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• Xen domU passwd file overwritten with console log output

  - by malfy

  I was setting up a Debian Xen domU and after booting it fine, I added basic configuration to /etc/network/interfaces and ran /etc/init.d/networking restart. This failed so I decided to reboot. After the reboot I also ran xm shutdown box. When dropped to a shell prompt it wouldn't let me login. Upon further inspection, I now have garbage in some critical files in /etc: root@box:/# tail +1 mnt/etc/{passwd-,shadow} tail: cannot open `+1' for reading: No such file or directory ==> mnt/etc/passwd- <== 0000000000100000 (reserved) Nov 23 02:02:39 box kernel: [ 0.000000] Xen: 0000000000100000 - 0000000004000000 (usable) Nov 23 02:02:39 box kernel: [ 0.000000] DMI not present or invalid. Nov 23 02:02:39 box kernel: [ 0.000000] last_pfn = 0x4000 max_arch_pfn = 0x1000000 Nov 23 02:02:39 box kernel: [ 0.000000] initial memory mapped : 0 - 033ff000 Nov 23 02:02:39 box kernel: [ 0.000000] init_memory_mapping: 0000000000000000-0000000004000000 Nov 23 02:02:39 box kernel: [ 0.000000] NX (Execute Disable) protection: active Nov 23 02:02:39 box kernel: [ 0.000000] 0000000000 - 0004000000 page 4k Nov 23 02:02:39 box kernel: [ 0.000000] kernel direct mapping tables up to 4000000 @ 7000-2c000 Nov 23 02:02:3 ==> mnt/etc/shadow <== 32 nr_cpumask_bits:32 nr_cpu_ids:1 nr_node_ids:1 Nov 23 02:02:39 box kernel: [ 0.000000] PERCPU: Embedded 15 pages/cpu @c15b0000 s37688 r0 d23752 u65536 Nov 23 02:02:39 box kernel: [ 0.000000] pcpu-alloc: s37688 r0 d23752 u65536 alloc=16*4096 Nov 23 02:02:39 box kernel: [ 0.000000] pcpu-alloc: [0] 0 Nov 23 02:02:39 box kernel: [ 0.000000] Xen: using vcpu_info placement Nov 23 02:02:39 box kernel: [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 16160 Nov 23 02:02:39 box kernel: [ 0.000000] Kernel command line: root=/dev/mapper/xen-guest_root ro quiet root=/dev/xvda1 ro Nov 23 02:02:39 box kernel: [ 0.000000] PID hash table entries: The garbage is also present in the passwd file and the group file (although I didn't paste that above since I have since ran debootstrap on the filesystem again). Does anyone have any insight into what happened and why?

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• simple apache2 reverse proxy setup not working

  - by Nick

  I know what proxy is (very high level), it's just I have never set up one, and it feels like I might be missing some big fat point here. My setup: client server (static IP), runs apache on port 80 proxy (has 2 network cards, one is on the clients network, the other one with a static IP on the server network), runs apache on port 80 I am trying to configure these three machines so that when client requests: http://proxy/machine1 It gets served server's pages at server root URL, i.e. http://server/ I can access client pages just fine. However, when I try accessing a page from the client machine, it simply gets redirected to server's IP address, which it clearly can't access since they are not on the same network: ... <meta http-equiv="REFRESH" content="0;url=http://server/machine1"></meta> <title>Redirect</title> ... My apache2 config is: LoadModule proxy_module /modules/mod_proxy.so LoadModule proxy_http_module /modules/mod_proxy_http.so ProxyRequests off <Proxy *> Order Allow,Deny Allow from all </Proxy> ProxyPass /machine1 http://server:80 <Location /machine1> ProxyPassReverse / </Location> What gives? Thanks!

