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  • When to use Nginx PHP Fast CGI with a TCP socket instead of a UNIX socket?

    - by user64204
    I've followed this guide to setup PHP in FastCGI mode with Nginx. This guide describes 2 ways of doing it: TCP socket and UNIX socket. I've ran some Apache Benchmark on my locale machine and here are the results: Below tests ran multiple times to get better average statistics: $ ab -c 200 -n 100000 http://.... APACHE: 1800 req/sec NGINX (TCP socket): 2500 req/sec NGINX (UNIX socket): 15000 req/sec As far as I understand, there is overhead with using a TCP socket rather than a UNIX socket, hence the better performance with the latter. However I was not expecting such a performance difference given that the TCP socket is on the localhost, and therefore would like to ask the following question: Q: Given the huge performance gain with using a UNIX socket, what are the configuration scenarios where it would make sense to use a TCP socket instead?

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  • Arch Linux shows a blinking cursor instead of a booting installer

    - by fakedrake
    Arch Linux shows a blinking cursor instead of a booting installer. I ran sudo dd if=archlinux-2010.05-core-i686.iso of=/dev/sdb1 and checked the MD5 sums. I tried to boot it on two different PCs and got the same result: instead of booting GRUB — or anything useful, for that matter — it just showed a blinking cursor at the top left corner of the screen. The machines became unresponsive to any kind of input, the flash drive LED didn't seem to blink or shiver at all and there seemed to be no other activity whatsoever. I tried using another flash drive, but the machine completely ignored it, booting Windows "normally."

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  • Streaming video in Virtualbox jumpy

    - by Kevin
    I am trying to get Netflix to work on my Ubuntu netbook. I know it will not run in Linux so I am trying it in my Win XP virtual machine. It streams the video but the sound and video are out of sync and the video often freezes and jumps. I have tried Firefox, Chrome, and even IE. I am thinking my Atom N455 processor does not work well with virtualization. All other apps in the VM work fine. The only issue is streaming [YouTube is jumpy too].Does anyone know of Virtualbox settings I can try to possibly fix this issue or am I out of luck?

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  • Ping, firewall or DNS issue on Win Server 2008 R2

    - by Fred Kaiser
    I've installed windows server 2008 as a VM for the developers here to work on. Installed SQL Server 2008 as well as IIS7. I am not quite sure why, I can remote into that machine using the name I gave to it (winserverdev) but the guys that are supposed to use the bloody thing can't. One very interesting thing is that I can connect but I can't ping... not the name nor the IP address. Is there anything that I should be looking in order to make it work? Any ideas are welcome. Thanks heaps in advance, I really appreciate it.

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  • PC won't post after replacing mobo

    - by Dan
    I am trying to fix an older HP desktop (~2 yrs old) that didn't seem to have video working. The video card on the machine was integrated. After some debugging, it looked to be the mobo, so I went out and got a new one (also with integrated video). Now, it pretty much does the same thing. Here's the symptoms: no video, doesn't post at all, fans DO spin (both chasis and CPU). Any other ideas? I suppose it could be the CPU, but I would think if it was, it would at least post.

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  • Is there any danger in disabling windows firewall on a azure worker role?

    - by NullReference
    I'm trying to troubleshoot a bug on our Azure worker role where we occasionally get the error "Unable to read data from the transport connection: An established connection was aborted by the software in your host machine". This error occurs when we are connecting to outside resources like google auth servers. A few people have recommended disabling the firewall\antivirus on the server. I'm just wondering what kind of security risk we would take by doing this. The server doesn't have iis installed but would it be vulnerable to hacking without the firewall? Thanks

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  • Configure Raid On Red Hat 5

    - by Sopolin
    Hi all, I have a problem with configure raid on red hat enterprise linux. The problem is when I create raid on two hard disks. It works successfully but after I remove one hard disk. It works normally. It means that I plug in one hard disk for testing configure raid. But after that I put both hard disks and create other file. The raid is cleared. My question is: Why do I turn off server machine, it clears raid that I configure first time before I turn off? Could anyone help to solve this problem? Thank, Ung Sopolin

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  • How do you debug why Windows is slow?

