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• Too Many ESTABLISHED connection from a single IP address in Apache

  - by ananthan

  netstat -ntp |grep 80 shows too many ESTABLISHED connection from single IP address. Around 300 of them and it is not an attack and user is using a 2G connection to access Apache. This is the case with other 2G connections also. As a result of this Apache is running out of children. Earlier it was showing too many close_wait and after enabling tcp_tw_reuse and tcp_tw-recycle there is not much close_wait but the number of ESTABLISHED connections increased. We are using Ubuntu 11.04 having 48 GB ram keepalive On keepalive timeout 10 max clients 800 max-request-perchild 4000 timeout 300 I have set syn_ack to 1 and syn_retries to 2. On wifi there is no such issue. Connections are closing properly, but with 2G connections Apache is running out of children and too many ESTABLISHED connection. also i have tried setting timeout from default 300 to 30,but since our project is image hosting for mobile phones,clients couldn't upload images properly as they are getting frequent time out.Also there were a lot of 408 messages so changed it to the default 300

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• setreg.exe for Windows 7

  - by victoriah

  I want to use setreg.exe (http://msdn.microsoft.com/en-us/library/aa387700(VS.85).aspx) to disable the certificate revocation check. However, it's based on an older version of .NET than what I have. Microsoft says it's shipped with the older .net SDK, and when I download that, try to install, it says something like 'can't install SDK without .net 1.1'. In the article linked it says for newer versions I should use SignTool, but SignTool does not appear to have the function I need . Is it possible to either - a) find a tool that can perform the function I need that doesn't need me to install the older .NET b) get setreg.exe without downloading the SDK or do I need to install the older .NET on my machine? And if the latter is the case, what do I need to do to install an older .NET? Will it overwrite my current .NET? Thanks,

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• Apply rewrite rule for all but all the files (recursive) in a subdirectory?

  - by user784637

  I have an .htaccess file in the root of the website that looks like this RewriteRule ^some-blog-post-title/ http://website/read/flowers/a-new-title-for-this-post/ [R=301,L] RewriteRule ^some-blog-post-title2/ http://website/read/flowers/a-new-title-for-this-post2/ [R=301,L] <IfModule mod_rewrite.c> RewriteEngine On ## Redirects for all pages except for files in wp-content to website/read RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !/wp-content RewriteRule ^(.*)$ http://website/read/$1 [L,QSA] #RewriteRule ^http://website/read [R=301,L] RewriteBase / RewriteRule ^index\.php$ - [L] RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule . /index.php [L] </IfModule> My intent is to redirect people to the new blog post location if they propose one of those special blog posts. If that's not the case then they should be redirected to http://website.com/read. Nothing from http://website.com/wp-content/* should be redirected. So far conditions 1 and 3 are being met. How can I meet condition 2?

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• Chrome logs me out of everything when I exit--tried cookie-related stuff already

  - by GreatBigBore

  I've been using Chrome very successfully for a long time. It has always kept me logged in to all my sites even after exiting the app. Recently it started logging me out of everything when I exit Chrome. I've fooled around with all the various advanced cookie settings, and I've cycled through the options hoping that Chrome just needed a wakeup call or a reset or something. I've also deleted all the cookies in case a corrupted one is confusing Chrome. Nothing works! I see cookies when I log in, but they all go away when I exit Chrome. I've searched all over the place and seen only the standard answers relating to resetting cookies, local data, sessions, that sort of thing. Any Chrome gurus out there, please send a telepathic message to my browser asking it to resume its previous excellent behavior. Alternatively, you could suggest other possible solutions.

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• Route using certain IP address

  - by spa

  I have a server with two public IPs. Both IPs are added to eth0 using ip addr add. Now I'd like to contact a server which uses IP address filtering. Only requests are allowed which use the second IP address. Is there are way to set this up using the standard route command in Linux? I guess that's not the case. So the only solution I see right now: Setup a virtual device let's say eth0:0 and bind the second IP address to it. Then I can reference the device in the route command. Edit: I can't use the second IP as primary one easily as this IP is used as failover IP.

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• Linux/Solaris replace hostnames in files according to hostname rule

  - by yael

  According to the following Perl command ( this command part of ksh script ) I can replaced old hostnames with new hostnames in Linux or Solaris previos_machine_name=linux1a new_machine_name=Red_Hat_linux1a export previos_machine_name export new_machine_name . perl -i -pe 'next if /^ *#/; s/(\b|[[:^alnum:]])$ENV{previos_machine_name}(\b|[[:^alnum:]])/$1$ENV{new_machine_name}$2/g' file EXPLAIN: according to perl command - we not replaces hostnames on the follwoing case: RULE: [NUMBERS]||[letter]HOSTNAME[NUMBERS]||[letter] my question after I used the Perl command in order to replace all old hostnames with new hostnames based on the "RULE" in the Perl command how to verify that the old hostnames not exist in file ? for example previos_machine_name=linux1a new_machine_name=Red_Hat_linux1a more file AAARed_Hat_linux1a verification should be ignore from this line @Red_Hat_linux1a$ verification should be match this line P=Red_Hat_linux1a verification should be match this line XXXRed_Hat_linux1aZZZ verification should be ignore from this line . . . .