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• Forwarding HTTP Request with Direct Server Return

  - by Daniel Crabtree

  I have servers spread across several data centers, each storing different files. I want users to be able to access the files on all servers through a single domain and have the individual servers return the files directly to the users. The following shows a simple example: 1) The user's browser requests http://www.example.com/files/file1.zip 2) Request goes to server A, based on the DNS A record for example.com. 3) Server A analyzes the request and works out that /files/file1.zip is stored on server B. 4) Server A forwards the request to server B. 5) Server B returns file1.zip directly to the user without going through server A. Note: steps 4 and 5 must be transparent to the user and cannot involve sending a redirect to the user as that would violate the requirement of a single domain. From my research, what I want to achieve is called "Direct Server Return" and it is a common setup for load balancing. It is also sometimes called a half reverse proxy. For step 4, it sounds like I need to do MAC Address Translation and then pass the request back onto the network and for servers outside the network of server A tunneling will be required. For step 5, I simply need to configure server B, as per the real servers in a load balancing setup. Namely, server B should have server A's IP address on the loopback interface and it should not answer any ARP requests for that IP address. My problem is how to actually achieve step 4? I have found plenty of hardware and software that can do this for simple load balancing at layer 4, but these solutions fall short and cannot handle the kind of custom routing I require. It seems like I will need to roll my own solution. Ideally, I would like to do the routing / forwarding at the web server level, i.e. in PHP or C# / ASP.net. However, I am open to doing it at a lower level such as Apache or IIS, or at an even lower level, i.e. a custom proxy service in front of everything. Thanks.

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• Server nearly unusable when doing disk writes

  - by Wikser

  My question closely relates to my last question here on serverfault. I was copying about 5GB from a 10 year old desktop computer to the server. The copy was done in Windows Explorer. In this situation I would assume the server to be bored by the dataflow. But as usual with this server, it really slowed down. At least I could work with the remote session, even there was some serious latency. The copy took its time (20min?). In this time I went to a colleague and he tried to log in in the same server via remote desktop (for some other reason). It took about a minute to get to the login screen, a minute to open the control panel, a minute to open the performance monitor, ... Icons were loading maybe one per second. We saw the following (from memory): CPU: 2% Avg. Queue Length: 50 Pages/sec: 115 (?) There was no other considerable activity on the server. The server seldom serves some ASP.NET pages, which became also very slow in this time. The relevant configuration is as follows: Windows 2003 SEAGATE ST3500631NS (7200 rpm, 500 GB) LSI MegaRAID based RAID 5 4 disks, 1 hot spare Write Through No read-ahead Direct Cache Mode Harddisk-Cache-Mode: off Is this normal behaviour for such a configuration? What measurements could give further clues? Is it reasonable to reduce the priority of such copy I/O and favour other processes like the remote desktop? How would you do that? Many thanks!

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• How to set only specific nginx server block into maintenance mode programmatically

  - by Ville Mattila

  I am looking for a solution to automate one of our application's deployment process. In the beginning of deployment, I would like to programmatically set the specified server into maintenance mode and finally after the deployment has been completed, remove the maintenance mode flag from the nginx server. By maintenance mode, I mean that nginx should response with HTTP Response Code 503 to all the requests (with possible custom page). I know how to set the server block to respond with 503 code (see http://www.cyberciti.biz/faq/custom-nginx-maintenance-page-with-http503/) but the question is about how to do this programmatically and most efficiently. Two options have came to my mind: Option 1: At the beginning of the deployment process, write a maintenance file into document root and conditionally check an existence of the maintenance file in nginx server config: server { if (-f $document_root/in_maintenance_mode) { return 503; } } This method contains certain overhead as the file existence is checked for each request. Is it possible to check the file existence only when loading the nginx config? Option 2: Deployment script replaces the whole nginx server configuration file with a maintenance version and swaps it back in the end of the deployment. If this method is used, I am concerned about possible other automation processes like puppet that may be override the maintenance configuration file.

