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• How to do networking between virtual machines in VirtualBox?

  - by Sanoj

  I have two virtual machines in VirtualBox. I would like to do networking between them. For the moment I have the default configuration on both, but they seams to have the same IP-address 10.0.2.15. I would also like to be able to use Internet with both, and that is Possible now. By default the network-setting is NAT, but I seams like they cannot network internally since they have the same IP. But If I change to internal networking I guess that I cannot access Internet with the virtual machines. How can I set up networking between virtual guest AND have access to Internet on them?

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• System Monitoring Redundancy

  - by Josh Brower

  I consult in a small business environment where I have two HyperV hosts (with <10 VMs) + a couple other servers. I recently had an issue where one of the HyperV hosts had a CPU issue and it came down, bringing most of my non-critical VMs with it, plus a free piece of software that I use for network & system monitoring and availability. Because of this, and the fact that iDRAC locked up to, I did not get any alerts about the crash. So I am wondering how I can (cheaply) get a redundant availability monitoring system in place--Is is as simple as running Nagios or Zenoss (or whatever) on two different HyperV hosts? It just seems like running more than one copy of Nagios/Zenoss/etc could be expensive and have high overhead. Thoughts? Thanks! -Josh

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• MBP Bluetooth PAN connection with iPhone 4

  - by Chetan Sachdev

  I am trying to share MBP(OSX 10.8.3) internet connection with iPhone 4 (iOS 6) using Bluetooth PAN(Personal Area Network). Problem is Bluetooth PAN is not getting an ip address. I have tried to renew DHCP lease but nothing works. When I give a Manual IP address, the Bluetooth PAN goes green but doesn't shows the connection in iPhone. Is it possible to share the internet connection via Bluetooth. Note: I don't want to create an Ad-hoc connection over wifi.

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• Proxy Methods for Hosting a Low-Bandwidth Dynamic Website

  - by Casey

  I am building a webcam w/ HTTP server that will be running from a low-bandwith connection. The content on the site will be changing every 5 to 10 minutes. Instead of serving files directly from this connection, are there hosting companies that can act as a public proxy for my site? Therefore, if nobody is using the site, the local internet connection remains idle. And if I receive 1000 hits all at the same time, only one HTTP GET is required, and the hosting company (on a fat pipe) continues serving the other 999 requests? This doesn't sound like a very common usage model, but I feel like this would be the optimal solution to my situation.

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• Macvim lags while Vim on terminal is buttery smooth

  - by SaamJB

  I am running OS X Lion 10.7.3 and Macvim runs significantly slower than vim on the terminal for me. All movement commands in Macvim are much slower. Moving up and down in visual mode is equally as laggy. I see none of this lag when using vim from the terminal. Does anyone know what the reasons may be? I am running NERDtree on every open tab, and I know this contributes some memory overhead and potentially some slow down; but even when I don't run NERDtree Macvim runs much slower than vim from the terminal. Any help in solving this would be greatly appreciated.

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• Mysql Master-ColdMaster

  - by enedebe

  I explain my case: I'm at Amazon AWS and I want to be fault tolerant on a entire region failure. My basic problem is to have the db in sync with 2 regions. My options: Master-Master (high lag) Hand made sync every 5 minutes Master-ColdMaster?! (copy on the fly but Master won't wait the other region commit) In my system we could afford loosing a piece of data (we're not a bank) the last inserts in the db, but we could not afford more than 10 minutes of downtime. The database is small and the level of inserts is low, and I wouldn't affect the normal usage waiting other region commit. Is the 3 solution posible? And the most important, once the primary fail how we can detect and change the rol between master-coldmaster -- coldmaster-master ? Is there any clean-mode to restore between failure? Thank's!

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• How do you record how much memory an app is using on OS X

  - by Ace Legend

  I'm on a Mac Mini with OS X 10.8.2. I am an app developer, but in this case am building an app in C++, so I can not use Xcode for this question. I would like to track how much memory my app is using, but I don't want to manually record it. How do I do this. MORE INFO: I want to record it all day long. I will have the app running all day, so that I can compare peaks in memory. I am not opposed to 3rd party apps, as long as they are reliable. Thanks.

