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• php5-mysqlnd on debian wheezy/sid?

  - by Joseph

  I am trying to install php5-mysqlnd on a fresh install of Wheezy (/etc/debian_version refers to it as wheezy/sid) and I'm having a problem: root@debian:/var/www/lottery1# apt-get install php5-mysqlnd Reading package lists... Done Building dependency tree Reading state information... Done php5-mysqlnd is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0 B of additional disk space will be used. Do you want to continue [Y/n]? Y Setting up php5-mysqlnd (5.4.0-3) ... ucfr: Attempt from package php5-mysqlnd to take /etc/php5/mods-available/mysql.ini away from package php5-mysql ucfr: Aborting. dpkg: error processing php5-mysqlnd (--configure): subprocess installed post-installation script returned error exit status 4 Processing triggers for libapache2-mod-php5 ... configured to not write apport reports Reloading web server config: apache2. Errors were encountered while processing: php5-mysqlnd E: Sub-process /usr/bin/dpkg returned an error code (1) It seems there is some sort of conflict with the php5-mysql package, but I still get this error even after removing (with --purge) the php5-mysql package. Any thoughts? I'm trying to run a web tool that makes heavy use of mysqli_result::fetch_all(). Thanks!

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• How to copy a bunch of pages? Is there a 3rd party tool?

  - by unknown (yahoo)

  (I asked the following question at the DNN forum, and also at snowcovered. Nobody knew of such an obvious time-saver being for sale. I'm posting here in case anybody knows of a freeware module that might do this.) By "groups of dnn pages", I mean pages that form a hierarchy (not necessary a hierarchy that is headed with a page at the same level as the Home page.) I know that I can copy web pages, one by one, using the admin login via the web-based dnn interface. But, I'd prefer a script or wizard, of some sort (that runs scripts behind the scenes) that can allow me to 1) specify a web page that I want to copy (along with the hierarchy of pages under it) 2) specify the names and titles of the new top-level pages 3) specify whether the contained modules of the top-level page that I want to copy is to be : ( ) New ( ) Copy ( ) Reference (as in the web-based interface) 4) repeat 3) for each of the source pages in the hierarchy that I want to copy You might say that I am looking to do something similar to creating a portal web site based on a template, except that it's not an entirely new website - instead it's a section of the current web site. I might want to do this because I have an organization which is broken into chapters, and I want each chapter to have, say, it's own General Information page (which acts like it's home page), and underneath that, in it's hierarchy, a Contact Info page and an Events page. so: Home Page   General Information Page     Contact Info     Events -- Home Page   General Information Page     Contact Info     Events   General Information Page Kiwanis - Bloomfield     Contact Info     Events   General Information Page Kiwanis - Dayton     Contact Info     Events If I have 200 chapters, I certainly don't want to copy those 3 web pages using the web based interface, as that would take a long time. (And imagine if each chapter's new sub-website had 30 pages!) I just want to specify the parameters of a copy process, then press a button, and let the system do the rest.

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• Question about Displaying Documents and the CQWP in MOSS 2007

  - by Psycho Bob

  My organization is in the process of converting our intranet over to a SharePoint solution. Part of this intranet will be the movement and organization of all our internal documents. Currently, we have 11 pages of document links, each with its own subheadings. So far I have it set where each document has a custom field called "Page" with a check box list of all the document pages on the intranet site. On each individual page, I have setup a Content Query Web Part that displays the documents that have the corresponding Page value set (i.e. if a document Page value has been checked for "HR" it will appear on the HR page). The goal of this setup is to allow the nontechnical personal who will be responsible for the maintenance of the documents to be able to upload new documents to the documents list and note on which pages they should appear on without having to manually update the pages themselves. The problem that I am having is that I cannot seem to find a good way to sort the documents into their subheadings once they are on the appropriate page. I could create individual check boxes for each page/subheading combination, but this would create a list of approximately 50-75 items. Does anyone have any ideas as to how I could accomplish this, either via CQWP or by different means? Goals/Requirements of Installation Allow Intranet documents to be maintained by nontechnical personnel Display documents on the appropriate pages without user having to edit actual page or web part Denote document page location using user settable document attributes (if possible) Maintain current intranet organization and workflow Use only one document list without subdirectories NOTE: I am aware that this is not the most efficient or elegant way to do things, but these are the requirements I have been given for the project.

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• What could cause a WMV to not play to completion in a browser?

