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  • Load balanced proxies to avoid an API request limit

    - by ClickClickClick
    There is a certain API out there which limits the number of requests per day per IP. My plan is to create a bunch of EC2 instances with elastic IPs to sidestep the limitation. I'm familiar with EC2 and am just interested in the configuration of the proxies and a software load balancer. I think I want to run a simple TCP Proxy on each instance and a software load balancer on the machine I will be requesting from. Something that allows the following to return a response from a different IP (round robin, availability, doesn't really matter..) eg. curl http://www.bbc.co.uk -x http://myproxyloadbalancer:port Could anyone recommend a combination of software or even a link to an article that details a pleasing way to pull it off? (My client won't be curl but is proxy aware.. I'll be making the requests from a Ruby script..)

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  • PPTP VPN Server issue : server = centOS & client = windows 7

    - by jmassic
    I have a CentOS server configured as a PPTP VPN Server. The client is a Windows 7 with "Use default gateway on remote network" in advanced TCP/IPv4 properties enable. He can connect to CentOS without any problem and can access to: The Box of his ISP (http://192.168.1.254/) The CentOS server The website which is hosted by the server (through http://) But he canNOT access any other web service (google.com or 74.125.230.224) I am a beginner with web servers so I do not know what can cause this problem. Note 0 : The Windows 7 user must be able to access the whole internet through the CentOS PPTP proxy. Note 1 : With "Use default gateway on remote network" in advanced TCP/IPv4 UNCHECKED it is the same problem Note 2 : With "Use default gateway on remote network" in advanced TCP/IPv4 UNCHECKED AND "disable class based route addition" CHECKED the Win 7 can access google but with the ISP IP (no use of the VPN...) See Screenshot Note 3 : I have made a echo 1 > /proc/sys/net/ipv4/ip_forward and a iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

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  • How to make your apache application accessible within network

    - by guest
    I have a Windows XP machine where I have installed WAMP and made a PHP based web application. I can access the web application from within this machine by using the browser and pointing to: http://localhost/myApp/ --- and the page loads fine. Now I want this site (http://localhost/myApp) to be accessible to all machines within the network (and may be later, to the general public as well). I am quite new to this, how do I make my site accessible to all machines within the network and to the general public in the internet? I tried modifying the httpd.conf file in Apache (WAMP) by changing Listen 80 to Listen 10.10.10.10:80 (where I replaced 10.10.10.10 with the actual IP of this windows xp machine). I also tried "Put Online" feature in WAMP. None seem to work though. How do I make it accessible?

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  • ip recognition is different

    - by Cougar
    some months ago i bought a dedicated server from usa (http://www.dacentec.com/) datacenter. my ips are look like this : 162.248.243.blo blo blo when i check my ip in this site : http://whatismyipaddress.com/ it shows me : ISP: Dacentec Services: None Detected Country: United States why Services: None Detected and what did they do with this ip block? also when i open some sites like google, yahoo, etc they show me india or china as country. what is the problem about these ips and why i don't have a stable location for them?

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  • ModRewrite Domain

    - by Mike Knoop
    I've done a little research into ModRewrite rules and conditions but have not been able to find a satisfactory set of rules/conds which achieve the effect I'm looking for. Essentially, I have a directory on domain A (http://www.domaina.com/dir/) which I would like to redirect to a different directory on domain B (http://www.domainb.com/diff_dir/). Note that I only want to apply the rewrite rule if the user is attempting to access /dir/ on domaina. If they are accessing a different directory or root I do not want to rewrite the URL. Thank you!

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  • Non-blocking service to receive messages on port via UDP

    - by stUrb
    I want to build a service on my Linux VPS which listens to a certain UDP port and does something with the (text)message which is captured. This processing consists of appending the message to a locally stored txt-file and send it as http, with a post variable to another server. I've looked into Nginx but as far is can see this server can only be bound to receive http packets. Although it is asynchronous. What is the best way to achieve this listening-service on linux? And which has the capabilities to do the above mentioned processing?

