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• Nginx issue with two web nodes

  - by HTF

  I'm running Wordpress website with Nginx and Memcached. I have simple DNS round robin balancing with A records pointing to both web servers. I've noticed the following entries in both web servers access logs: 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 192.168.1.10 example.com - [07/Jun/2012:22:43:58 +0100] "-" 400 0 "-" "-" - 0.000 I've configured W3 Total cache plugin for Wordpress - pointing to loopback address (127.0.0.1:11211) on each Wordpress installation. Is this because the webserver is trying to access content that is cached on the other web server? Shall I add IPs to W3 plugin of both web servers on each website (192.168.1.:11211, 192.168.1.2:11211)? I'm not sure if this related to Memcached or maybe some configuration issue on the server itself? Regards

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• Should /tmp owned by root?

  - by cathy02

  Hello, I'm wondering if /tmp should be owned by root, or rather nobody? Now with safe mode there are some conflicts, but I am worried about security if I change it to be owned by nobody... Any advice will be very appreciated.

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• Can't log into Windows XP

  - by lamcro

  Immediately after choosing an account, and starting to log in, it shows the logging out message and goes back to the account selection display. This even happened in safe mode with the administrator's account. So I can't log in. I'll be using a Linux Live CD to extract the laptop's data. Could this be a virus or a hard disk problem? And what should I do?

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• How to install RAID drivers on already installed Windows 7?

  - by happysencha

  64-bit Windows 7 Ultimate 6GB RAM Intel i7 920 Intel X25-M SSD 80GB 2,5" Club 3D Radeon HD5750 GA-EX58-UD4P Motherboard I've been running fine with Windows 7 installed on the SSD. I wanted to create an mirrored Raid-1 setup for backups using two hard disks, so I ordered two Samsung HD203WI. This motherboard supports two different RAID controllers, the Intel's ICH10R and Gigabyte's SATA2 SATA controller. There are 6 SATA ports behind the ICH10R and 2 SATA ports for the Gigabyte controller. I googled around and seemed that the ICH10R is a better choice and since then I've been trying to make it work. When I activate the [RAID] mode from BIOS, the Windows 7 gives BSOD exactly as described by this guy: "Windows 7 will start to boot, it gets to the screen where there are 4 colors coming together and it blue screens and restarts no matter what I do." First thing I did: turned off the RAID and booted to Windows and tried to install the SATA RAID drivers from Gigabyte. I launch the driver installation program and it gives "This computer does not meet the minimum requirements for installing the software" error. I then tried Intel's Rapid Storage Technology drivers (which apparently is the same as the one offered at Gigabyte's site), but it resulted in exactly the same error. I then detached the new Samsung hard disks from the SATA ports, but left the [RAID] enabled in BIOS. To my surprise, it still BSOD'd, so at this point I knew it is an OS/driver issue. Also, I tried with the Gigabyte's RAID enabled (while the ICH10R RAID disabled) and it booted just fine. So then I thought, that maybe I can't install the RAID drivers from within the OS. So I caused the BSOD on purpose once again, and then with ICH10R RAID activated and Samsung hard disks attached, I choose the Windows 7 Recovery mode in the boot menu. It sees some problem(s), tries to repair, does not succeed and does not ask for drivers (which I put on a USB stick) to install. I also tried to use the command-line in the recovery: "rundll32 syssetup, SetupInfObjectInstallAction DefaultInstall 128 iaStor.inf" but it gave "Installation failed." So I'm clueless how should I proceed. Do I really need to re-install Windows 7 and load RAID drivers in the Win7 setup? I don't want to install any OS on the RAID, the Windows 7 is and will be on the SSD. I just want to have a RAID-1 backup using those two hard disks. I mean why would I need to re-install operating system to add RAID setup?

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• How to find full/real email address from Lotus Notes?

