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• Linux HA cluster w/Xen, Heartbeat, Pacemaker. domU does not failover to secondary node

  - by Kendall

  I am having the followig problem with an OenSuSE + Heartbeat + Pacemaker + Xen HA cluster: when the node a Xen domU is running on is "dead" the Xen domU running on it is not restarted on the second node. The cluster is setup with two nodes, each running OpenSuSE-11.3, Heartbeat 3.0, and Pacemaker 1.0 in CRM mode. For storage I am using a LUN on an iSCSI SAN device; the LUN is formatted with OCFS2 and managed with LVM. The Xen domU has two logical volumes; one for root and the other for swap. I am using IPMI cards for STONITH devices, and a dedicated ethernet link for heartbeat communications. The ha.cf file is as follows: keepalive 1 deadtime 10 warntime 5 udpport 694 ucast eth1 auto_failback off node dhcp-166 node stage use_logd yes crm yes My resources look as follows: shocrm(live)configure# show node $id="5c1aa924-bba4-4f95-a367-6c9a58ac4a38" dhcp-166 node $id="cebc92eb-af24-4833-aaf0-672adf80b58e" stage primitive Xen-Util ocf:heartbeat:Xen \ meta target-role="Started" \ operations $id="Xen-Util-operations" \ op start interval="0" timeout="60" start-delay="0" \ op stop interval="0" timeout="120" \ params xmfile="/etc/xen/vm/xen-util" primitive my-stonith stonith:external/ipmi \ params hostname="dhcp-166" ipaddr="192.168.3.106" userid="ADMIN" passwd="xxx" \ op monitor interval="2m" timeout="60s" primitive my-stonith2 stonith:external/ipmi \ params hostname="stage" ipaddr="192.168.3.105" userid="ADMIN" passwd="xxx" \ op monitor interval="2m" timeout="60s" property $id="cib-bootstrap-options" \ dc-version="1.0.9-89bd754939df5150de7cd76835f98fe90851b677" \ cluster-infrastructure="Heartbeat" The Xen domU config file is as follows: name = "xen-util" bootloader = "/usr/lib/xen/boot/domUloader.py" #bootargs = "xvda1:/vmlinuz-xen,/initrd-xen" bootargs = "--entry=xvda1:/boot/vmlinuz-xen,/boot/initrd-xen" memory = 4096 disk = [ 'phy:vg_xen/xen-util-root,xvda1,w', 'phy:vg_xen/xen-util-swap,xvda2,w', ] root = "/dev/xvda1" vif = [ 'mac=00:16:3e:42:42:06' ] #vfb = [ 'type=vnc,vncunused=0,vnclisten=192.168.3.172' ] extra = "" Say domU "Xen-Util" is running on node "stage"; if "stage" goes down, "Xen-Util" does not restart on node "dhcp-166". It seems to want to try as an "xm list" will show it for a few seconds and if you "xm console xen-util" it will give a message like "copying /boot/kernel.gz from xvda1 to /var/lib/xen/tmp/kernel.a53gs for booting". However, it never gets past that, eventually gives up, and no longer appears in "xm list". Now, when node "stage" comes back online after being power cycled, it detects that "Xen-Util" isn't running, and starts it (on stage). I've tried starting "Xen-Util" on node "dhcp-166" without the cluster running, and it works fine. No problems. So, I know it works in that respect. Any ideas? Thanks!

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• WordPress: can't access WordPress.com and other external sites?

  - by Rax Olgud

  Hello, I recently started a WordPress blog using hosting at MyDomain (they offer the application "natively"). The blog works fine, however I have two plugins I can't seem to install correctly. First, the WordPress.com Stats plugin requires the API Key. When I input it, I get the following message: Error from last API Key attempt: Your blog was unable to connect to WordPress.com. Please ask your host for help. (transport error - could not open socket: 110 Connection timed out) Second, the Akismet plugin is not configured. When I go to Akismet page to insert my API key, it has the following message: There was a problem connecting to the Akismet server. Please check your server configuration. I assume the two issues are related... I approached my hosting provider about the subject and all they said is that they don't support WordPress, only provide means to install it. To clarify, up to this point I have only been able to install plugins that don't require an API key. What can I do to diagnose the problem and fix it? As a work-around, are there comparable stats and anti-spam plugins that don't require an API key? Many thanks.