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  • Windows 7 Extend C Volume to Unallocated Space

    - by user327777
    a while back I installed Ubuntu and then later uninstalled it by I think deleting the partitions and recovering the windows 7 boot loader. I am not that experienced with partitioning yet. As you can see here there are two partitions that are now unallocated. The 9gb one is a recovery or something that came with the computer. How can I extend my C partition to use both of those? I do not want to have that much storage just wasted sitting there. Currently when I right click on C and hit extend the wizard pops up but there is no available space to extend. http://i.imgur.com/VxEkdyR.png http://i.imgur.com/DdFZWX9.png Thanks everyone!

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  • Is it possible to redirect/bounce TCP traffic to an external destination, based on rules?

    - by xfx
    I'm not even sure if this is possible... Also, please forgive my ignorance on the subject. What I'm looking for is for "something" that would allow me to redirect all TCP traffic arriving to host A to host B, but based on some rules. Say host A (the intermediary) receives a request (say a simple HTTP request) from a host with domain X. In that case, it lets it pass through and it's handled by host A itself. Now, let's suppose that host A receives another HTTP request from a host with domain Y, but this time, due to some customizable rules, host A redirects all the traffic to host B, and host B is able to handle it as if came directly from domain Y. And, at this point, both host B and the host with domain Y are able to freely communicate (of course, thought host A). NOTE: All these hosts are on the Internet, not inside a LAN. Please, let me know if the explanation is not clear enough.

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  • Oracle (xe) 10 vs 11 . Have I lost the SQL tuning pages ? Am I going out of my mind?

    - by Richard Green
    Ok .. so perhaps the title needs calming down a bit, but basically I am after the xe 11g equivalent of the pages that you can see here : http://docs.oracle.com/cd/B25329_01/doc/admin.102/b25107/getstart.htm#BABHJAGE whcih you can then navigate to stuff like "top 50 queries" and "longest running queries" etc etc. For the life of me, I can't find that on the most recent xe edition. Please can someone direct me to where I might find these very useful admin pages ! Or was I imagining it all along :-/ Edit: These are the pages I am after: http://docs.oracle.com/cd/B25329_01/doc/admin.102/b25107/monitoring.htm

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  • Why does Chrome show overlapping text?

    - by dog44wgm
    In Chrome, news articles at: http://www.theprovince.com with a leading photo and caption show the caption text overlapped with the body text. I have an image but as a new user here I'm not allowed to upload it. It happens at that site almost always, here's an example from today: http://www.theprovince.com/sports/Canucks+Blackhawks+collision+Titanic+proportions/5721421/story.html It rarely happens elsewhere. The same link works fine in Internet Explorer so I'm guessing it's a Chrome issue. It's been like this for many months, I read the site almost everyday. I click on "Print this Article" to get a proper look at it, but it's annoying, hope someone has the answer. Thanks in advance.

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  • SunSolaris 5.10 + jdk 1.6 howto install on clean machine.

    - by user51176
    Can anyone please tell me step by step for downloading sun solaris (assuming I have a free account) and then installing jdk1.6 on it that should work? like: Download SunSolaris iso from http://.... Download patches? (for free account?) what should I do... if needed at all. Download jdk package 1.6 for sun solaris from http://... Install the jdk using... Now java and javac will work with jdk 1.6 Thanks, I tried a couple of things nothing really worked... thanks

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  • Apache Rewrite Rules

    - by Philip
    I have moved my website from a Wiki to Wordpress and in the process, realised that I have broken links to some popular pages on my website. Is it possible to fix this with a rewrite rule? I need the rule to redirect anything beginning with "^/wiki/(.+)$" to "/$1" but also replacing the "_" character used in MediaWiki slugs to "-" used in Wordpress slugs. For example: http://example.com/wiki/An_Example_Page should be pointed to: http://example.com/an-example-page Is it possible to write such a rewrite rule? Edit: It appears that Wordpress doesn't even care if the "/wiki/" part is removed - provided the slug matches, and that seems to be case-insensitive too. So all I need to do is change the "_" characters to "-" in the slugs.

