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• Why a 10 years old software still is so slow even today?

  - by Cawas

  I just noted this question due to a game (which happens to be Diablo 2), but the matter of fact is: why is my brand new mac book pro, made in 2009 with latest technology (tho it's the cheapest one) can't rival my computer which used to run this much faster back in 2000? Really, it was much faster on my AMD K6 450 back in those days, and I could even run two clients at same time with no slow down. I've always had the feeling this machine was slow, but this is a very odd way to attest it. Granted, the machine is smaller, runs on wifi and "boots" way faster thanks to sleep mode. But other than that, what have we evolved after all?! I'm pretty sure this shouldn't be graphical card's fault. Sure if I buy latest technology it will run fast, and probably most people here can confirm this and won't even understand my question. But the thing is, all the hardware is supposedly much faster and better than the stuff from 10 years ago. The software and operating system became more complex, but also more well refined. Now I'm trying a piece of software that is actually 10 years old and it's not getting any better results! Why?

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• IIS Manager - Connect to Another Server (Win7 to Win2008 server)

  - by Matt

  I am running Windows 7 Ultimate. If I open up IIS Manager, I see a list of "connections" on the left hand side. In previous versions, I would be able to select an option to "connect to another server" or "connect to another machine", but there is no such option visible anywhere here. The only thing in the list is my local machine. Even in the address bar, if I manually type in the server location (\servername, even tried just servername), nothing happens (it just reverts back to my current local computer) The documentation at http://technet.microsoft.com/en-us/library/cc732466%28WS.10%29.aspx seems to imply the very same steps... but there is just no button or menu option anywhere to do this. Am I missing something? I'm not even seeing a grayed out menu option. EDIT: Under the "File" menu, I see 2 options: Save Connections (grayed out) Exit Under the "Connections" pane, I see 1 button, grayed out. When I hover the mouse, it simply says "Up", appears to be usable if I browse into an element in my local computers IIS settings If I right click inside the pane itself, I see Refresh Add website (to the current host) Start Stop Rename Switch to Content View UPDATE: I downloaded and installed the Remote Server Administration tools from http://www.microsoft.com/downloads/details.aspx?FamilyID=7D2F6AD7-656B-4313-A005-4E344E43997D&displaylang=en, and I enabled everything listed under "Remote Server Administration Tools" under "Turn Windows Features On or Off". Still nothing.

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• Struggling to set-up NLB cluster

  - by Chris W

  I'm trying to set up NLB on a couple of Windows 2008 R2 virtual servers running on top of Hyper V R2. The servers each have a single vNIC for LAN access (and a second vNIC for SAN access). I'm setting up the cluster to use Multicast mode. The vNICs are each set to allow MAC spoofing. Essentially I'm finding that i can add SERVER1 as a host and it will pick up and respond to the cluster IP from a remote subnet. If I then 'stop' the node in NLB manager it still responds when I would expect it to stop answering on that IP. If I recreate the cluster and add SERVER2 as the first host, the wizard completes correctly and an IPCONFIG on the server shows that it now has the cluster IP but I can't ping the cluster IP from a remote subnet but I can from another machine on the same subnet. As a final test - with both servers in the cluster, pinging from another machine on the same subnet I still get a response from the cluster IP when both nodes are stopped according to the NLB manager. The two VMs are sat on the same physical blade and are built up exactly the same as they'll be used as SharePoint web front end servers. I'm at a loss as to what could be wrong with the second VM that prevents it taking on the address just as the sole node in the cluster, never mind the strange behaviour of the cluster when I stop/start nodes.