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• nginx error page and internal directives not working as expected

  - by Romain

  I'd like to setup my nginx server to return a specific error page on HTTP 50x status codes, and I'd like this page to be unavailable by a direct request from users (e.g., http//mysite/internalerror). For that, I'm using nginx's internal directive, but I must be missing something, as when I put that directive on my /internalerror location, nginx returns a custom 404 error (which isn't even my own 404 error page) when a page crashes. So, to summarize, here's what seems to happen: GET /Home nginx passes the query to Python I'm simulating an application bug to get the 502 error code nginx tries to return /InternalError from its error_page rule because of the internal rule, it finally fails back to a custom 404 error code <-- why? the documentation says error_page directives are not concerned by internal: http://wiki.nginx.org/HttpCoreModule#internal Here's an extract from nginx.conf with a few comments to point things out: error_page 404 /NotFound; error_page 500 502 503 504 =500 /InternalError; # HTTP 500 Error page declaration location / { try_files /Maintenance.html $uri @pythonbackend; } location @pythonbackend { include uwsgi_params; uwsgi_pass unix:///tmp/uwsgi.sock; } location ~* \.(py|pyc)$ { # This internal location works OK and returns my own 404 error page internal; } location /__Maintenance.html { # This one also works fine internal; } location ~* /internalerror { # This one doesn't work and returns nginx's 404 error page when I trigger an error somewhere on my site internal; } Thanks very much for your help!!

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• django : nginx : jquery css not being served

  - by PlanetUnknown

  I'm using apache+mod_wsgi for django. And all css/js/images are served through nginx. For some odd, reason when others/friends/colleagues try accessing the site, jquery/css is not getting loaded for them, hence the page looks jumbled up. My html files use code like this - <link rel="stylesheet" type="text/css" href="http://x.x.x.x:8000/css/custom.css"/> <script type="text/javascript" src="http://1x.x.x.x:8000/js/custom.js"></script> My nginx configuration in sites-available is like this - server { listen 8000; server_name localhost; access_log /var/log/nginx/aa8000.access.log; error_log /var/log/nginx/aa8000.error.log; location / { index index.html index.htm; } location /static/ { autoindex on; root /opt/aa/webroot/; } } There is a directory /opt/aa/webroot/static/ which have corresponding css & js directories. The odd thing is that the pages show fine when I access them. I have cleared my cache/etc, but the page loads fine for me, from various browsers. Also, I don't see any 404 any error in the nginx log files. Actually the logs for nginx are not getting refreshed at all. I restarted the nginx server using root, is that incorrect ? There is a user www-data defined in the nginx configuration file. Any pointers would be great.

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• nginx and proxy_hide_header

  - by giskard

  When I curl for a URL I get this answer back: > < HTTP/1.1 200 OK < Server: nginx/0.7.65 < Date: Thu, 04 Mar 2010 12:18:27 GMT < Content-Type: application/json < Connection: close < Expires: Thu, 04 Mar 2010 12:18:27 UTC < http.context.path: /1/ < jersey.response: com.sun.jersey.spi.container.ContainerResponse@17646d60 < http.custom.headers: {Content-Type=text/plain} < http.request.path: /2/messages/latest.json < http.status: 200 < Transfer-Encoding: chunked I want to remove < http.context.path: /1/ < jersey.response: com.sun.jersey.spi.container.ContainerResponse@17646d60 < http.custom.headers: {Content-Type=text/plain} < http.request.path: /2/messages/latest.json < http.status: 200 So I used the proxy_hide_header directive in this way: location / { if ($arg_id) { proxy_pass http..authorized; break; } proxy_pass http..anonymous; proxy_hide_header http.context.path; proxy_hide_header jersey.response; proxy_hide_header http.request.path; proxy_hide_header http.status ; } But it doesn't work. any clues?

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• APC (php accelerator). What situations should I use this?

  - by matthewsteiner

  So I've just got a small vps. I've installed apc, which sped up normal pages by 20% - 30%. I was reading about memcached and came to the conclusion that I can use apc for the same thing (caching objects from database results) if I'm not distributing over other servers. Since I only have the one server, apc will be just as beneficial for caching things in memory. I'm still in development mode, and I'm sure it's hard to tell what would be best for production mode. The thing is, my database queries seem pretty fast (between .0008 and .02). None of my pages are way database intensive. Would it be beneficial to me to cache results in memory? If the database is running well right now, is it going to be having a hard time later? Also, is connecting to the database at all something that costs speed (even if I cache most of my queries, every page has to have a little database interaction for session data). So, basically if I have a limited ram, and one machine, will using apc rather than just letting the database be uncached be much faster? Ideas?