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  • How to maximise a Single Window across Multiple Monitors?

    - by LePressentiment
    Say I've 3 monitors. I'll instantiate with http://www.texpaste.com/. What would I need for: The leftmost toolbox to be on the leftmost monitor? The center input blank field on the center monitor? The rightmost output display box on the rightmost monitor? Another example with 2 monitors: http://mathb.in/ Analogously, in this case, I'd want: The input blank field for the code on the left monitor? The rightoutput display box on the right monitor?

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  • Has anybody tried to create a really big storage with ZFS and plain SAS controllers? [closed]

    - by Eccehomo
    I'm considering to build one with something like this: http://www.supermicro.com/products/chassis/4U/847/SC847E26-R1400U.cfm (a chasis with two dual port multipath expanders) http://www.supermicro.com/products/accessories/addon/AOC-SAS2LP-MV8.cfm (4 8-port plain SAS controllers, 2 for each backplane) and 36 Seagate 3Tb SAS drives (ST33000650SS) OS -- FreeBSD. And it's very interesting: How good expander sas backplanes and multipath configurations work with freebsd ? How to locate a specific drive in the bay? (literally -- how to blink an indicator on the drive in freebsd) How to detect a fail of a controller? Will it work together at all? I'm asking to share any experience.

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  • A unique identifier for a Domain

    - by jchoover
    I asked a question over on StackOverflow and was directed to ask a related one here to see if I could get any additional input. Basically, I am looking to have my application aware of what domain it's running under, if any at all. (I want to expose certain debugging facilities only in house, and due to our deployment model it isn't possible to have a different build.) Since I am over paranoid, I didn't want to just rely on the domain name to ensure we are in house. As such I noted the DOMAIN_CONTROLLER_INFO (http://msdn.microsoft.com/en-us/library/ms675912(v=vs.85).aspx ) returned from DsGetDcName (http://msdn.microsoft.com/en-us/library/ms675983(v=vs.85).aspx) has a GUID associated with it, however I can find little if any information on it. I am assuming this GUID is generated at the time the first DC in a domain is created, and that it would live on for the life of the domain. Does anyone else have any inner knowledge and would be kind enough to confirm or deny my assumptions?

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  • Site faster on 1 core/1GB ram than on 8 core/32GB ram wth?

    - by xtra
    Both sites are US based. I'm located in Europe. http://198.105.209.13/ <==== site that loads tons faster on 1 core and 1gb ram ONLY (Cent OS VPS) http://108.61.35.219/ <== site is located on my dedicated server with i7-3770 cpu and 32 gb ram (Windows) and is slow as hell Even if faster site is on linux it shouldn't make such a big difference in page load seriously. Does anyone know what could be a hiccup on the dedicated server? It's just unbelievable to me that site loads faster on 1 core cpu than on dedicated server. Note that site is pretty much only thing running on dedicated server. It has 1gbps connection.

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  • Run SSH trough a proxy

    - by Row Minds
    I have a question. How can i run SSH trough a proxy or a SSH Tunneling Protocol? For example i have a computer(Ubuntu) with ip eg. 123.123.123.123 and i want to connect to my server trough a proxy eg. 111.111.111.111 so i can see in lastlog that the last authentication was made from 123.123.123.123 . I need this because i cannot access a certain server at work only with an specified range IP. What i tried so far was http://daniel.haxx.se/docs/sshproxy.html where i used ssh -D 1 [email protected] -p 443 where i had 127.0.0.1 forwarded to a SSH Tunneling Protocol http://www.nixtutor.com/linux/installing-and-configuring-an-ssh-server/ (i configurated listening on port 443 but no result, still no connection (denied) ...) This question may sound simple, but i can't figure it out, can you please help me? Thanks.

