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• Truncated content with Apache on Vagrant VM

  - by Nev Stokes

  I'm using Vagrant to run a CentOS VM in order to try and achieve local development parity with our live servers. I've symlinked /var/www/html with the /vagrant shared directory and am forwarding port 80 for viewing at http://localhost:4567. I'm developing using SublimeText 2 on OS X Mountain Lion. Once I figured that iptables was tripping me up, all was well and good. Until I noticed something strange. I have a sample HTML page consisting of several paragraphs of lorem copy. I can view this fine in a browser on OS X. But when I make an edit, for example removing a paragraph, and refresh the content is truncated with the paragraph I deleted still visible. When I cat the files on the server I can see the changes I made but these aren't even reflected when I curl localhost. I strongly suspect that it's a problem with my Apache settings — with which I didn't really tinker — as the issue doesn't arise when I stop Apache and run sudo python -m SimpleHTTPServer 80 in the directory to view pages instead. What gives?

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• vyatta Server Reboots by itself

  - by Fernando

  I have an issue regarding some hardware, maybe you can help me. First, I set up a Supermicro Superserver SYS-5016I-NTF with a Intel Xeon X3470 and 4 GB of Ram with a Hotlava Card Tambora 64G4 with Intel Chipset 82599EB and 4x10G SPF+ ports. Installed Vyatta community edition 6.3. I used it as router making BGP connections with 2 operators. No load at all, temp ranges normal. But the issue is that it reboots by itself in a ramdom way. Not very often, once every few days. But it is unacceptable for production purposes. So I try to test on different hardware, and installed Vyatta community edition 6.3 on a Dell PowerEdge 2950, with Xeon(R) E5345 @ 2.33GHz and 4 GB of Ram. Same Vyatta configuration as Supermicro Server. With same hotlava Card model ( I bought two of them ) Well I have reboots with this equipment as well. Same frecuency as above. I have checked syslog no strange logs until boot process starts to be logged. So it seems server reboot suddenly. I have installed latest driver for the chipset of the Hotlava card. Servers are placed in a datacenter with UPS So finally two things in common in both servers: Hotlava Card. Someone with issues with this card, or the chipset?? Could be it this card?? Vyatta 6.3 community edition. I don't thing is the problem. Is a regular Debian with packages to glue together different services. Or maybe is something I am missing. Andy ideas, suggestions?? Thank you very much... Fernando

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• Unable to access network resources through VPN

  - by fbueckert

  I'm currently attempting to connect one of our computers in the office to a client VPN. My development machine is running Windows 7, and can connect and see resources just fine. The problem computer is running Windows XP. They're both within the same network. Using the same credentials at both computers, the VPN connection (using the built in Windows network connections) works just fine. So far, so good. An IP address is assigned, and comparing both machines shows they're still in the same subnet. The problem is that the XP machine cannot see ANY of the computers in the client network. I tried a tracert to a target machine on the Windows 7 box, and the first item that comes up is the .0 address. Pinging it gives responses. Trying it on the Windows XP machine, however, comes up with just timeouts. Trying to trace to www.google.com allows the address to resolve (probably part of the cached resolutions), but results in just timeouts. I double-checked to make sure that the Windows firewall was not on, and trying to open the settings brings up a notification that the firewall service wasn't running, which leads me to believe that it's definitely not on. From my best guess, I've managed to connect the XP machine to a black hole of some sort. There's obviously something strange going on, but I'm not sure where I should be looking.

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• OpenVPN IPV6 Tunnel Radvd

  - by Arenstar

  Hello.. I have an interesting question regarding ipv6 + openvpn.. My Version is OpenVPN 2.1.1 i have been given a native /64 ipv6 network ( for this example 2001:acb:132:acb::/64 ) The plan was/is, route this block through openvpn and into an office ( for testing purposes ) Soo to explain.. I have a Centos Box as the first linux "router" in a datacenter & a Ubuntu box as the second linux "router" in the office I have created a simple point-to-point tunnel using tun ( based off ipv4 address to start the tunnel ) I have assigned to Centos /sbin/ip addr add fed1::1/128 dev eth0 /sbin/ip addr add fed2::2/128 dev tun0 /sbin/ip route add 2001:acb:132:acb::/64 dev tun0 ## ipv6 Block down the tunnel /sbin/ip route add ::/0 dev eth0 ## Default out to Gateway I have assigned to Ubuntu /sbin/ip addr add fed1::3/128 dev tun0 /sbin/ip addr add fed1::4/128 dev eth0 /sbin/ip route add 2001:acb:132:acb::/64 dev eth0 ## ipv6 Block down to eth0 /sbin/ip route add ::/0 dev tun0 ## Default up the tunnel I have also included on both servers.. sysctl -w net.inet6.ip6.forwarding=1 Looks Good... right??? Wrong.. :( I am not able to ping fed1::1 from fed1::4 (Ubuntu) (can ping :4,:3,:2) However, i can ping fed1::1 fed1::2 from :3 ?????? ( very strange ) I am able to access the internet from any ipv6 interface on the Centos Box but clearly not from the Ubuntu box.. Further, i will eventually run radvd on the Ubuntu box eth0, and autoconf the network with ipv6 address's Anyone with some advice / tips to help me out.. ??? Cheers