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• SQL Server 2005 Replication Subscription Expiring Warning

  - by Aaron

  This week one of my replication subscriptions expired because I wasn't getting any alerts saying that there was a login error (I've fixed those alerts and the error). What I'd like now is, in the case that this happens again, to be able to send an alert saying that a subscription is about to expire (ie, it will expire in 1 or 2 days). I have an alert set up for when a subscription expires, but this is after the fact. I've looked through sys.messages for any text that has "Expir" in it, but I haven't found an appropriate error code yet. Would anyone be able to point me in the right direction? Thanks.

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• Move entire OS from NTFS drive to bigger ext4 drive.

  - by pangel

  According to SMART data, the hard drive I curently use is about to fail. I bought a new, bigger drive to copy the system to a safer place. The old drive is 160GB. Ubuntu was installed with Wubi, and the partition is NTFS. There are a few other partitions around (recovery partition, swap...) that I don't care about. The new drive is 320GB. I would like the new system to run on ext4, not on NTFS. I looked at solutions that use dd, or clonezilla, but it seems that moving to a different filesystem prevents me from using them. I considered installing a brand new ubuntu on the new hard drive and then copy /home from the old drive to the new drive, but I heard that there would be file permission problems. I would also have to reinstall all my software. One last thing: the NTFS drive has dead sectors. I don't know how this can influence the copy process, but I mention it just in case. edit: I do not care about the windows partition. I just want Ubuntu to make the transition.

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• How to lookup a value in a table with multiple criteria

  - by php-b-grader

  I have a data sheet with multiple values in multiple columns. I have a qty and a current price which when multiplied out gives me the current revenue (CurRev). I want to use this lookup table to give me the new revenue (NewRev) from the new price but can't figure out how to do multiple ifs in a lookup. What I want is to build a new column that checks the "Product", "Tier" and "Location/State" and gives me the new price from the lookup table (above) and then multiply that by the qty. e.g. Data > Product, Tier, Location, Qty, CurRev, NewRev > Product1, Tier1, VIC, 2, $1000.00, $6000 (2 x $3000) > Product2, Tier3, NSW, 1, $100.00, $200 (1 x $200) > Product1, Tier3, SA, 5, $250.00, $750 (5 x $150) > Product3, Tier1, ACT, 5, $100.00, $500(5 x $100) > Product2, Tier3, QLD, 2, $150.00, $240 (2 x $240) Worst case, if I just get the new rate I can create another column

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• Interfaces: profit of using

  - by Zapadlo

  First of all, my ubiquitous language is PHP, and I'm thinking about learning Java. So let me split my question on two closely related parts. Here goes the first part. Say I have a domain-model class. It has some getters, setters, some query methods etc. And one day I want to have a possibility to compare them. So it looks like: class MyEntity extends AbstractEntity { public function getId() { // get id property } public function setId($id) { // set id property } // plenty of other methods that set or retrieve data public function compareTo(MyEntity $anotherEntity) { // some compare logic } } If it would have been Java, I should have implemented a Comparable interface. But why? Polymorphism? Readbility? Or something else? And if it was PHP -- should I create Comparable interface for myself? So here goes the second part. My colleague told me that it is a rule of thumb in Java to create an interface for every behavioral aspect of the class. For example, if I wanted to present this object as a string, I should state this behaviour by something like implements Stringable, where in case of PHP Stringable would look like: interface Stringable { public function __toString(); } Is that really a rule of thumb? What benefits are gained with this approach? And does it worth it in PHP? And in Java?

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• PHP5.3 FastCGI doesn't use global config's values

  - by mega.venik

  There's a Centos6.3 system. Apache 2.2.15 + mod_fcgid + PHP 5.3.3 There's a problem with date.timezone value. It's mentioned in the global /etc/php.ini like this: date.timezone = "Europe/Moscow" And doesn't mentioned in user's local php.ini. As a result, I'm getting lot's of warnings like: Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'Europe/Helsinki' for 'EEST/3.0/DST' instead in ... Including the date.timezone parameter into the user's php.ini solves the problem, but I don't think, that it's the best solution. Maybe someone have faced this problem and can give an advice? Thanks! P.S. Creating /etc/php.d/timezone.ini with the timezone info aslo does nothing:(

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• iPhone and Mac Twitter App Not Parsing HTML in Feeds

  - by otakrosak

  I've come across this problem where my tweets on the iPhone and Mac Twitter app are not parsing the HTML properly. In any browser, the HTML is parsed fine. It only happens to the apostrophe character (') and on the iPhone and Mac Twitter app. Also, I'm using the dlvr.it service to push my Drupal blog posts to my Twitter feed. My initial guess was that it was the RSS generated by Drupal, but if that were the case, then the feed displayed on the browser would be affected too. Any ideas anyone? Any help would be very much appreciated. P.S: I apologize beforehand if this question already exists. I did search for it but based on what I queried, nothing came up.