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• Bare-metal virtualisation for the desktop

  - by Andrew Taylor

  Hi, Does anyone have any knowledge about bare-metal virtualisation products? I'm interested in building a new desktop machine for home, I've been looking at the Intel Quad Core processors and I'd like to put 8GB of RAM in there, but, it got me thinking about making the most out of the available resources. I thought if I could get a good 64bit machine, put some bare-metal virtualisation on, then have a primary system, I'd also be able to bring up some extra virtualised systems as and when I needed. I know most of the bare metal systems are designed for the server market, but, is there anything out there that works well for a desktop. What are the caveats? I presume I won't be able to make the most out of any video cards I could buy, what about just getting a decent screen resolution, will this be a problem? I run a single 24" screen. What about DVD/CD writing, is this possible? I'd like to re-rip my CD collection, I was hoping the quad 64Bit goodness would help me out with the encoding. I currently use a Mac and couldn't go back to windows so that leaves Linux, I was thinking a primary OS of ubuntu. Does this make a difference? Thanks Andrew

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• XP Client for NFS failure dialog on startup, but drive mapping works

  - by Matt Bennett

  I'm mounting an NFS share to some windows machines using the tools that come in the Services for UNIX Administration toolkit. I've set up the User Name Mapping service to use local passwd and group files. I had to manually start the User Name Mapping service, and then created an 'advanced map' from the XP machine's user to a uid that exists in on my NFS server, like so: Windows User: Matt Bennett UNIX Domain: PCNFS UNIX User: mattbennett UID: 10250 Primary: * I can map a network drive without any issues, and it correctly identifies the UID and GID to use, but when I reboot I get this message: "An error occurred while connecting to the NFS server. Make sure that the Client for NFS service has started. If the problem persists make sure Client for NFS service can communicate with User Name Mapping or PCNFS server." After dismissing the dialog, the machine finishes booting and the network drive is there in My Computer with the title "Disconnected Network Drive", but I can open it I can see the network share without a problem, and then it drops the 'disconnected' from its title. It seems like the services are starting in the wrong order or something, so the first attempt to connect fails but subsequent ones work as expected. There don't seem to be any symptoms apart from the dialog box, but obviously something's not quite right. What have I done wrong? Thanks, Matt.

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• IPSec for LAN traffic: Basic considerations?

  - by chris_l

  This is a follow-up to my Encrypting absolutely everything... question. Important: This is not about the more usual IPSec setup, where you want to encrypt traffic between two LANs. My basic goal is to encrypt all traffic within a small company's LAN. One solution could be IPSec. I have just started to learn about IPSec, and before I decide on using it and dive in more deeply, I'd like to get an overview of how this could look like. Is there good cross-platform support? It must work on Linux, MacOS X and Windows clients, Linux servers, and it shouldn't require expensive network hardware. Can I enable IPSec for an entire machine (so there can be no other traffic incoming/outgoing), or for a network interface, or is it determined by firewall settings for individual ports/...? Can I easily ban non-IPSec IP packets? And also "Mallory's evil" IPSec traffic that is signed by some key, but not ours? My ideal conception is to make it impossible to have any such IP traffic on the LAN. For LAN-internal traffic: I would choose "ESP with authentication (no AH)", AES-256, in "Transport mode". Is this a reasonable decision? For LAN-Internet traffic: How would it work with the internet gateway? Would I use "Tunnel mode" to create an IPSec tunnel from each machine to the gateway? Or could I also use "Transport mode" to the gateway? The reason I ask is, that the gateway would have to be able to decrypt packages coming from the LAN, so it will need the keys to do that. Is that possible, if the destination address isn't the gateway's address? Or would I have to use a proxy in this case? Is there anything else I should consider? I really just need a quick overview of these things, not very detailed instructions.

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• VMWare Newbie - looking for hardware recommendations and help :) [closed]

  - by Dan

  I am looking for some hardware recommendations on an upcoming virtualization project. We are a small company (80 users - 25 in site 1, 55 in site 2) currently using Windows Server 2003 - no VM servers yet. Our AD is setup where site 1 is the root domain and site 2 is a subdomain/subnet - connected by T1 and VPN for failover. The current DC's also server as file servers, print servers, AntiVirus servers. Email is in the cloud. Additionally then in site 1 we have 3 additional member servers - one running IBM Websphere for a customer specific app, one running Infor PowerLink (no real heavy load) and another that we use for Virtual Studio apps and also runs DirSync for Exchange Online. No heavy workloads on any of these machines really. We also have an AS400 box that we run ERP/CRM software on that site 2 connects to over the WAN link. In site 2 we also have a SQL machine that runs on Win2K server. Database files are not large less than 5 GB. Light to Medium workload on this machine. File servers in each site store less than 500 GB data and probably won't grow to more than 1TB in the next 5 years. I am looking to go to VMWare in both sites and virtualize all servers. What recommendations do you have for server, storage hardware? Is it safe to virtualize all of your DC's? Any help or advice would be greatly appreciated. Thanks.

