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• Small store infrastructure - where to begin?

  - by KevinM1

  It looks like my older brother is about to change jobs - from lawyer to shooting range proprietor - and since I'm the family 'computer guy' I have the task of coming up with and setting up the in-store equipment. Only problem, I don't know how to start or where to look. I'm a web programmer, not an IT specialist. To that end, I figured I should ask the pros. Users: 3 (myself, my brother, and his business partner) Equipment: 1 Windows (likely 7) desktop for POS software, 1 Windows desktop/laptop for backroom use (bookkeeping, etc.) Other: ?? I'm looking for a reliable and, well, idiot-proof way to handle backups. Neither my brother nor his business partner are tech savvy (A web browser, email, MS Word and Excel are about the extent of their knowledge), so I need something they can handle. On-site would be preferable to off-site, given my brother's hesitance to have sensitive business data be handled by an outside source. I'm also looking for a small on-site server. I estimate that, at most, only 2-3 users will need access. A linux solution would keep costs down, but I'm concerned about Windows <- linux interoperability. Would the store security cameras' storage be handled by the security company, or would we have to stream that data to our own server? I know from my own experience with personal security that the company gives/loans a recording device to the home owner, but I'm not sure about business security. I know this sounds like a shopping list, and it's pretty vague. I wish I could give more detail, but between my own ignorance and things not being 100% nailed down on the business end, I'm a bit stuck. At the very least I'd like a nudge - links on a place to start, what to look for, things I need to think about, etc. - for this endeavor. Thanks.

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• Why do I have to log into hotmail twice?

  - by Tony Lee

  I just recently noticed I have to attempt a login into hotmail twice before it succeeds. Although I'm using Google Chrome (3.0.195.21), the symptoms are well described in a Mozilla thread. In short, I'm told: The e-mail address or password is incorrect. Please try again. The thread on mozilla's site that supposed to describe the latest details (and the 1st hit on google when I search for "hotmail login twice") requires an account to read so I'm hoping someone here has a good synopsis of what the cause is. I normally start at hotmail.com, which redirects to login.live.com/.... I can login by starting at mail.live.com, using IE8 or attempting a 2nd login. Oddly, if I start at login.live.com Chrome tells me there is a redirect loop. Does anyone know or have a public link to the root cause of the double login? (it is a hotmail account I'm login into) EDIT - Caused by my 'restricting how 3rd parties can use cookies'. If I allow all cookies, it works first time.

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• Control Panel as menu includes a blank item

  - by Matthew Ferreira

  When viewed as a menu attached to the Start Menu in Windows 7 Ultimate x64, the Control Panel contains a blank item. It looks like this: This item cannot be deleted or removed. I also cannot create a shortcut to it. No error message is displayed, instead simply nothing happens. I've tried using Shell Object Editor (using Run as Administrator) to find out if there is an errant entry on the Control Panel, but many entries (almost two dozen) are blank. There are several valid entries as well. I've looked through the registry and through C:\Windows, \system32, and \SysWOW64 but have had no success. I looked at this question, but I am not using Windows XP and thus have no option to use Tweak UI's Rebuild Icons function. Please note that this is no empty entry in the Control Panel when opened normally, only when attached to the Start Menu as a menu. I have compared the list of entries on the attached menu to the normal Control Panel and other than the blank entry, they are exactly the same. Nothing is missing from one or the other. I've also compared the menu and the normal view to reference images and lists of Control Panel items and have found no irregularities. Is anyone familiar with this problem or know of a solution? I've performed virus and malware scans and found nothing. I've used CCleaner with no change. Nothing with Shell Object Editor. Nothing with Registry Editor. Certainly someone here knows how to fix this. My only guess is the many blank entries visible in Shell Object Editor, but I am reluctant to delete that many items without further analysis and guidance. I appreciate your time and consideration.

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• Does MySQL have some kind of DoS protection or per-user query limit?