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• How do I make wallpaper fit both monitors in dual monitor setup?

  - by Ben

  I am deploying some custom corporate wallpaper as part of a Windows 7 rollout. Some people will be using dual monitors, and the additional monitors may be either 4:3 or widescreen. I want to use the same wallpaper on both screens (i.e. 2 copies of the same wallpaper, not stretched across both.) If I set the background to "stretch", it uses the aspect ratio of the primary monitor to stretch the wallpaper on both monitors. So, for example, if I have a dual monitor setup using a 4:3 TFT as primary and my (widescreen) laptop LCD as secondary - the image shows on the laptop LCD in 4:3, with a black stripe down either side. I've only noticed this as an issue with my "custom" wallpaper. Both the default MS wallpaper and the built in Lenovo wallpaper don't seem to have this issue. Is this by using "trickery" such as using an image larger than the largest resolution you will have and centering it? (i.e. so you crop out part of the image.) Or can this be done "properly"? I don't want to use 3rd party software to do this, but would happily do a bit of Powershell scripting if this would solve the issue. Thanks in advance, Ben

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• Unable to record using Jmeter: [help me very urgent]

  - by krish

  Hi, I am trying to record a http web page using Jmeter 2.3.3 version.I has setup the JMeter proxy and tried, but did n't work. I have followed the below steps. 1. Launch jmeter 2.3.3, added thred group to test plan 2. Under Workbench-add-non-test elements- added HTTP proxy server. proxy server setting are port:9090, target:use recording controller, grouping:donot group samplers, Type:HTTp request and checked the boxes of all under http sampler settings 3.Saved the settings 4. Now in browser(IE 7.0 or firefox 3.0.16), under connection settings, setup the manual proxy settings as local host and port as 9090(no auto detect settings nothing, only manual proxy). Setting saved 5.Now in the jmeter, started the http proxy server. 6. Open a browser and hit the webpage needs to be tested. The page is not opened. In fact because of the changes made in browsers, no pages are opened. Whenever i try hitting a page, the pages are recorded in the Jmeter. but without the page open, how can i test. I looking for an immediate answer and my work is blocked. Immediate answer would be appreciated.

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• esxi 5 monitoring

  - by user134880

  I'm new to esxi/vmware world. Have few question about monitoring esxi host. Now I'm using trial versian esxi 5.1 I can see performance charts in vShpere client. Cool. But I want to export this raw data (raw - I mean cvs,txt or some format which I can parse later) to other server to be able to parse this data later and create custom charts. (please do not advise to try vCenter, I need custom charts etc.) I could run esxtop in batch mode and use this data... But... How does vShpere client performance charts work? Where client takes data for charts? So if I will use esxtop batch mode it will add extra load to server. Is it possible to use same source as vSphere client use for charts? There is /var/lib/vmware/hostd/stats/hostAgentStats-20.stats file. Its looks like it is binary format. As I understood it is exactly data which I need?!?! Any ideas how to parse it? Thanks! PS: maybe some one know where to find, if there is one, info about processes running on esxi host?

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• Apache HTTPd FollowSymLinks path permission

  - by apast

  Hi, I'm configuring my development environment with a basic Apache HTTPd configuration. But, to avoid a often problem, I want to map my test URL to my development folder. I'm using Ubuntu. My development path is located under the following example path: /home/myusername/myworkspace/hptargetpath/src/pages Considering the following symbolic link mapping: #ls -l /opt/share/www/mydevelopmentrootpath: lrwxrwxrwx 1 root root 77 2011-02-13 18:53 /opt/share/www/mydevelopmentrootpath -> /home/myusername/myworkspace/hptargetpath/src/pages With this folder mapping, I configured Apache HTTPd with the following configuration: <VirtualHost *:*> ServerName local.server.com ServerAdmin [email protected] DirectoryIndex index.html DocumentRoot /opt/share/www/mydevelopmentrootpath <Directory /opt/share/www/mydevelopmentrootpath/ > Options +Indexes Options +FollowSymLinks AllowOverride None Order allow,deny Allow from all </Directory> </VirtualHost> But, I'm receiving a 403 Forbidden error when I want to access index.html under the address http://local.server.com/index.html. 403 Forbidden You don't have permission to access /index.html on this server. On httpd debug log, I checked the following message: [Sun Feb 13 19:34:47 2011] [error] [client 127.0.1.1] Symbolic link not allowed or link target not accessible: /opt/share/www/mydevelopmentrootpath I'm thinking that this problem is been generated by some path permission. It's not a direct permission to directory, but some intermediate directory in the path. There's a directive on httpd core Options: SymLinksIfOwnerMatch The server will only follow symbolic links for which the target file or directory is owned by the same user id as the link. But, I tested it without effects. Somebody may help me? I think that it's a trivial configuration on development environment. Best regards, And Past

