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  • Determine / set Puppet environment

    - by quickshiftin
    I'm trying to determine what Puppet thinks the environment is on my agent nodes. Per the documentation I've configured the agent's environment in /etc/puppet/puppet.conf as such [agent] environment = development In order to view the environment I've found this code to add an environment fact to facter: require 'puppet' Facter.add("environment") do setcode do Puppet[:environment] end end However, on one of my agent nodes, if I run sudo facter -p environment, the result is production. I've tried to manually set the environment temporarily via sudo puppet agent --environment development, however the result from facter is the same. Any idea what's going on?

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  • Building a linux system

    - by webyankee
    I am worried about hardware compatibility. I have several older PCs with various hardware and wish to install Linux onto them. I have several ideas about what I would like to do. first, I am a novice and know just enough to get me into trouble in a lot of areas. I can not find adequate descriptions of the usage between a desktop and a server version of Linux. When would you want to choose to build a server instead of a desktop and can you change a desktop to a server if you need higher functionality? I wonder if I should use 32 or 64 bit? I believe 32 bit on older (P1 or P2 systems) would be the safe way to go. what is the extent can these systems be used? Can they used to play high end graphics on-line games or just simple browsing and word processing? How do I determine what programs the system can use? I have pondered on the idea of linking several systems together to make one big computer. I know this can be done with some functionality improvement. Any Ideas about this?

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  • Check availability of my websites

    - by DeChinees
    Hi, How can I check the availability of websites from hosted by company? Ping the server and checking if the services for IIS or Apache/Tomcat is not enough. I want to see if the sites are responsive, if I can login. My idea is to build a script using cURL to access the websites and parse for certain words. However using cURL to access a secure site (HTTPS://www.fleetagent.be) doesnt seem to work. cURL might not be the best tool! Any ideas how to check the availability of this website? Thanks in advance, Darrell

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  • What are the best tools for modeling a pre-existing SQL database structure?

    - by Ejoso
    I have a MS SQL database that has been running strong for 10+ years. I'd like to diagram the database structure, without spending hours laying it all out in Visio or something similar... I've seen nice models diagrammed before, but I have no idea how they were created. From what I've seen - those models were created in advance of the database itself to assist in clarifying the relationships... but my database already exists! Anyone have any suggestions for tools that would work, or methods I could employ to tease out a nice clean document describing my database structure? Thanks in advance!

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  • Mailer Daemon greeting failed

    - by Xelluloid
    I wrote a tool that sends automated mails to a couple of addresses. This worked for a couple of weeks. Now since yesterday I get Mailer-Daemon responses like this Hi. This is the qmail-send program at test.test2.net. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out. testuser@domain.com: Connected to 123.456.789.10 but greeting failed. Remote host said: 554 foo.bar.com I'm not going to try again; this message has been in the queue too long. Does someone have an idea what I can do now?

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  • Discovering Your Project

    - by Tim Murphy
    The discovery phase of any project is both exciting and critical to the project’s success.  There are several key points that you need to keep in mind as you navigate this process. The first thing you need to understand is who the players in the project are and what their motivations are for the project.  Leaving out a key stakeholder in the resulting product is one of the easiest ways to doom your project to fail.  The better the quality of the input you have at this early phase the better chance you will have of creating a well accepted deliverable. The next task you should tackle is to gather the goals for the project.  Specifically, what does the company expect to get for the money they are about to layout.  This seems like a common sense task, but you would be surprised how many teams to straight to building the system.  Even if you are following an agile methodology I believe that this is critical. Inventorying the resources that already exists gives you an idea what you are going to have to build and what you can leverage at lower risk.  This list should include documentation, servers, code repositories, databases, languages, security systems and supporting teams.  All of these are “resources” that can effect the cost and delivery schedule of your project. Finally, you need to verify what you have found and documented with the stakeholders and subject matter experts.  Documentation that has not been reviewed is actually a list of assumptions and we all know that assumptions are the mother of all screw ups. If you give the discovery phase of your project the attention that it deserves your project has a much better chance of success. I would love to hear what other people find important for this phase.  Please leave comments on this post so we can share the knowledge. del.icio.us Tags: Project discovery,documentation,business analysis,architecture

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  • Handling Types for Real and Complex Matrices in a BLAS Wrapper