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• Uploading file > 1 MB on Django admin gives 400 Bad Request response.

  - by ayaz

  I have a small Django (1.2.x) project deployed on Apache (2.x) via mod_wsgi (2.x). In the admin, if I upload a file < 1MB, I can get it through; however, for a file, say, 1.2MB in size, I get a 400 response from the server with "Error 400" in the body only. I am wondering why this is happening. As far as I can see, there is no LimitRequestBody set in Apache configuration. I have tried uploading with several browsers including: Firefox, Chrome, and Safari. In the log file for Apache, there is apparently no entry for requests that gave the 400 error response. This is strange. I should point out that the scenario where this is happening is thus: The project in question is deployed on two identical Apache servers (completely identical setup) that are behind a load balancer. On my development setup, of course, the problem does not surface. Any help with this will be very much appreciated.

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• Keyboard issue when using kitty+puttycyg but not when using putty or cygwin alone

  - by kamaradclimber

  I would like to use a unique way to use console on my windows setup. Previously I used putty for remote access to linux servers and cygwin to have unix-like tools on windows. Then I discovered kitty which is a patched putty and have added the puttycyg patch. It provides the same way to connect to remote and local console. However, there is a strange behavior using vim when connected to the local console (using the puttycyg patch) : keys display A/B/C/D and replace the current character by these letter. In insert mode it does replace the caracter, in normal mode, no modification is made to the document even if the caracter is displayed as replaced. For instance, when I type : fixed bug with product deleted I get : fixed bbug wiwith prprodudueleteted I have read a lot of questions about this type of issue 3, 4 and googled it but there is no answer that work for me. The issue is present only for the setup kitty+puttycyg patch : cygwin alone works perfectly (and putty alone works also for access to linux servers). Any help would be appreciated !

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• Visual Studio 2010 Beta 2, built-in font smoothing

  - by L. Shaydariv

  I've just installed Visual Studio 2010 Beta 2 onto my Windows XP to evaluate it and check whether it meets my preferences the way it did before. Okay, I've temporary defeated an urgent bug with a strange workaround (I could not open any file from the Solution Explorer), and it left bad memories to me. But however, it's okay. The first thing I've seen just opening the code editor was ClearType font rendering. Wow, so unexpectedly. I must note that I do not use standard Windows rendering techniques, but I still prefer GDI++, a font renderer developed by Japanese developers. (GDI++ allows to render the fonts in Mac/Win-Safari style over entire Windows.) Personally for me, GDI++ reaches the great font-rendering results allowing me to use the Dejavu Sans Mono font with really nice smoothing in Visual Studio 2008 (VS 2005 too, though VS 2005 crashes in this case). But GDI++ cannot affect Visual Studio 2010 Beta 2 text editor - it uses ClearType (right?), and it does not care about the system font smoothing settings. It could be an editor based on WPF, right? So as far as I can see, I can't use GDI++ anymore because it uses Windows GDI(+) but no WPF? So I've got several questions: Is it possible to disable VS 2010 b2 built-in ClearType or override it with another font smoother? Is it possible to install a Safari-like font renderer for Visual Studio 2010 [betas]? Thanks a lot.

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• No apparent reason for high load average

  - by Oz.