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• Disable spell checking in IE 11 (Win 8.1)

  - by ComFreek

  I have the same Problem as described here: Disable spell checking in Internet Explorer 10 (Windows 8) My system: Windows 8.1 Pro 64-bit What I've already done: Deactivating the spelling options: (There may be minor differences between the following screenshot and the actual 8.1 display. I copied it from here because I own a German Version and I therefore thought that an English one would be simpler to understand.) I turned both options off and tried to restart IE. It's still "correcting" my texts. Searching for 'spelling correction' addons As said in the picture, this entry does not exist on my PC. (The following screenshot is taken from here) Is there any way of disabling it? I prefer an "official" solution if one is available. Otherwise, I also take any registry involving Solutions.

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• Mail.app - What sets sort order when adding To addresses by typing Group name?

  - by Meltemi

  Using Mail.app in Mac OS X (10.6.3) I'm seeing apparently random sort order when sending a email to a group. Not a major issue but you'd think it be alphabetical?!? To reproduce: Compose New Message in Mail.app Type in a group name from your Address Book The addresses from that group will populate the To: field in apparently random fashion FYI- You'd think that choosing Edit Distribution List… in Address Book would let you sort the list...but nope! Anyone know what/how to set this sort order?

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• Port based bandwidth shaping

  - by nixnotwin

  I have an interent connection with the speed of 4000k bits up and down. I want to do port based traffic shaping on a ubuntu machine, which acts as router. eth0 is the WAN interface. This is how I would like to allocate bandwidth: For ports 80 and 445 the bandwidth usage can go upto 90% For ports above 1024 upto 65535 the bandwidth usage can go upto 10% For remaining ports the bandwidth usage can go upto 40% The easiest way for achieving the above is using a router with tomato firmware. I have used it and it is very efficient. I want to try if it can be done on a Ubuntu or any GNU/Linux machine. I have googled extensively about the topic and I feel there isn't much information.

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• Windows: How to make programs think they're not running in a terminal server session?

  - by sinni800

  I am using the program "SoftXPand 2011 Duo" by Miniframe on my Windows 7 PC. It makes two workstations out of one computer. It uses the terminal services built into Windows to create the additional session. I use two screens, two keyboards and two mice to create this "illusion" of two computers. It works quite well and I can even play two different 3D games on the two screens attached to this single machine (using a Radeon HD5770 and a Core i5 2500k with 8 Gbytes RAM). There are a few downsides to this. I just found about one that is hidden on the first look. The sessions you are in (even on the first workstation) will identify as a terminal server session! Now some programs will run with limited effects (graphical), and some won't run at all. This also resulted in some games not running at all. They just say "Cannot be run in a terminal server session" and exit. I have already proven that top modern games (DirectX 10, 11) run just as good as on the same machine without SoftXPand, so this is a pretty artificial limitation! So, can I somehow hack my current session so it doesn't look like a terminal server session anymore? I. E. #include <windows.h> #pragma comment(lib, "user32.lib") BOOL IsRemoteSession(void) { return GetSystemMetrics( SM_REMOTESESSION ); } Will return FALSE? (Not a programming question! Just an example how programs detect if they're in a terminal server session!)

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• Disable "Do you want to change the color scheme to improve performance?" warning

  - by William Lawn Stewart

  Sometimes this dialog box will pop up (see screenshot below). Every time it appears I select "Keep the current color scheme, and don't show this message again". Windows then reminds me again -- either the next day or after reboot, or sometimes another 5 minutes later. Do you want to change the color scheme to improve performance? Windows has detected your computer's performance is slow. This could be because there are not enough resources to run the Windows Aero color scheme. To improve performance, try changing the color scheme to Windows 7 Basic. Any change you make will be in effect until the next time you log on to Windows Change the color scheme to Windows 7 Basic Keep the current color scheme, but ask me again if my computer continues to perform slowly Keep the current color scheme, and don't show this message again Is there some reason why Windows is ignoring/forgetting my attempts to suppress the dialog? I'd love to never ever see it again, it's annoying, and it alt-tabs me out of fullscreen applications. If it matters, I'm running Windows 7 x64 Professional. I believe the dialog appears because I'm forcing Vsync and Triple Buffering for DirectX applications.

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• Does it mean video card is broken?

  - by Sejanus

  Hello, I've just installed some sort of relatively old video card and now computer freezes while playing certain video games (Civilization 4, HOMM V). Some other video games with far better graphics works well (Dawn of War I). Note that "freezing" games runs nicely and smoothly for about 10-15 mins, no lag or any other indication that video card may be not good enough. And then PC suddenly freezes, nothing works but rebooting. The question is, is this a normal behavior of a video card which is simply "not good enough" for the games in question, or is there something broken? Card itself or motherboard or whatever? OS is Windows 7 if that matters, and I don't know exact videocard specs but that probably doesn't matter for this sort of question... thanks in advance!

