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• Windows 7 blocks network access to network-installed apps

  - by VokinLoksar

  Windows 2008 R2 domain. Users, running Windows 7 Enterprise, are trying to run some software from a network share. Specifically, I've tested this with MATLAB and PuTTY. When starting, MATLAB has to contact a licensing server to get its license. This action fails for regular users when they start MATLAB from the network share. However, if they copy the installation directory to a local disk everything works fine. Running MATLAB as an admin user from the network share also works. Same story with PuTTY. If the executable is launched from the share, regular users cannot connect to any servers. Something is blocking network communications for programs that are launched from a network drive. Here's the only other mention I could find of the same problem: https://social.technet.microsoft.com/Forums/en-US/w7itpronetworking/thread/4504b192-0bc0-4402-8e00-a936ea7e6dff It's not the Windows firewall or the IE security settings. Does anyone have any clue as to what this is?

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• useful JMX metrics for monitoring WebSphere Application Server (and apps inside it)?

  - by Justin Grant

  When managing custom Java applications hosted inside WebSphere Application Server, what JMX metrics do you find most useful for monitoring performance, monitoring availability, and troubleshooting problems? And how do you prefer to slice and visualize those metrics (e.g. chart by top 10 hosts, graph by app, etc.). The more details I can get, the better, as I need to specify a standard set of reports which IT can offer to owners of applications hosted by IT, which those owners can customize but many won't bother. So I'll need to come up with a bunch of generally-applicable reports which most groups can use out-of-the-box. Obviously there's no one perfect answer to this question, so I'll accept the answer with the most comprehensive details and I'll be generous about upvoting any other useful answer. My question is WebSphere-specific, but I realize that most JMX metrics are equally applicable across any container, so feel free to give an answer for JBoss, Tomcat, WebLogic, etc.

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• How can I regress a number series in Excel?

  - by jcollum

  I'd like to use these data to derive an equation using Excel. 300 13 310 12.6 320 12.2 330 11.8 340 11.4 350 11 360 10.8 370 10.6 380 10.4 As x goes up, y goes down. Seems straightforward. But when I do a polynomial regression on these data, even though the trendline matches the data pretty well, the equation it generates doesn't work. The equation is When I plug in x values to that equation, the numbers go up! So something is pretty wrong here. My steps: place both number series in excel select the second set (13, 12.6 ...) plot a line graph set the first set as the x axis labels select Series1 and add a polynomial (2) trendline, display equation, display R-squared That produces the equation above, with an R^2 value of .9955. But when I use that equation, it doesn't produce those outputs for those inputs. Clearly I'm doing something wrong.

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• Finding, which web component is causing problems during page loading

  - by Juhele

  I am using windows version of Firefox 5.0 and last few days I found that on one website (similar focus as stackexchange but in Czech), is something wrong as my browser loads it very slowly (while the connection is ok and never had problems with it). There is also another guy trying to solve the almost the same problem, but no help yet. So I would ask, whether there is some Firefox plugin showing which page components are loading and which could help me to find out the problem. I am writing from office pc so we have blocked all the social networks like FB, Twitter etc. and I also use Adblock Plus - however, deactivating it does not have any effect on it. thanks

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• How can I get the size of an Amazon S3 bucket?

  - by Garret Heaton

  I'd like to graph the size (in bytes, and # of items) of an Amazon S3 bucket and am looking for an efficient way to get the data. The s3cmd tools provide a way to get the total file size using s3cmd du s3://bucket_name, but I'm worried about its ability to scale since it looks like it fetches data about every file and calculates its own sum. Since Amazon charges users in GB-Months it seems odd that they don't expose this value directly. Although Amazon's REST API returns the number of items in a bucket, [s3cmd] doesn't seem to expose it. I could do s3cmd ls -r s3://bucket_name | wc -l but that seems like a hack. The Ruby AWS::S3 library looked promising, but only provides the # of bucket items, not the total bucket size. Is anyone aware of any other command line tools or libraries (prefer Perl, PHP, Python, or Ruby) which provide ways of getting this data?

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• Windows Update Fails to install updates

  - by resolver101

  Windows update fails to install the updates below. How do I fix this, I've installed the fix it application Microsoft recommends but it still fails. Any ideas how to fix this? Update for Microsoft Outlook Social Connector 2010 (KB2553406) 32-Bit Edition Update for Microsoft OneNote 2010 (KB2553290) 32-Bit Edition Update for Microsoft Office 2010 (KB2553310) 32-Bit Edition Windows Internet Explorer 9 for Windows 7 for x64-based Systems Update for Microsoft Outlook 2010 (KB2553248) 32-Bit Edition I've also attached the windows update log if that helps. The machine is a Windows 7 and we run a windows 2008 SBS domain.