    - by mga
    I come from a C background and I'm now learning OOP with C++. As an exercise (so please don't just say "this already exists"), I want to implement a wrapper for BLAS that will let the user write matrix algebra in an intuitive way (e.g. similar to MATLAB) e.g.: A = B*C*D.Inverse() + E.Transpose(); My problem is how to go about dealing with real (R) and complex (C) matrices, because of C++'s "curse" of letting you do the same thing in N different ways. I do have a clear idea of what it should look like to the user: s/he should be able to define the two separately, but operations would return a type depending on the types of the operands (R*R = R, C*C = C, R*C = C*R = C). Additionally R can be cast into C and vice versa (just by setting the imaginary parts to 0). I have considered the following options: As a real number is a special case of a complex number, inherit CMatrix from RMatrix. I quickly dismissed this as the two would have to return different types for the same getter function. Inherit RMatrix and CMatrix from Matrix. However, I can't really think of any common code that would go into Matrix (because of the different return types). Templates. Declare Matrix<T> and declare the getter function as T Get(int i, int j), and operator functions as Matrix *(Matrix RHS). Then specialize Matrix<double> and Matrix<complex>, and overload the functions. Then I couldn't really see what I would gain with templates, so why not just define RMatrix and CMatrix separately from each other, and then overload functions as necessary? Although this last option makes sense to me, there's an annoying voice inside my head saying this is not elegant, because the two are clearly related. Perhaps I'm missing an appropriate design pattern? So I guess what I'm looking for is either absolution for doing this, or advice on how to do better.

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  • How do I install 10.04 on a Vortex86DX embdedded system?

    - by mathematician1975
    I am trying to install Ubuntu on a Netcom NC-499 board that contains a Vortex86DX processor. The processor vendor claims support for Ubuntu 10.04 but I am having problems installing it. I am trying to install to a 8GB compact flash card attached to the board with an IDE connector, using a USB connection CD-Rom drive and a burned ISO image obtained from this link http://old-releases.ubuntu.com/releases/10.04.0/ubuntu-10.04.3-desktop-i386.iso . Installation proceeds up to the point of around 78% but during the stage where the installer informs me that it is "configuring apt", the installer terminates with a popup dialog containing the following "The installer encountered an unrecoverable error. A desktop session will now be run so that you may investigate the problem or try installing again." I have no idea what to do at this point. I am a Linux novice and I do not really know how to investigate the problems with the installation. I have configured the BIOS exactly according to how the vendor specifies and they assure me that this version is fully compatible with their hardware and yet I am unable to get a decent install. I am able to install Ubuntu 8.04 using exactly the same procedure successfully so I am sure there is no problem with my CD-Rom compatibility or the compact flash drive. Any help will be gratefully received.

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  • Deleting Unused Swaps Partions

    - by Nikita Kononov
    Good evening everyone , I got a little issue with Swap Partitions. Due to some issues after installing Ubuntu first time, I reinstalled it and now I have 3 Swaps. Here is sudo fdisk -l result Disk /dev/sda: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0xaa9693fe Device Boot Start End Blocks Id System /dev/sda1 2048 52430847 26214400 1c Hidden W95 FAT32 (LBA) /dev/sda2 * 52430848 540677076 244123114+ 7 HPFS/NTFS/exFAT /dev/sda3 540678142 1465147391 462234625 5 Extended Partition 3 does not start on physical sector boundary. /dev/sda5 1452750848 1465147391 6198272 82 Linux swap / Solaris /dev/sda6 1440352256 1452742655 6195200 82 Linux swap / Solaris /dev/sda7 540678144 1427951615 443636736 83 Linux /dev/sda8 1427953664 1440339967 6193152 82 Linux swap / Solaris So Swaps in /dev/sda5 and /dev/sda6 are no longer in use as far as I understand and thus I was planning to delete them, however faced a problem. What I did is download and burn Gparted Live CD and boot it up, tried to delete those partitions but I have no idea how to add 12GB unallocated memory to the existing OS partition in this case to /dev/sda7 Is there anyway I can delete 2 swaps and extend unallocated memory to /dev/sda7 partion? Thank you in advance!

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  • Chromebook C720 - issue suspending and booting

    - by user72727
    I recently bought an Acer C720 chromebook (Celeron, 2GB RAM, 16GB SSD) with the intention of loading Linux and using it as a cheap development laptop while on my holiday. The installation sort of went ok but initially the trackpad didn't work so I ran a script that mostly fixed that. My current issues are: Booting: it still goes to the chrome "unknown os" white screen - I have to press ctrl L - then escape then 1 then wait for 30 secs while it seems to be searching for something. Then Ubunto loads up fine. Any idea how to fix this? Suspend: if I close the lid of the laptop then it doesn't seem to suspend properly. At least when I open the lid the screen appears to be on but the screen is blank with a cursor. Nothing responds on the keyboard and I have to hold the power down to restart it. The suspend from the top menu has the same issue. Moving windows: I don't have a mouse click button so how do I move windows around the screen? Launcher bar: I've set mine to auto hide (which it does) but what exactly do you have to do to get it back? I just repeatedly jab the mouse at the side of the screen and eventually it pops up. I don't mind starting all over again but obviously a quick fix is preferred ;) Mike Ubunto 14.04.1 LTS Kernel 3.13.0-32-generic PS Sorry for so many questions.