  - by Ghostrider

  I'm a bit at a loss. I'm running a MySQL database that's roughly 1GB data in indices combined on a dedicated Linux server. DB version is '5.0.89-community'. Configuration is controlled via cPanel. PHP actually runs elsewhere on a shared hosting. IP addresses are static and don't change. Access from remote IP address is properly configured. Website gets around 10K hits per day with each hit generating a a database query. Some of these queries are expensive (~1 sec execution time). All is fine and well until at some point DB server starts refusing connections from the client, claiming that specific user can't access the server from that IP. Resetting the server will always fix the problem for a day or two and then the same thing happens. There are some other DBs on that server, some of which are hit pretty hard on occasion but constantnly. One of the apps maintains several persistent connections since it does couple of updates per minute. Though I don't think it's related. What's driving me mad is that I can't figure out why server would start refusing connections. There is nothing in the logs. This server is a hosted dedicated server so hosting company created the OS image and I didn't write or go over every line of configuration. I'd do it but I'm at a loss as to where start looking. Any advice is appreciated.

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• How do I upgrade Windows Server 2008 R2 Standard (OEM Key) to Enterprise (MSDN Key) using DISM?

  - by Tom Crane

  (Originally asked as After upgrading to 2008 R2 Enterprise and installing more RAM, Windows can only see 4.00 GB but now I know what the question really is...) My Dell server came preinstalled with 2008 R2 Standard. I upgraded to Enterprise to take advantage of more than 32GB RAM. This server is purely for dev and testing, so I want to use my MSDN product key for the upgrade. I originally tried to uprade using the MSDN Enterprise key, but it wouldn't have it: dism /online /Set-Edition:ServerEnterprise /ProductKey:[MSDN key] => Error DISM DISM Transmog Provider: PID=5728 Product key is keyed to [], but user requested transmog to [ServerEnterprise] - CTransmogManager::ValidateTransmogrify I tried several things, including changing the current product key to the MSDN one. Eventually I used a KMS generic key which can be found in several technet forum posts. dism /online /Set-Edition:ServerEnterprise /ProductKey:[KMS Generic Key] ... and this appeared to work. I then changed the product key again (using the control panel) to the MSDN key, thinking that was the end of the matter. Only later when tried to start up VMs did I realise I only had 4GB of usable RAM. I didn't make the connection with the licensing changes at this point and went off on a wild goose chase of BIOS settings, memory configurations and the like. Only later when I saw this... http://social.technet.microsoft.com/Forums/en/winserverTS/thread/6debc586-0977-4731-b418-ca1edb34fe8b ...did I make the connection and reapply the KMS Generic key - which gave me all the RAM back. But now I have a system that isn't properly licensed, presumably I won't be able to activate it as it is, so I've got 2 days to enjoy it. With the MSDN key applied, only 4GB RAM is usable. Is there a way round this without a) rebuilding the server from scratch with the MSDN key from the start or b) buying a retail Enterprise license

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• Why does Internet Explorer sometimes fail to connect to anything until I restart it?

  - by cletus

  IE has an annoying problem on my PC (XP SP3). I start it and try to go to Google (for example) and it'll sit there saying "Connecting" but nothing will happen and it doesn't matter how many times I try, it won't connect to anything. I discovered that if I kill IE and restart it then it might start working (and then it'll work every time). It might takes 3-4 restarts (of IE, not the PC) to get a working IE. Now I wouldn't normally care about this since I use Chrome but a lot of things use IE by default like Windows Update and the online help in Office 2003 so I would like to fix it. Interestingly, my work laptop, which is running Windows 7 RC 64-bit, has exactly the same problem (completely different network and everything). I'm utterly convinced it's not a network or hardware problem but some software problem. Edit: More info. It's IE8; No add-ons; Automatically detect settings is not enabled. It is set to "Never dial a connection".

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• What could cause an 101 Error in WAMP under Windows 7 ?