    - by aaron
    I've got Vista Biz and when my machine chugs I think it is because of paging, but I never know how to verify this. Procexp doesn't seem to provide useful information because it appears that nothing is going on when the chugs happen. perfmon seems like it has the counters I need, but I'm never sure what counters I should add to cover the information I want. For perfmon, I prefer numbers that are percents, so I can gauge load. Here are the counters I have up, but they don't always seem to correlate to chugs: - % disk time (logical) - page faults/sec (an indicator of lots of paging activity) - processor/%priviliged time

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  • Font rendering in Internet Explorer vs other browsers on Windows XP

    - by Ben McCormack
    I have four browsers installed on my Windows XP SP3 machine: Internet Explorer 8, Firefox 3.5, Safari 4, and Google Chrome. For whatever reason, fonts appeared to be rendered differently in IE than in the other browsers. It seems the fonts are anti-aliased in IE but not in the others. Why might this be? Is this an issue with the browsers or my operating system? I've noticed this issue on several Windows XP machines that I've used. While it may seem like no big deal, the lack of font smoothing in the other browsers keeps me from using them as my primary browser. Most importantly, what can I do to get the other browsers to render fonts smoothly?

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  • Are you ready to take a walk in the clouds?

    - by Steve Loethen
    Cloud computing is here, whether we want it or not.  When I say "a walk in the clouds” I am not talking about a pleasant romantic comedy, but a real alternative to hosting applications on-premise.  For years we have had the power to host our web sites on remote systems.  Sure, challenges existed.  Mostly web sites.  I could, with a few clicks, create a account at a myriad of web host sites, put my site in the hands of a remote hosting company, and boom, I was a site on the internet.  But choices, power, and management was limited. Now, we have a set of services to let us approach and power and control we love, but with scalability of the data center.  My personal web site is hosted on a laptop running hyperV in my basement.  I have to manage the machine, patch it, make sure it is powered up.  This is fine for the “hello, this is my dog skippy site” that I maintain. If the football pool I run has an issue, one of the 10 users I have calls or emails me and I go check it out.  All is well. But this falls well below the needs of even the simplest of enterprises.  A business needs a stronger datacenter, a better pipe to the world.  Do I really want to base my business on a dynamic dns and a dsl line from the local phone company? Cloud computing gives us most of what I value (control, a db of my own, updating my site from Visual Studio). Come learn how this technology can transform your business.  If you are a Microsoft shop, or are interested in Microsoft in the cloud, on April 8 and 9, a 2 day free Azure training class is being conducted in Kansas City.  http://www.azurebootcamp.com/city/kansascity Hope to see you there.  If you come, make sure you look me up.

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  • Technicolor TG582n with external DHCP server [on hold]

    - by Jack
    We have a small home setup with a Technicolor TG582n on Plusnet ISP. We have a Samba4 DC with DNS forwarding enabled. The DC forwards to the Technicolor. However, the client machines have their DNS settings manually set. This is an annoyance when using laptops on other networks. We would like to have DHCP handled on the server machine, such that when a client connects to the Technicolor, it gets its IP and DNS information from the DHCP server, eliminating the need to manually set adapter DNS settings. However, I cannot find an option to disable DHCP on the Technicolor and am not completely clear on how one would point DHCP services to the server from the Technicolor if there were the option. So, how would one make the Technicolor use an external server for DHCP leases?

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  • What is causing a vm to exhibit packet loss?

    - by Joe Philllips
    We have a pretty nice piece of hardware set up to run multiple virtual machines in vmware and one of the vm's is an instance of Windows Server 2003 running SQL Server 2005. For some reason we occasionally see 10-20 seconds of straight packet loss to this machine from remote machines (my workstation) as well as other vm's on the same physical hardware. I am using PingPlotter to keep a close eye on the packet loss. So far we've turned off flow control on the NIC but we are already running out of other things to try. What might be causing this and how can I identify the problem? Note: We also have another server with a very similar configuration with the same type of problem to a lesser extent (because its not used as heavily?)

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  • SCCM for mobile device management returns 404 on /devicemgmt/server.resource

    - by Dan
    We have a new Windows Server 2008 R2 machine onto which we have installed SCCM SP2 followed by the R2 package. We have enabled a mobile device management point and enabled distribution points to support mobile devices as per http://technet.microsoft.com/en-us/library/bb680634.aspx We have also installed the Mobile Device Management Client on to a Windows Mobile 6.1 device. The client on the device fails to connect to the server. Our investigation so far has led us to the URL /devicemgmt/server.resource. However, looking in IIS on the server shows no such URL (in fact nothing apart from the aspnet_client directory) and visiting the URL with a browser returns 404. WebDav is enabled on the Default Web Site in IIS. BITS is installed on the server. Can anyone confirm whether enabling mobile device management will add visible directories to IIS and if so why it might be failing in our case?