  - by DA

  Is there any way to get the full set of email addresses? Example: I receive an email sent to a Lotus group 'all department employees'. I'd like to be able to grab the actual email addresses contained within (not their Lotus user name) so that I could email everyone from a client other than Lotus. Does such an option exist? I believe this was doable in Exchange with a right-click and 'expand nickname' type of action. I'm on a Mac.

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• Applications getting killed automatically

  - by nebi

  I am running httperf client on my m/c and after few seconds it is getting killed. dmesg shows: The command is: httperf --hog --client=0/1 --server=39.0.0.2 --port=80 --uri=/50kb --rate=20000 --send-buffer=4096 --recv-buffer=16384 --num-conns=6000000 --num-calls=1 Although I had done this test no. of times but never faced this error any time. From last two days I am observing this. My Ubuntu version is ubuntu 10.04. and httperf version is httperf-0.9.0 [ 2997.180620] Out of memory: kill process 7977 (apache2) score 70532 or a child [ 2997.180632] Killed process 7977 (apache2) [ 2997.184837] Out of memory: kill process 7971 (rsyslogd) score 8702 or a child [ 2997.184844] Killed process 7971 (rsyslogd) [ 2997.188823] Out of memory: kill process 7978 (apache2) score 1354 or a child [ 2997.188829] Killed process 7978 (apache2) [ 2997.192817] Out of memory: kill process 7973 (atd) score 561 or a child [ 2997.192822] Killed process 7973 (atd) [ 2997.196805] Out of memory: kill process 8102 (httperf) score 471 or a child [ 2997.196811] Killed process 8102 (httperf) Output of free command: total used free shared buffers cached Mem: 3862768 163000 3699768 0 2384 13068 -/+ buffers/cache: 147548 3715220 Swap: 3905528 0 3905528

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• How can I have two web roots on one server, so I can point two domains to two different roots?

  - by Daniel F. Dietzel

  I usually ask my n00b questions on Stack Exchange, but now I'm setting up a VPS and have a question. My usual site.com points to my VPS's IP xxx.xxx.xxx.xxx. Now I have a different domain, and I'd like to point that to another location, say xxx.xxx.xxx.xxx/myname. However, when I try to add that as an "A" record in the DNS settings it won't let me. FYI I'm using chicagovps.net with ubuntu 11.10 and Nginx. Thanks!

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• Java Applet Console

  - by Jivings

  Can anyone tell me how to access the Java Applet Console in Chromium for Linux? I assumed there would be a Java application packaged with the JRE that would give me access through the command line, but I can't find reference to anything. $ java -version java version "1.6.0_24" OpenJDK Runtime Environment (IcedTea6 1.11.2) (ArchLinux-6.b24_1.11.2-1-i686) OpenJDK Client VM (build 20.0-b12, mixed mode)

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• How do I switch to shell access if I've already got database access?

  - by apache

  mysql -u user -p pass -h remotehost Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 96 Server version: 5.1.36-community-log MySQL Community Server (GPL) Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> Suppose the remotehost's OS is linux, how do I switch to shell mode?

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• A few question about some advanced Autohotkey uses

  - by user47625

  Hello, I'm using this wonderfull piece of software for some time now, but just for few quite basic things. So I'm wondering if these things would be possible: to use different set of shortcuts for different applications - so one shortcut performs different actions in different places. to make some form of modes for application, where you could use some swtch (vim style) and this would change things the shortucat would do if it would be possible to place some caption that indicates which mode you are using - little improvement of previous item I tkank everyone for answer.

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• Domain Password change causes Outlook saved POP passwords to fail

  - by Mike

  I have a user that repeatedly has this issue. A 3 month password change is enforced on the domain, but when the user changes his, Office 2003 will re-ask for the POP account password, even though it has not changed. Entering the correct POP account password causes it to repeatedly fail. If you go and change the POP password and enter the new one, then it is fine. He's the only one with this issue, but also the only user with both an Exchange and POP account. Any ideas guys? Thanks in advance :)

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• How can I get OS/X-like switch windows of same program bound to hotkey with linux GUIs?