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• Firefox 3.5.6 causes entire computer to freeze

  - by Anthony Aziz

  Here's the situation: Environment: Just installed a fresh copy of Win7 Pro 32-bit to NTFS partition on 750GB SATA drive Hardware: E8400 3GHz ASUS P5QL Pro 4GB DDR2 1066 RAM EVGA 9800 GTX+ Plenty of cooling, no problems with hardware before Data is stored on a separate partition, including My Documents No security software is yet installed No extensions installed yet Problem: While using Firefox, sometimes the entire computer will freeze/hang. I get no mouse or keyboard input, can't CTRL+ALT+DEL, no "not responding" indication, just a static image on my display. My drivers are all up to date as far as I'm aware (I just installed this copy of Windows last week). I first noticed this when trying to install Xmarks. I went to the Xmarks site and tried to install and it would freeze. I managed to get it installed (Safe mode and the Mozilla addon site worked), but when I go to configure it (log in, etc), the computer freezes. I don't think it's a matter of usage time or memory issues, because while testing, I browsed wallpaper galleries for about 30 minutes, sometimes as many as 12-15 tabs open at a time, without issue. Sometimes I won't even try to install Xmarks at it will hang. I can install (some) other extensions, the only one I've tried is download status bar (which works). What I've done to try to fix: Restarted (duh) Windows safe mode Completely remove Firefox and install it to a new directory, according to Mozilla's KB (I haven't tried the profile manager, though I assume this does the same thing, except perhaps more thoroughly) Some BIOS changes, including Power options, disabling oveclocking (it was a modest overclock on the CPU, which has run Win7 beta and RC for almost a year now) Memtest Used another Windows user profile, same tragic results I'm STUCK now, with no idea what to do. I'm using Chrome as my main browser at the moment, but that's not something I want to be stuck with. I like Firefox and want to use it. I'm going to try creating a new profile first. One thing I did notice: I started leaving task manager and performance monitor open when anticipating (but dreading) a freeze. firefox.exe had low CPU and low memory, but it looked like overall disk usage was seeing some spikes on the small graph Performance Monitor gives you. I saw on one blog post a fellow using XP moved his Local Settings directory from a separate drive to his main drive, and that solved it, but I don't think my AppData directory is on my D: drive, and that's on the same physical device anyways. Still, something that might be worth trying. I'd extremely appreciate any help. Thanks very much. I really don't want to reinstall Windows from scratch again :( Anthony Aziz

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• Why are UDP messages from outside the network received but not delivered?

  - by Warren Pena

  I have an Ubuntu Server 10.04 application I've developed that receives messages over a UDP port. The ultimate purpose of this application is to receive messages sent from workers' 3G modems out in the field. If use netcat on either another ubuntu Server or my Vista laptop (both on the same LAN as my test machine) to send a message, the message arrives correctly and appears in my application. However, if I go out to my car and use its 3G modem to send a message from the same Vista laptop, it doesn't work. If I run tcpdump -A, I see the message arrive correctly, but it's never delivered to my application. Clearly, the OS is the one making the choice not to deliver the messages (else they wouldn't appear in tcpdump nor would my app receive them when coming from local machines). I have not installed any firewall software on this machine, nor am I aware of anything installed by default that would block the traffic. sudo iptables --list returns Chain INPUT (policy ACCEPT) target prot opt source destination Chain FORWARD (policy ACCEPT) target prot opt source destination Chain OUTPUT (policy ACCEPT) target prot opt source destination I'm not too familiar with iptables, but it looks to me like that's telling it to not do anything. What could be going on that's preventing my messages from being delivered?

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• ASDIEdit Cleanup After Exchange 2003 Crash During Transition To Exchange 2010

  - by ThaKidd

  Hello all. I would value some input from a few experts. I have almost completed the transition from Exchange 2003 Standard to Exchange 2010 Standard. Everything went smoothly until I tried to uninstall Exchange 2003. At that point the server bit the dust and died completely. I now have NO access to the old Exchange System Management MMC as I am running Windows 2008 SR2 and Windows 7 only. I can only fix this with ASDIEdit, EMShell, and EMConsole. I have used the 2010 shell to move/remove/verify that all mailboxes, public folders and OAB are hosted on Exchange 2010. I also verified that the routing connector has been deleted. The only two things that were not done was to remove the Recipient Update Service and actually perform the removal of the 2003 software. I have spent a lot of time going through ASDIedit and have located the old Administrative Group and the Exchange 2003 server listed under it. I also located the Recipient Update Service which includes two entries; Enterprise and my domain name. I have read that it is an unwise idea to remove the old administrative group so I won't bother messing with that. I am repeatedly getting three warnings in the Application Log. Both are from MSExchangeTransport EventID 5006 (Cannot find route to Mailbox Server OLDSERVER) and 5020 (The topology doesn't contain a route to Exchange 2000 Server or Exchange Server 2003) So my questions are: To clean out AD of the old Exchange 2003 info, can I delete the server name folder (Configuration - Services - Microsoft Exchange - ExchOrg - Administrative Groups - First Administrative Group - Servers - Old Server) and also delete the Update Recipient Service (Enterprise) and Update Recipient Service (DOMAIN) containers safely? Are there any additional items I need to address to ensure the AD is clean? Thanks in advance for your help!