  - by Brayn

  Hey, I'be been using WAMP for local development for quite a while now but lately I've been getting an Error 101 message when I browse localhost sites. It's possible for this to have appeared after the last WAMP update but I'm not 100% sure on this. If I try again and again, after several page refreshes it works but it's really annoying! The exact error message is: Error 101 (net::ERR_CONNECTION_RESET): Unknown error. This is my configuration: OS: Windows 7 Apache: 2.2.11 PHP: 5.2.9-2 WAMP: 2.0 Also the local scripts connect to a remote MySQL server, they don't use the local MySQL(I don't know if it matters, just though I let you know). I've been looking into the apache logs and I've found the following. It seems that the apache server keeps restarting and I can't figure why: [Wed Oct 14 13:52:30 2009] [notice] Parent: child process exited with status 255 -- Restarting. [Wed Oct 14 13:52:30 2009] [notice] Apache/2.2.11 (Win32) PHP/5.2.9-2 configured -- resuming normal operations [Wed Oct 14 13:52:30 2009] [notice] Server built: Dec 10 2008 00:10:06 [Wed Oct 14 13:52:30 2009] [notice] Parent: Created child process 6784 [Wed Oct 14 13:52:31 2009] [notice] Child 6784: Child process is running [Wed Oct 14 13:52:31 2009] [notice] Child 6784: Acquired the start mutex. [Wed Oct 14 13:52:31 2009] [notice] Child 6784: Starting 64 worker threads. [Wed Oct 14 13:52:31 2009] [notice] Child 6784: Starting thread to listen on port 80. [Wed Oct 14 13:52:32 2009] [notice] Parent: child process exited with status 255 -- Restarting. [Wed Oct 14 13:52:33 2009] [notice] Apache/2.2.11 (Win32) PHP/5.2.9-2 configured -- resuming normal operations [Wed Oct 14 13:52:33 2009] [notice] Server built: Dec 10 2008 00:10:06 [Wed Oct 14 13:52:33 2009] [notice] Parent: Created child process 3572 [Wed Oct 14 13:52:33 2009] [notice] Child 3572: Child process is running [Wed Oct 14 13:52:33 2009] [notice] Child 3572: Acquired the start mutex. [Wed Oct 14 13:52:33 2009] [notice] Child 3572: Starting 64 worker threads. [Wed Oct 14 13:52:33 2009] [notice] Child 3572: Starting thread to listen on port 80. Also I've checked Windows Firewall and disabled any other protection that I have on this computer with no improvement. Thanks!

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• Calling Excel from PHP 5 through COM fails on Windows 7 when Apache started through Task Planner

  - by Stefan Pantke

  I currently write an application, which controls Excel through COM: The app creates a COM-based Excel instance, opens some XLS files and reads their contents. Scenario I On Windows 7, I start Apache and mySQL using xmapp-control with system administrator rights. All works as expected. The PHP-based controller script interacts with Excel as expected. Scenario II A problem appears, if I start Apache and mySQL as 'background jobs'. Here is how: I created two jobs using Windows 7 Task Planner. One runs apache_start.bat, the other runs mysql_start.bat. Both tasks run as SYSTEM with elevated privileges when Windows 7 boots. Apache and mySQL work as expected. Specifically, Apache serves HTTP request from clients and PHP is able to talk to mySQL. When I call the PHP controller, which calls and interacts with Excel using COM, I do receive an error. The error seems to come from Excel [not COM itself] and reads like this: Excel can't read the XLS-file Excel failed to save the file due to an ill-name worksheet Interestingly, during the first run of the PHP-based controller script, it takes a few seconds to render the error message. Each subsequent run immediately renders the error message. Windows system logs didn't show a single problem report entry. Note, that the PHP program and the Apache instance didn't change - except the way Apache was started. At least the PHP controller script is perfectly able to read the file-system, since it provides the pathes to the XLS-file through scandir() of a certain directory. Concurrency issues can't be the cause of the problem. A single instance of the specific PHP controller interacts with Excel. Question Could someone provide details, why this happens?

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• OpenVZ with bridged interfaces and VLAN