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  • VLC Server Media root

    - by Geoff
    When I run vlc like: vlc -I http I open up users to browse my whole system directory structure. This is too much. For example at the page http://localhost:8080/vlm.html I can click Edit on the Input field, then click Browse. On the pop-up I can continue to click '..'. I want to open this server up so that I can access it remotely, but I do not want to expose my whole system directory structure. How can I restrict the browse functionality to a specific sub-tree?

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  • Mirrored servers in data centers nationwide -- how? [closed]

    - by Sysadmin Evstar
    Possible Duplicate: Mirrored servers in data centers nationwide — how? Mirrored servers in data centers nationwide -- how? I flunked my IT interview by getting this question wrong. I thought that in the various metropolitan areas, an "http://google.com" request goes to the ISP's DNS server, which somehow returns an IP address for one of several geographically-nearby http servers, and then something internally rolls over to the next available local Google server. But then, I could not explain where the table of available local Google servers is actually cached, or the details of the IP address rollover. Or how they could manually take some server out of the rotation, from anywhere. So, what should I be reading now so I can ace this question next time? Also, what daemons run on these machines 24/7 to keep all those mirrored database disks synchronized?

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  • Curl, twitter oauth problem

    - by Darxval
    Does anyone see a problem with the following Curl call / how the Oauth request is built? (i am trying to get a correctly setup request so i can finish my app) So i am calling the following CURL call: C:\>curl -v -k --data-urlencode "status=Testing2" -H "Authorization: OAuth realm='', oauth_nonce=1276107867blah, oauth_timestamp=1276107867, oauth_consumer_key=yJDLH7BDdVi1OKIINSV7Q, oauth_signature_method=HMAC-SHA1, oauth_version=1.0, oauth_signature=NWU4MDdlNjk0OGIxYWQ1YTkyNmU5YjU1NGYyOTczMmU5ZDg5 YWNkNA==, staus=Testing2 " http://twitter.com/statuses/update.xml?status=Testing2 and i recieve this: * About to connect() to twitter.com port 80 (#0) * Trying 168.143.162.68... connected * Connected to twitter.com (168.143.162.68) port 80 (#0) > POST /statuses/update.xml?status=Testing2 HTTP/1.1 > User-Agent: curl/7.20.1 (i386-pc-win32) libcurl/7.20.1 OpenSSL/0.9.8n zlib/1.2.5 libidn/1.18 libssh2/1.2.5 > Host: twitter.com > Accept: */* > Authorization: OAuth realm='', oauth_nonce=1276106370blah, oauth_timestamp=1276106370, oauth_consumer_key=yJDLH7BDdVi1OKIINSV7Q, oauth_signature_method=HMAC-SHA1, oauth_version=1.0, oauth_signature=MjQzNDA1MGU4NGRmMWVjMzUwZmQ4YzE5NzMzY2I1ZDJlOTRkNmQ2Zg==, staus=Testing2 > Content-Length: 15 > Content-Type: application/x-www-form-urlencoded > < HTTP/1.1 401 Unauthorized < Date: Wed, 09 Jun 2010 18:00:22 GMT < Server: hi < Status: 401 Unauthorized < WWW-Authenticate: Basic realm="Twitter API" < X-Runtime: 0.00548 < Content-Type: application/xml; charset=utf-8 < Content-Length: 164 < Cache-Control: no-cache, max-age=1800 < Set-Cookie: k=209.234.229.21.1276106420885412; path=/; expires=Wed, 16-Jun-10 18:00:20 GMT; domain=.twitter.com < Set-Cookie: guest_id=127610642214871948; path=/; expires=Fri, 09 Jul 2010 18:00:22 GMT < Set-Cookie: _twitter_sess=BAh7CDoPY3JlYXRlZF9hdGwrCIm33h0pAToHaWQiJTkyMjllODE0NTdiYWE1%250AMWU1MzBmNjgwMTFiMDhkYjdlIgpmbGFzaElDOidBY3Rpb25Db250cm9sbGVy%250AOjpGbGFzaDo6Rmxhc2hIYXNoewAGOgpAdXNlZHsA--8ebb3c62d461d28f8fda7b8adab642af66969f7e; domain=.twitter.com; path=/ < Expires: Wed, 09 Jun 2010 18:30:20 GMT < Vary: Accept-Encoding < Connection: close < <?xml version="1.0" encoding="UTF-8"?> <hash> <request>/statuses/update.xml?status=Testing2</request> <error>Could not authenticate with OAuth.</error> </hash> * Closing connection #0 my Parameters are setup like so: var parameters = [encodeURIComponent("status="+status),encodeURIComponent("oauth_token="+ac_token),encodeURIComponent("oauth_consumer_key="+"yJDLH7BDdVi1OKIINSV7Q"),encodeURIComponent("oauth_nonce="+nonce,"oauth_signature_method=HMAC-SHA1"),encodeURIComponent("oauth_timestamp="+timestamp),encodeURIComponent("oauth_version=1.0")] var join = parameters.join("&"); var eparamjoin =encodeURIComponent(join); The key is like so: var key=con_secret+"&"+ac_secret; Signature base string is: var signaturebs = "POST&"+encodeURIComponent(url)+"&"+eparamjoin; giving this: POST&http%3A%2F%2Ftwitter.com%2Fstatuses%2Fupdate.xml&status%253DTesting2%26oauth_token%253D142715285-yi2ch324S3zfyKyJby6WDUZOhCsiQuKNUtc3nAGe%26oauth_consumer_key%253DyJDLH7BDdVi1OKIINSV7Q%26oauth_nonce%253D1276107867blah%26oauth_timestamp%253D1276107867%26oauth_version%253D1.0 and signature built like so: var hmac = Crypto.HMAC(Crypto.SHA1, signaturebs,key ); var signature=Base64.encode(hmac); making the signature: NWU4MDdlNjk0OGIxYWQ1YTkyNmU5YjU1NGYyOTczMmU5ZDg5YWNkNA== Any help would be appreciated thank you!

