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  • mongodb replication: no primary elected

    - by Max
    I have three servers with mongod installed on it running as a replication set. Suddenly the two secondories became unavailable (the mongod process died) - I think because they were too stale. The problem is that the original PRIMARY is now the SECONDARY and my application doesn't work because it can't connect to a PRIMARY. I mean, in which way does that help me? If the replica set can't do failover?! Am I missing something? Furhtermore I am asking myself why did the SECONDARIES die / why are they too stale? What can I do about it? FYI: My database is quite big (40GB on disk).

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  • Triple head DVI KVM

    - by cat pants
    I am trying to run a Linux desktop and Windows desktop simultaneously with a KVM for maximum productivity. Also running three monitors. I need a KVM that can do 3x DVI @ 1920x1080 + 2x usb (mouse and keyboard) + toslink for two machines. What would you suggest? I ask on here because I have searched quite a bit and have yet to find a KVM with these requirements. (I would be open to something like modifying 3x regular KVMs to control them with one button or similar) Thanks! (I tried posting this question earlier, but it was closed as being "not related to computer hardware or software" ... is a KVM not related to computer hardware or software? I'm pretty sure it is. kvm-switch has been tagged 100 times on here for example.)

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  • Router for Infrastructure Network

    - by amfortas
    We have an HPC operation that down the years has grown to several racks of gear at three sites, hooked up via Gigabit fiber and Catalyst 2960s (we control the links and switches). Thus far all machines have been on a flat RCF1918 10/8 but we are looking to segment the network in order to streamline matters for iSCSI and generally keep infrastructure equipment away from our end-users. We have now reached a point where we need to consider introducing VLANs for specific subnets and are wondering if it would be worthwhile in the longer run to acquire a small router to keep to keep track of all this stuff and cut down on the complexity of netmasks and routes on host machines, etc. Has anyone here had a similar experience? Suggestions as to suitable equipment would be welcome.

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  • xenserver: xe command never returns?

    - by ethrbunny
    I'm trying to port a xen server 6.2 pool to a new IP address range. I've got three servers total: 2 currently at their new IP but no longer in the pool and one remaining. I'm trying to set IP address information on the two disconnected ones using the xe command and all of its variants. Oddly enough, it never returns with any values. xe host-list It just sits there until I ctrl-c it. The server is still awake and responding though. I can enter other commands (EG ifconfig) and they work fine. If I enter this same command on the remaining server in the pool it works ok. I've tried restarting the toolstack and even rebooting. No change. What am I doing wrong?

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  • Certain websites do not open. Instead a 1*1 image gets displayed

    - by Ranjith - SR2GF
    When I try to visit certain websites like www.bidvertiser.com, www.buysellads.com, a white page shows up, the title bar displays the site name followed by (1x1) in brackets. When I right click, 'View Source' option appears disabled. The Save As.. option shows the file type to be gif. However, when I preview the site in Google search results ( by moving the mouse over ) the screenshot of the site displays well. This happens on all the three browsers on my computer: Chrome, Firefox and IE. What is the problem and how can it be resolved? EDIT: At some point of time, they probably worked on my computer! I think it is a more general problem. The same happens when I click on certain links in Google search results.

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  • Windows 7 system CPU bogged by windows services, no explanation

    - by Alex
    I'm looking at a laptop for a colleague which is running terribly slow. A quick look showed that the CPU was 100% used by 2-3 SVCHost processes, which off course doesn't tell much since those are just 'cover' processes with services running underneath them. So I fired up process explorer in hopes of finding a shady rogue service which was bogging the system, but to my suprise I found genuine MS Windows processes (or at least damn-good disguised ones) are bogging down the system: dnscache (DNS Client) IKEEXT (IKE and AuthIP IPSec Keyring modules) iphlpsvc (IP Helper) Seen separately, these processes might seem odd to be using a lot of CPU, but taking a step back one can conclude that all three services are quite closely related to networking. I've tried running: netsh int ip reset log.txt which has helped me save bizarre network-related problems in the past, but this didn't help Off course I though about a virus, but both MS Security Essentials as well as malwarebytes (let both run a full scan).