  - by Deimosfr

  Hi, I've got a problem with OpenVZ with bridged VLAN. Here is my configuration: +------+ +-------+ +-----------+ +---------+ br0 |VE101 | | | | OpenBSD |----->| Debian |------->| | | WAN |--->| Router | | OpenVZ | +------+ | | | Firewall |----->| br0 br1 | br1 +------+ +-------+ +-----------+ +---------+------->|VE102 | |br0 | | |VLAN br0.110 +------+ v +---------+ |VE103.110| +---------+ I can't make VLAN work on br0 (br0.110) and I would like to understand why. I don't have any switch so no problem with unmanageable switch. I've configured a VLAN interface on OpenBSD in /etc/hostname.vlan110: inet 192.168.110.254 255.255.255.0 NONE vlan 110 vlandev sis1 And it seems to be working fine. I've also adapted my PF configuration to work with VLAN but I don't see any incoming traffic. On my Debian Lenny, here is my interfaces configuration : # The loopback network interface auto lo iface lo inet loopback # br0 auto br0 iface br0 inet static address 192.168.100.1 netmask 255.255.255.0 gateway 192.168.100.254 network 192.168.100.0 broadcast 192.168.100.255 bridge_ports eth0 bridge_fd 9 bridge_hello 2 bridge_maxage 12 bridge_stp off # VLAN 110 auto br0.110 iface br0.110 inet static address 192.168.110.1 netmask 255.255.255.0 network 192.168.110.0 gateway 192.168.110.254 broadcast 192.168.110.255 pre-up vconfig add br0 110 post-down vconfig rem br0.110 It looks OK, but when I start my VE, here is the message: ... Configure veth devices: veth103.0 Adding interface veth103.0 to bridge br0.110 on CT0 for VE103 can't add veth103.0 to bridge br0.110: Operation not supported VE start in progress... So I've got one error here. I've followed this documentation http://wiki.openvz.org/VLAN but it doesn't work. I've certainly missed something but I don't know why. Someone could help me please? Thanks

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• configuring apache with mod_mono for .net app

  - by Mystere Man

  I'm having a huge problem getting mod_mono and apache configured to work correctly. I've had this working at one time, but I can't seem to figure out where i'm going wrong. I'm using mono-server4. I'm trying to use a seperate port from the main website. So I have in /etc/apache2/sites-available (with a link from sites-enabled) a vhost configuration that looks like this: <VirtualHost *:9999> ServerName XXX ServerAdmin web-admin@XXX DocumentRoot /var/xxx MonoServerPath XXX "/usr/bin/mod-mono-server4" MonoDebug XXX true MonoSetEnv XXX MONO_IOMAP=all MonoApplications XXX "/:/var/xxx" <Location "/"> Allow from all Order allow,deny MonoSetServerAlias XXX SetHandler mono SetOutputFilter DEFLATE SetEnvIfNoCase Request_URI "\.(?:gif|jpe?g|png)$" no-gzip dont-vary </Location> <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE text/html text/plain text/xml text/javascript </IfModule> </VirtualHost> I used mono-server4-admin to create the application mono-server4-admin --path=/var/xxx --app=/XXX --port=9999 When i start apache, it gives the error: Syntax error on line 13 of /etc/apache2/sites-enabled/xxx: Server alias 'XXX, not found. This corresponds with the MonoSetServerAlias statement. So I commented it out, and when I do that apache starts. However, when I try to access the site, I get a 500 error. The access log indicates that it's trying to access the app on port 80, rather than 9999. I'm not sure what the problem is here. Can anyone help me get figure out where I went wrong? My mono-server4-hosts.conf contains this: # start /etc/mono-server4/conf.d/RMRSite/10_XXX Alias /XXX "/var/xxx" AddMonoApplications default "/XXX:/var/xxx" <Directory /var/xxx> SetHandler mono <IfModule mod_dir.c> DirectoryIndex index.aspx </IfModule> </Directory> # end /etc/mono-server4/conf.d/XXX/10_XXX Also, my /etc/mono-server4/conf.d/XXX/10_XXX contains this: This is the configuration file for the XXX virtualhost path = /var/xxx alias = /XXX vhost = localhost port = 9999

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• Incorrect durations mp4 file created by ffmpeg (avconv)