  We have several web servers running on Amazon (ec2) c1.xlarge, over Amazon AMI. The servers are duplicates of each other, running the exact same hardware and software. Each server spec is: 7 GB of memory 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High API name: c1.xlarge A couple of weeks ago we have run a yum upgrade on one of the servers. Starting on this upgrade the upgraded server started showing a high load average. Needless to say, we did not update the other servers and we can not do so until we understand the reason for this behavior. The strange thing is that when we compare the servers using top or iostat, we can not find the reason for the high load. Note that we have moved traffic from the "problematic" server to the others, which have made the "problematic" server less crowded in terms of requests, and still his load is higher. Do you have any idea what could it be, or where else can we check? Many thanks for the help! Oz. # # proper server # w command # 00:42:26 up 2 days, 19:54, 2 users, load average: 0.41, 0.48, 0.49 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT pts/1 82.80.137.29 00:28 14:05 0.01s 0.01s -bash pts/2 82.80.137.29 00:38 0.00s 0.02s 0.00s w # # proper server # iostat command # Linux 3.2.12-3.2.4.amzn1.x86_64 _x86_64_ (8 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 9.03 0.02 4.26 0.17 0.13 86.39 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvdap1 1.63 1.50 55.00 367236 13444008 xvdfp1 4.41 45.93 70.48 11227226 17228552 xvdfp2 2.61 2.01 59.81 491890 14620104 xvdfp3 8.16 14.47 94.23 3536522 23034376 xvdfp4 0.98 0.79 45.86 192818 11209784 # # problematic server # w command # 00:43:26 up 2 days, 21:52, 2 users, load average: 1.35, 1.10, 1.17 USER TTY FROM LOGIN@ IDLE JCPU PCPU WHAT pts/0 82.80.137.29 00:28 15:04 0.02s 0.02s -bash pts/1 82.80.137.29 00:38 0.00s 0.05s 0.00s w # # problematic server # iostat command # Linux 3.2.20-1.29.6.amzn1.x86_64 _x86_64_ (8 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 7.97 0.04 3.43 0.19 0.07 88.30 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn xvdap1 2.10 1.49 76.54 374660 19253592 xvdfp1 5.64 40.98 85.92 10308946 21612112 xvdfp2 3.97 4.32 93.18 1087090 23439488 xvdfp3 10.87 30.30 115.14 7622474 28961720 xvdfp4 1.12 0.28 65.54 71034 16487112

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• Adding a GET parameter to URL causes 404 error

  - by Adrian Grigore

  I'm trying to install the syntaxhighlightter evolved plugin to my wordpress blog. I've uploaded and activated the plugin, but it did not work. I've looked into the page source code and found out that the plugin style is loaded from the following URL: http://devermind.com/wp-content/plugins/syntaxhighlighter/syntaxhighlighter/styles/shCore.css?ver=2.0.320 This causes a 404 error (page not found). The strange thing though is that when I remove the GET parameters, the CSS loads ok: http://devermind.com/wp-content/plugins/syntaxhighlighter/syntaxhighlighter/styles/shCore.css What could be causing this problem and how can I fix this? Unfortunately I don't know how to make wordpress drop the GET parameters when loading the stylesheet. EDIT: As I just found out, this happens only in Firefox (3.0.11). IE loads both URLs above just fine. Not that this would be of any help though, so any suggestions would be appreciated. SECOND EDIT: I tried this on my laptop and it works fine with Firefox 3.08. So this really seems to be a browser problem after all.

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• Nginx + PHP-FPM Timeouts, almost zero load consumption?

  - by javipas

  I've got a server running on a Linode with Ubuntu 10.04 LTS, Nginx 0.7.65, MySQL 5.1.41 and PHP 5.3.2 with PHP-FPM. There is a WordPress blog on it, updated to WordPress 3.2.1 recently. I have made no changes to the server (except updating WordPress) and while it was running fine, a couple of days ago I started having downtimes. I tried to solve the problem, and checking the error_log I saw many timeouts and messages that seemed to be related to timeouts. The server is currently logging this kind of errors: 2011/07/14 10:37:35 [warn] 2539#0: *104 an upstream response is buffered to a temporary file /var/lib/nginx/fastcgi/2/00/0000000002 while reading upstream, client: 217.12.16.51, server: www.mydomain.com, request: "GET /page/2/ HTTP/1.0", upstream: "fastcgi://127.0.0.1:9000", host: "www.mydomain.com", referrer: "http://www.mydomain.com/" 2011/07/14 10:40:24 [error] 2539#0: *231 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 46.24.245.181, server: www.mydomain.com, request: "GET / HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "www.mydomain.com", referrer: "http://www.google.es/search?sourceid=chrome&ie=UTF-8&q=mydomain" and even saw this previous serverfault discussion with a possible solution: to edit /etc/php/etc/php-fpm.conf and change request_terminate_timeout=30s instead of ;request_terminate_timeout= 0 The server worked for some hours, and then broke again. I edited the file again to leave it as it was, and restarted again php-fpm (service php-fpm restart) but no luck: the server worked for a few minutes and back to the problem over and over. The strange thing is, although the services are running, htop shows there is no CPU load (see image) and I really don't know how to solve the problem. The config files are on pastebin The php-fpm.conf file is here The /etc/nginx/nginx.conf is here The /etc/nginx/sites-available/www.mydomain.com is here Please help :(