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• how to automatically mount ~/Private using ecryptfs when logging in via ssh pubkey

  - by andreash

  Raionale: I want to be able to automatically make backups to a remote machine, which will be encrypted with ecryptfs. The title says it all: I set up ecryptfs-utils on my Debian Squeeze box, and set up one user to use it via ecryptfs-setup-private. When I log in via SSH using password authentication, the ~/Private directory automatically gets mounted. How can I achieve that ~/Private also automatically gets mounted when logging in via SSH using public key authentication? Obviously, the best solution would be if ecryptfs could somehow 'use' the SSH public key to en/decrypt the data (I know that then using the user's password would not be able to en/decrypt the data any more; this would be acceptable). Probably, this will not work. So perhaps somehow call ecryptfs-mount-private via ssh before logging in via public key? Probably, then I would need to somehow pipe the passphrase through the SSH connection, right? So I would need to store it on the source machine's file system. Not nice either. Any other ideas?

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• How to force a login for an administrator when using Remote Desktop Connection and fast user switching enabled?

  - by brett rogers

  Scenario: I am at work. I want to remote desktop into my machine at home. Problem is, my 5-year-old daughter is playing games on Starfall.com (or something similar) on her (non-admin) account. When I attempt to connect I see this message: Another user is currently logged on to this computer. If you continue, this user has to disconnect from this computer. Do you want to continue? I click Yes and then see Please wait for 'UserName' to respond This presents my daughter with an Allow/Disallow dialog on whether to let me connect. She clicks Disallow (or No or whatever it says) and then I see 'UserName' has denied your request Question: How can I force my account to log in and disconnect her session? Additional Info: My account is an administrator account. My daughter's account is a non-administrator account. Home machine is Windows 7 Pro with fast user switching enabled. Turning off fast user switching is not an option (Kyle pointed out in his answer that turning it off would allow the admin to force another user off). I would keep fast user switching's ability to change accounts without closing the previous account's session over being able to force myself to connect.

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• Outlook 2007 font sizes

  - by Flack

  Hello, Something really strange seems to have happened to my Outlook 2007. Everything was working fine for a long time now but at the end of today, all of a sudden, all of the fonts in Outlook are messed up. The font size of mails I write is huge (I am not zoomed in) and the font sizes of the buttons are big too, specifically the "Send", "To", and "Cc" buttons. I tried changing the font sizes through Outlook, but some of the buttons on the "Mail Format" tab in Options are not working, mainly the "Stationary and Fonts" button. I hit it but no window opens. This is all happening on my x64 machine. I took a look at my x32 machine, which also has Outlook 2007 installed and everything is ok there. Below is a link to an image comparing the broken, large font Outlook (top of picture) and the normal, working outlook. The text in the mails I compose is also abnormally large in the broken Outlook. Big font Outlook buttons. Any ideas? This came out of no where after a few months of no problems. Thanks.

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• Is there any special way to force GoBack to work with Windows Vista and 7?

  - by dfree

  Norton/Roxio's GoBack doesn't work with Vista/7 for reasons unknown. I have tried several alternatives (Norton Ghost, RollbackRX, Norton Save and Restore), none of which offer the same functionality as GoBack. Not only does GoBack not eat up all your hard drive space while creating a legitimate fail safe for any pc problems, it also allows you to see ACTIVELY EXACTLY WHAT PROCESS ARE BEING EXECUTED ON YOUR COMPUTER. This feature (called Advanced Disk Drive Restore) also allows you to troubleshoot problems and determine causes for things in about half a second by seeing what is happening on your machine. It's how I learned everything I know about computers. GoBack also features something called Safe Try Mode where you can put it in SafeTry and then mess up the whole computer and when you come out of it, your computer will be exactly how it was before. Amazing for people who like to tinker without risking their machine stability. It also helps for that accidentally erased paper or whatever you may have erased. I believe GoBack installs a type44 partition around the drive, which loads prior to windows to allow this functionality. If you're going to recommend another program, please don't (unless it does all of the above). I've tried all the competition and nothing is as good. I just want my GoBack to work with 7 :) Any ideas of crazy ways to make this work?