  - by Ruslan Sharipov

  Example usage: avconv -i rtmp://maps.lo.ufanet.ru/live/10e227922b473e91f37474fa084107af -vcodec copy -an -sn -map 0 -f segment -segment_format mp4 -segment_time 60 -y %05d.mp4 avconv version 0.8.3-6:0.8.3-1+b1, Copyright (c) 2000-2012 the Libav developers built on Jun 15 2012 13:54:35 with gcc 4.7.0 HandShake: client signature does not match! Metadata: height 480.00 remote_addr: sdp_session {sdp_session,0, {sdp_o,"-","1289703354974145","1289703354974145",inet4, "10.1.12.99"}, "Media Presentation", {inet4,"0.0.0.0"}, {0,0}, [{"control","*"},{"range","npt=0.0 start 30400239.52 timeshift_duration 319250.58 timeshift_size 120000.00 width 640.00 [flv @ 0x1d36a40] Estimating duration from bitrate, this may be inaccurate Input #0, flv, from 'rtmp://maps.lo.ufanet.ru/live/10e227922b473e91f37474fa084107af': Duration: N/A, start: 0.000000, bitrate: N/A Stream #0.0: Video: h264 (Baseline), yuvj420p, 640x480 [PAR 1:1 DAR 4:3], 1k tbr, 1k tbn, 2k tbc Output #0, segment, to '%05d.mp4': Metadata: encoder : Lavf53.21.0 Stream #0.0: Video: libx264, yuvj420p, 640x480 [PAR 1:1 DAR 4:3], q=2-31, 1k tbn, 1k tbc Stream mapping: Stream #0:0 -> #0:0 (copy) Press ctrl-c to stop encoding ^Cframe= 9566 fps= 36 q=-1.0 Lsize= -0kB time=318.25 bitrate= -0.0kbits/s video:30348kB audio:0kB global headers:0kB muxing overhead -100.000071% Received signal 2: terminating. Result: serafim@yard:~/video2$ ls 00000.mp4 00001.mp4 00002.mp4 00003.mp4 00004.mp4 00005.mp4 Now try to play the files in the player, such as VLC. And that's what we get: the first fragment (00000.mp4) played well, no problems, but the second (00001.mp4 and beyond) starts the bug manifests itself, namely the file 00001.mp4 first 60 seconds black screen, but since 61 seconds starts playing the video. Attachments: https://dl.dropbox.com/u/760901/rtmp_and_mp4.zip How to get rid of the delay with black screen at the beginning of the segments? Maybe ffmpeg to pass parameters, or third-party software is able to correct the obtained segments mp4?

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• In Stud, which Private RSA Key should be concatenated in the x509 SSL certificate pem file to avoid "self-signed" browser warning?

  - by Aaron

  I'm trying to implement Stud as an SSL termination point before HAProxy as a proof of concept for WebSockets routing. My domain registrar Gandi.net offers free 1-year SSL certs. Through OpenSSL, I generated a CSR which gave me two files: domain.key domain.csr I gave domain.csr to my trusted authority and they gave me two files: domain.cert GandiStandardSSLCA.pem (I think this is referred to as the intermediary cert?) This is where I encountered friction: Stud, which uses OpenSSL, expects there to be an "rsa private key" in the "pem-file" - which it describes as "SSL x509 certificate file. REQUIRED." If I add the domain.key to the bottom of Stud's pem-file, Stud will start but I receive the browser warning saying "The certificate is self-signed." If I omit the domain.key Stud will not start and throws an error triggered by an OpenSSL function that appears intended to determine whether or not my "pem-file" contains an "RSA Private Key". At this point I cannot determine whether the problem is: Free SSL cert will always be self-signed and will always cause browser to present warning I'm just not using Stud correctly I'm using the wrong "RSA private key" The CA domain cert, the intermediary cert, and the private key are in the wrong order.

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• Ubuntu - No gnome-panels, no right-click, no internet, no hotkeys

  - by Darthfett

  Hey guys, I've been using Ubuntu (Maverick 10.10) on my desktop (ATI Radeon 5830) for about 3 weeks now, but all of a sudden I am unable to even use my computer. As soon as I start up, I see my desktop, with icons, but I don't see any gnome-panels, and I'm unable to get any options if I right-click. I can start programs by double clicking them. I also cannot get an internet connection. I've tried restarting gnome-panel by killing it, using Ctrl+Alt+5 to switch to a terminal (I don't have a shortcut to one on my desktop, and no hotkeys will work), but no luck. Restarting my computer has no effect upon this (I have to manually cut the power, since I don't know the terminal command). As far as I know, I have not made any changes, and I've never had any problems in the past. This started when I was playing Minecraft, but my internet crapped out, and no amount of re-trying the connection would work. I know it was my computer, as my brother's was working fine in the other room. Any clues as to what's going on? I'm more than willing to troubleshoot.

