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  • Valid IP address but can't surf without rebooting

    - by Kat
    I periodically lose internet and router connection at home. When this happens, others are using the router just fine. I am connecting directly through a wired connection to a Belkin router. I can release and renew the IP (and the IP addresses change to 0.0.0.0 and to an IP in my router's range beginning with 192.168.2. as they should) but still can't surf, can't access the router interface. Cycling the router doesn't help, and again, others are able to access the router fine at this time. Only rebooting the computer resolves the issue, and everything is wonderful for a few hours- and then I lose connection again. I have several ideas where to go from here, but I'd like to get some advice first. (Using Windows XP SP3, hardwired connection) Update As stated in the originally, releasing and renewing doesn't solve the issue. However, I have an update. I can ping localhost and my router IP with no problem at all when the issue occurs. However, repairing the network connection does not help. I AM able to get back on by disabling and then re-enabling the network connection in XP. What does that tell us?

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  • USB 3.0 hard disk not detected on a particular host controller?

    - by Alvin Wong
    I have a USB 3.0 hard disk which has always been working on my desktop with an XHCI. Now I just bought a notebook with an XHCI (something with Intel's Ivy Bridge setup). The first time I plug the hard disk in its 3.0 port it is detected and working. A few hours later I try to connect it again, but seems that the notebook just ignored it! The light on the hard disk didn't blink as usual (instead it is hold at on). I then tested it with my desktop again and it is working perfectly. It gets trickier when I plug it in the USB 2.0 port of that notebook it is detected and working perfectly (despite the slower speed). Then I try to plug in an USB 2.0 USB flash drive to that USB 3.0 port, and it is detected (of course as USB 2.0). So, there are two USB 3.0 ports on my notebook's XHCI. Both of them are not working with my hard disk but working perfectly fine with my USB 2.0 UFD. What's wrong with it? When I plug in the hard disk, device manager doesn't change. I've tried re-installing the driver for the XHCI, but it changes nothing. Had I broke the USB 3.0-specific pins of both USB 3.0 ports?

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  • MGE UPS Cut power - What happened?

    - by JT.WK
    I have 3 x MGE Pulsar M 3000 2700w UPS units within my server room which have run perfectly up until now. On Saturday morning I noticed that one of these UPS units was no longer outputting power, the lcd displayed a message saying "load not powered" and told me to press the power button to start output. Needless to say that the servers, switches and routers is was supporting were all turned off. I tried pressing and even holding the power button, but the unit refused to start back up again. Only power cycling the unit got it back up again. I have checked the logs on the UPS, although they were useless. Nothing out of the ordinary, and no email notifications had been sent. The output level sits on about 51% and all battery checks are OK. It is now three days on and the UPS is still up and running (although I am scheduling an outage to get it out of there ASAP). Does anyone have any idea what could have gone wrong here? Is there anything else that I can check that could help?

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  • Windows 7 restarts while being idle

    - by Ondrej Slinták
    My Windows 7 almost always restarts when I keep it idle for ~20-30mins. It happened randomly before, but lately, if I leave the computer I can be sure it's gonna restart after those 30mins. It never happens when I play games or work tho, just when it's idle. It's a fresh install of Windows 7 64bit. I had also problems while installing it, it always crashed while finalizing the install and I had to reinstall again. Eventually it installed on 3rd or 4th try after I deleted all of my partitions and added them again. I thought it might have been a hardware problem, but temperatures seem to be okay and I have no idea how to track what might have been causing it. Any ideas? I'm running Windows 7 64bit on: Gigabyte EX58-UD4P Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz NVIDIA GeForce GTX 260 6GB of DDR3 1066Mhz RAM WDC WD1001FALS-00J7B0 1TB SATA II I have a very bad feeling it might be something with HDD and its compatibility with Windows 7 as I haven't had those problems for 1 year while I had Vista.