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• Using Toshiba 22EL833 as PC display with GTX8800

  - by Oleg V. Volkov

  I had another Toshiba TV - 19SL738 - connected to this same PC and video card (GTX 8800) through DVI<-HDMI (DVI on PC side, HDMI on TV) before, that was working perfectly at it's native resolution 1360x768. Some time ago I had to change to 22EL833 and immediately faced problem with Windows 7 control panel and NVIDIA control panel both reporting native resolution for new TV as 1080i, 1920x1280, despite TV documentation saying that it have same 1360x768 as previous one. Practical tests confirmed that true native resolution is indeed 1360x768, because plugging in through DVI<-VGA and setting custom resolution through NVIDIA panel shown clear colors and crisp image, while setting anything different with either DVI<-VGA or DVI<-HDMI produced horribly distorted or squished images, with almost unreadable slim lines (as in letters, for example). Now, my problem is that there's no drivers for this TV and I'm unable to get good image while connecting it through DVI<-HDMI directly. The best I've achieved is editing EDID/driver manually, to persuade system that native resolution should be 1360x768, and while image became mostly clear, colors turned to some strange washed out effect, with pools of pure yellow, cyan and magenta there and there filling place of other colors. Gradients also became noticeably stripped as well. Somehow it looks like dithering gone bad and makes me suspect that image is still down/upscaled several times internally somewhere along the line. How can I connect this TV to DVI output of my video card to get best possible clear image, correct colors and correct native resolution?

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• How can I recover a Fedora 12 installation that is showing signs of disk errors?

  - by Bob Cross

  I am currently overseas (i.e., very far from my normal library of tools) and my primary machine that would normally act as the data server in the performance test that we're trying to run is failing to boot to Fedora 12 properly. This is a machine that, as of yesterday, was booting fine. However, this morning, very strange portions of the boot process were complaining with messages such as "unexpected 0x0 in rpcbind" and "bad file descriptor" (I don't have the error in front of me - scavenged a windows installation to get onto serverfault). Eventually, the boot hung for a long time at the NFS service and then brought up what looked like the KDE login screen but neither the mouse nor keyboard functioned. In olden days, I would try to get to a point where I could manage to run fsck and pray that the bad sectors would come back into alignment just long enough for me to scrape the critical data off of the machine. However, now that we live in the future, it seems like our options in situations like this should be a little more varied. Is there a way to recover a Fedora 12 installation with bad disk sectors that won't boot properly? For completeness, I am comfortable working with bootable recovery distros-on-CD and such but I don't know which one is likely to work best with modern Fedora. In the absence of guidance, I'm frantically torrenting the Fedora 12 Live CD and DVD, hoping to try rescue mode before tomorrow morning.

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• linux keeps disconnecting from wireless network

  - by Matteo Ceccarello

  I'm running Arch Linux on an Acer laptop and my wirless connection doesn't stay up. After a while it disconnects, and when I try to reconnect I get stuck with a "Waiting for authorization" message. I have to retry several times before getting the connection stay up for few minutes. This happens with both networkmanager and wicd. The strange thing is that the iMac that sits next to the laptop connects fine, and when I use my laptop within the university wireless network it works normally. How can I solve this problem? EDIT: I've tried to connect manually following the steps iwlist wlan0 scan wpa_supplicant -i wlan0 -c /etc/wpa_supplicant.conf dhcpcd wlan0 and it works, I can ping google. However, looking to wpa supplicant output I see that it keeps connecting and disconnecting. I'm using WPA2, and this seems to be a problem in authentication. EDIT 2: as pointed out in the answers I forgot to mention my hardware/software specifications: kernel: Linux 3.0-ARCH wireless card: # lspci | grep -i net 07:00.0 Network controller: Intel Corporation WiFi Link 5100 module used # lsmod | grep -i 80211 mac80211 216021 1 iwlagn I use a Netgear DGN1000 modem/router My dmseg output is shown here http://pastebin.com/8Tf7iage