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• Word 2010, Multiple Columns, Vertical center one column only

  - by Nancy N Jones

  I am creating a document with two columns in Microsoft Word 2010. I want the first column to be centered vertically. I want the second column to be on the same page and the vertical placement to be from the top. I highlight my text in the first column that I want centered vertically, then go to Page Layout Margins Custom Margins Layout, you can choose to center the vertical alignment. I have choosen the "Section Start" to be "Column" and also tried "Continuous." In all cases it always shifts all of my second column information to a new page. I don't want my second column text to be on a new page, I want it to be on the same page and vertically aligned from the top--not the center. Am I understanding the functionality of the Section Start on the Layout tab correctly? Maybe the page layout isn't the correct formatting to use. What I am really doing is formatting columns. I haven't found anywhere to format the columns for this. Am I missing some important column formatting features? I know that I can use the paragraph formatting and add space above the first line of text to make it look like it is centered vertically. However, this is a template for a master document and will be changed frequently. I really would like the first column text to be automatically formatted to be centered vertically without having to go in and manually change the space above the paragraph every time. Your assistance would be greatly appreciated.

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• Linux wireless disconnect every 20 minutes

  - by james

  My laptop uses CentOS 6.3 with kernel 2.6.32-279.el6.x86_64. My wireless adaptor is Intel Corporation Centrino Wireless-N 1000. My wireless connection always get off after about 20 minutes. The network applet shows the connection is still on with good signal strength, but I just cannot load any web pages even the configuration page of the wireless router. The problem will continue until I disable and reconnect the wireless. Other devices like my cell phone uses the same wireless network without the problem. Even yesterday I'm using the same laptop with Fedora 17 without this problem. I also searched the internet and someone said running services NetworkManager and network simultaneously may be a problem. But I cannot stop any one of them because: if I stop network and start NetworkManager, the network service will start automatically; if I stop NetworkManager and run network, it says "Device does not seem to be present, delaying initialization." when trying to bringing on the wireless. What shall I do to get rid of the problem? Thank you very much!

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• Reading log files from web application

  - by Egorinsk

  I want to write a small PHP application for monitoring logs on a Debian server, including syslog logs and Apache/PHP messages. The problem here is that Apache user (www-data) has no access to /var/log directory. What would be the best way to grant an access to logs for PHP application? Let's assume that log files can be really large, like hundreds of megabytes. I have some ideas: Write a shell script that would be run via sudo and tail last 512 Kb of log into a separate file that can be read by application - that's ineffective, because of forking a new process and having to read data twice Add www-data to adm group (that can read logs) - that's insecure Start a PHP process via cron every minute to read logs — that's not very good, because it doesn't allow real-time monitoring. Also, this script will be started even when I don't read logs, and consume CPU time (server is in the cloud, and I'll have to pay for it) Create a hardlink for all log files with lowered permissions - I guess, that won't work because logrotate could recreate log files and they'll change inode number. Start a separate nginx/Apache server under privileged user that may read logs. Maybe anyone got a better solution?

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• Installing and running two postgresql versions on different ports (or two instances of same server)

  - by Andrius

  I have postgresql 9.1 installed on my machine (Ubuntu). I need another postgresql server that would run next to the old one. Exact version does not matter, but I'm thinking of using 9.2 version. How could I properly install and run another postgresql version without screwing old one (like upgrading). So those versions would run independently on different ports. Old one on 5432 and new one on 5433 for example. The reason I need this is for two OpenERP versions databases. If I run two OpenERP servers (with different versions) on single postgresql port, it crashes because new OpenERP version detects old versions database and tries to run it, but it crashes because it uses another schemes. P.S or maybe I could just run same postgresql server on two ports? Update So far I tried this: /usr/lib/postgresql/9.1/bin/pg_ctl initdb -D main2 It created new cluster. I changed port to 5433 in new clusters directory postgresql.conf file. Then ran this: /usr/lib/postgresql/9.1/bin/pg_ctl -D main2 -l logfile start I got response server starting. But when I tried to enter new cluster's template database with: psql template1 -p 5433 I got this error: psql: could not connect to server: No such file or directory Is the server running locally and accepting connections on Unix domain socket "/var/run/postgresql/.s.PGSQL.5433"? Also now when I try to stop server with: /usr/lib/postgresql/9.1/bin/pg_ctl -D main2 -l logfile start I get this error: pg_ctl: PID file "main2/postmaster.pid" does not exist Is server running? So I don't understand if server is running and what I'm missing here? Update Found what was wrong. Stupid me. I didn't notice that when I changed port in .conf file, that line was commented already. So actually I didn't change anything first time, but thought I did and it used default 5432 port.