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• How do I use qmqtool to list emails from a specific envelope sender?

  - by jimp

  Occassionally a user's email password will become compromised and the spammer will flood the Qmail queue with 10,000+ emails sent through a specific user's account. I know how to use qmqtool to remove messages that match a specific string: qmqtool -d -f "[email protected]" However the -f argument matches anywhere in the message. -f 'STRING' display comma separated list of message number(s) containing STRING. That means messages to, from, and even mentioning that email address will all be deleted. Does qmqtool (or another qmail tool) have a command for matching messages from a specific envelope sender? Note: I only want to match the authenticated sender, not the "From:" which is always forged in this case anyway.

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• Windows Vista MAK keys and Volume Licensing..

  - by Physikal

  So when I go into the Volume Licensing Service Center and review our current used/available MAK activations, it says #/50. (the # being the number of our currently used). What I'm curious about, so far we only put vista on like 10 of our boxes. But over time, if we format a machine for some reason, then activate it, I'm assuming it will then in a way consume 2 keys? So what happens when we max the 50? Does that mean we have to fork over some more cash to M$? If so that's pretty lame.

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• Nginx Static Content Server Maxing Out?

  - by Harry

  I use nginx to serve the static content for a decently busy website of mine. I have the logging disabled, and 4 worker processes enabled with 5,000 connections per worker (which should yield a max connection limit of 20,000. The server is only operating at about 10% CPU usage and 50% ram, but it's very laggy, and sometimes nginx is so slow to respond to the requests, it times out. For a small number of connections, it's fine, but once any load starts occurring (~2,500 connections), it backs up and bogs down. Is there any other bottlenecks or limits that I might be hitting? This is a FreeBSD server, and all the static files are located locally (not NFS). The NIC is an unmetered gigabit, and it's only using around 75 megabit. Any insight would be appreciated. Thanks.

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• How to configure 2nd network card for use in VMWare Workstation?

  - by Timo

  Hi all, I am using VMWare Workstation 6.5, connected to my network with a bridged adapter so that the virtual machine OS (Windows XP) has its own IP adress. This just worked out of the box. Now my host machine (Windows Vista) has an additional network card that is directly connected to another computer using a crossover cable (and fixed IP adress 10.1.1.4, while the "main" network connection is using DHCP with IP in the 192.68.0.* range). How can I use that network connection as well in the virtual machine? Do I need to bridge my 2nd network adapter to some VMnetX adapter? Do I need to add a host virtual adapter? I do not know much about networks, and the VMWare network settings really confuse me :-) Thanks, Timo

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• CA ArcServe r11.1 - have to switch Tape Drive Offline then Online to finish backup

  - by Richard

  Ill keep it brief, I have an HP Ultrium 1 in a server currently running CA ArcServe r11.1. I have 5 daily backup tapes, each of which are new. 3 of the 5 work fine without intervention but 2 of them stop at varying points through the backup asking for a new tape, even though that tape is not full. The way I have found around this is to switch the tape drive offline for 10 minutes then switch it back online, whilst the backup is still running. Has anyone ever seen this before? If so, any ideas how to permanently fix this. If all else fails just some pointers in the right direction. Thanks

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• Server load is spiking from 2 to 250

  - by Hakzona

  Hello, I'am using Wordpress 2.9. Webserver 8GB from Hostgator. I'am fighting with this problem for long time but still can not find the solution. Php switched to run as an apache module, Php 5 in DSO, Apache suEXEC, eaccelerator installed, but this configuration started making huge server load on server. Server load spiking from 1 to 250 (4 cpus) and server stops, after period of time its back again and stops in about 10 minutes. It started happening when hostgator support team installed eaccelerator on server. What can make this problem and how can I fix it?

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• Windows Firewall failing after 9-12 hours?

  - by routeNpingme

  I have 2 VM servers in the exact same NIC configuration: Server 2003 R2, one NIC connected to private (hardware firewall) network in a 10.x private address space, and one NIC connected straight to public internet. Windows Firewall is enabled for the Public Internet NIC only. Now, what doesn't make sense - this fails generally after 9-12 hours. It's not exact, but once or twice a day, traffic will just stop on the Internet NIC. No event log entries when it happens, and restarting the Windows Firewall service as well as stopping or restarting IPSec Services (just for fun) has no effect. Once the server is rebooted, everything is fine again for another 1/2 day. Any suggestions?