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• Apache stops responding to http requests -- https continues to work

  - by Apropos

  Okay. Very strange problem that I'm having here. I just recently updated to Apache 2.4.2 from 2.2.17, mostly to try to get name-based SSL VirtualHosts working (although they should have been working on 2.2.17). Server is Win2008 R2 (so x64 by definition) running with PHP 5.4.3 and MySQL 5.1.40 (outdated, I know). When I launch the server, it initially works fine. Responds to all requests, VirtualHosts all in order. However, after an uncertain amount of time (appears to only take a few minutes for the most part, but sometimes takes hours), it stops responding to regular HTTP requests (on any VirtualHost). HTTPS continues to work. No errors in the log, and nothing in the access logs when I attempt to connect. I'm having a hard time finding the source of this error given its intermittent nature. When removing all SSL-based VirtualHosts, it seemingly increased stability (still responding to HTTP requests twelve hours later). This could be mere coincidence, though. Entirety of SSL VirtualHost is as follows, should there happen to be a problem with it. <VirtualHost *:443> DocumentRoot "C:\Server\www\virtualhosts\mysite.net" ErrorLog logs/ssl.mysite.net-error_log CustomLog logs/ssl.mysite.net-access_log common env=!dontlog SSLEngine on SSLProtocol all -SSLv2 SSLCipherSuite ALL:!ADH:!EXPORT:!SSLv2:RC4+RSA:+HIGH:+MEDIUM SSLCertificateFile C:/Server/bin/apache/apache2.4.2/conf/ssl/server.crt SSLCertificateKeyFile C:/Server/bin/apache/apache2.4.2/conf/ssl/server.key SSLCertificateChainFile C:/Server/bin/apache/Apache2.4.2/conf/ssl/sub.class1.server.ca.pem SSLCACertificateFile C:/Server/bin/apache/Apache2.4.2/conf/ssl/ca.pem </VirtualHost> Any ideas what I'm missing?

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• Use Apache authentication + authorization to control access to Subversion subdirectories

  - by Stefan Lasiewski

  I have a single SVN repo at /var/svn/ with a few subdirectories. Staff must be able to access the top-level directory and all subdirectories within it, but I want to restrict access to subdirectories using alternate htpasswd files. This works for our Staff. <Location /> DAV svn SVNParentPath /var/svn AuthType Basic AuthBasicProvider ldap # mod_authnz_ldap AuthzLDAPAuthoritative off AuthLDAPURL "ldap.example.org:636/ou=people,ou=Unit,ou=Host,o=ldapsvc,dc=example,dc=org?uid?sub?(objectClass=PosixAccount)" AuthLDAPGroupAttribute memberUid AuthLDAPGroupAttributeIsDN off Require ldap-group cn=staff,ou=PosixGroup,ou=Unit,ou=Host,o=ldapsvc,dc=example,dc=org </Location> Now, I am trying to restrict access to a subdirectory with a separate htpasswd file, like this: <Location /customerA> DAV svn SVNParentPath /var/svn # mod_authn_file AuthType Basic AuthBasicProvider file AuthUserFile /usr/local/etc/apache22/htpasswd.customerA Require user customerA </Location> I can use Firefox and curl to browse to this folder fine: curl https://svn.example.org/customerA/ --user customerA:password But I cannot use check out this SVN repository: $ svn co https://svn.example.org/customerA/ svn: Repository moved permanently to 'https://svn.example.org/customerA/'; please relocate And on the server logs, I get this strange error: # httpd-access.log 192.168.19.13 - - [03/May/2010:16:40:00 -0700] "OPTIONS /customerA HTTP/1.1" 401 401 192.168.19.13 - customerA [03/May/2010:16:40:00 -0700] "OPTIONS /customerA HTTP/1.1" 301 244 # httpd-error.log [Mon May 03 16:40:00 2010] [error] [client 192.168.19.13] Could not fetch resource information. [301, #0] [Mon May 03 16:40:00 2010] [error] [client 192.168.19.13] Requests for a collection must have a trailing slash on the URI. [301, #0] My question: Can I restrict access to Subversion subdirectories using Apache access controls? DocumentRoot is commented out, so it's not clear that the FAQ at http://subversion.apache.org/faq.html#http-301-error applies.