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• Router drops internet connection if I connect an additional pc

  - by BluePerry

  Hey, I'm using a SMC2804WBRP-G router connected to my ADSL-modem. Usually there are two computers connected to this router: a win7 ultimate desktop(wired) and a macbook air (wireless). Both working absolutely fine and never caused any connection drops as far as I know. A new room mate moved in last month and each time she starts up her win7 home laptop the router looses the internet connection. The laptop is on a wired connection. The first time she connected to my router, the connection dropped every 2 mins. To find out whats wrong with her machine I disabled all unnecessary services etc. besides the anti virus software. That helped to eliminate almost all of those periodic connection drops. But the start up drop remained and I've got the feeling that the router is still loosing connection from time to time. I haven't had the time to find out what service caused the periodic drops. But I'm more concerned about is that start up drop. Can anyone point me in the right direction to look for the problem? I would be very thankful for any hints or tips!

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• Fresh 12.04 Install - mySQL not starting

  - by Lee Armstrong

  I have a freshly installed Ubuntu 12.04 x64 server and I installed Percona server from their official repositories. Trouble is it will not start! mysql-error.log shows nothing obvious. 121129 12:16:54 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql/ 121129 12:16:54 [Note] Plugin 'FEDERATED' is disabled. 121129 12:16:54 InnoDB: The InnoDB memory heap is disabled 121129 12:16:54 InnoDB: Mutexes and rw_locks use GCC atomic builtins 121129 12:16:54 InnoDB: Compressed tables use zlib 1.2.3 121129 12:16:54 InnoDB: Using Linux native AIO 121129 12:16:54 InnoDB: Initializing buffer pool, size = 12.0G 121129 12:16:54 InnoDB: Completed initialization of buffer pool 121129 12:16:54 InnoDB: highest supported file format is Barracuda. 121129 12:16:55 InnoDB: Waiting for the background threads to start 121129 12:16:56 Percona XtraDB (http://www.percona.com) 1.1.8-rel29.1 started; log sequence number 1598476 121129 12:16:56 [Note] Server hostname (bind-address): '0.0.0.0'; port: 3306 121129 12:16:56 [Note] - '0.0.0.0' resolves to '0.0.0.0'; 121129 12:16:56 [Note] Server socket created on IP: '0.0.0.0'. 121129 12:16:56 [Note] Event Scheduler: Loaded 0 events 121129 12:16:56 [Note] /usr/sbin/mysqld: ready for connections. Version: '5.5.28-29.1-log' socket: '/var/run/mysqld/mysql.sock' port: 3306 Percona Server (GPL), Release 29.1 121129 12:16:56 [Note] Event Scheduler: scheduler thread started with id 1 And the syslog shows... Nov 29 12:17:07 V-PF-SQL1 /etc/init.d/mysql[2206]: 0 processes alive and '/usr/bin/mysqladmin --defaults-file=/etc/mysql/debian.cnf ping' resulted in Nov 29 12:17:07 V-PF-SQL1 /etc/init.d/mysql[2206]: #007/usr/bin/mysqladmin: connect to server at 'localhost' failed Nov 29 12:17:07 V-PF-SQL1 /etc/init.d/mysql[2206]: error: 'Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)' Nov 29 12:17:07 V-PF-SQL1 /etc/init.d/mysql[2206]: Check that mysqld is running and that the socket: '/var/run/mysqld/mysqld.sock' exists! Nov 29 12:17:07 V-PF-SQL1 /etc/init.d/mysql[2206]: The socket file is being created and I can access the server NOT using the socket using mysql -h 127.0.0.1 -P 3306 -u root --pPASSWORD

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• h264 inside FLV container vs. MP4 container?