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  • Munin graphing by CGI

    - by Vaughn Hawk
    I have Munin working just fine, but any time I try to do cgi graphing - it just stops graphing... no errors in the log, nothing. I've followed the instructions here: http://munin-monitoring.org/wiki/CgiHowto - and it should be working - here's my munin.conf setup, at least the parts that matter: dbdir /var/lib/munin htmldir /var/www/munin logdir /var/log/munin rundir /var/run/munin tmpldir /etc/munin/templates graph_strategy cgi cgiurl /usr/lib/cgi-bin cgiurl_graph /cgi-bin/munin-cgi-graph And then the host info yada yada - graph_strategy cgi and cgrurl are commented out in munin.conf - that's because if I uncomment them, graphing stops working. Again, I get no errors in logs, just blank images where the graphs used to be. Comment out cgi? As soon as munin html runs again, everything is back to normal. I'm running the latest version of munin and munin-node - I've tried fastcgi and regular cgi - permissions for all of the directories involved are munin:www-data - and my httpd.conf file looks like this: ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory /usr/lib/cgi-bin/> AllowOverride None SetHandler fastcgi-script Options ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> <Location /cgi-bin/munin-cgi-graph> SetHandler fastcgi-script </Location> Does anyone have any ideas? Without this working, at least from what I understand, Munin just graphs stuff, even if no one is looking at them - you add 100 servers to graph, and this starts to become a problem. Hope someone has ran into this and can help me out. Thanks!

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  • Google Chrome doesn't want to access Facebook

    - by Pieter van Niekerk
    I have been experiencing a bit of a problem with Chrome over the last couple of days where it doesn't want to access Facebook. When I open Chrome it works fine for a while and then if I were to refresh the page it would give me the Chrome 'This webpage is not available' message. This webpage is not available Google Chrome could not load the webpage because www.facebook.com took too long to respond. The website may be down, or you may be experiencing issues with your Internet connection. Here are some suggestions: Reload this webpage later. Check your Internet connection. Restart any router, modem, or other network devices you may be using. Add Google Chrome as a permitted program in your firewall's or antivirus software's settings. If it is already a permitted program, try deleting it from the list of permitted programs and adding it again. If you use a proxy server, check your proxy settings or contact your network administrator to make sure the proxy server is working. If you don't believe you should be using a proxy server, adjust your proxy settings: Go to the wrench menu Options Under the Hood Change proxy settings... LAN Settings and deselect the "Use a proxy server for your LAN" checkbox. This problem only persists when using the proxy and doesn't occur at all when not on the proxy. I have also tried different browsers (IE9 and Firefox 9.01) but it doesn't occur in any of them. This problem goes away for a while when I restart Chrome, only to happen again a couple of minutes later. I have tried deleting the cookies for Facebook without restarting Chrome, but to no avail. I am using Windows7 with Chrome 17

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  • Certain Japanese characters aren't displayed properly

    - by Nisto
    On the following site: http://www.nciku.com/search/radical the first 2 characters on the second row of the "Step 2" table aren't displayed properly. All other characters look fine. I tried re-installing the Asian fonts via the checkboxes regarding Asian fonts in the "Regional and Language Options" control panel applet. I have tried removing every single Font from the Fonts folder (some were ofcourse not possible to remove), and re-installing them all again. I did this by... Running cmd Closing down the explorer process In cmd; using the command DEL /F /S /Q * in the Fonts folder Putting in my XP SP3 Retail disc In cmd; using expand -r *.tt_ in the I386 folder on the XP disc (and any other font file, in the I386\LANG folder) I also tried installing this pack from Microsoft, but this solved nothing either. I even tried running my browser (Firefox) through AppLocale. And changing character encoding -- again, does not help. I've also tried viewing the page in Internet Explorer. What could be wrong? I have checked my Fonts folder, to make sure that every single font available on the XP disc is available in WINDOWS\Fonts. What shows in the first square on the second row - I can't really tell what it's supposed to look like (but it's not the proper character)... but the second square shows a rectangular symbol containing HEX code. I've been in this situation before -- and it has been when I've been missing fonts. But how could I possibly be missing a necessary font? Shouldn't it be provided in the Asian "font packages"? I've talked to some other users that has viewed the page, and they had no problems displaying those characters on second row - even though they're only using the fonts provided on the Windows installation disc. Windows XP Professional Service Pack 3 (x86 - with latest updates) Firefox 3.6.15