  - by Ty W

  A realtor has had videos created for a community she is selling homes for, the people who made the videos gave them to us in WMV format. I can play these videos without any problem in Windows Media Player, VLC, and Quicktime (via Flip4Mac). I can play the videos from their location at videohomeguide.com in my browser without any trouble. However when I upload the files to our server the video stops at about the 1 minute mark in Safari and FireFox on Mac OS X Snow Leopard. I'm not sure if Windows browsers have the same issue because they are loaded using Windows Media Player. http://carolepaul.com/images/uploads/cottageslsjamestown.wmv <- our server, will fail at 1:09ish. http://www.videohomeguide.com/media/cottageslsjamestown.wmv <- should play to completion (3:27ish) The files generate the same MD5 hash on my desktop and on our server. I used WGET to transfer the files, always downloading from videohomeguide.com. Since the files are identical and are playable using VLC/WMP/Quicktime, and playable in the browsers from videohomeguide.com it seems to me that it is some sort of server config... maybe incorrect headers sent to the browsers? Here are the headers sent and received by FireFox on OS X: http://carolepaul.com/images/uploads/cottageslsjamestown.wmv GET /images/uploads/cottageslsjamestown.wmv HTTP/1.1 Host: carolepaul.com User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip,deflate Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Keep-Alive: 115 Connection: keep-alive HTTP/1.1 200 OK Date: Mon, 29 Mar 2010 20:43:20 GMT Server: Apache/1.3.41 (Unix) PHP/5.2.6 FrontPage/5.0.2.2635 mod_psoft_traffic/0.2 mod_ssl/2.8.31 OpenSSL/0.9.8b Last-Modified: Wed, 02 Dec 2009 18:08:46 GMT Etag: "1e7919c-198eadc-4b16ad2e" Accept-Ranges: bytes Content-Length: 26798812 Keep-Alive: timeout=10, max=200 Connection: Keep-Alive Content-Type: video/x-ms-wmv

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• transparently proxying a firewalled web application from a non-standard port to port 80

  - by Terrence Brannon

  I have a web application that serves on port 8088 on $server. However, the only port accessible from remote on $server is port 80. Furthermore, only CGI programs can execute on port 80. I would like to write a CGI program accessible via port 80 that allows one to use the web app running on port 8088. From my view, an ideal solution would be some sort of Java web browser that simply opened up a window and allowed me to use the program running on that port. The CGI program would simply initiate a web browser applet or something. I wrote a Perl CGI program that does it, but I really would like a more transparent solution: my $q = new CGI; print $q->header; use LWP::Simple; use HTML::Tree; my $base = "http://localhost:8088"; my $request = $base; my $qurl = $q->param('url'); if (length($qurl) > 1) { warn "long $qurl"; $request = "$base$qurl"; } else { warn "short $qurl"; } my $content = get($request); my $tree = HTML::TreeBuilder->new_from_content($content); my @a = $tree->look_down('_tag' => 'a'); for my $a (@a) { my $url = $a->attr('href'); next if index($url, '#') > -1 ; $url = "?url=$url"; $a->attr(href => $url); } print $tree->as_HTML;

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• Building a Media Center PC with Comcast Cable...?

  - by Rob

  Alright - so this might be a stupid question but I've never been all that much into TV. I currently have Comcast cable. I've just got the 'basic' 2-60 package or whatever; I've just always plugged the cable into the back of my TV. I've never had a cable box. Recently, Comcast has been pulling channels off of my line-up. Most recently, the stole the TV Guide channel from me. I'm told this is part of a push to get customers to switch to their digital line-up. But, I'm also told it requires some sort of digital receiver for each TV you've got. I don't want to buy a bunch of these digital receivers and I don't want to pay the monthly rental fee...but I have heard of how awesome media center PCs are and some really cool things they can do. And, I've got loads of PC parts sitting around. So, can someone guide me through this a bit? Are there computer video cards or TV tuners that are going to work with Comcast's digital cable? What kind of price range are we looking at?