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• Tridion 2011 SP1 Core Service - expose to live server within PROD env

  - by Neil

  We have a requirement to allow our users to submit information about their "projects" - a small piece of text and single image they upload. Ultimately we'll have a listing page of user contributed projects that others can comment on and rate. We've decided to user Tridion's UGC for rating & comments site-wide for this first phase which has got me thinking - UGC is tied to Tridion published pages & components, if we want UGC on our user-submitted projects, they'll have to be created within Tridion as components themselves, not be sat in some custom db table? Is this where the Core Service could come in? My understanding is that the CD Web Service is for retrieval, not for interacting with the Content Manager. Is it OK (!) architecturally to expose the Core Service only to our live application servers so our backend .NET code can create "project components" that can be then be published by editors allowing them to be commented on? Everything sounds pretty neat and tidy apart from the "exposing Core Service to live servers" bit. Without this though I'd have to write a custom way to "transfer" it back over to the Content Manager - maybe like Audience Manager Sync works? Anyone done this before?

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• Nginx + php-fpm - recv() error

  - by Ilya Biryukov

  I get the follow error in the nginx log [error] 17734#0: *6643 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: [cut], server: [cut], request: "GET /venues HTTP/1.1", upstream: "fastcgi://127.0.0.1:9000", host: "[cut]" I have a dedicated box with 8 gb ram, quad core chip. Good server. Nginx, php-fpm & mysql all latest versions running under ubuntu 10.04 I only get this when I stress test the server with siege. If I increase the number of concurrent connections to 100, I can get up to 20% of all requests to fail. Furthermore, I don't get this on pages that have no mysql queries. And only a few failures on pages with moderate number of queries. Bit, I'm not sure if that's got to do anything with it. I have a feeling this is something to do with php. But I can't figure it out. Any suggestions of where to even start looking? Update: and the php error log is silent. No record of anything going wrong

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• Unable to record using Jmeter

  - by krish

  Hi, I am trying to record a http web page using Jmeter 2.3.3 version.I has setup the JMeter proxy and tried, but did n't work. I have followed the below steps. Launch jmeter 2.3.3, added thred group to test plan Under Workbench-add-non-test elements- added HTTP proxy server. proxy server setting are port:9090, target:use recording controller, grouping:donot group samplers, Type:HTTp request and checked the boxes of all under http sampler settings Saved the settings Now in browser(IE 7.0 or firefox 3.0.16), under connection settings, setup the manual proxy settings as local host and port as 9090(no auto detect settings nothing, only manual proxy). Setting saved Now in the jmeter, started the http proxy server. Open a browser and hit the webpage needs to be tested. The page is not opened. In fact because of the changes made in browsers, no pages are opened. Whenever i try hitting a page, the pages are recorded in the Jmeter. but without the page open, how can i test. I looking for an immediate answer and my work is blocked. Immediate answer would be appreciated.