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  • What data should I (can I) gather to prove a .net bug in third party software?

    - by gef05
    Our users are using a third-party system and every so often - a user might go all day without this happening, other days they may see it two or three times in seven hours - a red x will appear on screen rather than a button, field, or control. This is a .net system. Looking online I can see that this is a .net error. Problem is, our devs didn't write it, and the vendor wants proof that the problem resides with their system, not our PCs. What can we do to gather information on such an issue that would allow us to make our case to the vendor and get them to create a fix? I'm thinking of data to gather - anything from OS, memory. .net version installed etc. But I'd also like to know about error logging - if it's possible to log errors that occur in third-party systems.

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  • Cannot open some websites

    - by Jayashree
    Hi all, I have a very specific problem. We have a wifi router at home which supports three laptops and a desktop. For the past month or so, I've been unable to open a number of websites on our HP desktop, Dell laptop and my Macbook. These include everything connected with http://wordpress.org and several others. The page simply refuses to load. I can't access some other websites as well. I've tried everything. We've rebooted the router, deleted all the cookies/download history, but nothing works. I've tried accessing these websites on IE, Chrome, Firefox and Safari. Strangely, when friends use their laptops on the same wifi connection, the websites open just fine. What do I do? I'm getting desperate here. Jayashree

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  • Why do I have inconsistent network issues with my laptop's wireless?

    - by Jason
    I'm having trouble with my laptop Internet connection. It's patchy at best and resets or freezes a lot. The signal strength is also random. I thought it might be a driver issue but now I don't know. Three other computers using the same wireless network run well. I've switched out wireless routers so I don't think it's the router. I thought it might be the laptop's internal wireless card but I just bought an external USB network card and I'm still having problems. Specs Lenovo T-60p Windows 7 Ultimate Edition Patches/drivers are up to date I only use one of the below at a time, disabling the other: Intel PRO/Wireless 3945ABG v. 13.3.0.137 (Internal wireless) Medialink Wireless-N USB 2.0 Adapter (USB wireless) Any ideas on what might be the problem?

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  • USB 3.0 hub; what can it power?

    - by pouzzler
    I own an Asus UX31A laptop, equipped with 2 USB 3.0 ports. I would like to connect several USB devices to one of these ports, using a USB 3.0 hub. 1) Am I correct in assuming the Asus "USB Charger+" commercial blurb corresponds to the USB 3.0 standard "Battery Charging Specification 1.2", and furthermore inferring that the laptop can deliver 1.5A through a USB port? 2) Does a powered external USB 3.0 hard drive draw on the USB power lines? 3) I would like to connect the aforementionned drive, an android phone, and a 200mA rated optical mouse to an unpowered USB 3.0 hub, itself plugged into the laptop. Should my above assumptions be false, would this setup be able to power all three devices? Thanks to the usb guru who'll settle my fears to rest. Best regards, Sébastien

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  • FFMPEG Splitting MP4 with Same Quality

    - by Pragmatic
    I have one large MP4 file. I am attempting to split it into smaller files. ffmpeg -i largefile.mp4 -sameq -ss 00:00:00 -t 00:50:00 smallfile.mp4 I thought using -sameq would keep the same quality settings. However, I must not understand what that does. I'm looking to keep the same quality (audio/video) and compression with the split files. However, this setting makes the split files much larger. What flag(s) do I need to set to keep the same quality and attributes in the split files while maintaining the same quality to size ratio? For instance if my original file is about 12 GB and is 1920x1080 with a bitrate of 10617kbps and a framerate of 23 frames/sec and 6 channel audio with 317kbps, I would like the split files to be the same only a third of this size (if i split it into three pieces).

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  • Need data on disk drive management by OS: getting base I/O unit size, “sync” option, Direct Memory A

    - by Richard T
    Hello All, I want to ensure I have done all I can to configure a system's disks for serious database use. The three areas I know of (any others?) to be concerned about are: I/O size: the database engine and disk's native size should either match, or the database's native I/O size should be a multiple of the disk's native I/O size. Disks that are capable of Direct Memory Access (eg. IDE) should be configured for it. When a disk says it has written data persistently, it must be so! No keeping it in cache and lying about it. I have been looking for information on how to ensure these are so for CENTOS and Ubuntu, but can't seem to find anything at all! I want to be able to check these things and change them if needed. Any and all input appreciated.