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• Outlook 2010 OSC with SharePoint 2010 documentation or help

  - by skypanther

  I'm looking for documentation or help to set up Outlook 2010's social connector to work with SharePoint 2010. I can't find much info other than some MS videos and blogs saying that it's possible. They say "we are already connected to SharePoint, so let's add in the XYZ connector..." but don't tell how they connected to SharePoint. Server A: Win2K8 x64, Exchange 2010 x64, domain controller Server B: Win2K8 x64, domain member, SQL Server 2008 R2, SharePoint 2010 Client: Win 7, domain member, with Office 2010 RTM (most every component installed, including the OSC) I've added my domain users to a group. In SharePoint, I granted that domain group permissions to access the site. As any of the domain users, I can use IE to log on the My Sites pages. From there, I can add lists, blog posts, status updates etc. In Outlook, I can add a SharePoint contact to my Contacts list. But, all I see in the People Pane is emails my users have exchanged. I don't see any of the other SharePoint status updates. When I try to use the "Add this person to a social network" link to connect them with my My Sites, the process fails. It doesn't give any sort of error message that helps me figure out why. Just a "Try Again" button that likewise fails. Any guides, links, suggestions? I'm pretty novice-level with SharePoint but mildly adept with the other technologies.

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• InstallShield or Windows installer corrupted

  - by Bobby S

  Just recently I've been unable to install any software on my Windows 7 machine. Anything that uses InstallShield or the Windows installer will just hang or give a weird error. I noticed there will be many duplicate isbew64.exe processes (like 25) that launch and then just sit there or else a lot of msiexec.exe *32 processes, depending on what I'm trying to install. One piece of software specifically is the Logitech Harmony software. It gives me an *is_string_not_defined* error, saying c:\program files (x86)\:\ the filename, directory name, or volume label syntax is incorrect. The other thing I was trying to install was Battlefield: Bad Company 2, and that just hangs as well, and then just leaves all the Windows installer processes running in the background after I quit the install process. Very odd. I've checked well and googled these issues, it doesn't appear to be any sort of malware issue. I feel like it's related to some kind of corrupted installer application. I've rebooted, deleted the InstallShield folder in program files/common files as some places online suggested but to no avail. I have no idea what to do, any ideas?

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• grepping a substring from a grep result

  - by allentown

  Given a log file, I will usually do something like this: grep 'marker-1234' filter_log What is the difference in using '' or "" or nothing in the pattern? The above grep command will yield many thousands of lines; what I desire. Within those lines, There is usually one chunk of data I am after. Sometimes, I use awk to print out the fields I am after. In this case, the log format changes, I can't rely on position exclusively, not to mention, the actual logged data can push position forward. To make this understandable, lets say the log line contained an IP address, and that was all I was after, so I can later pipe it to sort and unique and get some tally counts. An example may be: 2010-04-08 some logged data, indetermineate chars - [marker-1234] (123.123.123.123) from: [email protected] to [email protected] [stat-xyz9876] The first grep command will give me many thousands of lines like the above, from there, I want to pipe it to something, probably sed, which can pull out a pattern within, and print only the pattern. For this example, using an the IP address would suffice. I tried. Is sed not able to understand [0-9]{1,3}. as a pattern? I had to [0-9][0-9][0-9]. which yielded strange results until the entire pattern created. This is not specific to an IP address, the pattern will change, but I can use that as a learning template. Thank you all.

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• Messed up USB stick doesn't show in blkid

  - by Felix

  I was playing around with a USB stick (booting archlinux with qemu off of it and trying to perform an installation on the same stick at the same time -- brave, I know, but I was just messing around). Now, after failing to boot and install at the same time, it seems I have sort of messed up my stick. What I think happened is that I used cfdisk to wipe everything on it and create one big partition, but formatting it then failed, so now there's a big partition with no filesystem. Just to make it clear: I'm not worried for my stick, I know I can recover it at any point. What I find intriguing is that after plugging the stick into my computer (using Ubuntu), there's no (terminal) way to find out what block device (/dev/sdx) it has associated. The only way I could determine that was with GParted: But blkid shows the following: /dev/sda1: UUID="12F695CFF695B387" LABEL="System Reserved" TYPE="ntfs" /dev/sda2: UUID="A0BAA6EABAA6BC62" TYPE="ntfs" /dev/sdb1: UUID="546aec8b-9ad6-4571-b07a-adba63e25820" TYPE="ext4" /dev/sdb2: UUID="2a8b82d8-6c6e-4053-a446-bab970d93d7c" TYPE="swap" /dev/sdb3: UUID="7cbede7d-c930-4e59-9d1b-01f2d79bd092" TYPE="ext4" No trace of /dev/sdc. My question is: if I didn't have a graphical interface (to use GParted), how would I have known which block device is my stick?