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• Windows Server 2008 Stops Responding (Hyper-V Role Enabled)

  - by blackf0rk

  The machine is a brand new Dell Precision m6500, Core i5, 8GB RAM. Windows Server 2008 R2 (fully patched) with Hyper-V Role Enabled. Virtualization options in the BIOS are ON, SpeedStep is OFF, couldn't find C1E option in the BIOS to turn it off (I also got the impression that SpeedStep is C1E, but the Intel Product site lists them as separate "features." shrug) The server stops responding without any apparent reason. I've tried testing in multiple scenarios, all of which result in a crash at seemingly random times: With the Server sitting idle, no apps running. Server sitting idle with a Virtual Machine running. Using a BurnInTest application There's no blue screen. It doesn't restart. The screen just sits there. The keyboard backlight still responds and comes on with input, but nothing on the screen changes. There are no errors in the error log. I have to hold down the power button to turn it off. Doing memory tests on bootup results in no errors with the memory. I have a second identical system and the same thing happens there too. I've dual-booted into Windows 7 Profession x64 on this system with no problems. Further testing has shown that the issue is definitely related to Windows Server 2008 R2 and Hyper-V as it appears the crashing does not happen when the services are not running. I've installed all hotfixes relating to this issue (that I could find): 975530, 979444, 979491, 976427 System is still crashing without response.

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• What is causing random hard freezes on my system? Kaspersky?

  - by Christian Ivicevic

  The last few weeks I experienced a new strange behavior of my computer. Sometimes Windows 7 just freezes with no real reason at all. While listening to music for example the playback hangs and you can hear a very nasty sound. Neither mouse nor keyboard input is handled and everything is just stuck. Using Ubuntu this does not happen, so I think it is just a matter of driver issues or a Windows 7 bug. Furthermore I am really suspicious about Kaspersky (Internet Security 11) and so I let it perform a complete virus scan while no other app is running. At about 50% it happened again and I needed to restart the computer by holding the power button the bad way... A really weird thing is that playing Skyrim this happened once, however music playback did not stop. Only the framerate dropped to 0 and sometimes for a few seconds I am able to move. Therefore I am really confused as furthermore no bluescreen pops up. Memtest told me that everything seems to be alright... Can anyone explain me which data you need about my hardware and software (and which tools tools to use to gather the informatik) to be able to provide any help on my problem?

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• Accidentally Removed Permissions for the XP SP3 Registry key HKEY_CLASSES_ROOT! Workaround Please!

  - by Praveen Kumar

  This is Praveen and I am using Microsoft Windows XP SP3 Build 2600. I had problems with using Microsoft Office 2010. It was keeping on saying, "Please wait while windows configures Microsoft Office Professional Plus 2010". After seeing this link: http://social.answers.microsoft.com/Forums/en-US/outlookcontact/thread/6e9c3f2e-010a-4b74-b433-0c41548ee468?prof=required I thought of giving the Registry Key: HKEY_CLASSES_ROOT, full access permissions for Everyone. I went to the registry, right-clicked on HKEY_CLASSES_ROOT and clicked on Permissions. I added Everyone and gave Full Control to the ACL and clicked on Apply. Also I checked "Replace permission entries on all child objects with entries shown here that apply to child objects." After a long time, it said with an error, cannot replace for few entries. Now, the key, HKEY_CLASSES_ROOT has no access to any user. My system is not starting up. Some of my friends asked me to try the Last Known Good Configuration. Even that did not work out. When I tried to open in the Safe Mode, I got only one driver to load and even that didn't load well. Another friend suggested me to put the Setup disk and reinstall the OS. I tried that and after completing the "Installing Device Drivers" part, when it started "Installing Network", the system is getting restarted. Now, the setup is also half way through and even if I open in Safe Mode to try System Restore, it popped up a message saying, "Setup cannot run under Safe Mode. Setup will restart now." and the system is restarting. All my official files and my software, which I developed for Registry Security, resides in my system now. I am unable to access the system and I want it to be working to submit the project, as the deadline is this week. I had no better solutions from elsewhere. Can anyone please help me out with this issue. If it is possible to open the registry editor's stored file from another system and restore the access permissions, I hope it would solve the problem. Please do help me. Thanking You, Praveen.

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• Asus P5Q doesn't post at all

  - by Sebi

  I had a very strange incident this evening. I was watching TV on the computer and suddenly the sound stutter. Some seconds later, the screen went black. First I thought ok some error, don't worry. Since the computer didn't react on any input from the mouse or keyboard, I shutted it down by pressing the power button. I tried to reboot but the monitor rest black. All the fans were running, the MB didn't made a beep and the leds are all green as they have to be. The HDD is running too, also the monitor is on. But nothing happens, not even a single message on the screen, just black. Here are the things I already tried with no success: tried to boot with 1 of two rams (each tested alone) turned off all power (pull th plug) for 10 minutes tested the graphic card with another pc. there it worked. tested the RAM with another pc. there it worked. Any hints what to do next?