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• No signal on monitor after plug it to a linux box

  - by yaroot

  I use my old computer as an NAS, so I remove the monitor after I installed linux on it (disconnect vga cable). I use ssh to control the machine and it works fine. Until some day, after kernel/softare upgrade or messing up some configs, I cannot connect to it through ssh, then I have to plug the monitor back, but the monitor says "No input signal". So I have to restart the computer WITH the monitor connected, and the monitor's back! I think the computer/linux kernel doesn't detect the monitor plug-in event. So how can I start my linux box without a monitor, but when it goes wrong I can still plug my monitor (vga) back and use the console. Edit: just one pci-e video card, has dvi, vga, tv/out (s-video) Edit2: Xorg is not running. I just need the console (CTRL+ALT+F1). The problem is, if the machine booted without a monitor connected, it won't give me a pseudo terminal after I attach the vga cable while it's running. Clearly the monitor is not auto detected as usb device. I'm wondering how to let the monitor auto detected.

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• Vista WHS Client stopped resolving local names

  - by andrewcr

  I’m running Windows Home Server PP2 in my home, with 3 client computers: two XP and one Vista. I have a router that provides my local DHCP and the server has a static IP address. The other day the Vista machine hung, and on reboot stopped resolving local names. It will show the green home server client icon in the system tray, but if I attempt to log in to the console, I get a “This computer cannot connect to your home server” message. If I ping the server name from the command line, it does not resolve, and gives a “could not find host” message. Oddly enough, if I browse the network, I can see the server, but double clicking on it fails. The other machines on the local network have no problems seeing the server, and the Vista machine has no problems resolving names from the internet, it just can’t see any local machines. I’m aware that I can work around this by adding entries to my HOSTS file (it does work), but I’d like this to work the way it’s “supposed” to. I’m an experienced computer user and developer, but not a networking whiz. Can anyone tell me how local name resolution is supposed to work in my environment and/or suggest ways to troubleshoot this? Thanks, Andy

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• Problem posting multipart form data using Apache with mod_proxy to a mongrel instance

  - by Ryan E

  I am attempting to simulate my site's production environment as closely as I can on my local machine. This is a rails site that uses Apache w/ mod_proxy to forward requests to a mongrel cluster. On my Mac OSX Leopard machine, I have the default install of apache running and have configured a vhost to use mod_proxy to to forward requests to a local running mongrel instance on port 3000. <Proxy balancer://mongrel_cluster-development> BalancerMember http://127.0.0.1:3000 </Proxy> For the most part, this is working fine. I can browse my development site using the ServerName of the vhost I configured and can confirm that requests are being properly forwarded to the mongrel instance. However, there is a page on the site that has a multipart form that is used to upload an image to the server. When I post this form, there is a delay of about 5 minutes and the browser ultimately returns a Bad Request Your browser sent a request that this server could not understand. In the error log for my vhost: [Tue Sep 22 09:47:57 2009] [error] (70007)The timeout specified has expired: proxy: prefetch request body failed to 127.0.0.1:3000 (127.0.0.1) from ::1 () This same form works fine if I browse directly to the mongrel instance (http://127.0.0.1:3000). Anybody have any idea what the problem might be and how to fix it? If there is any important information that I neglected to include, post a comment, and I can add to this question. Note: Upon further investigation, this appears to be a problem specific to Safari. The form works fine in Firefox.