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• Content not being compressed even though I'm using zlib in php.ini

  - by Tola Odejayi

  I've edited my php.ini file so that it has these two entries: zlib.output_compression = On zlib.output_compression_level = 4 However, after restarting apache, when I request php pages, the headers returned in the response indicate that my server is still NOT serving compressed pages (here are selected headers as viewed using Chrome's Network feature): Cache-Control:no-cache, must-revalidate, max-age=0 Connection:Keep-Alive Content-Type:text/html; charset=UTF-8 Date:Mon, 17 Sep 2012 23:46:13 GMT Expires:Wed, 11 Jan 1984 05:00:00 GMT Last-Modified:Mon, 17 Sep 2012 23:46:13 GMT Pragma:no-cache Proxy-Connection:Keep-Alive Server:Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.17 Transfer-Encoding:chunked Via:1.1 XXX-PRXY-07 X-Powered-By:PHP/5.2.17 What might I be doing wrong? Is there any other setting that I need to change? EDIT Here is another set of headers returned to another computer: Cache-Control:no-cache, must-revalidate, max-age=0 Connection:close Content-Type:text/html; charset=UTF-8 Date:Thu, 20 Sep 2012 09:45:26 GMT Expires:Wed, 11 Jan 1984 05:00:00 GMT Last-Modified:Thu, 20 Sep 2012 09:45:26 GMT Pragma:no-cache Server:Apache/2.2.21 (Unix) mod_ssl/2.2.21 OpenSSL/0.9.8e-fips-rhel5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 PHP/5.2.17 Transfer-Encoding:chunked Vary:Cookie X-Powered-By:PHP/5.2.17

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• How do you make Google's interface always be in your chosen language?

  - by Michael Wolf

  Google's interface and search results don't always appear in my preferred language, English. I'm located in Mexico City and, although I generally have no problem with Spanish, I would prefer search results in English most of the time. (The exception is when I'm using search terms in Spanish.) I'd also prefer the interface to be in English, but that's far less important to me than search results. Google looks at your IP to decide where you're coming from and thus what language to present results in. So, when I type www.google.com into the URL bar, it redirects me to www.google.com.mx. Is there a way to force Google to use one language all the time? Here are some things I've done and tried: 0) I have a Google account, and I've configured it such that it should know that English is my preferred language. I don't often explicitly log out of Google, so generally Google knows I'm me and my preferences when I access its services. 1) I've configured my browser to ask for pages in English. Very few sites support this feature at all; Google isn't one of them. 2) From www.google.com.mx, I can click on "Google.com in English". This works until, I think, I close the browser. 2a) From www.google.com.mx, I can go into account configuration, which is English. From then on, everything's in English. 3) I can append &hl=en (Human Language = English) to the end of the URLs of result pages. 2, 2a, and 3 all "work", but they're all mildly annoying. I'd rather avoid them if I could. (At the risk of stating the obvious, English and Spanish are the languages I'm dealing with, but I imagine that, say, a francophone using Google from Korea would run into basically the same issue.)

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• HTTPS/HTTP redirects via .htaccess

  - by Winston

  I have a somehow complicated problem I am trying to solve. I've used the following .htaccess directive to enable some sort of Pretty URLs, and that worked fine. For example, http://myurl.com/shop would be redirected to http://myurl.com/index.php/shop, and that was well working (note that stuff such as myurl.com/css/mycss.css) does not get redirected: RewriteEngine on RewriteCond ${REQUEST_URI} !^(index\.php$) RewriteCond %{SCRIPT_FILENAME} !-f RewriteCond %{SCRIPT_FILENAME} !-d RewriteRule ^/?(.*)$ index.php/$1 [L] But now, as I have introduced SSL to my webpage, I want the following behaviour: I basically want the above behaviour for all pages except admin.php and login.php. Requests to those two pages should be redirected to the HTTPS part, whereas all other requests should be processed as specified above. I have come up with the following .htaccess, but it does not work. h*tps://myurl.com/shop does not get redirected to h*tp://myurl.com/index.php/shop, and h*tp://myurl.com/admin.php does not get redirected to h*tps://myurl.com/admin.php. RewriteEngine on RewriteCond %{HTTPS} on RewriteCond %{REQUEST_URI} !^(admin\.php$|login\.php$) RewriteRule ^(.*)$ http://%{HTTP_HOST}/${REQUEST_URI} [R=301,L] RewriteCond %{HTTPS} off RewriteCond %{REQUEST_URI} ^(admin\.php$|login\.php$) RewriteRule ^(.*)$ https://myurl.com/%{REQUEST_URI} [R=301,L] RewriteCond %{REQUEST_URI} !^(index\.php$) RewriteCond %{SCRIPT_FILENAME} !-f RewriteCond %{SCRIPT_FILENAME} !-d RewriteRule ^/?(.*)$ index.php/$1 [L] I know it has something to do with rules overwriting each other, but I am not sure since my knowledge of Apache is quite limited. How could I fix this apparently not that difficult problem, and how could I make my .htaccess more compact and elegant? Help is very much appreciated, thank you!