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• Need an expert advice on *X display manager, window manager and composit manager combination

  - by fakemustache

  Hello! I have fought with myself whether or not i should ask this question but I find myself stuck and I need another expert opinion. I can't seem find the right combination of display and window manager (and composit manager). I have tried so many different combinations but most of them don't work for me. I have been working with Linux for a few years now and currently I'm running Gentoo with GDM, Openbox(stand alone, Gnome aware) and xcompmgr. But I have tried Metacity, Awesome and Fluxbox with and without Compiz, but always with GDM. What I want: A lightweight, HIGHLY configurable environment that doesn't rely on mouse-input too much (except for web browsing and image processing). At 95% I work with multiple consoles and desktops on multiple screens. What makes me ask is that most lightweight environments seem somewhat "unfinished" and show unexpected behavior quite often. And of course I want an environment that's not TOO ugly to look at as I use it at an average of 10 hours a day. :) Any thoughts? What do you use in a similar situation? Thanks for any advice! (Please excuse my english as I'm from Germany, btw greetings from Berlin ;)))

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• IIS URL Rewrite HTTP to HTTPS with Port

  - by Andy Arismendi

  My website has two bindings: 1000 and 1443 (port 80/443 are in use by another website on the same IIS instance). Port 1000 is HTTP, port 1443 is HTTPS. What I want to do is redirect any incoming request using "htt p://server:1000" to "htt ps://server:1443". I'm playing around with IIS 7 rewrite module 2.0 but I'm banging my head against the wall. Any insight is appreciated! BTW the rewrite configuration below works great with a site that has an HTTP binding on port 80 and HTTPS binding on port 443, but it doesn't work with my ports. P.S. My URLs intentionally have spaces because the 'spam prevention mechanism' kicked in. For some reason google login doesn't work anymore so I had to create an OpenID account (No Script could be the culprit). I'm not sure how to get XML to display nicely so I added spaces after the opening brackets. < ?xml version="1.0" encoding="utf-8"? < configuration < system.webServer < rewrite < rules < rule name="HTTP to HTTPS redirect" stopProcessing="true" < match url="(.*)" / < conditions trackAllCaptures="true" < add input="{HTTPS}" pattern="off" / < /conditions < action type="Redirect" redirectType="Found" url="htt ps: // {HTTP_HOST}/{R:1}" / < /rule < /rules < /rewrite < /system.webServer < /configuration

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• HAProxy + NodeJS gets stuck on TCP Retransmission

  - by sled

  I have a HAProxy + NodeJS + Rails Setup, I use the NodeJS Server for file upload purposes. The problem I'm facing is that if I'm uploading through haproxy to nodejs and a "TCP (Fast) Retransmission" occurs because of a lost packet the TX rate on the client drops to zero for about 5-10 secs and gets flooded with TCP Retransmissions. This does not occur if I upload to NodeJS directly (TCP Retransmission happens too but it doesn't get stuck with dozens of retransmission attempts). My test setup is a simple HTML4 FORM (method POST) with a single file input field. The NodeJS Server only reads the incoming data and does nothing else. I've tested this on multiple machines, networks, browsers, always the same issue. Here's a TCP Traffic Dump from the client while uploading a file: ..... TCP 1506 [TCP segment of a reassembled PDU] >> everything is uploading fine until: TCP 1506 [TCP Fast Retransmission] [TCP segment of a reassembled PDU] TCP 66 [TCP Dup ACK 7392#1] 63265 > http [ACK] Seq=4844161 Ack=1 Win=524280 Len=0 TSval=657047088 TSecr=79373730 TCP 1506 [TCP Retransmission] [TCP segment of a reassembled PDU] >> the last message is repeated about 50 times for >>5-10 secs<< (TX drops to 0 on client, RX drops to 0 on server) TCP 1506 [TCP segment of a reassembled PDU] >> upload continues until the next TCP Fast Retransmission and the same thing happens again The haproxy.conf (haproxy v1.4.18 stable) is the following: global log 127.0.0.1 local1 debug maxconn 4096 # Total Max Connections. This is dependent on ulimit nbproc 2 defaults log global mode http option httplog option tcplog frontend http-in bind *:80 timeout client 6000 acl is_websocket path_beg /node/ use_backend node_backend if is_websocket default_backend app_backend # Rails Server (via nginx+passenger) backend app_backend option httpclose option forwardfor timeout server 30000 timeout connect 4000 server app1 127.0.0.1:3000 # node.js backend node_backend reqrep ^([^\ ]*)\ /node/(.*) \1\ /\2 option httpclose option forwardfor timeout queue 5000 timeout server 6000 timeout connect 5000 server node1 127.0.0.1:3200 weight 1 maxconn 4096 Thanks for reading! :) Simon

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• WebSeal and jsp content updated by Ajax