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• Apache ProxyPass with SSL

  - by BBonifield

  I have a QA setup that consists of multiple internal development servers and one world-accessible provisioning machine that is setup to proxy pass the web traffic. Everything works fine for non-SSL requests, but I'm having a hard time getting the SSL logic working as well. Here's a few example vhost blocks. <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev1.site.com </VirtualHost> <VirtualHost 192.168.168.101:443> ProxyPreserveHost On SSLProxyEngine On ProxyPass / https://192.168.168.111/ ServerName dev2.site.com </VirtualHost> <VirtualHost 192.168.168.101:80> ProxyPreserveHost On ProxyPass / http://192.168.168.111/ ServerName dev2.site.com </VirtualHost> I end up seeing the following error in the provisioner's error log. [Fri Jan 28 12:50:59 2011] [warn] [client 1.2.3.4] proxy: no HTTP 0.9 request (with no host line) on incoming request and preserve host set forcing hostname to be dev1.site.com for uri / As well as the following entry in the destination QA machine's access log. 192.168.168.101 - - [22/Feb/2011:08:34:56 -0600] "\x16\x03\x01 / HTTP/1.1" 301 326 "-" "-"

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• Virtualbox - differencing disk based on different differencing disk

  - by Klinki

  I'm trying to create differencing image based on differencing image in VirtualBox 4.2.18. Official documentation says it should be possible: http://www.virtualbox.org/manual/ch05.html#diffimages Basically I want to achieve this drive hierarchy: + immutable image with Debian and all software installed +---- differencing image with specific configuration, autoreset=off, readonly +-------- differencing image with autoreset=on +---- another differencing image for different virtual machine +-------- differencing image with autoreset=on I successfully created differencing image based on differencing image, but I'm not able to connect it to virtual machine :( It always shows error: Failed to open the hard disk .... cannot register hard disk ... because hard disk with UUID ... already exists Here is screenshot of Virtual Media Manager and error dialog Virtual Media Manager Window screenshot Very strange is that the new differencing image (tempdrive.vdi) doesn't have Actual Size 0. I wasn't able to connect it, but still, it has 36KB of data on it... This is very similar to this older question: How to create a chained differencing disk of another differencing disk in Virtual Box? but suggested solution is not working anymore in VirtualBox 4.2.18, so I posted it as a new question. (Limit for posting links and screenshots is quite annoying..)

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• What are best practices on virtual lab/test bed architecture?

  - by WooYek

  I am currently preparing a new small virtual environment for development and testing with Windows Server + SQL Server + AD + Sharepoint + Exchange + IIS(ASP.NET) + Biztalk + ?, for a small (up to 5) dev team. What are pros and cons on different approaches, eg. splitting up over different machines or packing everything up per machine. I your experience what are the best practices I should follow in terms of architecture and various system/servers placement. What to share and what to split per person. I would like to achieve some flexibility for the dev and testing process (so teammebers would not be steeping on each other's toes) and limit administrative effort needed to propagate settings, integrate work items and revert changes when something breaks up. It's not supposed to be an everyday development working environment, more a tier 2 developer testing environment, and not yet an integration or QA testing environment with formal change process. IMO the two borderline solutions are: creating one all-inclusive machine for each dev team member giving them freedom to manage creating shared environment managed by the one with somehow formalized change request process What golden mean would you recommend, and why?

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• CIFS mounted drive setting "stick-bit" on all files, cannot change permissions or modify files

  - by mattmcmanus

  I have a folder mounted on an Ubuntu 8.10 sever through cifs that I simply cannot change the permissions on once mounted. Here is a breakdown of what's going on: All files within the mounted folder automatically have their permissions set to -rwxrwSrwx regardless of whether the file is create on the windows server or on the linux machine. I have the same directory mounted on two other linux servers (both running 9.10 instead of 8.10) with no problems at all. They all are using the same fstab options and the same credentials. //server/folder /media/backups cifs credentials=/etc/samba/.arcadia_cred,noexec,noserverino 0 0 I've I run a chmod command a million different ways, all of which report successfully changing the permissions. However it doesn't. The issue began after I updated from 8.04 to 8.10 Any idea why this may be happening on one machine? Since it started after an upgrade I'm not sure what is the bes thing to do. Any help you could give would great! None of my automated backup scripts are working because of this!