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  • Probability of Blade Chassis Failure

    - by ChrisZZ
    In my organisation we are thinking about buying blade servers - instead of rack servers. Of course technology vendors also make them sound very nice. A concern, that I read very often in different forums, is, that there is a theoretical possibility of the server chassis going down - which would in consequence take all the blades down. That is due to shared infrastructure. My reaction on this probability would be to have redundancy and by two chassis instead of one (very costly of course). Some people (including e.g. HP Vendors) try to convince us, that the chassis is very very unlikely to fail, due to many redundancies (redundant power supply, etc.). Another concern on my side is, that if something goes down, spare parts might be required - which is difficult in our location (Ethiopia). So I would ask to experienced administrators, that have managed blade server: What is your experience? Do they go down as a whole - and what is the sensible shared infrastructure, that might fail? That question could be extended to shared storage. Again I would say, that we need two storage units instead of only one - and again the vendors say, that this things are so rock solid, that no failure is expected. Well - I can hardly believe, that such a critical infrastructure can be very reliable without redundancy - but maybe you can tell me, whether you have successfull blade-based projects, that work without redundancy in its core parts (chassis, storage...) At the moment, we look at HP - as IBM looks much to expensive... thanks a lot best regards Christian

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  • Why Does DreamWeaver CS5 Discriminate between File Extensions, Even After Modding Mime Types!?

    - by Sam
    Hi folks, Even After I forced DreamWeaver CS5 to allow opening of .ast extensions as a MIME type of php5, which DreamWeaver now opens and colors correctly as described here, I still have trouble figuring out why it still discriminates between the two file extensions! Symptoms: External Files & Design View I have a file foo.php which php includes other files (e.g. the php-combined css.php and js.php). Now, when opening foo.php all functions work perfectly: the external (included) php files are all recognised correctly. However, when I change foo.php foo.ast, and open it again, It does not recognise the files extensions anymore in the top bar. Also, I lose the Design / Live View functionality.** When I change foo.ast to foo.php, all works again! Anyone any clues of why there remains a a difference between one and other extension? Note1: I have added the .ast extension to these four files, next to .php: 1 C:\Users\Sam\AppData\Local\VirtualStore\Program Files (x86)\Adobe\Adobe Dreamweaver CS5\configuration\DocumentTypes\MMDocumentTypes.xml 2 C:\Program Files (x86)\Adobe\Adobe Dreamweaver CS5\configuration\DocumentTypes\MMDocumentTypes.xml 3 C:\Users\Sam\AppData\Roaming\Adobe\Dreamweaver CS5\en_US\Configuration\Extensions.txt 4 C:\Program Files (x86)\Adobe\Adobe Dreamweaver CS5\configuration\Extensions.txt Note2: sometimes, even .php files do not want to show in design view or live view. Could this be caused by a corrupted installation?

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  • Hardware issue: computer plays beep sounds at startup, and then turns off