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  • Can I run ubuntu server 64 bit in a VirtualBox on a macbook host ?

    - by Doron
    Hello, I have a macbook pro with Intel Core 2 Due (It's actually not Pro, but it's a January 2009 unibody macbook - when there were both a unibody macbook, and a unibody macbook pro). I'm a php developer. I just installed a new hard drive, and in an effort to create a better development environment, I decided I'll try to create a virtual machine running ubuntu server. Since I need it to work fast (and since, well - it's just better, even if by a little) and I'll already have a delay due to the nature of the apache server being on a virtual host - I want to install a 64 bit version of ubuntu server. Can VirtualBox handle it? Is it s good idea to create such a development environment ? Thank you.

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  • How can i install ubuntu on my ntfs hdd without formatting?

    - by Ridvan Coban
    My hdd is just one partition in ntfs (500gb) and 430 gb is used by my photos/movies/music etc which i never will want to lose. Actually i installed ubuntu on a usb flash drive (using it right now) but it is too slow that way. But my problem is : My computer is damaged ( maybe chipset or but not sure) and none of the windows versions (xp,vista,7) works on my pc. I get blue screen error as soon as windows startup logo shows. But ubuntu just works flawless. That means i cannot use wubi. I wanted to shrink my hdd without losing data (which can be done in windows) but found nothing about that on ubuntu forums. Is this possible? Or install ubuntu on my ntfs filesystem? Note : I don't have chance to backup 400 gbs of data. Sorry for my question if it's written a bit compex. I hope you get the point and someone has an idea ;)

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  • System broken after installing Gtk+-3.4.1 with broadway backend enabled

    - by Roman D. Boiko
    I am running Ubuntu 11.10 from VirtualBox. I installed Gtk+ 3.4.1 (latest stable release) from sources with X11 and broadway backends enabled. In order to do that, I also installed latest versions of glib, libffi, libtiff, libjped, gdk-pixbuf, and pango. Each of them was configured with default options. I.e., they were installed to /usr/local (at least, I see respective folders in /usr/local/include). After reboot and login (regardless which user), desktop is grey for about 30 sec, nothing is displayed. Then Nautilus starts, but nothing else (my locale is Ukrainian, but there is nothing important in text): . During boot, I can access command prompt as root, use dpkg, etc. But I don't know what to do. One idea is to reinstall Gtk+ and other libraries with prefix /usr or /usr/shared. I will try that, but it is quite time-consuming, so any ideas would be welcome. Reverting to earlier snapshot is still possible, but it is 6 days old and I would like to try to solve the problem.

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  • Slow Starting DHCP Client Service - HP Thin Clients

    - by Ryan
    We have recently began adding XPe thin clients to our domain in preperation for a new citrix environment. One thing that has been picked up on in testing is that they appear slow to boot. The issue manifest's it's self as the classic "Applying Computer Settings..." screen we are all used to seeing. After digging into the issue it appears the DHCP Client service is taking some time to load on boot, this varies but I would estimate it can take around 1 minute in some cases. I've eliminated the classic issues, DHCP is responding correctly and in quick time. DNS is not the cause and GPO's are applying promptly. A simple workaround is to assign the client a static IP which work's great so the TCP/IP servies are obviously firing up quickly, just not DHCP Client. Does anyone have any idea's on how I may be able to improve the service start time? Keen to find a better solution before I get my arm twisted into setting up 250 thin clients with static addressing!

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  • what are some good interview questions for a position that consists of reviewing code for security vulnerabilities?

    - by John Smith
    The position is an entry-level position that consists of reading C++ code and identifying lines of code that are vulnerable to buffer overflows, out-of-bounds reads, uncontrolled format strings, and a bunch of other CWE's. We don't expect the average candidate to be knowledgeable in the area of software security nor do we expect him or her to be an expert computer programmer; we just expect them to be able to read the code and correctly identify vulnerabilities. I guess I could ask them the typical interview questions: reverse a string, print a list of prime numbers, etc, but I'm not sure that their ability to write code under pressure (or lack thereof) tells me anything about their ability to read code. Should I instead focus on testing their knowledge of C++? Ask them if they understand what a pointer is and how bitwise operators work? My only concern about asking that kind of question is that I might unfairly weed out people who don't happen to have the knowledge but have the ability to acquire it. After all, it's not like they will be writing a single line of code, and it's not like we are looking only for people who already know C++, since we are willing to train the right candidate. (It is true that I could ask those questions only to those candidates who claim to know C++, but I'd like to give the same "test" to everyone.) Should I just focus on trying to get an idea of their level of intelligence? In other words, should I get them to talk and pay attention to the way they articulate their thoughts, and so on?