  - by lior chaga

  Hey, I have a problem running an application on environment with WebSeal. It is a web application with Java server that contains many parts that are replcaed within the page according to user input. For instance - a form called Outer.jsp may contain a form:options combo-box (by spring-forms), that uppon selection of an option, a certain Div is updated with a content produced by a jsp and fetched by an Ajax call (the ajax impementation in the client is done by Prototype JavaScript framework 1.5.1.2). Let's call the content fetched by ajax - Inner.jsp So Outer.jsp is fetching Inner.jsp, which in turn uses js functions in files included by the Outer.jsp. This, I think, is where my problem starts - Inner.jsp is not familiar with any of the functions included in Outer.jsp. And so, almost any operation performed by Inner.jsp is failing miserably. Needless to say - this works perfect when running on environment without WebSeal. Note that the scripting is enabled in WebSeal junction (with the -J option). I also see that the content returned by the Ajax call includes a document.cookie added by WebSeal (not sure it matters to this problem) Can anyone assist? Thanks! Lior

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• Virtual Machines Renaming/Backing up/Sharing

  - by evan

  I've started using VMware virtual machines for all of my software development projects and have a few questions for others doing the same thing. First, how can you rename the virtual machine and the name of the virtual hard drive? I have a base development machine that I clone for different projects. I'd like to name the machine and it's hard drive according the the project (right now when I copy them via cut and paste, the file names remain the same and I can only organize them by putting them in a specific directory). Second, what is the best way to back up a virtual machine? Is it possible (by breaking the virtual hard drive up into chunks instead of one big file) to get incremental backups working? It seems time machine always tries to make a copy of the whole thing which is time consuming because each virtual machine is around 30GB. Finally, how slow would it be to have a virtual machine shared on an NFS mount on a wireless N network and used from multiple computers (but with only one person using it at a time.) Would it be more reasonable on a gigabit lan connection? Thanks for your input! And please feel free to share any advice or wisdom about using virtual machines for software development and the best ways to speed them up!

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• How to create a Windows 7 installation usb media from linux ? (to install Windows 7) - Help need to know better method

  - by Abel Coto

  I have been reading some web pages and posts here and in other forums about how to create a Windows 7 installation Usb media (to install windows 7 using a usb) from linux. I asked in technet about this , and they give me general ideas about how to do it I personally am not very familiar with linux, but basicaly all that you need to do... in whatever way you do it is the following: Format a usb flash drive, either fat32 or ntfs create a partition that is large enough to host the windows installation (give or take 3GB for 64bit, aroudn 2.5gb for 32bit) and mark that partition as active/bootable. Since this can be done with windows, but just as well with a tool like gparted, you should be able to do the same in debian. Once you have created that partition, mount the iso that you download, and copy all files starting from the root, into the root of the usb flash drive. That's all there's to it. There is a method that i found in various places,that is almost the same that the man of technet has said. But,there is a step,that in that method is done,that i don't know if it is really necessary,or not. Not allways dd works.Basically, the missing step was to write a proper boot sector to the usb stick, which can be done from linux with ms-sys. This works with the Win7 retail version. Here is the complete rundown again: Install ms-sys Check what device your usb media is asigned - here we will assume it is /dev/sdb. Delete all partitions, create a new one taking up all the space, set type to NTFS, and set it bootable: *# cfdisk /dev/sdb* Create NTFS filesystem: *# mkfs.ntfs -f /dev/sdb1* Mount iso and usb media: *# mount -o loop win7.iso /mnt/iso # mount /dev/sdb1 /mnt/usb* Copy over all files: *# cp -r /mnt/iso/* /mnt/usb/* Write Windows 7 MBR on usb stick: *# ms-sys -7 /dev/sdb* ...and you're done. Shouldn't the usb work without doing the last step "# ms-sys -7 /dev/sdb" or to make the usb bootable , is a must , not only to mark the partition as bootable ? Would be better use rsync instead of cp -r ? All this steps should be done as root, i suppose , or if not , chmod to 664 and chown the directories where are mounted the usb and the iso, no ? But i suppose that the easier thing is to copy the data as root , and that this will not affect to the data. Has anyone tried this method or some similar like copying the iso with dd ?

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• Ububtu server 12.04 auto installation freezes at kickseeding running if ks.cfg has post scripts