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  • Reimage several of the same model PC by copying the hard disk

    - by Tim Lehner
    I have several of the same machine (Dell Precision T3500) that originally came with Windows 7 Pro (there is a Windows 7 Pro OA product key sticker on top of each one). These were initially downgraded to XP by a former IT colleague, but are now back in the pool of unused machines. I am looking to format and install Windows 7 Pro on one of them using the latest official Win7 installer ISO with SP1 and then clone the hard drive to the other machines. The questions then, are: Does this even make sense, or is there a better way to do this considering I'm only doing it to 6 machines? Does this jive with MS licensing (we are the original purchaser of the machines, and thus, presumably, the license holder...but I'm no expert)? Is it possible to apply the individual 25-char product keys to the cloned machines after cloning? How far can I go in the config process (installing corporate standard apps and such) before I have to clone to the other machines considering the licensing/key questions?

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  • JEOS

    - by john.graves(at)oracle.com
    JEOS stands for Just Enough Operating System.  It is  great environment for building virtual machines without all the clutter of a windowing system, games, office products, etc.  It is from Ubuntu and you install it using the Ubuntu server install, but rather than picking a standard install, press F4 and choose “Install a minimal system.” Note: The “Install a minimal virtual machine” is specific to VMWare and I plan to use VirtualBox. Be sure to include Open SSH in the install so that it installs sshd. *** Also, if you plan to install XE, you’ll need to modify the partitions to have a larger swap space (at least 1.5 G). *** Once the install is done, I find it useful to install a few other items. Update Ubuntu apt-get update Install some other tools apt-get openjdk-6-jre Yes, java will be included in any of the WebLogic installs, but I need this one if I want to do remote display (for config wizards, etc). apt-get gcc Some apps require to rebuild the kernel modules, so you’ll need a basic compiler. Install guest additions (Choose the VirtualBox Devices->Install Guest Additions…” option.  This sets up a /dev/cdrom or /dev/cdrom1.  You’ll need to manually mount this temporarily: sudo mount /dev/cdrom /mnt Then run the linux .bin file. Update nofile limits.  Most java apps fail with the standard ubuntu settings: edit /etc/security/limits.conf and add these lines at the end: *     soft nofile 65535 *     hard nofile 65535 root  soft nofile 65535 root  hard nofile 65535 These numbers are very high and I wouldn’t do this on a production system, but for this environment it is fin. To get rid of the annoying piix error on boot, add the following line to the /etc/modprobe.d/blacklist.conf file blacklist i2c_piix4

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  • Dell XPS 710 - Boot Device Not Available

    - by WilliamKF
    Recently I was gifted a Dell XPS 710 tower running WinXP SP3. It was running fine until today when I restarted and received a blue screen and the error "unmountable boot volume". In order to fix this issue I've attempted to boot from the Windows XP CD and run chkdsk. However when I attempt to boot from the CD drive I get a "Boot Device not Available" error. Next I made a bootable USB flash drive, but receive the same error as the CD drive. The BIOS recognizes the CD and flash drives, and they appear in the boot device list, but neither will boot. I've attempted to resolve this by re-arranging the boot order in the BIOS and switching IDE channels/setting jumpers on the drives themselves, to no effect. I cannot move the hard drive to another machine because the XPS is the only one that supports SATA drives.

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  • What would you use to keep track of all the random information about your LAN/Enviroment?

    - by agnul
    Say you work in your average anarchy... no appointed IT guy, no Office-Manager whatsoever, just developers working in free-for-all mode and a couple of non technical people around for admin (non IT) stuff. What would you use to keep track of Hardware / Software inventory Backups of OS images, Drivers, and all that LAN configuration information Passwords for all the systems Currently I'm thinking of having some sort of wiki + web server on our only ''server-class'' machine, but then I fear I'd be the only one who would go through the hassle of adding information in the wiki... So, have you been through that? What would you suggest?

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  • How to test a LDAP connection from a client

    - by FELDAP
    How to check the LDAP connection from a client to server. I'm working on the LDAP authentication and this client desktop needs to authenticate via a LDAP server. I can SSH to the LDAP server using LDAP user but When in desktop login prompt, I can't login. It says Authentication failure. Client machine has Cent OS 6.3 and LDAP server has Cent OS 5.5 LDAP software is Openldap. LDAP servers logs doesn't even show any messages. So, how to test whether the client can successfully connect to LDAP or not.

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  • Executing EXE with wildcard from psexec

    - by Danny
    I'm writing a few scripts that I am using to integrate with bamboo for some continuous integration improvements and I've run into a bit of a snag. I'm currently trying to run a psexec command that installs the latest build on the remote machine but I dont necessary know the revision number. For example, the remote exe file could be Installer-3.1.xxxxx.exe where the xxxxx changes. I tried running the command with Installer-3.1.*.exe but it takes it as literal in Windows. I'm not overly familiar with Windows command prompt and am more used to Linux at this moment.