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• The RTL8111/8168B NIC under Linux and the r8168 driver

  - by nik

  So I've got one of the infamous R8168 Realtek ethernet NIC, which have some problems under Linux. After some research, I found out I had to use the r8168 driver for this card (and not the r8169 which still loads when nothing else is available), which I did. So now everything works fine... Sort of. My download and upload rates are more than halved compared to what I should get. When I test (with eg. speedtest) I get something like 20M (often 15M) in download and 30M in upload, but if I test under Windows (everything is otherwise identical: same ethernet cable, same connection, at the same time of the day (well 5 min apart)...), I get 50M upload/download (which is what I expect). Where can it come from? Here's some info: ~ # lspci [...] 06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) ~ # modinfo r8168 filename: /lib/modules/3.2.1-gentoo-r2/net/r8168.ko version: 8.027.00-NAPI license: GPL description: RealTek RTL-8168 Gigabit Ethernet driver author: Realtek and the Linux r8168 crew <[email protected]> srcversion: 0A6E9F1D4E8E51DE4B6BEE3 alias: pci:v00001186d00004300sv00001186sd00004B10bc*sc*i* alias: pci:v000010ECd00008168sv*sd*bc*sc*i* depends: vermagic: 3.2.1-gentoo-r2 SMP mod_unload [...] ~ # mii-tool -v eth0: negotiated 100baseTx-HD, link ok product info: vendor 00:07:32, model 17 rev 4 basic mode: autonegotiation enabled basic status: autonegotiation complete, link ok capabilities: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD advertising: 100baseTx-HD 10baseT-FD 10baseT-HD flow-control link partner: 100baseTx-FD 100baseTx-HD 10baseT-FD 10baseT-HD

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• Ubuntu 11.10 ATI Drivers vesa park

  - by Matthias

  This is probably not an issue, from all I can get it seems my hardware and drivers are properly installed. However when I go to system settings - system info - graphics. I get Driver: VESA:PARK. Experience: Standard. my graphics card is a: Ati Mobility Radeon HD 5470 512MB. I am pretty sure it's not a same-die GPU since there is a fan exhaust at the side of my laptop which I presume is the exhaust for the GPU... I have no clue whatsoever what this means. I installed the ati drivers first using the 'additional drivers' method. However I also decided to look a manual installation up via the terminal since I've had problems before with Ubuntu and ati cards. I used wget and something among the lines of sh dpkg -i. I can recall exactly, I took them from another stackoverflow answer. Anyway, it seems everything is installed properly since it shows up with these commands: sudo lshw -C video fglrxinfo however the first command seems to detect hardware, not the driver per se, although the driver is probably needed to detect the hardware anyway which would indicate its properly installed. I am still not sure about that VES:PARK thing though. I'd like to know what it means.. Also, if someone happens to know a good way of testing if the gpu is connected/being used...some sort of benchmark maybe...I'd like to hear it. P.s. I can find my way around in Ubuntu but I would probably still be considered a rookie by more experienced users.

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• Home server hard drive: 186k start-stop cycles in 325 days?

  - by j-g-faustus

  I set up a home server about a year ago, using Ubuntu server (10.04 LTS at the moment), four disks in RAID 5 for storage (WD Green 1.5 TB) and a laptop drive for the OS. Today the output of smartctl, a command line utility for checking the SMART attributes of a hard drive, tells me that the primary OS drive has had no less than 186,000 start-stop cycles in 325 days and may be nearing the end of its lifespan. The smartctl output is in "normalized values", in this case a number between 200 and 000, where 200 is "brand new" and 000 means "worn out". My disk gets 001. So I wonder what happened: 186k start/stop cycles in 7820 hours is about one start/stop per 2.5 minutes around the clock. This seems somewhat excessive for a computer that sees actual use once or twice per day. (The RAID disks are normal, averaging to one start/stop per day, as expected.) Does anyone have similar experiences, or pointers to what might be the issue here? Specifically I'd like to know Why the massive start/stop count? Do I have some sort of configuration issue? Could there be a background service that is causing trouble? Could having a laptop disk as the OS drive be part of the problem? Can anyone confirm or deny this? Here is the /etc/hdparm.conf configuration /dev/sda { apm = 127 spindown_time = 120 } and the most relevant parts of smartctl --attributes /dev/sda: smartctl version 5.38 [x86_64-unknown-linux-gnu] Copyright (C) 2002-8 Bruce Allen === START OF READ SMART DATA SECTION === SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 001 001 000 Old_age Always - 185875 9 Power_On_Hours 0x0032 090 090 000 Old_age Always - 7820 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 109 193 Load_Cycle_Count 0x0032 118 118 000 Old_age Always - 246833 194 Temperature_Celsius 0x0022 107 098 000 Old_age Always - 36 As I generally prefer my drives to last more than a year, any advice is appreciated.