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• Random Excel bug when referencing a different sheet

  - by Matteo

  I am getting a very strange error anytime I try to use a formula pointing to a cell in a different sheet from the active one (even as simple as "=Sheet2!A1"). This started happening all of a sudden, and without any change in the system - only I seem to having started having the problem since I started using a workbook from another colleague with the same issue. I'm running Excel 2003 SP3 on XP. With little variants, whenever I reference a cell in a different sheet, from any formula, and then press Enter, the formula gets written on a different cell from the one I was editing it in, and throws a REF error. Example: I start editing in cell A1 of Sheet 1, type "=", then move the cursor to cell B2 of Sheet 2 (that may contain any value), and press Enter. At this stage you would expect cell A1 in Sheet 1 to contain formula "=Sheet2!B2" and display the value in that cell. Instead what happens is that the cell remains empty, and another random cell of Sheet 1 gets populated with something like "=Sheet2!#REF!" throwing an error. Interestingly, the error does not happen when I manually type the cell reference in (ie. without moving the cursor to the second sheet). Hope this is making any sense - any ideas are welcome! Thanks.

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• Facing application redirection issue on nginx+tomcat

  - by Sunny Thakur

  I am facing a strange issue on application which is deployed on tomcat and nginx is using in front of tomcat to access the application from browser. The issue is, i deployed the application on tomcat and now setup the virtual host on nginx under conf.d directory [File i created is virtual.conf] and below is the content i am using for the same. server { listen 81; server_name domain.com; error_log /var/log/nginx/domain-admin-error.log; location / { proxy_pass http://localhost:100; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } Now the issue is this when i am using rewrite ^(.*) http://$server_name$1 permanent; in server section and access the URL then this redirects to https://domain.com and i am able to log in to app and able to access the links also [I am not using ssl redirection in this host file and i don't know why this is happening] Now when i removed this from server section then i am able to access the application from :81 and able to logged into the application but when i click on any link in app this redirect me to the login page. I am not getting any logs in application logs as well as tomcat logs. Please help on this if this is a redirection issue of nginx. Thanks, Sunny

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• Loss of network connectivity when playing video on Optoma HD180 projector

  - by Jeff Fohl

  Hi Folks - New to Super User, so I hope this question fits in with the guidelines. Very strange problem I am having, and I am at a loss as to how to continue troubleshooting this one. The basic problem is that when I attempt to watch streamed video on a particular display device (an Optoma HD180 projector), my network connectivity drops like a stone to barely measurable levels. This is my setup: I have a Dell H2C 730x running Windows 7 64bit. This particular computer has two ATI Radeon HD 4800 video cards. I have two Samsung 22" monitors connected to one card, and an Optoma HD180 digital projector connected to the other card via an HDMI cable. My internet connection is normally a reliable 6Mbps. The problem I am having occurs when I stream video (or even just browse the web) on the Optoma Projector. When I do this, my internet connection drops to practically zero (just a few kilobits per second). When I move the browser away from the projector, and over to one of my Samsung monitors, the internet connection comes right back. Note that the Optoma projector is on and enabled as a third monitor all this time. I can move the mouse around on the projector without triggering the problem. I tried pinging my router when I was playing a movie on one of the monitors, and I get a 1 millisecond response. However, when I have the movie playing on the Optoma projecter, pinging the router gives me response times in the hundreds of milliseconds, or times out completely. So, it clearly is something local to my machine - and not some sort of throttling occurring down the line. I would think that it is possibly something to do with the HDMI driver conflicting somehow with my network driver (which is a USB-based wireless connection). This one has me really stumped. Anyone have any ideas?

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• No clue for high load average on top

  - by Oz.