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• Why can a network address not be a valid host address?

  - by Goblinlord

  So... I have studied for CCNA and such and been working with IP networking at the least the past 8 years or so. I have always seen and been told that the network address for a subnet is not a valid host address. Now first I will start by saying I know this is true. My question is more... is there a technical reason it can not be used or was it just arbitrarily agreed upon when the specification was designed? I understand why a broadcast address can not be used (because it is ACTUALLY used). The thing is when I see a network address used it is normally only in routing which is specifically using NETWORK addresses. This being the case, (network addresses being used only when you are expecting a network address) is there some technical reason that they could not have the network address be an actual valid host address?

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• I need a wirless interenet card thingy for my stationary computer

  - by user60859

  Going to move my stationary computer and hook it up to the TV. Which is far away from the wireless router. So i'm going to need a way to go on the Internet wirelessly from my stationary computer. I was looking at some of those.. wireless pci adapter things. But i have no idea which one would be compatible with my computer. How can i tell? oh i have a pentium 4, Windows XP like 600 megs of ram in case any of that matters.

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• Pinging 192.168.1.4 is looking to 192.168.1.2?

  - by BVernon

  When I run the command "ping 192.168.1.4" I am get the following results: Pinging 192.168.1.4 with 32 bytes of data: Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Can anyone help me understand why in the world it's telling me that 192.168.1.2 is unreachable when that's not even the ip address I typed in? I'm very confused. Also in case it's relevant, I'm on a workgroup.

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• Dual monitor, permission issue

  - by cenna75

  I had a dual monitor configuration going on for quite some time. One day, after moving the computer to another location and reconnecting everything, it changed such that I saw everything in double (being very much sober), I think it's called the 'mirrors' config. Anyway, from there on, there was nothing to be done through the system settings gui to change it back, as it wouldn't allow me to save any modification. The error I get when clicking 'save' is : "Failed to create file /home/me/monitors.xml.xxxxxx. Permission denied", xxxx being a random code, changing everytime. However, I can save all the configurations I want just fine by using the terminal, in my case: xrandr --output DVI-I-1 --right-of VGA-1 So I do have a workaround and this is therefore a question more out of curiosity. What could possibly have changed to make it impossible to do it through the gui and still letting me change the config using xrandr without being root? I'm having a hard time believing it could have anything to do with disconnecting/reconnecting the monitors... Any idea? Thanks !

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• Unable to move or delete files

  - by Erik

  Hi: Just today I got the following error while trying to move/delete several files: The action can't be completed because the file is open in another program. The file wasn't open, but just in case, I closed all programs. When that failed to allow me to move or delete the file, I restarted the computer. When that failed to let me move/delete I came here. Any suggestions? The files can be copy/pasted but move/delete fails even after multiple restarts.

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• Ubuntu 12.10 and nVidia drivers don't like each other?

  - by mingos

  I decided to upgrade both my computers from Precise to Quantal. What a mistake that was. My laptop has a nVidia GT 330M card, while the desktop has an nVidia 9600 GT. In both cases everything goes great as long as I use the Nouveau driver (ugh!). Can't really play games (Amnesia... and hoping for Steam Beta participation...), even though it's OK for work. Now, ever since 9.04 or so, I just installed nvidia-current and all just worked. Since 12.10, after installing nVidia drivers, Unity won't start at all (hangs with only the wallpaper displayed, no cursor or widgets), Gnome Shell is permanently in fallback mode. Now, I have tried on both computers, with multiple clean installs on Ubuntu (two separate downloads, just in case), one from Ubuntu Gnome Remix. And additionally, Fedora 17, which seems to suffer from the same issue. Tried all nVidia driver suggestions available in Software Sources, and even compiled the drivers myself. I tried several versions of the driver to exclude an issue with the newest one. In my frustration, I have switched to Windows (which, ironically, "just works" with my hardware), but still hold a twin OS configuration on the desktop and would like to use Ubuntu again. So, can anyone point me to where the issue might lie?