  - by john206

  I'm trying to make a custom Ubuntu Server iso file. Kickstart file (ks.cfg) runs smooth when there is no %post in the file and Ubuntu installs correctly with ks configuration. Installation finishes installing base, apt, grub and It echos: Kickseed Running... and it freezes @ 0% I thought may be apt-get update doesnt work in ks file, I tried to install other apps like apache2 but no luck I have created dozen iso images and installed them in Virtual Box.I have been googling for 3 days and checked out ubuntu forums but haven't figured out the issue. I appreciate your help. This is how I made the iso image. My ks.file and txt.cfg files located in isolinux directory: root@ubuntu:/home/work mount -o loop ubuntu-12.04-amd64.iso original-iso/ rsync -a original-iso/ custom-iso/ cp ks.cfg custom-iso/isolinux/ cp txt.cfg custom-iso/isolinux/ chmod -R 777 custom-iso/ #Creating Iso image mkisofs -D -r -V “$IMAGE_NAME” -cache-inodes -J -l -b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o ~/ubuntu-12.04-alternate-custom-amd64.iso custom-iso/ ks.cfg #Generated by Kickstart Configurator #platform=AMD64 or Intel EM64T #System language lang en_US #Language modules to install langsupport en_US #System keyboard keyboard us #System mouse mouse #System timezone timezone America/Los_Angeles #Root password rootpw --iscrypted somethingsomething #Initial user user ubuntu --fullname "ubuntu" --iscrypted --password somethingsomething. #Reboot after installation reboot #Use text mode install text #Install OS instead of upgrade install #Use CDROM installation media cdrom #System bootloader configuration bootloader --location=mbr #Clear the Master Boot Record zerombr yes #Partition clearing information clearpart --all --initlabel #Disk partitioning information part /boot --size 128 --fstype=ext3 --asprimary part / --size 512 --fstype=ext3 --asprimary part swap --size 512 part /tmp --size 512 --fstype=ext3 part /var --size 512 --fstype=ext3 part /usr --size 4096 --fstype=ext3 part /home --size 2048 --fstype=ext3 #System authorization infomation auth --useshadow --enablemd5 #Network information network --bootproto=dhcp --device=eth0 #Firewall configuration firewall --disabled --http --ftp --ssh #X Window System configuration information xconfig --depth=32 --resolution=1024x768 --defaultdesktop=GNOME %post apt-get update mkdir /home/user txt.cfg default autoinstall label autoinstall menu label ^Install Custom Ubuntu Server kernel /install/vmlinuz append file=/cdrom/preseed/ubuntu-server.seed initrd=/install/initrd.gz quiet ks=cdrom:/isolinux/ks.cfg -- label install menu label ^Install Ubuntu Server kernel /install/vmlinuz append file=/cdrom/preseed/ubuntu-server.seed vga=788 initrd=/install/initrd.gz quiet -- label cloud menu label ^Multiple server install with MAAS kernel /install/vmlinuz append modules=maas-enlist-udeb vga=788 initrd=/install/initrd.gz quiet -- label check menu label ^Check disc for defects kernel /install/vmlinuz append MENU=/bin/cdrom-checker-menu vga=788 initrd=/install/initrd.gz quiet -- label memtest menu label Test ^memory kernel /install/mt86plus label hd menu label ^Boot from first hard disk localboot 0x80

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• How to reinstall Mac OS X on OS X/Linux dual-boot system?

  - by strangeronyourtrain

  My setup: I have a MacBook Pro 5,5 with a Mac OS X Snow Leopard partition and a Linux partition. I use rEFIt to boot into Linux. I didn't use Boot Camp when I originally installed Linux; instead, I manually created the partition (with either Disk Utility in OS X or Gparted on a Linux live CD--I don't recall which one) and then installed Linux on it from a live CD. The problem: My OS X partition is corrupt, and I need to reinstall Snow Leopard. Since I installed rEFIt from within OS X, I'm concerned that wiping the OS X partition will prevent me from booting into my Linux partition. How can I do this without losing access to my Linux partition? Is it possible to install Snow Leopard on the partition I reserved for it, or will it automatically overwrite the entire drive? And if I do the fresh OS X install and then install rEFIt again, will it automatically recognize my Linux partition? Thanks for any tips! Specs: MacBook Pro 5,5 (Mid-2009); Snow Leopard 10.6.7/64-bit Sabayon Linux, 2.6.36 kernel EDIT/UPDATE: Thanks, but the situation has taken a more complicated turn: I tried to reinstall Snow Leopard from the DVD, but it refused to install onto my Mac partition, claiming: "The disk cannot be used to start up your computer." Disk Utility wouldn't let me resize the partition or create a new one, and it doesn't see my Linux partition. It only displays the two partitions "Macintosh HD" and Linux Swap. I can, however, see all the partitions from Linux. This is the partition table as shown in Gparted: And the output of "fdisk -l" is: WARNING: GPT (GUID Partition Table) detected on '/dev/sda'! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda: 250.1 GB, 250059350016 bytes 255 heads, 63 sectors/track, 30401 cylinders, total 488397168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 409639 204819+ ee GPT /dev/sda2 409640 349590464 174590412+ af HFS / HFS+ /dev/sda3 483122745 488392064 2634660 82 Linux swap / Solaris /dev/sda4 * 349590465 483122744 66766140 83 Linux Partition table entries are not in disk order I wonder if this is because I originally partitioned my disk with Gparted instead of OS X's Disk Utility (at this point, I don't recall whether I used Gparted or Disk Utility). In any case, it doesn't seem safe to do any reformatting with Disk Utility now, as I'm afraid it will wipe sda2 ("Macintosh HD") as well as sda4 (my Linux partition). So... I'm hoping to find a solution that doesn't involve wiping my entire hard disk. Would it be safe/possible to use Gparted to erase sda2 ("Macintosh HD") and then use the Snow Leopard DVD to install OS X onto [I]just[/I] sda2 without touching the other partitions? Thanks for any insight!