  - by dbenhur

  On OS/X, Command-~ switches between windows associated with the program with current focus. This is very handy when toggling through a set of browser windows or editor windows, for example. A couple years ago I noticed someone using similar functionality on a Gnome linux laptop and they showed me how to set it up, but I forgot the details (so I know it's possible). I frequently switch between MacBook and a variety of linux systems running Gnome, Unity, and occasionally KDE. My Google-fu failed so I turn to stack exchange: How do I bind Alt-~ or similar key to give me functionality to switch between windows of program with current focus?

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• A Duplicate name exists on the network

  - by Adam

  Recently we changed out office IT structure from having a dedicated server to be the DC, a dedicated server for the exchange etc... (Each running Windows Server 2003 R2) Now we have a single server running Windows SBS 2008 and created a new domain (with a different domain name) We then changed every PC so it connected to the new domain and renamed every PC with a new naming structure. After I had done this, we were getting several PCs that would get the following message just before the login screen (Alt+Ctrl+Del Screen) A Duplicate name exists on the network I have checked the ADUC and have removed the trouble PCs from the list and renamed each PC and changed the SID before connecting back onto the domain but still getting this message. I have tried everything that i can think of but still getting the problem. Any help would be greatly appreticated.

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• Moving a window that can't be dragged by the title bar?

  - by ccat

  I have Fallout Collection and I am trying to run it windowed because of the low resolution. When I change the mode to windowed via the .ini file, however, it starts the game with the window shoved into the upper left corner of my screen. Clicking the title bar of the window just clicks back into the game program. So how can I move it to the center of my screen? I am using Windows 7 professional 64-bit.

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• What is the best SSD deal available right now ?

  - by paulgreg

  What is the best 2.5" SSD deal (best performance for a reasonable price and a good size) available right now ? The question is in 'community wiki' mode, so feel free to post the "winner" below : And the winner is... : currently the OCZ Vertex. Prices: * 30GB - $149.99 * 60GB - $239.99 * 120GB - $389.00 * 250GB - $829.00 Speed: * Read: up to 270MBps * Write: up to 210MBps

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• Is it possible with Google searches to ban any and all results from a domain? [closed]

  - by Stu Thompson

  Is it possible to configure Google somehow to permanently ban search results from domains that I know 100% are never, ever going to make me happy? Something cookie/session based maybe? E.g. I want to ban (permanently, forever and always) results from experts-exchange.com. Every time I click results that take me to their page I just want to scream. Update! Google has released a Chrome Extension to allow users to block individual site from Google search results! Personal Blocklist (by Google). (Since this question has been closed, I cannot answer it.)

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• High Availability Clustering and Virtualization

  - by tmcallaghan

  I'm trying to understand how the various virtualization vendors (specifically Amazon EC2, but also VMware and Xen) enable software vendors to provide a real HA solution in the environment where the servers are virtualized. Specifically, if I'm running any HA application (exchange, databases, etc) I need to ensure that my redundant virtual "servers" aren't located on the same physical server. Using in-house virtualization solutions (VMware, Xen, etc) I can provision accordingly as well as check the virtual - physical arrangement. I could, however, accidentally "vmotion" to the same physical hardware. With EC2, I don't even have the ability at provision time to select different physical servers. Since their Cluster Compute Instances are 1 virtual server per physical server it seems to be the only way to guarantee I don't have a false sense of redundancy. Any ideas or thoughts would be helpful. What are others doing about this problem? If the vendors provided an API where I could get something as simple as a unique physical system identifier I could at least know if I'm going to have an issue. -Tim

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• "The network path was not found" - shortening the delay before Windows tries again

  - by Harry Johnston

  If I try to connect (over Windows file sharing) to a machine that has gone to sleep, I get a timeout followed by "The network path was not found". If I then wake the machine and try again, I still get "The network path was not found" because the connection failure has been cached. If I wait a while (about 30 seconds?) and then try again I can connect successfully. I understand this behaviour. My question is: is there any way to shorten the delay before I can try the connection again?