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• SQL Server 2008 R2 Writing To Text File

  - by zzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

  I used to write to text files from SQL Server using the code listed below: DECLARE @FS INT --File System Object DECLARE @OLEResult INT --Result message/code DECLARE @FileID INT --Pointer to file --Create file system object (OLE Object) EXECUTE @OLEResult = sp_OACreate 'Scripting.FileSystemObject', @FS OUT IF @OLEResult <> 0 PRINT 'Scripting.FileSystemObject.Failed' -----OPEN FILE----- EXECUTE @OLEResult = sp_OAMethod @FS, 'OpenTextFile', @FileID OUT, @FileName, 8, 1 IF @OLEResult <> 0 PRINT 'OpenTextFile.Failed' It appears this is no longer supported in sql server 2008 r2. How should I export to text files in sql server 2008 r2? Link claiming this is no longer supported: http://social.msdn.microsoft.com/Forums/en/transactsql/thread/f8512bec-915c-44a2-ba9d-e679f98ba313

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• How to measure startup time and order of Windows services on boot?

  - by djangofan

  I am not asking how to measure server startup time here. I am wondering if anyone knows of a tool that can measure and show a graph of the startup time and order of all the windows services during system startup. I saw a software program shown on my local Portland news last week that does this but I am unable to remember what it was called or anything else about it. All I remember is that it was a "tech" news story to help computer users with their computers. So, I know the software exists and I am trying to find it.

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• Privoxy rule to block Facebook spying

  - by bignose

  Recently, my server's Privoxy rules to block Facebook's spying have failed. How can I block current Facebook spying links? Since soon after [the inception of Facebook's so-called “Open Graph” cross-site tracking widgets][1] (those “Like” bugs on numerous websites), I blocked them by using this rule (in user.action) on our site's Privoxy server: { +block-as-image{People-tracking button.} } .facebook.com/(plugins|widgets)/(like|fan).* That worked fine; the spying bugs no longer appeared on any web page. Today I noticed that they're all making it past that filter [edit: no, they're not]. SOLUTION: The proxy was being silently ignored, though this was not obvious in the client. The above rule continues to work fine.

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• latency, regular alternations. Pfsense, network

  - by Tillebeck

  Any idea why grapgh is a shown? It i two pfsense boxes and I have not looked into where they ping to and if it is related to the server they ping. Trafic graphs are following a normal 24 hour cycle and not related to either of the latency graphs Img1: High frequent ulteration in latency. Just started a few days back. Peaks are not perfectly regular but varies from 40min to 1hour Img2: This is a different router on another internet connection. Most of our routers shown this kind of latency graphs - so for our setup it is "normal". Please note that second graph is for a whole week and not just some hours

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• Downloading source via bazaar

  - by beanaroo

  Forgive me if this is a stupid question or an inapproptiate place to ask. This is my first time attempting to download source by means of bazaar (launchpad). Regardless of the package or branch... I always get an error like the following: bzr: ERROR: Revision {[email protected]} not present in "Graph(StackedParentsProvider(bzrlib.repository._LazyListJoin(([CachingParentsProvider(None)], []))))". I have looked all over and cannot find an answer. What does this mean? How can I resolve it? Many thanks. ---edit--- Ubuntu 12.10 running BZR-2.6.0Commands include but are not limited to: bzr branch lp:ubuntu/quantal-proposed/ubiquity bzr branch lp:ubuntu/quantal/ubiquity bzr branch lp:ubuntu/quantal/ubiquity-slideshow-ubuntu bzr branch lp:nano (just to test) bzr branch lp:ubuntu/quantal/transmission (just to test)

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• nginx errors: upstream timed out (110: Connection timed out)

  - by Sparsh Gupta

  Hi, I have a nginx server with 5 backend servers. We serve around 400-500 requests/second. I have started getting a large number of Upstream Timed out errors (110: Connection timed out) Error string in error.log looks like 2011/01/10 21:59:46 [error] 1153#0: *1699246778 upstream timed out (110: Connection timed out) while reading response header from upstream, client: {IP}, server: {domain}, request: "GET {URL} HTTP/1.1", upstream: "http://{backend_server}:80/{url}", host: "{domain}", referrer: "{referrer}" Any suggestions how to debug such errors. I am unable to find a munin plugin to keep a check on number of upstream errors. Sometime the number of errors per day is way too high and somedays its a more decent 3 digit number. A munin graph would probably help us finding out any pattern or correlation with anything else How can we make the number of such error as ZERO

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• 'DNS service isn't responding' in windows 7

  - by pradeeptp

  Hi All, I bought a brand new Dell Studio 1558 just last week. It has windows 7 home premium 64-bit installed on it. My friend who is occupying the adjacent room has a laptop with windows XP. Both of us are connecting to the same wireless router of the hotel. My friend is able to connect to the wireless network without any trouble, but when I try to connect, I get the error "DNS service isn't responding". I met two more people in the same hotel with win XP laptop and they too dont have any problem. I have gone to possibly all the forums and website but I haven't been able to fix this error :(. I have done all the basic troubleshooting but I have no luck yet. Pls help. Following is one forum where the problem seem to have been trouble shooted but not for all. http://social.technet.microsoft.com/Forums/en/w7itpronetworking/thread/eeb84518-903d-46d1-9398-80cf211878d7

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• What kind of proxy acl rules should be applied?