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• Ubuntu server or Debian server (to run C++ apps developed on Ubuntu)

  - by skyeagle

  I have written a number of C++ server side daemons for my website, using my Ubuntu 9.10 dev machine. The C++ apps I mentioned above are "GUI-less" daemons (and libraries used by the daemons). I am now about to host my website and need to decide whether to go with Debian server or Ubuntu server. In a nutshell, here is the situation: I developed on Ubuntu desktop because I preferred the more friendly GUI I would like to deploy on Debian Server because of the (perceived?) robustness of the Debian server over Ubuntu server (I may be totally wrong here - and in fact, this is really what this question is all about) If Debian server is indeed more robust than Ubuntu server, then I have no choice but to go with Debian server - BUT, will my Ubuntu developed C++ apps run on the server? (or do I need to recompile them on the server? (I'd HATE to have to do this, because I want to keep the server machine clean and light - no GUI, no dev tools etc). This last question is really about binary compatability between Ubuntu and Debian. I want the server to be robust, secure and stable, and simply act as a server (i.e. LAMP and very little else - no GUI etc). Given that requirement, and the fact that I need to run my C++ apps (developed on Ubuntu 9.10), I need advice on which OS to choose for the server. Ideally, any advice will be backed with a reason. I am particularly interested in hearing from people who have been in an identical situation, or done something similar.

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• Can I setup a test server and then transfer everything to a diff. production server?

  - by Justin

  Hello, I am going to be setting up a "real" server, but it's not being shipped for another week. I was planning on setting up most of the server's functionality using an extra workstation I have. I wanted to set-up Windows Server 2003 or 2008, IIS, Terminal Services, Firewall, and Antivirus on this regular machine. I'd also be installing software like Winzip and VMWare that'll be used on the server. I can't ghost the machine, as far as I've done in the past, because the motherboard/cpu/etc. will all be different. Is there any way to export all of the "server settings" or something like that so I can move everything from test to production? Is there any software out there that does something similar to this? Some things I'm going to have to wait on such as setting up the file server completely in its raid configuration, but I'd like to get the simple server stuff and network setup out of the way. Has anyone done this before? Do I need software, open-source or not, to do this? Or maybe there's a way to export all the server settings in some way? Thanks in advance! Justin

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• Error in Apache: /var/run/apache2 not found

  - by Julen

  This is more self-answered question but since it drove me crazy I would like to share with the community and maybe someone can tell me why it happened or what it caused. The thing is I wanted to install in my Ubuntu 10.4 machine a CGI app, one built in the samples that come with the gSOAP toolkit. My intention was to access those from ASP .NET machine. Regular Ubuntu does not come with Apache so I install it from Sypnatic. Pretty easy. I followed this How to Install Apache2 webserver with PHP,CGI and Perl Support in Ubuntu Server. Instead of apache.conf I tweaked httpd.conf since a college here used that file instead of the first to put his Apache running. Besides I was able to access his CGI from my ASP .NET but mysteriously I could not from mine, I was getting always "The request failed with HTTP status 503: Service Temporarily Unavailable". Checking Apache error.log I found these messages: No such file or directory: unable to connect to cgi daemon after multiple tries: /home/julen/htdocs/cgi-bin/calcserver And looking more carefully whenever I restarted Apache I got this other message No such file or directory: Couldn't bind unix domain socket /var/run/apache2/cgisock. cgid daemon failed to initialize I am pretty new with Ubuntu and I could not think that Apache and Synaptic made a mistake in the installation process of the server, but it is true that the /var/run/apache2 was missing whereas in my college's computer was not. I tried to find and "elegant" solution but I found a post from 2006 that had an slight reference to it. Finally I decided to create the folder myself (as root) and then everything worked fine. Hope this helps others if they encounter a similar problem. Still I have the doubt why the folders was not created in the first place. Best, Julen.

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• Windows 7 Folder Redirection (GPO)

  - by Kev

  I have been fighting this issue for a day or two now, so I am looking for some insight. I am taking over admin duties in a domain of 800 users, and the previous admins really did not employ much of any GPO settings for the clients of the Domain. In each site, there is a location on the file server where "Home" folders were manually created. EX: \server\home\enduser Whenever a user got a machine, the admin would manually right-click on the "My Documents" folder and manually enter the path to the home folder. We are planning to start putting Windows 7 machines on the Network, and I am wanting to automate as much as I can, everything that was not done in the past. Since everyone has exising "Home" folders I have been fighting and trying to get Folder Redirection to work with a new Windows 7 machine (In a Test OU). I am getting all kinds of errors and I can't get the Windows 7 "Documents" folder to redirect to the users EXISTING home folders. As I stated earlier, all of the Home folders were (and still are) manually created on the File Server and are set with the following Security permissions - Domain Admins - Full Control euser (end user) - Modify (Everything but Full) Can someone point me in the right direction on the proper setting to put in the Folder Redirection GPO to get this to work with the Existing Home folders.