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• Cloud storage services offering one-time download links? [closed]

  - by TARehman

  Is anyone aware of consumer-targeted cloud storage services that allow users to generate a one-time download link for hosted files? Case in point: I have an encrypted container with some documents I need to send to a vendor. I would prefer to give them a one-time download link, so that I know when they have accessed the file, and then inform them of the passphrase by phone. I have heard that MediaFire offers 1-time links, but that they are buried in tons of advertising. At the moment, I'm not sure that I consider MediaFire fully legitimate; I'm more interested in solutions with Google Drive, Box.net, DropBox, etc.

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• Can I move a copy of Windows 7 from one machine to another?

  - by Chopper3

  This is a pretty basic question sorry but I've looked in the 'related questions' and couldn't find an answer. When Windows 7 came out I bought a copy of Home Premium, the retail box with both 32 and 64 bit versions, to install via Boot Camp on my macbook. I've just got a retail (32 and 64 bit) copy of Windows 7 Ultimate that I'd like to install instead-of/over the Home Premium version and it struck me that I should, at least in principal be able to install the Home Premium version on my son's machine - is this the case and if so is there anything I should do first or once they're installed to let MS know I'm being a good guy about this? Sorry it's such a dim question but I'm a serverfault guy really and know very little about Windows. Thanks.

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• Configure a app in a subpath in nginx

  - by Rubem Azenha

  I have a nginx + passenger + single rails app setup in a Fedora server. My nginx.conf regarding my app looks something like this: server { listen 80; server_name myapp.mycompany.com; root /opt/apps/myapp_large_name/public; passenger_enabled on; client_max_body_size 4M; } So when I access myapp.mycompany.com.br it access to my rails app under /opt/apps/myapp_large_name/public. I want to be able to configure a subpath to access to another app (in this case, monit). I want something like that: myapp.mycompany.com.br/monit access the monit app. Is it possible?

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• How to avoid being fooled

  - by Dacav

  I'm a big fan of the OpenSource development model, and I think that sharing information, knowledge and ideas is the best way of working in software development. Still I think that being hired for proprietary software development must not be demonized. Of course, as there's a no reward in terms of sharing there must be a bigger reward in terms of money (i.e. I surrender all my rights for cash). It may happen that one gets hired piecework, for a single project: in this case one is more vulnerable to dishonest employers. This didn't happen to me personally, but some friends of mine had bad experiences, and lost a lot of time without being fairly retributed. Of course a contract should protect both parts. But contracts can be very generic in the specification. Software is not anything but a palpable good! Besides I don't think that contracts can distinguish between a well written software and a poorly written one. Note also that, in this (nasty) spirit, it's also likely that the employer cannot trust the employee! So also the employer should be protected by a dishonest employee). My question is the following: Which is, in your opinion, a good way of avoiding this kind of situation from the technical perspective?

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• Which is the cheapest machine where I can run linux and plug in some webcams? (and with network inte

  - by marc.riera

  I'm looking for a very cheap machine to run a linux distro for security(anti-thief) software. I would like to be able to connect to the network and a couple of webcams. May be ip-webcams or usb-webcams. The idea is having a machine with batteryes, laptop style, but there is no need to have a display/monitor attatched all the time. I'm planning to spend no more than 200$, in case it also gets stolen. Any advice on what to buy? (all modifications to this security plan are welcome) Thanks.

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• Grub2 menu after vmware gust customization

  - by poopa

  Hi, I have ubuntu 9.10 desktop VMware VM with the default grub2 installed. There is some weird problem with this VM. When you clone this vm and have a customization script run, the cloned machine crashes at first boot (VMware does not officially suport customizaing Ubuntu newer than 8.04). After the creash the Grub boot menu is displayed but there is not time out. I checked /boot/grub/grub.cfg and it does indeed show a timeout of 10 seconds. Nothing happens till I select an option with the keyboard. The second time the Ubuntu loads, it does not crash. My question is, how do I make the grub menu timeout in that case? Thanks.

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• Any reasonable UPS for a Desktop PC, just to shut it down?

  - by Michael Stum

  While I do have a surge protector to protect against overvoltage (hopefully), I have nothing against undervoltage. When a lightning storm hits, I had the lights flickering at some point. The PC continued to run, but it got me thinking of getting a UPS as a way to a) have a clean 120V/60Hz power source and b) have a way to shut down the PC in case something bad happens. I heard not all UPS' protect against power spikes, so I wonder if someone has a recommendation? It does not need to keep the PC on for a long time if the power goes out, it's good enough if it shuts down the PC after 5 minutes or so. There are 2 PCs connected. One is a Core i7-860 with a Radeon 5870 running Windows 7 Ultimate (so quite power hungry. It uses a 600W PSU but I have no measurements of the actual usage), the other one is a Windoes Home Server, running WHS/Windows Server 2003. Any recommendations in the low-price segment?

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