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• snort with barnyard2 not working on Fedora 12

  - by aHunter

  Has anyone come across this error with barnyard2 and snort? --== Initializing Barnyard2 ==-- Initializing Input Plugins! Initializing Output Plugins! Parsing config file "/etc/snort/barnyard2.conf" Log directory = /var/log/barnyard2 database: compiled support for (mysql) database: configured to use mysql database: schema version = 107 database: host = localhost database: user = test database: database name = snort database: sensor name = localhost:eth0 database: sensor id = 1 database: data encoding = hex database: detail level = full database: ignore_bpf = no database: using the "log" facility --== Initialization Complete ==-- ______ -*> Barnyard2 <*- / ,,_ \ Version 2.1.8 (Build 251) |o" )~| By the SecurixLive.com Team: http://www.securixlive.com/about.php + '''' + (C) Copyright 2008-2010 SecurixLive. Snort by Martin Roesch & The Snort Team: http://www.snort.org/team.html (C) Copyright 1998-2007 Sourcefire Inc., et al. WARNING: Ignoring corrupt/truncated waldofile '/var/log/snort/barnyard.waldo' Opened spool file '/var/log/snort/snort.log.1282004944' ERROR: Unknown record type read: 104 Fatal Error, Quitting.. Snort seems to be working correctly as I have managed to get logs via syslog but when I try to use the barnyard config via Unified2 it is not working. Presumably because of the above error. Thanks in advance.

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• Help building maya render node spec

  - by Ak

  Hi there, I'm looking to build 4x Maya render slaves/nodes for a friend of mine when his project gets green lit. The project involves MentalRay and lots of glass. I'm unsure if the new i7's 9xx or 8xx with hyper threading will do any better than a core 2 quad of the same (or close enough) speed. Does hyper threading make a difference to Maya or is it more performance per core based? I'm sure he's prefer I'd build another render node than pay for a bleeding edge CPU that only adds fractionly more GHz. -- The rest of the spec so far: 4Gb - 8Gb ram 64 bit OS: Probably Windows 7 (I know Linux is free, but want to build something my friend can support himself as easily as he supports his own workstation) 1TB HDD to hold textures, Maya files and renders which will be copied to central storage later Mobo with on-board video, gigabit NIC 500 - 650 watt PSU Desktop case something like a: Cooler Master ATCS 840 The machines will sold afterwards if necessary. -- If anyone has had experience in Maya and has done any tests with the new CPUs vs. the older ones I'd really appreciate your input.

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• Blocking requests from specific IPs using IIS Rewrite module

  - by Thomas Levesque

  I'm trying to block a range of IP that is sending tons of spam to my blog. I can't use the solution described here because it's a shared hosting and I can't change anything to the server configuration. I only have access to a few options in Remote IIS. I see that the URL Rewrite module has an option to block requests, so I tried to use it. My rule is as follows in web.config: <rule name="BlockSpam" enabled="true" stopProcessing="true"> <match url=".*" /> <conditions logicalGrouping="MatchAll" trackAllCaptures="false"> <add input="{REMOTE_ADDR}" pattern="10\.0\.146\.23[0-9]" ignoreCase="false" /> </conditions> <action type="CustomResponse" statusCode="403" /> </rule> Unfortunately, if I put it at the end of the rewrite rules, it doesn't seem to block anything... and if I put it at the start of the list, it blocks everything! It looks like the condition isn't taken into account. In the UI, the stopProcessing option is not visible and is true by default. Changing it to false in web.config doesn't seem to have any effect. I'm not sure what to do now... any ideas?

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• Perl TDS character sets

  - by skiphoppy

  I'm using the FreeTDS driver with DBD::Sybase, connecting to an MS SQL Server. When I query certain values of certain records, I get this error: DBD::Sybase::st fetchrow_arrayref failed: OpenClient message: LAYER = (0) ORIGIN = (0) SEVERITY = (9) NUMBER = (99) Server , database Message String: WARNING! Some character(s) could not be converted into client's character set. Unconverted bytes were changed to question marks ('?'). This seems to happen for records that contain special Windows character-set characters, such as curly quotes, copied and pasted from people's Outlook and Word messages. Unfortunately, I do not have any control of this database; sanitizing the input on the way in is obviously the way to go, but is not available to me. What FreeTDS settings do I need to change to be able to successfully query these records? Additional information: The query works fine from tsql. I only get this error through Perl's DBD::Sybase interface. (Should I test through something else? I don't have the expertise yet to install PHP or Python. I've got jTDS and can use it, but I think that's a completely different implementation, not an interface to FreeTDS.) Adding client charset = UTF-8 to my freetds.conf file results in "Out of memory!" printed to STDERR.

