have a friend who wants to sell their computer, but obviously all personal information and software that it is on it needs to be removed before doing so. Usually I would format and reinstall it, but I cannot easily get hold of the required XP DVDs and I'm not 100% sure the serial number is stuck on the case as usual so getting hold of it will probably require more effort than I'm prepared to spend. So, what's the best and quickest way to remove and uninstall everything from the PC without reinstalling it? Thanks. EDITS: I'm looking to remove things like Internet History and all installed programs, too. I know how to remove the history and each individual program, but that could take hours. The machine is not branded and therefore there is no website I can go to download recovery software. There is no recovery partition on the computer and I'm not aware of any recovery DVDs for it either. I can only assume it was installed from a retail copy, and therefore there is no way to recover it to factory settings. It needs to have XP installed, not any distribution of Linux. Like most average people, the person getting the computer will not understand what to do with a computer that doesn't have Windows installed, and software like Office does not work on Linux either. Buying another licence is not really an option either. She has just brought a laptop to replace the computer, so buying another licence for a computer that she's getting rid of doesn't really make sense. Thanks for all the help so far!

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• a VPS mail server

  - by microspino

  Hello I'm trying to substitute citadel on my Virtual Private Server with something more simple. I dislike their documentation and the webmail client. I don't need any groupware feature. I need only an MTA with a nice looking web interface, SPAM and VIRUS check. I recently found the lamson project from Zed Shaw. Is that production ready? Do you had any real and good experience with It? On the latest-news page I see that the last release dates december 2009. Sorry for my lack of knowledge, I'm really new to mail servers but I have to find a solution to manage sending and receiving mail on my VPS. I would accept also to build my VPS email server using a linux system like exim, postfix or whatever but I have really small needs and they will not grow in at least a year and i will be the only one user. I'm searching for something that I could build and manage easily, as I'm a novice linux sysadmin. Having also some good documentation or at least a robust step by step guide would be a plus.

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• All commands stopped working in centos 6.5

  - by Michael

  I have made a big mistake while removing some duplicate packages as it appears to be broken. yum 1036 rpm -e --nodeps glibc-2.12-1.132.el6_5.2.x86_64 1037 rpm -e --nodeps nscd-2.12-1.132.el6_5.2.x86_64 1038 rpm -e --nodeps glibc-common-2.12-1.132.el6_5.2.x86_64 1040 rpm -e --nodeps glibc-common-2.12-1.132.el6.x86_64 glibc-devel-2.12-1.132.el6.x86_64 glibc-headers-2.12-1.132.el6.x86_64 1041 rpm -e glibc.x86_64 1042 rpm -e --nodeps glibc.x86_64 The issue happened after doing 1042 step. None of commands work(including yum, rpm, ls, cp etc) and getting error /lib64/ld-linux-x86-64.so.2: bad ELF interpreter: No such file or directory I thought that installing glibc after removing all the current ones would help to resolve the duplicate package error :( Now I realised that it is used as the C library in the GNU system and most systems with the Linux kernel. It defines the "system calls" and other basic facilities such as open, malloc, printf, exit, etc. Is there any possible solutions other than reinstall? I have lost ssh access. Maybe anything can be done using rescue cd? Thanks

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• dpkg broken while upgrading Debian Etch to Lenny

  - by artvolk

  Good day! While trying to recover a box to lenny it seems I've broken things. It upgrades libc and glib after that dpkg seems to be broken. I can run apt-get, but it gets segmentation fault from dpkg: # apt-get -f install Reading package lists... Done Building dependency tree... Done 0 upgraded, 0 newly installed, 0 to remove and 316 not upgraded. 9 not fully installed or removed. Need to get 0B of archives. After unpacking 0B of additional disk space will be used. /bin/sh: line 1: 4606 Segmentation fault /usr/sbin/dpkg-preconfigure --apt E: Sub-process /usr/bin/dpkg received a segmentation fault. I can login via SSH but even ls is not working: # ls Segmentation fault Is there anything I can do remotelly via SSH? # ldd /bin/ls linux-gate.so.1 => (0xffffe000) librt.so.1 => /lib/tls/i686/cmov/librt.so.1 (0xb7fc8000) libacl.so.1 => /lib/libacl.so.1 (0xb7fc2000) libselinux.so.1 => /lib/libselinux.so.1 (0xb7fac000) libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb7e51000) libpthread.so.0 => /lib/tls/i686/cmov/libpthread.so.0 (0xb7e3f000) /lib/ld-linux.so.2 (0xb7fd8000) libattr.so.1 => /lib/libattr.so.1 (0xb7e3b000) libdl.so.2 => /lib/i686/cmov/libdl.so.2 (0xb7e37000) libsepol.so.1 => /lib/libsepol.so.1 (0xb7df6000) It seems I've temporary fixed it with: # touch /etc/ld.so.nohwcap From here: http://saintaardvarkthecarpeted.com/blog/archive/2005/08/_etc_ld_so_nohwcap.html

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• Weird PCI bug: lots of missed packets, or data comes in "bursts"

  - by Thomas O

  I have an ABIT KN9 motherboard. It has one PCI-e x16 slot, three PCI-e x4 slots and two legacy PCI. My problem is with the legacy PCI (which I shall just call "PCI".) I currently have an Nvidia GeForce 8600 GT (a low end card) installed in the x16 slot and a TV card in PCI #1; the x4 slots are unused, as is PCI #2. I plan to upgrade the graphics card soon, the current card was spare. I sometimes install a USB expander in PCI #2 but it causes a lot of problems - see below. The problem is under Linux (Ubuntu 10.10, Linux 2.6.35-22-generic), but probably under all operating systems (I have not yet been able to test Windows, but I suspect it will do the same as the problems occur on the BIOS/POST side too, e.g. when using a USB keyboard on the expander the keyboard will not work at all) PCI has an enourmous delay, and packets arrive in large chunks. For example, when using the USB expander, my USB mouse lags and jumps in large steps every second or so, while using the motherboard USB does not present this problem. My TV card will only do one or two frames per second, and the program (xawtv) usually times out and crashes. In dmesg, I'm getting messages like: bttv0: timeout: drop=74, irq=154/100476, risc=31f6256c, bits: VSYNC HSYNC OFLOW RISCI for my TV card, and similar timeout issues for my USB expander with a mouse. I received the motherboard, processor and RAM second hand and have only just got around to building it, so I don't know if this problem has always existed, or if it's a result of my set up. If anyone has any hints or solutions it would be appreciated - this is kind of a show-stopper for me.

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