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• Windows 7 boots with a blank screen with mouse cursor only.

  - by user2352

  My Windows 7 machine was powered down without logging out first. Now when booting the PC, Windows 7 does not completely start--instead it boots to an all-black screen with a mouse cursor that can be moved around. There are no icons, toolbars, etc. Ctrl+Alt+Del does not bring up the Task Manager. Booting to Safe Mode renders the same result.

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• Moving to Data Center

  - by Won

  Please, give me any advice. Our company has decided to move servers to a data center since we are having a major network traffic jam. The data center provides 100MB bandwidth and full 42 unit cabinet for us. Right now, I am planing to have two firewalls for a failover and changing DNS informations for a web server. Is there anything that I have aware of before I move them to the data center? 1. Web Server 2. Exchange Server 3. SQL Servers

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• Central Storage for windows user accounts homedirs .. hardware/software needed?

  - by mtkoan

  We have ~120+ users in our network, and are endeavoring to centralize logon authentication and home directory storage server-side. Most of the users are Windows 2000/XP machines, and a few running Mac OS X. Ideally the solution will be open-source-- can this all be managed from a Linux server running LDAP and Samba? Or would a hacked-NAS Box with a FreeNAS or similar suffice? Or is Micro$oft's Active Directory really the preference here. Is it viable to store PST files on this server for users to read from and write to? They are very large ~1.5gb. We have no mail server (or money) capable of Exchange or IMAP, only an old POP3. What kind of hardware horsepower and network architecture should we have for this kind of thing?

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• Apache with mod_php high memory utilization

  - by Raj

  We have Magento application deployed on Apache with mod_php and mysql. I have observed that sometime apache server starts consuming high memory which causes memory swapping and results in high load on servers. whenever there is high load on apache server, the apache processes which are causing the high load were in sleep mode at mysql end and CLOSE_WAIT state at client side. Any help is appreciated to resolve this issue.

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• Mirrored servers in data centers nationwide -- how?

  - by Sysadmin Evstar

  I flubbed my IT interview with Google by getting this question wrong. I thought that in the various metropolitan areas, an "http://google.com" request went to a local DNS server in a geographically nearby datacenter, which then returned an IP address for just one of several nearby http servers, which then rollover'd to the next local server, and I could not explain how or where the nationwide DNS kept its table of the available local servers cached, or how such a rollover happened. Or how they could manually take some server out of rotation, from anywhere. Fail. So, which Wikipedia page should I be looking at now so I can ace this question next time? And, what daemons run on these machines 24/7 to keep the mirrored database disks synchronized?

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• Mirrored servers in data centers nationwide -- how?

  - by Sysadmin Evstar

  Mirrored servers in data centers nationwide -- how? I flunked my IT interview by getting this question wrong. I thought that in the various metropolitan areas, an "http://google.com" request goes to the ISP's DNS server, which somehow returns an IP address for one of several geographically-nearby http servers, and then something internally rolls over to the next available local Google server. But then, I could not explain where the table of available local Google servers is actually cached, or the details of the IP address rollover. Or how they could manually take some server out of the rotation, from anywhere. So, what should I be reading now so I can ace this question next time? Also, what daemons run on these machines 24/7 to keep all those mirrored database disks synchronized?

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• A few questions about advanced Autohotkey uses

  - by user47625

  Hello, I have been using this wonderful piece of software for some time now, but for just a few basic things. So I'm wondering if the following would be possible: to use different set of shortcuts for different applications - so one shortcut performs different actions in different places. to make some form of modes for application, where you could use some switch (vim style) and this would change things the shortcat would do if it would be possible to place some caption that indicates which mode you are using - little improvement of previous item I thank everyone for their answers.

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