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• An easily customizable linux distribution using minimal disk space?

  - by Frank

  I'm looking for a linux distribution that can be easily used to create my own distribution that's the same system with some software installed. So basically I should be able to create an iso which, when installed, will have the linux distribution with my desired installed. More specifically, I plan on installing mysql and a bit of my own software which shouldn't be too big. However, this distribution needs to be extremely small in terms of disk space. The distribution, including mysql should not exceed 100mb. It should, of course still be able to connect to the internet and perform other standard functions. I don't need X/any sort of window manager, and would prefer not to have it since it would increase disk usage. Currently I have tried ttylinux and tiny core linux. I've found that ttylinux, while is extremely small, has almost nothing so that mysql can't even be installed. Tiny core linux, on the other hand is a bit too big. I've found openembedded and linux from scratch, but I would prefer for the install and build process to be much easier. What other distribution would you recommend for my purposes? Minimizing disk usage is the most important, followed by ease of installing and creating the custom distribution.

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• Hubs/switches taking out switches?

  - by Bart Silverstrim

  Here's the issue...we have a network with a lot of Cisco switches. Someone plugged in a hub on the network, and then we started seeing "weird" behavior; errors in communication between clients and servers, or network timeouts, dropping network connections, etc. It seemed that somehow that hub (or SOHO switch) was particularly freaking out our Cisco 3700 series switches. Disconnect that hub or netgear-type SOHO switch and things settled down again. We're in the process of trying to get a centralized logging server for SNMP and management, etc., to see if we can trap errors or narrow down when someone does this sort of thing without our knowledge because things seem to work, for the most part, without issue, we just get freaky oddball incidents on particular switches that don't seem to have any explanation until we find out someone decided to take matters into their own hands to expand available ports in their room. Without getting into procedure changes or locking down ports or "in our organization they'd be fired" answers, can someone explain why adding a small switch or hub, not necessarily a SOHO router (even a dumb hub apparently caused the 3700's to freak out) sending DHCP request out, will cause issues? The boss said it's because the Cisco's are getting confused because that rogue hub/switch is bridging multiple MAC's/IP's into one port on the Cisco switches and they just choke on that, but I thought their routing tables should be able to handle multiple machines coming into the port. Anyone see that behavior before and have a clearer explanation of what's happening? I'd like to know for future troubleshooting and better understanding that just waving my hand and saying "you just can't".

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• Is there an high quality natural text reader for the mac?

  - by Another Registered User

  I'm reading about 150 pages of text on screen, every day. I will have to read about 15.000 in the next upcoming months. No joke. Well, the problem is this: I suffer from a sort of attention deficit hyperactivity disorder which forces me to read every sentence up to 10 times until I really get it. Mac OS X Snow Leopard has a built-in text reader with the name "Alex". Although it is already pretty good quality, I know there are far better natural sounding voices out there. I have heard already voices that are absolutely amazing compared to Alex. They're so good, that you can't tell anymore the difference between a real person or a computer. Alex still has this "metal factor" in its voice, which makes my ears hurt after 8 hours of listening. The next problem with Alex is, that he never makes a break after a sentence. Also, it's not possible to think about a sentence and then continue reading. It's also not possible to have him repeat a sentence, without tedious text selection and shortcut usage. Actually, the best tool I can imagine would have the option to read a sentence and move on to the next one after pressing a special key, OR repeating the previously one after pressing a special key. That would help so much! And if that's even with one of those bell lab / AT&T / whatever super-natural voices, even better! But it would be already a great relief if there was just a better tool to control Alex. To let him make breaks after sentences or let him speak big chunks of text sentence-by-sentence with fine-grained control over repetition and moving on. Is there anything?