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  • Do virtual machines perform better on the host HDD or USB drive?

    - by Jeremy Ricketts
    The question I'm asking is kind of general, and I'll give more specifics about my specific setup. Here's the main question though: Do virtual machines generally perform better on the host HDD or is it better to operate them from an external disk? My specific setup: A Macbook Pro with a nearly full internal SATA drive that spins at 7200. On this system I'm running large programs like Photoshop and some other RAM-intense applications. I've dedicated 2 of my 8 gigs of RAM to my VMware Fusion virtual machine, which runs Windows 7 and Visual Studio, sits on the same drive. When that thing boots up, my system really starts crawling. I have an external USB (specifics of that drive are here) which I'm thinking about moving the VM to. Obviously a USB drive is slower than my internal HDD, but maybe having two operating systems using the same disk is WORSE than putting one of them on a separate (albiet slower) disk. This a bad idea?

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  • What is a easiest way to implement Mail Server in ubuntu and hook in webmail through XAMPP?

    - by Parris
    Hi Everyone, I currently have xampp running on my ubuntu server. I tried a variety of things including installing, postfix+dovecot+roundcube+postfixadmin (postfix+dovecot work I think, postfix admin also works, roundcube works and connects to dovecot but i cant create user accounts, or figure out how that works), citadel (it installed, but I have no idea how to make it work with xampp for webmail) and i tried messing with exim and vexim a bit also. In short I feel like this should be a lot easier, and I can't figure it out haha. XAMPP works fine. I got my server running with everything. I was thinking about mercury mail, but I need a webmail solution also. I was thinking about google apps, but 50 bucks a year per user is a steep change from free. Thanks for the help!

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  • Huwawei E220 broadband dongle not working

    - by Roshnal
    The problem is, I have used Ubuntu from 6.10 upto 11.10. And upto 11.04 I used my same USB 3G dongle to connect to broadband and it worked fine. But 2 days ago I upgraded to Ubuntu 11.10 and broadband is not working. It detects my dongle and creates a connection without a problem, but when connecting it just keeps on and on for a long time and then say I'm offline. So I did a clean install and the same thing occurred. But I also have a netbook and its got Ubuntu 11.10. I tried using the same dongle for internet on that netbook and it worked fine without any issues. But this isn't a problem with my USB port on my main machine or something like that because I'm also using Windows on my main machine (dual-boot) and its working fine. My hardware: Main computer (one that I'm trying to connect): 2.8GHz dual core Intel 2GB RAM 500GB Sata II HDD 384MB Video Memory (Intel G31/G33 chipset) Ubuntu 11.10 (32bit) My NetBook (broadband working fine): 1.6GHz Intel Atom (dual core) 1GB DDR3 RAM 250GB HDD 128MB Video Memory (Intel something-I-can't-remember) Ubuntu 11.10 (32bit) My dongle is a Huawei E220 and ISP is Dialog GSM (I'm in Sri Lanka) So any idea why this is? I really love Ubuntu and this is bugging me off.. Any help greatly appreciated. Regards, Roshnal

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  • Can I install new version of Ubuntu in spair RAIDed partition with unetbootin

    - by artfulrobot
    I have Ubuntu 11.04 running on my home desktop which has 2 hard drives mirrored by RAID. The drives are partitioned with a big data partition, a swap partition and a couple of 20Gb partitions for OSes, one is 11.04 which is in use, and the other is kept spare for installing a later version. Which is what I'd like to do now. The idea of a 2nd partition for new OS is that I can try it, and if it's problematic, I can boot back into the original one - the machine is shared with others, so I need it to stay available! I have had horrible problems with software RAID after using a Live USB stick - basically it messes up the internal numbering of the RAID drives or something, anyway, the result is you can't boot after using it :-( and have to spend ages re-assembling the arrays, trying to remember grub commands etc etc. Quite a shocker when you consider booting from a Live USB is supposed not to affect the existing system. As I'm installing in a RAIDed disc, I would typically use the Alternative install (sad to hear that this is going to be dropped in future). However, I think I might be able to use unetbootin to trick the system into working on top of the existing system that understands RAID, with the normal ISO? If unetbootin loads from drives that are already understood to be RAIDED, then presumably it will only see md0... instead of sda, sdb... and as long as I don't need to repartition (I don't) it should be fine, right? Or is that just plain foolishness? Please tell me before I end up with a dead system (again!)