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• Computer speakers receive radio station signal

  - by squircle

  I have a set of Logitech 5.1 speakers where each speaker and the source plug into the subwoofer. I'm using a Griffin Firewave with output from my MacBook Pro, and output from my custom-built desktop with a switch in the middle (built it myself out of an old Belkin A/B parallel switch). Recently, I've noticed that I can hear a local Punjabi radio station being picked up by my speakers, and the volume of this interference increases as I increase the volume of the speakers. I'm fairly sure that this radio station is at the low-end of the FM spectrum, below 90MHz (or it may be at the high end, above 105MHz, my memory isn't infallible). It gets quite annoying as I can't put my audio very loud without the interference. I've tried to put a ferrite core on the input cable just before the 3.5mm jacks plug into the subwoofer. I don't know if putting the same core around all three of the cables (green, black, orange) would negate the effects, but I'm assuming not. There has been no change. Is there any reason why this would be happening? I'm assuming the interference is coming somewhere between the FireWave and the subwoofer, because the noise gets amplified with volume increases. If anybody has any suggestions, I'd be grateful!

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• NAT, iptables and problematic ports

  - by Rajie

  I am building a small office network with virtual machines. My schema is this: Computer A: gateway, ip 1.1.1.1, iptables used for NAT [eth0=public internet dhcp, dhcp; eth1=gateway] Computer B: client, ip 1.1.1.2, using gateway from Computer A. NAT is working, and Computer B can access the internet using the A's gateway. I redirected some incoming ports from A to B (for instance, if A receives a request to port 80, it goes automatically to Computer B's Apache). The thing is that I do not really understand how to open/close ports for Computer B from Computer A. I know how to close a port: iptables -A INPUT -p tcp --dport 80 -j DROP And it will refuse all incoming (not output) connections to port 80. However, this works for main interface eth0. I tried to, for instance, drop ingoing and outgoing connections for Computer B, port 80: iptables -A FORWARD -i eth1 -o eth0 -p tcp --dport 80 -j DROP iptables -A FORWARD -i eth0 -o eth1 -p tcp --dport 80 -j DROP But it does not work. And I cannot figure out what I am doing wrong. Any clue?

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• IIS7.5 Outbound Rule for lower case URLs in <a href="...">

  - by Quog

  Hi, I know how to canonicalise the case of URLs on incoming request to IIS7.5, in fact, there's a built in rule template to start from. But how about outbound (without changing the code)? This is where I got to so far: <outboundRules> <rule name="Outbound lowercase" preCondition="IsHTML" enabled="true"> <match filterByTags="A" pattern="[A-Z]" ignoreCase="false" /> <action type="Rewrite" value="{ToLower:{R:0}}" /> </rule> <preConditions> <preCondition name="IsHTML"> <add input="{RESPONSE_CONTENT_TYPE}" pattern="^text/html" /> </preCondition> </preConditions> </outboundRules> However, IIS barfs on the action with a 500 implying an invalid web.config, probably on the {ToLower:XXXX} which I stole from the MS-supplied inbound rule template. Anyone know how to do this? Anyone know where the options are fully documented (my GoogleNinja skills failed me: I found this but "Specifies value syntax for the rule. This element is available only for the Rewrite action type" is not really comprehensive). Thanks, Damian

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• switchless Infiniband between two servers on RHEL 6.3

  - by exfizik

  I have 2 servers running RHEL 6.3 which have 2 port Infiniband cards >lspci | grep -i infini 07:00.0 InfiniBand: QLogic Corp. IBA7322 QDR InfiniBand HCA (rev 02) I'm interested in connecting them directly to each other bypassing an Infiniband switch (which I don't have). Quick googling showed that at least in some configurations it's possible. I installed all RedHat Infiniband packages with yum groupinstall "Infiniband Support". However, ibv_devinfo shows that both ports in each card are down, which indicates that cables are not connected. But the cable is connected, although the LEDs are off on the cards (not a good sign). Another source of confusion for me is that according to this, RedHat doesn't come with OFED packages and I'm slightly hesitant to install them from source due to the lack of RedHat support for them... So where am I going with this? The questions I have are: is it possible to have a switchless/direct Infiniband connection between two servers the way I described above? If it's possible, do I have to use the OFED packages or can I configure everything with just the packages coming with RHEL. Why are the LEDs off on my servers even though the cable is connected? Any additional input/advice/pointers would be appreciated. P.S. I followed this guide for installation instructions. The Infiniband cards are clearly recognized by my OS and the rdma service is running. Update: I have opensm installed. When I run it it says: OpenSM 3.3.13 Command Line Arguments: Log File: /var/log/opensm.log ------------------------------------------------- OpenSM 3.3.13 Entering DISCOVERING state Using default GUID 0x1175000076e4c8 SM port is down and stays at that point.

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