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• What do you upgrade to make games load faster? [on hold]

  - by Superbest

  Let's say you have a relatively modern game like Shogun 2. The loading screens take several minutes. This bothers you and you'd like to improve it. What is actually going on when loading screens are up? I'm guessing assets are being loaded into memory from disk, and possibly being decompressed first. However, what is actually causing the slow down? The memory? Mainboard? CPU? HDD? If you had $100 to spend on upgrades and your only goal is to speed up loading screens without reducing other performance, what component of the computer does it make sense to upgrade for maximum benefit? If your answer is "it depends on the existing setup", what sort of benchmarks would you run to determine what is causing the bottleneck? What if you had $500 instead? I give the two budgets for context. I am not asking for actual recommendations about which component to buy (nor are the numbers supposed to be rigid limits), but what features are important when shopping for components with small and large budgets (a large budget could allow buying multiple components which are not so good on their own, but work particularly well together). I mention Shogun 2 as an example, but I'm asking about reducing overall loading times, across all games, not just one game. Therefore, "put it on a solid state disk" probably won't be good solution, because putting every game on your SDD will quickly fill it up.

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• Load Sharing Regarding Large Websites

  - by JHarley1

  Hello, I have a question regarding Load Sharing for large websites. My Understanding: So if you have a website that has millions of fits a day you will need to have an architecture that can support this sort of pressure. You can either do one or two things: Invest in a single large server that has huge amounts of processing power, memory and storage (such as Microsoft's TerraServer). Spread the load of your website across a number of machines. Let me tackle the second approach, so you have a collection of machines all running Web Server Software and all having access to identical copies of the websites pages. You can either spread the load across these machines using a cyclic pattern in a DNS or you can use a Load Ballancing Switch. The advantages of this approach is: - Redundancy - servers can fail and the others would "pick up the slack" - Incremental - the ability to easily add new machines to this set-up. My Question's Is there a Virtual approach to this issue of load balancing now? If the website runs from a database - is there still only a single copy of the database? If a user had a session running on one Server (e.g. they had gone to www.example.org and had been assigned to Server 2 - were they had created a session) if they refreshed the website (and were allocated Server 3) would they still have their session? What are the other disadvantages associated with Load Balancing? Many Thanks, J

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• Throughput; capacity planning help for C10K like design

  - by z8000

  I am designing a network service in which clients connect and stay connected -- the model is not far off from IRC less the s2s connections. I could use some help understanding how to do capacity planning, in particular with the system resource costs associated with handling messages from/to clients. There's an article that tried to get 1 million clients connected to the same server [1]. Of course, most of these clients were completely idle in the test. If the clients sent a message every 5 seconds or so the system would surely be brought to its knees. But... How do you do less hand-waving and you know, measure such a breaking point? We're talking about messages being sent by a client over a TCP socket, into the kernel, and read by an application. The data is shuffled around in memory from one buffer to another. Do I need to consider memory throughput ("5 GT/s" [2], etc.)? I'm pretty sure I have the ability to measure the basic memory requirements due to TCP/IP buffers, expected bandwidth, and CPU resources required to process messages. I'm a little dim on what I'm calling "thoughput". Help! Also, does anyone really do this? Or, do most people sort of hand-wave and see what the real world offers, and then react appropriately? [1] http://www.metabrew.com/article/a-million-user-comet-application-with-mochiweb-part-3/ [2] http://en.wikipedia.org/wiki/GT/s

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• I accidentally hijacked my localhost

  - by Zach L

  Opening localhost in the browser is pointing a local webpage (examplePage) after playing with some config files a while back, and I can't figure out how to restore the default behavior. Background: I have XAMPP installed on my Windows 7 machine, and a webpage at c:/xampp/htdocs/examplePage. A couple weeks ago, I was on a mission to get sites root-relative urls (/resource) to work, so I played around with a bunch of apache/conf files, including httpd.conf and httpd-vhosts.conf and also was messing with the Windows hosts file. I gave up at some point, didn't document exactly what I did, and have since probably forgotten some of what I did. Many of my changes stemmed from suggestions in this StackOverflow post What I've Tried I commented out my additions to the hosts file I turned off XAMPP (thus hopefully negating any apache config file effect) I reverted to my original DocumentRoot in httpd.conf anyway (xampp/htdocs) localhost still displays examplePage. Even with xampp turned on (my reverted DocmentRootisn't taking effect) Does anyone know what I may have done and how I can fix it? Update : Its been resolved, thank everyone so much in taskmanager, theres a couple instances of httpd.exe (Apache HTTP Server). I ended these, and opened XAMPP, restarting apache. all references to examplePage in my .conf files that I could find had been commented out or removed. I imagine that the old versions were still in effect for some reason, and manually ending the Apache processes fixed this. As a point of interest, Its still a mystery why those processes were running - I cannot reproduce that situation. I must've stumbled upon a XAMPP bug of some sort.