    - by Darkkurama
    Turns out that after moving, my computer got damaged somehow. I installed my computer 2 days ago. I didn't check the state of the hardware parts and turned the pc on recklessly, not realizing that the cpu fan was dettached from the cpu. After this I reattached the fan. The computer worked kind of faulty after that, because at the time of startup, it would play a long beep (different from the normal beep) and won't display anything. I tried restarting after this incident and it got fixed (don't know how, but it did), and I was even able to play some videogames for some hours (more than 5). This morning I tried to get this issue sorted out by checking again the cpu and in general, the connections, and for my surprise, at the time of turning it on again, the computer wouldn't boot at all. I reapplied some thermal paste to the cpu and fan, but got no results (I did this because the old paste was very badly distributted along the surface of both cpu and fan). Now every time I turn it on, the computer acts randomly: sometimes at startup, it plays a long continous beep and then turns off. one time it played a long continous beep and got to the windows password input screen, but then it turned off More frequently, I turn it on and after some seconds, it turns off without any sound. You can check this video I recorded, which features how the computer behaves most of the time Another one I tried troubleshoting it myself by disconnecting my graphic card, rams, HDD and even the cpu and its fan with no result. Computer specs: Intel Core 2 Quad Q6600 processor, Nvidia xfx gtx 260 black edition, 4 GB ram, 500 GB hard drive, Windows 7 64 bit

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  • KVM and JBoss Java Application Server

    - by Jason
    We have a large Xen deployment running on both RHEL and CentOS and have recently started looking at KVM since this is where it looks like the future of VM's are on Linux. We can load the server and get everything running without an issue. However when we load up a new one with JBoss (4.2 Community edition, Sun JDK 6) and load a large EAR the server goes a little crazy. The %sy will jump to 80-99% and just hang for large periods of time we see a similar jump in %us on the host machine. We though at first this might be I/O as it seems to happen at start of JBoss but then would "cool down" after everything got loaded. We did some tests by extracting some large tar.gz files and using jar -xvf on the ear but could not re-create. Then we starting thinking this might be some type of memory access issues. We loaded a c-program that would generate a lot of memory activity and sure enough we saw the spikes again. Not as high mind you but we did see it jump. We then wrote a small java program to do the same thing and sure enough we saw it jump again. Any thoughts on what might be causing this? Is this just the way KVM works? As a side note we do NOT see this behavior on any other setup. Xen, VMWare and/or native iron. The system does seem a bit slower than our Xen / VMware ones.

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  • Annoying trackpad freeze on MacBook [solved]

    - by Hafthor
    NOTE: Question marked answered because it was forced after being put up for bounty. Actual solution was to have Apple repair it. Trackpad usually works, but sometimes stops responding for around 5 seconds and then suddenly starts working again. Seems to happen when I switch between typing and moving + button-clicking and also when I do a lot of double-clicking. Tried turning off the "Ignore accidental trackpad input". Apple replaced the keyboard/mouse under warranty. Problem remains. Any ideas? Edit: White non-unibody Late-2008 13" MacBook - fully up-to-date OS. Doesn't seem to matter if it is plugged in or not. Edit: Updated to Snow Leopard - seems to have made it worse. Edit: Applying even a little pressure to the left palm rest creates this condition. Apple replaced the top case again and this time it seems to have fixed it. Although, it looks like they may have added a spacer on the left palm rest to "fix" it.

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  • Tracking down the cause of a web service fault running in IIS

    - by BG100
    I have built a web service in Visual Studio 2008, and deployed it on IIS 7 running on Windows Server 2008 R2. It has been extensively tested, handles all errors gracefully and logs any uncaught errors to a file using log4net. The system normally runs perfectly, but occasionally (2 or 3 times a day) a fault occurs and screws up the application which needs an iisreset to get it working again. When the fault occurs I get some random errors that are caught by my catch-all error log, such as: Value cannot be null. Could not convert from type 'System.Boolean' to type 'System.DateTime'. Sequence contains no elements These errors are raised on every request until I manually do an iisreset, but there is no sight of them when the system is running normally. The web service is a stateless request-response application. Nothing is stored in the session. It could be load related, but I doubt it as there are only around 30 or 40 requests per minute. This is proving very tricky to track down. I can't work out what is putting IIS into this bad state, and why it needs an iisreset to get it working again. Nothing is reported in the event log. Can anyone suggest how to enable more extensive logging that might catch this fault? Also, does anyone know what might be causing the problem?