  - by user42891

  I try to block sites in squid based on this article. Assuming you would want to block access to Yahoo (e.g http://www.yahoo.co.jp, http://www.yahoo.com, http://www.yahoo.co.in), you would ideally want to block all of the above URLs, if I use a regular expression and try to search something called yahoo it seems to get blocked. We are just interested in applying rules which would be most commonly used across all companies (e.g. social networking sites like facebook, orkut), porn sites (e.g. sex), gaming sites (games), movie & song download sites, and sites where they can upload data (e.g. rapidshare) What would be the common set of effective rules in achieving the above?

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• Server 2008 SP1 VSS Writers Not Responding

  - by Jason

  I've got a Windows Server 08 box on SP1 that is having some problems. We've experienced backup problems and I've traced it down to VSS Writers not responding. From the command line, if I type vssadmin list providers, I get Provider name: 'Microsoft Software Shadow Copy provider 1.0' Provider type: System Provider Id: {b5946137-7b9f-4925-af80-51abd60b20d5} Version: 1.0.0.7 If I type vssadmin list writers, I get this vssadmin 1.1 - Volume Shadow Copy Service administrative command-line tool (C) Copyright 2001-2005 Microsoft Corp. Waiting for responses. These may be delayed if a shadow copy is being prepared. I could wait this out for hours and it won't move. I looked up how Server 2008 handles VSS writers, and you can't reregister them like you could in Server 2003 http://social.technet.microsoft.com/Forums/en/windowsserver2008r2general/thread/062cc52c-899b-45f3-8d0c-798b92363f41 Does anyone know how to fix something like this or where to turn next?

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• What to do with old hard drives?

  - by caliban

  I have over 100+ old hard drives, ranging from 100MB Quantums to 200GB WDs, most of them PATA, some SATA. Most still working. The squirrel mentality runs in my family - hoard everything, discard nothing. Thus, and this is a relevant question - any suggestions on how to put these drives to use (anything) instead of them just being deadweights and space takers around the office? Hopeful objectives and suggestions to keep in mind when you post an answer : Should showcase your geekiness, or plain fun, or serve a social purpose, or benefit the community. You do not need to limit your answer to only one hard drive - if your project needs all 100++, bring it on! Your answer need not be limited to one project per hard drive - if one hard drive can be used for multiple projects, bring it on! If additional accessories need be purchased, make sure they are common. Don't tell me to get a moon rock or something. The projects you suggested should serve a utility, and not just for decoration purposes.

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• Debug unstable Apache server under Debian

  - by almo

  Since yesterday my Apache server that runs on a Debian machine runs very unstable. Sometiems my websites load and sometimes not. I think it has to do with the memory since my Apache log is full of Out of memory (allocated 262144) (tried to allocate 4480 bytes). I also attached a screenshot of the memory graph. A server restart resolves the problem temporarily. I looked at the processes that are using memory but the biggest one is MySQL with 6.5%. Where else can look for the problem? Edit: I did a free -m right after rebooting and one about 2 hours later. I think the trend is visible: root@xxx:~# free -m total used free shared buffers cached Mem: 4016 731 3284 0 80 200 -/+ buffers/cache: 449 3566 Swap: 459 0 459 root@xxx:~# free -m total used free shared buffers cached Mem: 4016 2466 1550 0 92 473 -/+ buffers/cache: 1900 2115 Swap: 459 0 459

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• How to plot 3D graphs in Excel from CSV data?

  - by Primx

  I have data formatted like this in a csv file: a, 1, 4, 6.0 a, 2, 42, 16.0 a, 5, 14, 69.3 a, 11, 4, 7.0 b, 1, 45, 6.0 b, 2, 45, 1.9 b, 9, 2, 4.4 b, 11, 4, 7.9 lines with first parameter a is one set of data, and first parameter b represents another set. My aim is to plot two lines on the same graph, one with points (1, 4, 6.0), (2, 42, 16.0), (5, 14, 69.3), (11, 4, 7.0) and the other with points (1, 45, 6.0), (2, 45, 1.9), (9, 2, 4.4), (11, 4, 7.9) I am able to import the data directly in MS Excel, but am not sure how to plot them. How can I plot this data?

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• SSD Performance for PHP?