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• FastCGI and Apache 500 error intermittently

  - by benkorn1

  I have a FastCGI (mod_fastcgi)problem. It happens every once in a while, and does not casue a complete server meltdown, just 500 errors. Here are a couple things. First I am using APC so PHP is in control of it's own processes, not FastCGI. Also, I have the webroot set as: /var/www/html And the fcgi-bin inside: /var/www/html/fcgi-bin First off here is the apache error_log: [Fri Jan 07 10:22:39 2011] [error] [client 50.16.222.82] (4)Interrupted system call: FastCGI: comm with server "/var/www/html/fcgi-bin/php.fcgi" aborted: select() failed, referer: http://www.domain.com/ I also ran strace on the 'fcgi-pm' process. Here is a snip from the trace around the time it bombs out: 21725 gettimeofday({1294420603, 14360}, NULL) = 0 21725 read(14, "C /var/www/html/fcgi-bin/php.fcgi - - 6503 38*", 16384) = 46 21725 alarm(131) = 0 21725 select(15, [14], NULL, NULL, NULL) = 1 (in [14]) 21725 alarm(0) = 131 21725 gettimeofday({1294420603, 96595}, NULL) = 0 21725 read(14, "C /var/www/html/fcgi-bin/php.fcgi - - 6154 23*C /var/www/html/fcgi-bin/php.fcgi - - 6483 28*", 16384) = 92 21725 alarm(131) = 0 21725 select(15, [14], NULL, NULL, NULL) = 1 (in [14]) 21725 alarm(0) = 131 21725 gettimeofday({1294420603, 270744}, NULL) = 0 21725 read(14, "C /var/www/html/fcgi-bin/php.fcgi - - 5741 38*", 16384) = 46 21725 alarm(131) = 0 21725 select(15, [14], NULL, NULL, NULL) = 1 (in [14]) 21725 alarm(0) = 131 21725 gettimeofday({1294420603, 311502}, NULL) = 0 21725 read(14, "C /var/www/html/fcgi-bin/php.fcgi - - 6064 32*", 16384) = 46 21725 alarm(131) = 0 21725 select(15, [14], NULL, NULL, NULL) = 1 (in [14]) 21725 alarm(0) = 131 21725 gettimeofday({1294420603, 365598}, NULL) = 0 21725 read(14, "C /var/www/html/fcgi-bin/php.fcgi - - 6179 33*C /var/www/html/fcgi-bin/php.fcgi - - 5906 59*", 16384) = 92 21725 alarm(131) = 0 21725 select(15, [14], NULL, NULL, NULL) = 1 (in [14]) 21725 alarm(0) = 131 21725 gettimeofday({1294420603, 454405}, NULL) = 0 I noticed that the 'select()' seems to stay the same regardless, however the read() changes its return from 46 to some other number while it is bombing out. Has anyone seen anything like this. Could this be some sort of file locking? Thanks, Ben

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• 3 Servers, is this is a cluster?

  - by Andy Barlow

  Hello, At the moment I have one Ubuntu server, 9.10, running with a simple Samba share, a mail server, DNS server and DHCP server. Mostly its just there for file sharing and email server. I also have 2 other servers that are exactly the same hardware and spec as the first, which have an rsync set up to retrieve the shared folders and backs them up. However, if the first server goes down, all of our shares disappear along with our mail and the system must be rebuilt. Also I tend to find if people are downloading a large amount from the file server, no-one can access there emails - especially in the morning when everyone is signing in at once. Would it be more beneficial for me to have all 3 servers, all running the same services, doing the same thing with some sort of cluster with load balancing? I'm not really sure where to begin looking, or how to go about such a setup where 3 servers are all identical, but perhaps one acts as the main load balancer?? If someone can point me in the right direction, or if this simply sounds like one of those Enterprise Cloud's that is now a default setup in Ubuntu Server 9.10+, then I'll go down that route. Cheers in advance. Andy

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• VMware and Windows Activation