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  • how to back up data from a machine that keeps hanging

    - by Amit Phatarphekar
    Hello - I have a storage server running opensolaris. But lately its been acting up - it hangs at random times due to some SCSI/ATA related error messages. I've tried to fix it without any progress, so I'm giving up now. The machine keeps hanging every 30 minutes or 1 hr ...sometimes after 4 hrs. Its very unpredictable. So I've decided to just reformat the storage server and start from scratch...maybe I'll just not use solaris and install something else, since the errors are related to solaris running on ATA HDD or something. Question - Before I reformat it, I want to back up some of the important data on it. Like it has a VM with 200 GB disk files, it has a whole bunch of ISOs stored on it etc etc. I'm using a simple scp to copy the files over to a different machine. My issue is that, because the machine hangs....sometimes my file copy is incomplete and I have to start all over again. Lets say I'm trying to copy a 200GB file which takes like 4 hrs....IF the machine hangs before the whole file i copied over...I have to recopy the file from scratch. Is there a solution to copy the files over such that if the machine hangs or network goes down..the copying can resume from where it left off? - like if 50 GB of a 200GB file was copied and machine hung....next time, it'll just continue to copy rest of the amount, instead of starting all over again. Thanks Amit

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  • Failing Windows Updates with Error Code 800719e4

    - by Kev
    On a number of Vista machines I have now come across the same error - when installing updates everything works fine, until it after it reboots and the rolls back during step 3. On all occasions (where a simple retry hasn't worked) the error code has been 800719e4. On my own laptop I have so far tried the following:- Installed the updates one by one manually - I started on the smallest and one by one have worked towards the largest one which has left me with "Security Update for Windows (KB2286198)" that refuses to install. Renamed all the files in "C:\Windows\Logs\CBS" to "xxx.old" where xxx was the original name with windows update turned off - no change Renamed all the folders in "C:\Windows\SoftwareDistribution" in the same manner - no change Attempted to install it manually "Windows6.0-KB2286198-x86.msu" - no change Tried to un-install IE8 - doesn't work, rolls back at the end (Installing the IE9 Beta when it launched was what alerted me to the issue on this laptop) Ran a "Fix It" thing from the Microsoft Website - no help (Can't find the link now). Tried to recover from the disk - but alas my laptop only has a recovery partition (and was unservice packed original). Ran with nothing running on startup, and only MS services - again no change. Google is being useless with a load of posts trying to get me to call a telephone number with letters in (presumably an American number) The error code appears to mean error log full but no one has any idea which log! The WinUpdate log does indicate the following is the error point though :- 2010-10-23 13:54:48:230 1240 738 Handler WARNING: Got extended error: "POQ Operation SetKeyValue OperationData \Registry\machine\Schema\wcm://Microsoft-Windows-shell32?version=6.0.6002.18287&language=neutral&processorArchitecture=x86&publicKeyToken=31bf3856ad364e35&versionScope=nonSxS&scope=allUsers\metadata\elements\HKEY_CLASSES_ROOT_lnkfile_shellex_DropHandler_defaultValue, @default, , ewAwADAAMAAyADEANAAwADEALQAwADAAMAAwAC0AMAAwADAAMAAtAEMAMAAwADAALQAwADAAMAAwADAAMAAwADAAMAAwADQANgB9AAAA" Has anyone any idea how to fix this once and for all - reinstalling laptop after laptop from scratch is mildly annoying at work where Office and Firefox are the only extras, but even more annoying at home - I don't fancy going through the palaver of reinstalling everything yet again.

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  • How to make network drives appear even if disconnected?

    - by Jake
    I have the same problem as many others: network and home drives set by group policy and AD are not connected on windows startup. The prime suspect is that the LAN or wireless does not connect until after user log in. I have already given up on that. Now, I just want the disconnected drives to continue to list in My Computer so that if the user goes in and double click the drive, it will connect again. However, on some machines the drive is completely missing from My Computer. If I right click My Computer Map Network Drive again, it does work. But it's very troublesome to do it all the time. And I don't want to use a script to map the drives because I don't want to appear to be using a hacky solution to the users. The drives listed as disconnected will look more like a "built-in feature", and gives users more confidence. How can I keep the disconnected drives in My Computer? I am using Windows 7 Professional and Win2k8.