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  • Configure clients to navigate through specific wan. Pfsense

    - by leandronn
    I have a machine with a pfsense running. It is configured with three ethernet cards. LAN 192.168.2.1/21 WAN1 200.41.X.2/24 WAN2 200.41.X.3/24 ISP Gateway 200.41.X.1 This is a connection with 5 different IP addresses. WAN1 and WAN2 are directly connected to my ISP router. I need a way to configure some clients navigating through WAN1 and some through WAN2. I am new to pfsense so, please, if you can send me some examples to do this. I can add two squids if it is necessary. Thanks a lot.

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  • Enterprise Data Center System Admin/Engineer to Server Ratio

    - by Bob
    I know there have been similar questions asked over the last few months however looking at a Data Center Operations and know there are some really smart people out there that might be able to help. Looking for some staffing best practices based on first hand experience and was hoping that there is some experience in this area that can provide "best practice" application: Three High Availability (99.99% plus) Enterprise Level Data Centers geographically dislocated, one manned 24x7x365, one lights out, one co-location running HOT-HOT-HOT supporting a global community. More than 2,000 operating systems consisting of 95% Windows, 5% Linux and Solaris, 45% virtualized, more than 100TB storage. No desktop support, no Network Administration (administrated separately), running N+1 and serving more than 250 Billion page views annually. Based on experience what has been your experience with Server to "Data Center System Administrator/Engineer" ratio? Thanks in advance for your responses.

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  • How I can make my windows look like mac using any software or utilities?

    - by user33631
    I am currently using Windows classic mode in Win server 2008 r2. Can I get mac like themes in windows. Like When I run Photoshop, SongBird or other apps they have interface quite similar with Mac. Does someone know how it's possible to get a mac like look in windows (compatible to win 7). My simply means that something that make my windows's themes color like mac. Like I can run firefox by using themes but i want now for every apps means the three button on top titlebar and interface.

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  • How can I create matrices of data in Excel?

    - by sandeep
    I want to create a 4*4 matrix in excel 2007 by taking three or more columns or conditions for example Column index Row index Name 1 2 x 2 3 y 3 4 z 4 1 p this is how data looks and i want it for 1*1 cell as p and 1*2 cell as x and so on. and I want out put as follows matrix 1 2 3 4 1 p x y z 2 p x y z 3 p x y z 4 p x y z and I have very huge data like this some times the matrix size goes up to 60*60 also.

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  • Linux, PHP, and mysqlnd?

    - by bob-the-destroyer
    Looks like most common distros build their PHP packages without mysqlnd, instead relying on the old libmysql library. Are there any distros that do include the new mysql native driver even as an option in any of their officially supported repositories? If not, is it possible (and if so, how) to rebuild these three (mysql, mysqli, & pdo_mysql) extensions without having to rebuild the entire PHP install? In my case, there are several PHP functions I need that are available only if these Mysql extenstions are built against mysqlnd. So I'd be fine installing a new OS to get these if the OS offers and supports it.

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  • How Can I Automate the Backup of a Quickbooks Server?

    - by Nick
    I have three computers: The first is the company file server which has the Quick Books company file, is always on, and lives in the closet. The other two are Quick Books Clients. All are XP Pro. I need a way to automatically backup the QB data file, without any user intervention. Quick Books has a built in scheduled backup utility, but from what I've read, it only works when the software is running in single user mode. (and obviously putting the server into single user mode defeats the concept of having a server). Also, I'm not actually running QB itself on the server, just the "QB Database Server" process that sits in the system tray. Surely there must be a way to automate this? I'm open to any ideas/suggestions. Thanks!

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  • Configure users and groups for Git

    - by Peter Penzov
    I want to create Git server on which every developer can commit code with his own linux account. The Git repository is initialized under the directory /opt/git_repo.git I created a group developers which owns the directory git_repo.git. Then I created three users which are part of the same group - DeA, DevB, DevC. I created a soft link into each developer home directory which points to the /opt/git_repo.git location. The problem is that when a user connects to the Git server and use the soft link to access the files he cannot do it. Can you help me what are the proper steps and commands to configure the repository?