  - by Peter M

  Yesterday I installed Slysoft's Virtual CloneDrive in order to mount an iso for some software installation on my host system (XP Pro SP3) This morning I fired up VMware and made a linked clone of an existing XP vm in order to do some software testing. This is the sort of thing that I do all the time, and the base XP vm that I clone was activated a long long time ago. The surprise today was that the newly cloned vm was no longer activated and XP cited major changes in hardware as the reason. I repeated the test with a full clone of the base system and got the same message. I then started up my base vm and it seemed to be activated, yet another vm (which I fully cloned from the base vm a long time ago) now started reporting that XP was not activated. At this point I guessed that Virtual DriveClone might have been the source of my hardware differences so I uninstalled it and rebooted. After this I made a new linked clone and full clone of the base vm and XP did not complain about not being activated. So I seem to be back to where I was before installing Virtual DriveClone with the exception that that one particular XP vm continues to complain about activation (even though 4 or 5 other XP vm's are fat and happy) Now to my questions: Why would adding Virtual CloneDrive to the host system affect XP activation on the vm's? From their point of view I would have thought that the environment had not changed as I had not enabled any new hard drives in their systems. Or is adding a hard drive to the host system enough to upset XP activation? Since this event, one of my fully cloned vm's is still reporting that XP is not activated even though I have removed Virtual CloneDrive. Is there anyway to convince XP that it is on the same system as yesterday? Or are my only options to do an activation or restore the vm from a previous backup?

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• Users database empty after Samba3 to Samba4 migration on different servers

  - by ouzmoutous

  I have to migrate a Samba 3 to a new Samba 4 server. My problem is that the database on the samba 3 server seems a bit empty. The secrets.dtb file is only 20K whereas the “pbedit -L |wc -l”command give me 16970 lines. On my Samba3 /var/lib/samba is 1,5M After I had migrate the databse (following instructions on http://dev.tranquil.it/index.php/SAMBA_-_Migration_Samba3_Samba4), “pdbedit -L” command on the new server give me only : SAMBA4$, Administrator, dns-samba4, krbtgt and nobody. So I tried to create a VM with a Samba3. I added some users, done the same things I did for the migration and now I can see the users created on the VM. It’s like users on the Samba 3 server are in a sort of cache. I already migrate the /etc/{passwd,shadow,group} files and I can see users with the “getent passwd” command. Any ideas why my users are present when I use pdbedit but the database is so empty ? The global part of my smb.conf on the Samba 3 server : [global] workgroup = INTERNET netbios name = PDC-SMB3 server string = %h server interfaces = eth0 obey pam restrictions = Yes passdb backend = smbpasswd passwd program = /usr/bin/passwd %u passwd chat = *new* %n\n *Re* %n\n *pa* username map = /etc/samba/smbusers unix password sync = Yes syslog = 0 log file = /var/log/samba/log.%U max log size = 1000 socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 add user script = /usr/sbin/useradd -s /bin/false -m '%u' -g users delete user script = /usr/sbin/userdel -r '%u' add group script = /usr/sbin/groupadd '%g' delete group script = /usr/sbin/groupdel '%g' add user to group script = /usr/sbin/usermod -G '%g' '%u' add machine script = /usr/sbin/useradd -s /bin/false -d /dev/null '%u' -g machines logon script = logon.cmd logon home = \\$L\%U domain logons = Yes os level = 255 preferred master = Yes local master = Yes domain master = Yes dns proxy = No ldap ssl = no panic action = /usr/share/samba/panic-action %d invalid users = root admin users = admin, root, administrateur log level = 2

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• Multicast image restoration with adaptive speed

  - by Clinton Blackmore

  I'm curious to know if there are any tools for restoring disk images (or even transferring files) via multicast -- for any platform, especially if the project has source available -- where the multicast rate adjusts itself on the fly. On the Mac, all multicast solutions I am aware of (such as Deploy Studio, and NetRestore before it) make use of multicast ASR (apple software restore), which has one glaring deficiency -- you have to set the multicast speed before you start sending a disk image over the network, and that speed is locked in. Either your clients can keep up and restore, or they can't*. It seems to me that it must be possible for the multicast server to adjust the data rate, so you basically say "start sending this image", clients connect, and, if they can't keep up, they tell the server so it slows down. (Likewise, I'd expect the server to try speeding up if no client is having difficulties keeping up, and I'd expect to be able to cap that maximum throughput so that other network activities can go on without being resource starved.) So, what sort of tools are out there? For Linux? Windows? Is there something for the Mac I've overlooked. [It just kills me that it is true that, by the time you get multicast up and going at a good speed to restore a lab, you could've unicasted the data to all the computers and be done.] * There is a little leeway involved. I think individual clients can say, "I missed a little bit of data" and get it, and they can opt to listen in the next time the image is sent over the network, but on the whole, if they missed it the first go round, you have to image the machine again, and there is no time savings.

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