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• Game Server Colocation

  - by Linuz

  Hello, I am new to colocation. I am looking for a good place to host my server that would have around 5-10 Source Servers (Team Fortress 2). I am looking at maybe around 90 players at a time for now, players coming from all over the United States Could I get more info on what I am suppose to look for exactly? Would it be correct for me to get a 100Mb/s line and does 100Mb/s line in the following example actually be 100Mb/s upload bandwidth? Example: package 4 of FDC's services: http://www.fdcservers.net/server_colocation.php also I want to get something unmettered. I do not want to have to ever worry about going over some bandwidth limit or any DDOS attacks killing me. And if anyone has any other recommendations as to what network configurations I should get or any other good colocation providers that are cheap in price, I would REALLY appreciate the help. Thanks

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• Slow download speeds on MacBook Pro

  - by Austin

  Just as the title says, I am getting very low download speeds on my MacBook Pro. I did a speed test at speedtest.net, and am getting 7 MbPS down, .5 up. However, I can only seem to get 270 KB PS max (averaging 100 K), whether on my school's network or on my home network, wired or wireless. I am on Mac OS X 10.5.8, with Google Chrome. My ethernet settings (under System Preferences - Network - Ethernet Connection - Advanced - Ethernet) are set to "Configure Automatically", "Speed: 100TX", "Duplex: full-duplex, flow-control", and "MTU: Standard (1500)". As far as I can tell, there are no throttles or anything between here and the ISP, so... Any ideas on why I'm getting such low download speeds?

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• How to automatically resume php-fpm?

  - by alfish

  I am using nginx+php-fpm on Debian Squeeze for a busy server and have had great difficulty to deal with maximum connections being reached. Here the problem is that php processes sometimes just die randomly under high load and leave the server with no php process. Then I need to manually restart php5-fpm service to bring back the server to life. I am wondering how to avoid this to happen, or at least treat the symptoms by restarting the php5-fpm automatically whenever there is not php process left to listen to incoming requests. My relevant configs are: pm = dynamic pm.max_children = 1400 pm.start_servers = 10 pm.max_spare_servers = 20 pm.process_idle_timeout = 1s; #not sure it will be useful when pm=dynamic pm.max_requests = 100000 request_terminate_timeout = 30 I appreciate your suggestions to cope with this nasty problem.

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• Credentials work for SSMS but not (ODBC) LogParser script

  - by justSteve

  Via SSMS I'm able to connect and navigate the server/db in question. but trying to connect via a logparser script the same credentials fail. I'm trying to execute this from the same box on which the server's running. the username is owner/dbo of the db. The db has mixed mode authentication. [linebreaks for clarity] C:\TTS\tools\LogParserc:\tts\tools\logparser\logparser file:c:\tts\tools\logparser\errors2SQL.sql?source="C:\inetpub\logs\LogFiles\W3SVC8\u_ex100521.log" -i:IISW3C -o:SQL -createTable:ON -oConnString:"Driver={SQL Server Native Client 10.0};Server=servername\SQLEXPRESS;db=Tter;uid=logger2;pwd=foo" -stats:OFF Task aborted. Error connecting to ODBC Server SQL State: 28000 Native Error: 18456 Error Message: [Microsoft][SQL Server Native Client 10.0][SQL Server]Login failed for user 'logger2'. C:\TTS\tools\LogParser

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• getting Ubuntu-quality fonts / configuration under Cygwin/X

  - by user5402

  I have Cygwin/X installed on a Win7 box. I also have an Ubuntu VM running on the Win7 host. If I do the following: Start Xming on the Win7 box Start mate-terminal under Cygwin/X then mate-terminal starts up with very crappy-looking fonts and a blinking cursor. (I'm using "Monospace 10" in mate-terminal.) If I then do: Use putty to ssh into the Ubuntu VM (fowarding the X connection) Run gnome-settings-daemon on the Ubuntu VM then the fonts in mate-terminal suddenly become much better looking and the cursor stops blinking (probably because I've configured it that way in Ubuntu.) Question: How can I get the better-looking fonts and the ability to set cursor-blinks option for mate-terminal under Cygwin/X without having to run the Ubuntu VM? FWIW, I have Xming-fonts-7-5-0-4 installed. Update: Starting Xming with '-dpi 101' as suggested here helps, but the fonts are still not anti-aliased.

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