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• Orphaned SQL Recordsets/Connections with IIS

  - by Damian

  I have an IIS 6 site running on Windows 2003 Server x86 with MS SQL2005 Enterprise edition running ASP Classic (no choice). The site runs very fast with about 8000 page views per hour. All of my SQL tables are indexed and I have used the profiler to check my queries, the slowest of which is only about 10-15ms. I have autoshrink disabled, autogrow is set to 250mb, database is 2gb with 800mb of free space. My problem is that every now and then the site will slow to a crawl for no reason. Pages that just have a simple 'connect to databse and increment a hit counter' work ok, but more SQL intensive pages that normally execute in about 60ms take 25,000ms to run. This happens for about 30 seconds and then goes away. I was having an issue with orphan recordsets and connections due to the way I was releasing them. I have fixed this up and the issue is much better, but I am still getting them. Is there a way with permon, etc. to track when SQL Server or Windows closes these Orphan connections? At least if I can monitor the issue I will know if I am making progress or if I am even looking at the right things. Is there anything else I might be missing? Thank you!

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• How can i export a folder of Firefox Bookmarks into a text file

  - by Memor-X

  I want to clean up my bookmark folders by getting rid of duplicated/links. i have created a program which will import 2 text files which contains a URL like this File 1: http://www.google/com http://anime.stackexchange.com/ https://www.fanfiction.net/guidelines/ https://www.fanfiction.net/anime/Magical-Girl-Lyrical-Nanoha/?&srt=1&g1=2&lan=1&r=103&s=2 File 2: http://scifi.stackexchange.com/ http://scifi.stackexchange.com/questions/56142/why-didnt-dumbledore-just-hunt-voldemort-down http://anime.stackexchange.com/ http://scifi.stackexchange.com/questions/5650/how-can-the-doctor-be-poisoned the program compares the 2 lists and creates a single master list with duplicate URLs removed. Now i have a few Backup bookmark folders in Firefox which on occasion i'll bookmark all tabs into a new folder with the date of the backup before i close off tabs or do reset my PC. each folder can have between 1000-2000 bookmarks, sometimes there are a bunch of pages which keep getting bookmarked, ie, i have ~50 pages on the Magical Girl Lyrical Nanoha Wiki on different spells, character and terminology which i commonly look back on. I'd like to know how i can export a bookmark folder so i have a list of URLs similar to what i use in my program

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• Improving performance by using an additional static file server

  - by Max

  Hello there, I´m planning for a large website that includes many static assets (js, css, images and thumbnails) in the generated pages. That website will use TYPO3 as CMS (is is a customer requirement). I guess I could seriously improve performance / page load times by using a two server setup. One server where the main application (PHP) runs and another one where the static files sit being served by a trimmed down version of apache or something like lighthttpd. Including e. g. js or css files from the file server is of course no big deal. Just use an absolute url http://static.example.com/js/main.js and be done with it. But: that website will have pages with MANY thumbnails of e. g. product images on it. So I see two problems when the main application tries to create a thumbnail of some image: the original image like products/some.jpg is uploaded on the static file server and therefore not on the same server as the PHP application which tries to create the thumbnail. TYPO3 writes created thumbnails to a temp directory which is expected to be on the same server. Therefore, hundreds of thumbnails will be written and served from that temp directory which is on the same server as the main application - the static file server is in that case basically useless, all thumbnails will be requested from the server of the main application. So, my question is: how to overcome this shortcomings? Is it possible to "symlink" some directories to another server? So, for example, if PHP tries to open the original products image for thumbnail creation with imagecreate("products/some.jpg") the products folder actually "points" to the products folder on the static image server? I know something like this can be done with .htaccess but is it possible on file system level?