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  • Unexplained cache RAM drops on Linux machine

    - by FunkyChicken
    I run a CentOS 5.7 64 machine with 24gb ram and running kernel 2.6.18-274.12.1.el5. This machine runs only Nginx, php-fpm and Xcache as extra applications. Since about 3 weeks my memory behavior on this machine has changed and I cannot explain why. There are no crons running which flush anything like this. There are also no large numbers of files being deleted/changed during these drops. The 'cached' memory gets dropped about every few hours, but it's never a set gap between flushes, this indicates to me that some bottleneck gets reached instead. It also always seems to be when total memory usages gets to about 18GB, but again, not always exactly 18GB. This is a graph of my memory usage: As you can see in the graph the 'buffers' always stay more or less the same, it is mainly the 'cache' that gets dropped. Running vmstat -m I have outputted the memory usage just before and just after a memory drop. The output is here: http://pastebin.com/diff.php?i=hJqZqztm 'old version' being before, 'new version' being after a drop. About 3 weeks ago my server crashed during a heavy DDOS attack, after I rebooted the machine this odd behavior started. I have checked a bunch of logs, restarted the machine again, and cannot find any indication what changed. During these 'cache' memory drops, my iNode usage drops at the same time. Does anyone have any idea what might be causing this behavior? Clearly my RAM isn't full, so I am curious why this could be happening.

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  • postfix smtp_fallback_relay for deferred messages to a single domain

    - by EdwardTeach
    I use Postfix to send messages to a mail server outside my organization which frequently rejects/defers my mail. My Postfix server sees that these messages are deferred and tries again, eventually getting through. Final delivery can take up to an hour, which makes my users unhappy. In comparison, mail from my Postfix server to other hosts works normally. I have now found out about a second, unofficial MX for this domain that does not reject/defer mail. This second MX does not appear when doing a DNS MX query for the domain. Therefore, for the problem domain I would like to use this second MX as a fallback. That is: whenever mail is deferred by the primary MX, try again on the unofficial second MX. I see that there is already a postfix configuration "smtp_fallback_relay". However the documentation seems to indicate that I can not restrict usage of the fallback to a single domain. The documentation also doesn't mention deferred message handling. So is there a way to configure a single-domain, deferred-retry fallback host in Postfix? For reference, I am including my postconf output (the host names and ip addresses are fake): alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases, hash:/etc/postfix/legacy_mailman, ldap:/etc/postfix/ldap-aliases.cf append_dot_mydomain = no biff = no config_directory = /etc/postfix default_destination_concurrency_limit = 2 inet_interfaces = all inet_protocols = all local_destination_concurrency_limit = 2 local_recipient_maps = $alias_maps mailbox_size_limit = 0 mydestination = myhost.my.network, localhost.my.network, localhost, my.network myhostname = myhost.my.network mynetworks = 127.0.0.0/8, [::ffff:127.0.0.0]/104, [::1]/128, 10.10.10.0/24 myorigin = my.network readme_directory = no recipient_delimiter = + relay_domains = $mydestination relayhost = smtp_fallback_relay = the.problem.host smtp_header_checks = smtpd_banner = $myhostname ESMTP $mail_name virtual_alias_maps = hash:/etc/postfix/virtual

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  • Port Forwarding failing only to Ubuntu servers from Draytek router