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  • Which rdisk value in boot.ini maps to which disk?

    - by MA1
    Following are the contents of a sample boot.ini: [boot loader] timeout=30 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /NOEXECUTE=OPTIN /FASTDETECT multi(0)disk(0)rdisk(0)partition(2)\WINNT="Windows 2000 Professional" /fastdetect multi(0)disk(0)rdisk(1)partition(1)\WINDOWS="Microsoft Windows XP Home Edition" /NOEXECUTE=OPTIN /FASTDETECT The rdisk value tells the physical disk number. So, if I have three hard disks say: /dev/sda /dev/sdb /dev/sdc Then how to know which disk (/dev/sda or /dev/sdb or /dev/sdc) is rdisk(0) and which disk is rdisk(1), etc.?

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  • Windows/global setting to allow only SSL when on public Wifi?

    - by hungry
    Rather than going through each of my apps and modifying settings, or tweaking individual browser settings (I use three different browsers) or just being careful not to type non-SSL URLs into the web address bar, is there a solution at the Windows level that will prevent anything from connecting to the web from my laptop unless it's using SSL? I also have mini apps installed like Gmail checker, etc that connect to the web of their own volition using my usernames, passwords and such, so it goes beyond just web browsers. The reason I'm asking is I want to work securely on the general Internet when on public Wifi (e.g. coffee shops) without a lot of hassle or having to remember everything that needs to be locked down. When I'm back home I want to go back to full access mode using any kind of protocol on the web. If a website doesn't support SSL when I'm out in public then I just don't surf it - that's not a worry to me.

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  • Firefox on Windows 7 became an "always top" window

    - by Firebear
    I am using Mozilla Firefox 7.0.1 on a Windows 7 computer (home basic). I usually keep the browser window opened for a long periods of time, like three to four weeks, and I have many tabs opened in the window, like 300 to 900. Recently all of the sudden the Firefox window became "always top" window. I can minimize it, but when it is maximized, no other window can be displayed in front of it, only behind it. This is very inconvenient for me. Is there any fix that I can apply without restarting the Firefox window? Thank you.

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  • Best practices for FQDN for standalone domain (is a two part domain.tld okay?)

    - by birchbark
    I've searched quite a bit and can't seem to find a straight, modern answer on this. If I am hosting a domain, say, mydomain.com, on a machine which is going to solely be used for that domain, and there are no subdomains, is there a real, practical reason besides compliance to create an arbitrary hostname (i.e. myhost) just in order to have a three-part FQDN (myhost.mydomain.com) to satisfy some sort of RFC or convention that's expected. This seems to make a lot of undue complexities from my perspective, and I'm not sure if there's an advantage to this or if it's just a hold-over from a time where all web resources came from a subdomains such as www and ftp which may need to scale to separate machines. I don't use www on my domain, either, which is ill-advised for all I know from an administrators perspective (though removing it is the norm from a designer's perspective)...

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  • How should a small team using multiple OS's deploy over github?

    - by Toby
    We have a small development team that have recently moved to using github to host our projects. The team consists of three developers, 2 on Windows and 1 on Mac. I am currently researching the best way to deploy applications to our Linux servers (dev and production). Capistrano running locally would be ideal but from what I read this won't work for Windows machines. It looks like the best way is to use a post-receive hook in github, I can see how this would work for auto deploying to dev, but I don't see how we could then deploy to live. I have found paid projects like http://www.deployhq.com/ but it feels like something that a quick bit of code should be able to do for free, I just can't seem to get myself pointed in the right direction! I was wondering what would be considered best practice for small team deployment involving multiple local OS's and github.

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  • nginx serves broken characters

    - by Andrew123321
    I have nginx 1.2.0-1 on debian 6.0.5. I have an empty file (let's say test.css). I add A and newline, works fine, B and newline, works fine,... D, works fine. I add E and I got three broken characters ("???"). When the file has got more content nginx would usually "cache" it and then output the cached file minus some characters plus some of these broken characters. Do you have any idea how to deal with this? Thank you

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