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  • Simple jquery ajax call leaks memory in ie.

    - by Thomas Lane
    I created a web page that makes an ajax call every second. In Internet Explorer 7, it leaks memory badly (20MB in about 15 minutes). The program is very simple. It just runs a javascript function that makes an ajax call. The server returns an empty string, and the javascript does nothing with it. I use setTimout to run the function every second, and I'm using Drip to watch the thing. Here is the source: <html> <head> <script type="text/javascript" src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load('jquery', '1.4.2'); google.load('jqueryui', '1.7.2'); </script> <script type="text/javascript"> setTimeout('testJunk()',1000); function testJunk() { $.ajax({ url: 'http://xxxxxxxxxxxxxx/test', // The url returns an empty string dataType: 'html', success: function(data){} }); setTimeout('testJunk()',1000) } </script> </head> <body> Why is memory usage going up? </body> </html> Anyone have an idea how to plug this leak? I have a real application that updates a large table this way, but left unattended will eat up Gigabytes of memory. Okay, so after some good suggestions, I modified the code to: <html> <head> <script type="text/javascript" src="http://www.google.com/jsapi"></script> <script type="text/javascript"> google.load('jquery', '1.4.2'); google.load('jqueryui', '1.7.2'); </script> <script type="text/javascript"> setTimeout(testJunk,1000); function testJunk() { $.ajax({ url: 'http://xxxxxxxxxxxxxx/test', // The url returns an empty string dataType: 'html', success: function(data){setTimeout(testJunk,1000)} }); } </script> </head> <body> Why is memory usage going up? </body> </html> It didn't seem to make any difference though. I'm not doing anything with the DOM, and if I comment out the ajax call, the memory leak stops. So it looks like the leak is entirely in the ajax call. Does jquery ajax inherently create some sort of circular reference, and if so, how can I free it? By the way, it doesn't leak in Firefox. Someone suggested running the test in another VM and see if the results are the same. Rather than setting up another VM, I found a laptop that was running XP Home with IE8. It exhibits the same problem. I tried some older versions of jquery and got better results, but the problem didn't go away entirely until I abandoned ajax in jquery and went with more traditional (and ugly) ajax.

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