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• Faking a Linux environment without chroot

  - by Pascal

  For a university project I want to test a C++11 program on a 32-core machine. Unfortunately the machine has Ubuntu 12.04 with GCC 4.6 installed (we need GCC 4.7 because of some C++11 threading features). In such an environment I would normally run a chroot with a custom linux (say a debootstrap with Ubuntu 12.10). Since we don't get root access on the machine we can't use chroot. So far I have prepared a run-time environment using debootstrap for our code, I compiled it in the debootstrap environemnt. Then copied it onto the server (using rsync). In order to run our C++ code I set the LD_LIBRARY_PATH to export LD_LIBRARY_PATH=~/debootstrap/usr/lib/:~/debootstrap/lib64/:~/debootstrap/usr/lib/x86_64-linux-gnu/:~/debootstrap/lib/x86_64-linux-gnu/:$LD_LIBRARY_PATH and so far our code seems to run. I'm however stuck with our python code. It doesn't seem to be sufficient to set the paths manually. export PYTHONPATH=~/debootstrap/usr/lib/python2.7/dist-packages:~/debootstrap/usr/lib/python2.7:~/debootstrap/usr/lib/python2.7/plat-linux2:~/debootstrap/usr/lib/python2.7/lib-tk:~/debootstrap/usr/lib/python2.7/lib-dynload:~/debootstrap/usr/local/lib/python2.7/dist-packages:~/debootstrap/usr/lib/pymodules/python2.7:~/debootstrap/usr/lib/python2.7/dist-packages/PIL:~/debootstrap/usr/lib/python2.7/dist-packages/gtk-2.0:~/debootstrap/usr/lib/python2.7 Executing our script results in ImportError: No module named _path Is there an easier way to accomplish a "fake"-chroot than just overriding and creating environment variables? Note I need python since we created a custom C++-Python module in order to run our tests. Maybe I should create two questions from this.

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• Looking to get a small server – need web, PHP, PostgreSQL.

  - by Javawag

  Hi all! I'm looking to get a cheap (low end) server to serve web pages (xHTML/PHP), but I also need to be able to set up PostGreSQL on the system too. Ideally the server would have low power consumption, run Linux (I prefer Mac OS X but a Mac Mini, although the size I'm looking for, is too much money!) and be around £100 (~$160US). EDIT: Just to make it clearer, I'm looking to purchase the server hardware myself – but I want something about Mac Mini sized. I don't want to pay for hosting! Also, quick question – if it's to serve web pages from my home (standard ISP connection, no static IP!), what do I need in place to get this working. I'm guessing I would sign up with some service like no-ip, and register a domain to point to my no-ip address (then install the no-ip software on the server to update that with the current IP). I know the idea of running a server behind a normal ISP connection isn't very elegant, but I'd prefer to have the server where I can see it then pay over the odds for a hosting service where I have little to no control over what happens. Also, I could write my own server software for apps/etc to connect to as well. Anyways I'm rambling! What do you guys think?! Javawag

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• Moved servers running Windows Server 2003

  - by Charles

  Our company has two locations and each location has a Windows Server 2003 machine as the DC and several servers, running on two different sub-nets. We are consolidating the locations. I changed the IP address on one of the web servers prior to moving to the main location. I didn't change the IP address on either the DC or the other web servers prior to moving to the main location. Now, only the web server whose IP was changed is able to serve pages. The other web servers are not able to serve pages, cannot be pinged, or be accessed via RDP. Since we don't need the second DC, it has been powered down. When I tried to ping it, the previous IP address was received. My colleague changed the IP address in the DC's DNS, but when I ping it, a timeout error is received. I know that I should have read a lot more before doing this. What can I do to fix it? Thanks, in advance, for your help! Update MarkM, thanks for the info on demoting a DC. That's one of the things I want to do after everything is working. Is there a good, clear article you recommend? Rusty, there are no DMZs involved at this point. I need to set up a DMZ, but that's another project.

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