  We have several machines on Amazon (ec2) of the type c1.xlarge with 16 cpus, running the Amazon AMI. Details on the machine: 7 GB of memory 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High API name: c1.xlarge One out of the several machines is showing a high load average, since we have run the last yum upgrade a couple of weeks a go. We did not yet update the other machines, and everything looks normal on them. The strange thing is that the top command not showing any hint for the cause of the load. CPUs are 4.8%us, 1.1%sy, 0.0%ni, 94.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st(see below). Mem is about 1.5GB free. Any idea what could it be, or where else can we check? Many thanks for the help. # # top # top - 07:57:42 up 4:18, 1 user, load average: 1.36, 1.45, 1.47 Tasks: 131 total, 1 running, 130 sleeping, 0 stopped, 0 zombie Cpu(s): 4.8%us, 1.1%sy, 0.0%ni, 94.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 7120092k total, 5644920k used, 1475172k free, 532888k buffers Swap: 0k total, 0k used, 0k free, 3463936k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1557 mysql 20 0 1829m 374m 6448 S 14.3 5.4 11:15.09 mysqld 6655 apache 20 0 416m 49m 3744 S 9.3 0.7 0:04.85 httpd 27683 apache 20 0 421m 54m 3708 S 9.0 0.8 0:00.99 httpd 6682 apache 20 0 424m 57m 3788 S 8.3 0.8 0:03.81 httpd 16816 apache 20 0 419m 51m 3760 S 4.3 0.7 0:04.09 httpd 22182 apache 20 0 417m 50m 3756 S 1.7 0.7 0:06.34 httpd 219 root 20 0 0 0 0 S 0.3 0.0 0:00.34 kworker/7:1 699 root 20 0 0 0 0 S 0.3 0.0 0:00.40 kworker/3:1 1 root 20 0 19376 1508 1212 S 0.0 0.0 0:00.29 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:00.71 ksoftirqd/0

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• Why is my connection slow?

  - by Jay R.

  I have a Dell Precision T5400 with a Broadcom 1Gb onboard NIC. For some strange reason, when I access machines on our local network, the best I can get is around 125KB/s download speed. My laptop that has a 10/100Mb NIC onboard usually gets around 300KB/s or better from the same network resource. Both machines are plugged into the same 1Gb switch which connects to our local network wall jack at 100Mb half duplex. There is also a printer plugged into the same switch at 100Mb full. The resource I'm using for the test is a 30MB zip file copied from a jetty webserver that is running as part of a cruisecontrol installation. The cruisecontrol installation is running WindowsXP with full real-time antivirus and Altiris patch management and inventory running. That stuff on its own is eating some of the download speed. I've seen the laptop reach into the multiple MB/s download speed before, but the desktop never seems to get past 125KB/s to 130KB/s. In WindowsXP, before I upgraded the driver in the desktop, it was that slow. In Fedora, it is still slow even though it appears to be using the same driver version as the upgraded Windows driver. The upgraded Windows driver is faster, but still not nearly as fast as the laptop. What gives? Any insight to improve the situation would be appreciated. Could it be that the BroadCom board just isn't that good, or the driver in linux is just not as good as the Windows one?

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• SSH Private Key Not Working in Some Directories

  - by uesp

  I have a strange issue where SSH won't properly connect with a private-key if the key file is in certain directories. I've setup the keys on a set of servers and the following command ssh -i /root/privatekey [email protected] works fine and I login to the given host without getting prompted by a password, but this command: ssh -i /etc/keyfiles/privatekey [email protected] gives me a password prompt. I've narrowed it down that this behavior occurs in only some sub-directories of /etc/. For example /etc/httpd1/ gives me a password prompt but /etc/httpd/ does not. What I've checked so far: All private key files used are identical (copied from the original file). The private key file and directories used have identical permissions. No relevant error messages in the server/client logs. No interesting debug messages from ssh -v (it just seems to skip the key file). It happens with connecting to different hosts. After more testing it is not the actual directory name. For example: mkdir /etc/test cp /root/privatekey /etc/test ssh -i /etc/test/privatekey [email protected] # Results in password prompt cp /root/privatekey /etc/httpd # Existing directory ls -ald test httpd # drwxr-xr-x 4 root root 4096 Mar 5 18:25 httpd # drwxr-xr-x 2 root root 4096 Mar 5 18:43 test ssh -i /etc/httpd/privatekey [email protected] # Results in *no* prompt rm -r test cp -R /etc/httpd /etc/test ssh -i /etc/test/privatekey [email protected] # Results in *no* prompt` I'm sure its just something simple I've overlooked but I'm at a loss.

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• Anti Virus Service does not run - Windows XP SP3 32bit Home

  - by Stefan Fassel

  I have a somewhat strange problem here. I am trying to run Anti Virus Software on my Windows XP Home 32bit System. After a serious crash I had to fall back to an outdated copy of my initial installation and had Windows install 5 years of updates. So far so good. After Intalling a new Anti Virus Software (Bitdefender 2012) everything seemed to be fine, initial scanning went fine and configuration was working. But after restarting the System the Virus Scanner was unable to start up again. Even the Configuration console of the AV Software did not start. I tried scanning the System for malware, but nothing was found. Then I tried a different AV Software (MS Security Essentials), but in the end it did fail to start too. I have tried to start the Service manually, but I seem to be missing the privilege to do so. I am logged in as a Non-"Administrator" User with Admin privileges (Not much choices there on a XP Home System). I cannot switch to Administrator account outside the protected mode. When running Windows in protected mode I am unable to start the AV Software because it does not run in protected mode. I am a bit at loss now...