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• mount nfs subdirectory and still apply parent directory permissions

  - by Christophe Drevet

  A NFS server exports : /export/home computers /export/cont1 computers On the filesystem, there are these permissions : $ ls -al /export/cont1 drwxr-x--- 6 root group1 4096 2010-05-04 10:57 . drwxrwxrwx 5 root root 4096 2010-05-07 14:52 .. drwxrwxrwx 2 root root 4096 2010-05-06 20:33 .snapshot drwxr-xr-x 2 user1 group1 4096 2010-05-04 10:57 user1 drwxr-xr-x 2 user2 group1 4096 2010-05-04 10:57 user2 drwxr-xr-x 2 user3 group1 4096 2010-05-04 10:57 user3 So that user4, which is in not in the group1 can't access this directory and its subdirectories. Now, on its client machine, this user can do : $ sudo mount server:/export/cont1/user3 /mnt/temp and then access the directory without permissions on /export/cont1 : $ id uid=7943(user4) gid=7943(user4) groupes=1189(group4) $ ls -al /mnt/temp/ drwxr-xr-x 3 user3 group1 4096 2010-05-04 10:57 . drwxr-xr-x 7 root root 4096 2010-05-04 11:02 .. -rw-r--r-- 1 user3 group1 6 2010-05-04 10:56 README Is there a way to apply /export/cont1 permissions even if it is not mounted ? The goal is to enable users to mount /home/user3 and only access it if they can access /export/cont1 on the nfs server. Said in another way : how can I allow a machine to mount /export/cont1/user3 and still don't allow user4 to access it. Maybe NFSv4 and Kerberos can help ?

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• Where to get grub files without using grub-install

  - by Jacky

  I am in a particular situation. I have a MacBook Pro with no internal CD drive and both MacOS X (minimal setup) and Linux (my main system) is installed. During a cross-upgrade to Ubuntu 12.04 I messed up grub, so that my /boot/grub directory is basically empty. This means I can't boot Linux on the laptop anymore but only get into grub rescue. Normally this is no issue as you'd just boot from a rescue CD or USB stick, but unfortunately with a MacBook Pro this is not possible (I have reFIT installed and it attempts to boot, but it fails and the manual says that Apple's EFI firmware is not able to handle this situation). From MacOS X, however, I still have write access to the Linux partition. I've now been trying to figure out how to populate the /boot/grub folder with the necessary files, to no avail so far. The ISO image of Ubuntu 12.04 contains an EFI folder which is not what I am looking for, instead I need the normal.mod files for the grub version of Ubuntu 12.04. I do not have any other machine to set up a virtual machine of Ubuntu 12.04 to extract this from after a grub-install, so I am asking for ideas here how to solve this mess. P.S.: I installed the Linux previously when I still had a working internal CD drive. This is gone now.

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• Issues with creating a snapshot

  - by Andy Welcomer

  Hello everyone, We have a strange issue when attempting to create a snapshot in one of our regional environments. We have 4 VMs, 2 of them have mulitple VMDKs spread onto different datastores. When a snapshot is created, all the VMDKs (except for the first), seem to vanish. If you look at the properties of the VM, the path to the VMDKS points to the datastore where the primary VMDK is, and the file name is some random garbage. If the snapshot is deleted everything returns to normal. Has anyone ever seen this? I'm using ESX3.5 Thank you in advance. Andy ==============UPDATE============== Here is some more information. I just created a test machine with 7 VMDKs. 1 for the OS. and 6 others for data. All of the VMDKs are in seperate datastores. I take a snapshot of the machine, all of the 6 VMDKs loose their reference to the actual VMDK files. The all point to 64KB VMDK files in the datastore where the OS VMDK is located. These 64KB vmdks didn't exist until the snapshot was taken. When the snapshot is deleted, everything goes back to normal.

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