  - by Andrew Fashion

  My programmer just built an application with PHP using Doctrine ORM (will be a high traffic social networking website), and it's very heavy in PHP/Apache and CPU. The queries are wonderfully fast, and MySQL is barely using any CPU, it's just Apache. I was curious to if an SSD would help speed up PHP/Apache, because I know the bottleneck is in PHP reading multiple files, class files, and loading up a bunch of data. So common sense makes me think if PHP is reading multiple PHP files, an SSD would only help as far as read/write? I was thinking of doing a high performance SSD for the PHP application, but for user image uploads, I would just continue using a 15k SAS. Is there any performance issues regarding using an SSD in this kind of situation? And would it prove to help speed up PHP/Apache, and help the CPU problem out?

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• Nagios and rrd on a old server

  - by Pier

  I have an old server (P4 based) on which nagios (and all the other tools to monitor) is running. In the last few weeks we are seeing a strange behavior. In the /var/spool/pnp4nagios (where temporary files are stored before getting processed by pnp4nagios daemon) we have many files like perfdata.1274949941-PID-18839 and we get an error in npcd.log: [05-27-2010 11:17:46] NPCD: ThreadCounter 0/15 File is perfdata.1274951306-PID-27849 [05-27-2010 11:17:46] NPCD: File 'perfdata.1274951306-PID-27849' is an already in process PNP file. Leaving it untouched. Sometimes some graph are not drawn. The server is pretty loaded (around 5-6 normally) and i suspect that npcd goes in timeout and leave those files behind. What could I do (apart from change the server)? Few infos about the system: centos 5.5 nagios 3.2.1 pnp4nagios 0.6 (from sources) Thanks

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• Tools for tracking disk usage

  - by Carey

  I manage a number of linux fileservers. These all run applications written from 0-10 years ago. As sometimes happens, a machine will come close to, or run out of disk space. Reasons include applications not rotating log files, a machine with 500GB of disk producing 150GB of new files every month that were not written to tape, databases gradually increasing in size, people doing silly things...generally a bit of chaos. Anyway, when a machine unexpectedly goes from 50% to 100% full in a couple of hours, I figure out what broke (lots of "du") and delete files or contact someone. I also can look at cacti graphs to figure out what the machine's normal disk usage is (e.g. for /home). Does anyone know of any tools that will give finer grained information on historial usage than a cacti/RRD graph? Like "/home/abc/xyz increased 50GB in the last day".

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• Looking for an open source real-time network analysis program

  - by JrSysAdmin

  Can somebody recommend an open source real-time network analysis program? What I'm looking for the program to do is display a graph of bandwidth usage by IP within our internal network that can quickly be viewed any time we need to (typically when we want to quickly find out who is utilizing high amounts of bandwidth and slowing down the network). We ideally simply want to hook up a monitor on the wall of our server room to a system whose NIC will be in permissive mode to log all network activity in a visual manner which can easily be seen and running 24/7. Prefer open source as I do not have a budget for this project and prefer open source projects in general. I'd also prefer for this to be available for CentOS but any linux distro or Windows OS would be acceptable. Thanks!

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• what does the 'm' unit in munin mean?

  - by nbv4

  I'm using munin as a tool for monitoring my servers. On some of the graphs, the units are marked with a 'm'. For instance, my apache accesses graph is labeled 100m, 200m, 300m, along the y-axis. What does the 'm' mean? I understand 'M' (caps) is mega as in megabytes, the 'k' is kilo, the 'G' is giga, but what about 'm'? At first I thought it was million, but theres no way apache is serving 100 million accesses even per decade.

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• Windows 2008 R2 on ESXi 4.1 cpu utilization kernel high

  - by MK.

  I have a Win2k8 guest running on ESXi 4.1. The host has 12 cores and the problem happens even if the guest is the only VM on the host. We have 4 cores dedicated to the guest. We noticed that network starts chocking when the CPU load goes up. After some testing we noticed that when running a simple CPU hogging tool set up to run 3 threads at 100% the regular CPU load goes to 75% like it should and the "kernel times" graph in task manager goes up to 25%. My intuition tells me that the network problem and kernel times problem are the same. This is confirmed by another similar VM we created on the same host which doesn't have either of the problems. VMWare tools are obviously installed. The nic is e1000. What else can we do to troubleshoot this?

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• How to find out the dependency paths?

  - by ???

  For example, there are packages and their dependencies: a -> b (a require b) b -> c & d x -> a y -> x z -> x z -> x & y Now, give c and z, there are two dependency paths: z -> x -> a -> b -> c z -> y -> x -> a -> b -> c The question is how to find out the dependency paths between two specific Debian packages? P.S. The idea behind is to draw the dependency graph for a given set of packages, include the intermediate ones missing in the chain.

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