    - by Rufinus
    I know this is a kinda unusal question, but Draytek support (..which is very eager to solve the issue) seems to reach its limits. Scenario: Draytek Vigor Multiwan router with current firmware. Multiple WAN IP Aliases on one of the wan ports DMZ (or port forwarding doesnt matter) from wan ip alias to internal host currently i have two internal hosts: 192.168.0.51 (Ubuntu) 192.168.0.53 (Debian) both should be accessible from outside via one of the wan ip aliases. both are accessible with their internal ip's at all times (!) If the router gots restartet, both external ips are forwarding to its internal hosts. But after a few minutes up to 2 hours, the ubuntu host is no longer reachable via its external interface. The debian hosts on the other hand is reachable. In what does ubuntu differs from debian ? I know at least of one user with the exact same problem. see http://ubuntuforums.org/showthread.php?p=10994279 Any ideas ? TIA EDIT: via ping diagnostics directly on vigor, 192.168.0.53 is pingable, 192.168.0.51 is not. but both hosts are perfectly reachable from anywhere inside the network. if i restart ubuntu networking it works again for a short time.... i'm out of ideas.. EDIT 2: after further investigation, i noticed a ping from .51 to the network (or a host in the internet) is enough to make the port-forwarding working again. So i will add an Cronjob as a "keep-alive" ping. This will solve the problem, but the reason for this behaivor is still in the dark. Thanks to all commentors.

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  • Arch Linux drops me on my school network

    - by Kravlin
    I'm running a Lenovo X61 which i carry around my college for getting on the internet at various points in the day. The network has always been finicky but recently it's gotten worse. I'll connect using iwconfig, get an ip from dhcpcd and log in using vpnc to their system. Sometimes I'll stay connected for hours but most of the time within 30 seconds my network traffic will drop to zero and i'll be unable to do anything. My computer still belives it's connected, however to try again i need to put my wireless interface down, put it back up and try again. It's gotten so bad that i've got a window on my computer pinging yahoo or google constantly in order to know if i'm still able to get online. I know other people who have used Arch Linux that don't have the same problems as well as people who use Ubuntu who haven't had any problems either. It seems like my computer is a special case. Does anyone have any suggestions on how to fix it? dmesg doesn't show anything out of the ordinary going on and i don't know where else to look for errors or other things to try. Edit: this doesn't happen on my home network. It's a problem that only happens at school.

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  • Using my old PC as a web/file server?

    - by Garrett
    I have an old desktop computer that I've been trying to sell for AGES. I guess nobody is looking for computers because it was advertised at a dirt cheap price on craigslist, local papers, etc. Anyways, I was wondering if it would be worth it to set it up as a home file server, a web dev server (I have a web host for actual production use), and maybe host a few server applications (ex: ventrillo). The computer is actually an old Dell that I cannibalized after the motherboard being destroyed by lightning, so it has fairly new parts in it. The specs are: P4 3.4GHz w/ HT and Artic Cooling Freezer 7 3GB DDR2 533 RAM 80GB hdd (will upgrade the hard drive if it's even worth using as a server) basic dvd rom 430 Watt Thermaltake PSU (it might be important to note that it is only 60% efficiency) ATI Radeon x600 256MB Antec 300 case It's not a really beefy machine, I just can't see giving it away or putting it in the corner to just collect dust. I have Windows Server 2008 R2 Standard and I am confident in my skills in operating most Linux operating systems. I'd also be using it to tinker with when I learn new things in my server admin classes (I'm finishing my 2nd year in college at the moment so I'm still learning) Also, my house is quite old and the electrical wiring is pretty poor (it MIGHT be up to code, then again, where I live most people don't even know what regulations are or let alone know how to spell it...) Would it be safe to leave it running all day and is it going to run up my electric bill because of the PSU efficiency? I only have 5mbit cable internet, but I won't be running very bandwidth intense services on it so it should be ok. I should elaborate on why I am concerned about the power. The circuits should be fine, but I'm more concerned about fire hazard. What is the likelihood that the server could cause an electrical fire? Again, thank you all for the feedback!