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• IP Phone over VPN - one way calls unless default route?

  - by dannymcc

  I have come across a strange problem with our VPN and BCM 50 (Nortel/Avaya) phone system. As you can tell by my other questions I have been doing some work on setting a VPN up from one location to another and it's all working well. With one exception. We have an IP phone that is connected at the remote location, straight to a router which has a VPN tunnel to our main practice. The phone works mostly, but every few calls it turns into a one way call. As in, the caller (from the remote phone) can't hear the receiver- but the receiver can hear the caller. This is fixed by setting the VPN tunnel to be the default route for all traffic. The problem with fixing it that way is that all traffic then goes through the tunnel which slows internet access etc. down considerably. The router is set to send the following over the VPN: 192.168.1.0/24 192.168.2.0/24 192.168.4.0/24 The IP of the remote location is: 192.168.3.0/24 The remote router (where the phone is) is a Draytek 2830n, and the local router (at the main practice) is a Draytek 2820. We are using an IPSec tunnel with AES encryption <- as a result of a previous answer pointing to the incompatibility in the hardware encryption. Any advice would be appreciated!

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• Guest can't access host windows network share

  - by Asteroza

  HI folks, I've recently run into a strange problem after upgrading to VMware player 3. Certain virtual machines (currently an XP and a VIsta VM) seem to have lost the ability to access the host (XP) network shared folders (SMB). Both VM machines are bridged networking, firewall is up. Host firewall is up. Host and guests use DHCP. All OS are workgroup connected. The Vista VM I am not completely sure, but the XP VM did have access to the host's network shared folders after the player upgrade. Then today it wouldn't work, network path can't be found. Now here's the wierd part. The host's network shared folders can be accessed properly by other PC's on the network (and as far as I know, no settings have been changed). The host is pingable from the guests, and name resolution works. The guests can access network shares on other PC's in the network, and access the internet. My Network Places shows the host PC, but double clicking on it takes a long time before it finally times out with an error. Doing a wireshark packet capture, the guest is sending out the protocol negotiation, and the host is sending a response, but after that the guest behaves like it didn't receive anything and is doing TCP retransmissions. Anybody have any idea what could be wrong? Yes I know I can drag and drop files or setup the special VMware shared folders, but I want to access the host just like any other network accessible shared folder. It just seems really odd when any other computer works, just not between the guest and host.

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• SQL Error (1064) when importing data from SQL file

  - by mejpark

  I have a MySQL database, which was originally set up with the default latin1 character set and latin1_swedish_ci collation. I was using the database like this for sometime, until I noticed strange characters on my production web site, which is powered by a database exported from my development machine. At this point, I changed the default character set of the database and tables to utf8 and the collation to utf8_unicode_ci, converted the latin1 data inside each table to utf8 (using the 'convert data' option) and exported the database as a single SQL file using HeidiSQL. When the resulting SQL file is opened in Notepad++, several characters are rendered incorrectly. For example, en dashes (-) are displayed as – and e with accent (é) are displayed as é. I changed the encoding of the file from ANSI to UTF-8 (using the encoding menu option in Notepad++) and the offending characters are rendered correctly. I saved the new utf8-encoded SQL file and attempted to import the contents into the MySQL database on my production server. The import process fails with following error: /* SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '?# -------------------------------------------------------- # Host: ' at line 1 */ /* Error with snippets directory: The specified path was not found */ The head of the SQL file: # -------------------------------------------------------- # Host: 127.0.0.1 # Server version: 5.1.33-community # Server OS: Win32 # HeidiSQL version: 6.0.0.3773 # Date/time: 2011-04-20 09:48:36 # -------------------------------------------------------- It chokes on the first line of the file, which is commented out. Why is this happening? I didn't have a problem loading data from SQL files until I changed the character set and collation of the database. I came up with an ugly workaround to this problem by performing following steps: Export database as single SQL file using HeidiSQL Open resulting file in Notepad++ and convert from ANSI to UTF-8 encoding Create new empty file in Notepad++, paste in UTF-8 and save file normally What am I missing here?

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