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  • Clean toshiba a300d 14r

    - by pask
    Hi all, i'm not able to open my notebook, a toshiba a300d-14r. Googling i don't find any useful information... This is official site: http://it.computers.toshiba-europe.com/innovation/jsp/SUPPORTSECTION/discontinuedProductPage.do?service=IT&PRODUCT_ID=1056713&DISC_MODEL=1#0 Anyone have an idea to open it. The fan goes crazy when power on and i suppose that is full of dusty. I need to clean the fan... Is there a guide or a useful information to do it? thanks, A

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  • Clean toshiba a300d 14r

    - by pask
    Hi all, i'm not able to open my notebook, a toshiba a300d-14r. Googling i don't find any useful information... This is official site: http://it.computers.toshiba-europe.com/innovation/jsp/SUPPORTSECTION/discontinuedProductPage.do?service=IT&PRODUCT_ID=1056713&DISC_MODEL=1#0 Anyone have an idea to open it. The fan goes crazy when power on and i suppose that is full of dusty. I need to clean the fan... Is there a guide or a useful information to do it? thanks, A

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  • Windows 7 Green Load Bar Stuck and never finish loading,

    - by Levan
    Here is my issues, which i am currently having, in my windows 7, When i go to one specific folder, .Please take a look, This is not my file, but just to get an idea, there is 10 file max no more than 500 MB, i am not able to remove it, or cut it, or move it, it starts that green bar loading and never finish, The problem is, after getting into this folder, my SONY VAIO starts, overheating and if i did not restart, nothing can stop it to be cool down . I have reinstalled windows 2 weeks ago, i don't think this should be issue regarding it. Please, help me what the hell i should do with this GREEN BAR< to stop this headache,

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  • If a library doesn't provide all my needs, how should I proceed?

    - by 9a3eedi
    I'm developing an application involving math and physics models, and I'd like to use a Math library for things like Matrices. I'm using C#, and so I was looking for some libraries and found Math.NET. I'm under the impression, from past experience, that for math, using a robust and industry-approved third party library is much better than writing your own code. It seems good for many purposes, but it does not provide support for Quaternions, which I need to use as a type. Also, I need some functions in Vector and Matrix that also aren't provided, such as rotation matrices and vector rotation functions, and calculating cross products. At the same time, it provides a lot of functions/classes that I simply do not need, which might mean a lot of unnecessary bloat and complexity. At this rate, should I even bother using the library? Should I write my own math library? Or is it a better idea to stick to the third party library and somehow wrap around it? Perhaps I should make a subclass of the Matrix and Vector type of the library? But isn't that considered bad style? I've also tried looking for other libraries but unfortunately I couldn't find anything suitable.

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  • A new clients come into my web agency. How to configure email and social accounts to work better? [on hold]

    - by Marco Panichi
    I created websites for many years but still have not found the right way to organize all the email and social accounts of every clients. I mean, every web agency follows dozens of customers. Each client needs at least Google Analytics, AdWords, a Facebook page, a Twitter profile, a Youtube channel, probably a listing on Google Places and maybe a Mail Chimp (or similar) account. The web agency, in my opinion, must own these accounts, use them to deliver results to the customer and -of course- make them available to the customer for two reasons: - The customer must be able to see how things are going - The client must have the ability to change web agency without suffering The web agency, however, has many problems in having all of these accounts. For example, I like the idea of having a Gmail account for each client and from that account use all the products of Google. But is not possible to create more than many Gmail account from the same ip address and with the same phone number. The web agency could invite the customer to create his own accounts but: - This is not necessary a value for the customer (indeed...) - The web agency would manage them, however, from the same ip address, incurring in problems - If phone verification occurs, the web agency has to disturb the customer for verification Have you the same problem? How to solve it?

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  • Does LDAP fit the role of a user database for an application?

    - by Spredzy
    I (my company) run a webservice that integrates pieces of few entreprisey-level software. Most of them offer different type of authentication but all offers at least LDAP. I was wondering if storing my application users directly in an LDAP directory would be a good idea. This way all the application I am using could rely on it for authentication purpose. I am aware that LDAP is not a database per se, but it is a datastore. I am also aware that there is no kind of constraints thus deleting a user on the LDAP directory won't do anything on my actual data, but this case would be taken care of with an extra process. My main question here is : is there any reason why I shouldn't use LDAP as my users database ?

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