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  • Mac OS X: pushing all traffic through a VMWare VM

    - by bj99
    I want to set up an Astaro (Sophos) UTM in a Virtual Machine. The Setup should be at the end the following: Cable Modem (one IP adress) | [Ethernet] Sophos UTM (running as VM [VMWare Fusion 5] on the MacMini) | [WIFI] Airport Express v2 (for sharing Local Network to wireless and wired clients) 1)| [WIFI] 2)| [Ethernet over Thunderbolt Ethernet Adapter]* Clients MacMini (Local File Server) *To have the Mini also protected behind the UTM So the setup process for the UTM works fine, but then the problems start: I just have one external IP (from my cable modem provider)== So if I put the VM in briged mode my Internet connection drops, because the MacMini also has its IP adress. If I put the VM to NAT mode the Mini itself is not protected by the UTM So: is there a way to hide the en0 interface(Ethernet) and the en1 interface (Wifi) from the MacMini, so that they not even appear in System Preferences Network section but are available to the VM? That way the Mini must connect to the en2 interface (Thunderbolt adapter) to make any Internet/LAN connection and I just use the given single IP from the Cable Modem. Thaks for any suggestions... Sebastian

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  • Ubuntu 12, chromium/chrome facebook not loading

    - by Grant
    this problem started with chrome, tried chromium to fix it. both have this problem, and after installed firefox no longer works with facebook. I found a threas with two fixes that work and what I need to know is how to make these fixes permanent. one is a cache permissions workaround. launching chromium from terminal with a redirect to a new self created cache in the home folder works. how can i repair the permissions issue with the cache or make a permanent change to the cache chromium uses? two, the ifconfig wlan0 mtu set to 1492, this setting doesnt seem to be perpetual after a reboot. this set of issues is I believe specific to my particular install as there isnt a huge issue from anyone else out there, i'm on a toshiba satellite laptop with a 50/50 HDD partition split with windows. This is likely causing the issue or contributing in some way but I wont run linux full time on this machine until I get these kinks a more permanent fix. Thanks in advance for any advice/answers.

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  • apache requests failing

    - by Josh
    I'm trying to figure out why sometimes the client fails to load objects/requests from a dynamic page served from Apache/MySql/Debian machine. Let's say 13 objects are to be loaded for a total of 185.3 KB load, with no external objects (no DNS lookups) and no other traffic at the same time, randomly some of those object do not load. However, if I perform a refresh, sometimes all of them load or some might fail again. I only have 1Mbps/up and my DNS is been hosted externally (everydns). What could be the reason of this issue? Any comments will be appreciated.

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  • Dovecot, POP3 and Gmail

    - by Eric J.
    I setup Postfix and Dovecot on a new Ubuntu box following these directions. From a client machine, I validate that POP3 seems to be working telnet mydomain.com 110 +OK Dovecot ready. USER [email protected] +OK PASS mypassword +OK Logged in. quit +OK Logging out. However, when trying to configure Gmail on the same client to retrieve email via POP3, I get the error Server denied POP3 access for the given username and password. Server returned error: "Login failed." I carefully confirmed that Gmail is configured to use the same POP Server, Port, Username and Password I used when checking the connection with telnet. What could be causing Gmail to get a "Login failed" message?

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  • No DNS resolving with VPN (RRAS)

    - by Sven
    I have a RRAS server setup on a Windows 2003 machine with two NIC's. The VPN works like a charm, I can ping all the other computers on the network. But it fails when I try to access resources with hostnames. I searches for a solution but the ones I found are about RRAS setup with a remote DHCP server. But in my case it's the RRAS server that hands out the ip addresses (option for redirection for WINS, DNS is ON and set to the LAN NIC). I also heard something about FQDN.. but I don't really understand what that is.

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  • How can I programmatically change the keyboard layout?

    - by Jason R. Coombs
    I want to run a shell command or script that will configure each of my Ubuntu Precise boxes to use the Dvorak keyboard layout as the default (and only) layout. With earlier versions, I was able to set the XKBVARIANT in /etc/default/keyboard but when I make this change in Precise (and reboot), the keyboard layout appears to be unaffected (both in console and in gnome). I tried also setting the XKBMODEL to pc105 and XKBLAYOUT to us, but that did not seem to help. I know I can set the layout for gnome using the 'keyboard layout' tool... but I want the change to affect the console, and I want to automate the process. How can I accomplish this? Edit: To clarify, I want to know how I can cause to change (using only a script or command-line) the keyboard layout to be Dvorak as the default and only keyboard layout for both Gnome and the console. I want this change to be persistent (survive reboots), just as it is when the change is made through the Keyboard Layout tool. Edit: Let me put it another way. If I had installed the operating system myself (which I did not because the OS was installed by the virtual machine infrastructure), I could have selected the desired keyboard layout at install time, and that layout would be applied persistently, system-wide. How can I change the layout to appear as if I had set it during the install process?

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