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  • Expired password change through VPN failure

    - by Tim Alexander
    I am setting up some new accounts to be used by some contractors. they are going to connect via VPN to our network. My requirement is to set the password initially and then have them change it the first time they log in. As a result the "User must Change Password" box is checked. Loading up a laptop and testing has yielded poor results. When logging in I get a notification that the password has expired and a box to fill in, which I do. it then appears again so I dutifully fill in the password details again. I am then presented with a "Sending Password...." error box with Error:619 listed as the reason. Trying to reconnect then gives a 691 error that the password is bad. From the firewall, that is the actualy VPN server, I can see RAD_ACCESS_DENIED and from the DC running NPS (acting as a RADIUS server for the firewall with MS-CHAP-v2 enabled with the "User can change password after it has expired" checked) I cannot see a request to change the password. I can only see Event ID 4776, 4625 and 6273 (reason 16). I can log in with out the change password flag fine so I know logins are being authenticated. Really hoping someone might be able to assist in tracking down the lack of password change processin gon the DC.

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  • Clustering filesystem for small files

    - by viraptor
    Hi, I'm looking for a distributed filesystem which I could use for storing lots of small files (<1MB usually). What I want to get is: 2 servers which have the fs mounted themselves and mirror the data locking support (among reachable nodes) some kind of best-effort automatic resynchronisation after one node goes down and comes back again What I mean by the resync is that, I'm ok with both servers doing read/write operations even if they split-brain. I'm also ok if a local process obtains a lock if the other host is not reachable. From the resync I expect only a file-level consistent view after a while - that is - if file x is modified on both nodes during a split-brain, I don't really care which one is available after they join again, as long as it's full file, not one block coming from node1 and another block from node2. Is there a solution like that out there? I see that gluster has some problems with file locks (even in 3.1). I also noticed that OCFS2 will panic if both nodes split-brain. What other filesystem would allow me to do what I want?

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  • Maintaining "Portability" Between Linux and Windows 7

    - by lokheart
    I am using the following ways in my office's Windows 7 machine to maintain my "portabilibity" when disaster strikes and I need to switch computer while I have no luxury of time for reinstalling all my program to the new PC. a majority of programs I used are portable, mostly from portableapp.com, like notepad+, GIMP, even R, I extract them and store them in a folder in My document, in a structure similar to the default portableapp installation when they are installed to a thumbdrive only a few software that portable version is not available and I will install them as usual all of my working files are stored in a folder in My document I regularly backup them all using syncback, because this program can keep versioning of my backup, and the backup is stored in a portable drive. One day I need to switch my computer and the operation is relative simple for me: I just move the two folders mentioned above into the my document folder of the new PC, install those few "non-portable" program in it, and this is almost done, some minor hiccups can be solved by reinstalling the portableapp into the drive. Overall speaking it is a smooth process. I would like to maintain the same degree of "portability" in my home Linux desktop (Ubuntu or Mint, I'm still deciding), that is, if my Linux crash and I need to reinstall it again. All I need to do is the move the two folder back to the new Linux, and most of my work will be almost ready to be worked on again. But I don't know how to find a Linux-alternative of portableapps. Being a newer to Linux, can anyone tell me whether this is possible in Linux?

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  • Webapp in Jetty can't find properties file after running a couple days

    - by Cuga
    I have a webapp running in Jetty on Mac OS 10.6. After a few days of it running and without the server losing power or rebooting, it seems to stop working saying it can't find a properties file. This properties file is included inside the .war file deployed to the /webapps directory. If I restart Jetty as the superuser the web service works again just fine. Can anyone lend any advice to what's going on and how I can fix it? The error being shown when it isn't working is: Problem accessing /my-web-service. Reason: INTERNAL_SERVER_ERROR Caused by: java.lang.NullPointerException at com.company.service.Dao.readFromPropertiesFile(BwDao.java:35) at com.company.service.ServletHandler.doGet(ProxyClass.java:66) ... at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410) at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582) Here's where the properties files exist that it's trying to read from the .war file: And this is how the properties are being read from the classpath: Properties properties = new Properties(); properties.load(Thread.currentThread().getContextClassLoader().getResourceAsStream( "app.properties")); Again, this does work just fine if I have just restarted the server, but it seems to fail after running a few days.

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