  - by Gotys

  I am developing a tube site, and currently having issues with h264 format . By looking at youtube, I noticed they are putting their hi-def videos into mp4 container, so logically I did the same. Next, I installed mod_h264_streaming for lighttpd to make streaming and timeline-scrubbing work. Problem is, that large files (500mb+ at somewhat high resolution) take for EVER to even start buffering ( I read the flowplayer or other flash players need to download metadata first) . I moved the xmov atom to the front of the file with MP4Box (i tried qt-quickstart too) , and the problem didn't go away. Next I read online I need to interleave audio tracks, so I did that too. No change in slowness. So I tried putting the same exact h264 movie into an FLV container, and the playback buffering starts almost instantly - no slowness. So what am I missing here? Why would I choose MP4 container with mod_264_streaming module , which seems super-slow over a regular FLV container with lighttpd's built-in mod_flv_streaming ? Obviously many websites pick mp4 container , but I fail to understand why ? And as a side question - I tried using HTML5's VIDEO tag to try the same h264 MP4 movie, and the scrubbing is LIGHTING FAST! I looked into lighttpd's log file, and i noticed taht Flash Players append video.mp4?start=234 each time timeline is scrubbed, wheres HTML5's video tag does no such thing . Is this some sort of limitations of Flash ? Why Can't flash streaming be same fast as HTML5 streaming? Thanks to ALL who can help. I very much appreciate this community.

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• Borked ubuntu uninstall - need to delete boot partition (i think)

  - by Max Williams

  I just got a new pc laptop with windows 7 and wanted to install Ubuntu on it. Which i did, no problem there, by downloading the installer, burning it to dvd then booting off the dvd and installing. Then, i realised that the new Ubuntu 12.04 uses the Unity desktop, which i immediately disliked, and after some research, began to hate. So, i decided (after a little googling) to install Linux Mint instead. So, thinking i'd better start from scratch, i went to the Windows 7 disk manager and wiped the Ubuntu partition that had been created. Now, when i start up, i get an error from grub, the ubuntu boot manager: error: unknown filesystem grub rescue> _ and a blinking cursor where i can enter commands. I suspect that what i've done is deleted the main ubuntu partition but NOT deleted another partition which is a boot partition, or something like that? Can anyone tell me how i can rescue or unbork this? I'd like to either a) get back to my original windows-only setup OR b) install linux mint off dvd (which i have), into the empty partition, fixing any grub confusion in the process. Any suggestions? Thanks, max BTW please don't answer if you're just going to tell me to stick with 12.04, or install a different distro or something. I definitely want Mint and just want to fix this mess - thanks :)

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• Small business server 2011 standard - applications randomly closing for remote desktop users

  - by Ash King

  Small business server 2011 standard - applications randomly closing for remote desktop users I have an issue where when you are connected through remote desktop (doesn't matter whether you have administrative rights or not). What happens: Any application that you run (outlook, word, excel, notepad, cmd etc..) the application will randomly crash and produce an error as such: Faulting application name: EXCEL.EXE, version: 14.0.6112.5000, time stamp: 0x4e9b2b30 Faulting module name: ieframe.dll, version: 8.0.7600.16930, time stamp: 0x4eeb0187 Exception code: 0xc0000005 Fault offset: 0x0000000000131e03 Faulting process id: 0x3d4c Faulting application start time: 0x01cecf3491388e43 Faulting application path: C:\Program Files\Microsoft Office\Office14\EXCEL.EXE Faulting module path: C:\Windows\System32\ieframe.dll Report Id: 1c06abd4-3b2b-11e3-bd8d-001999b270e9 I noticed the ieframe.dll, but its not constant for every application that crashes, e.g.: Faulting application name: OUTLOOK.EXE, version: 14.0.6109.5005, time stamp: 0x4e79b6c0 Faulting module name: PSTOREC.DLL_unloaded, version: 0.0.0.0, time stamp: 0x4a5be02a Exception code: 0xc0000005 Fault offset: 0x000007fef39c7158 Faulting process id: 0x43f8 Faulting application start time: 0x01cecf33fe5eec26 Faulting application path: C:\Program Files\Microsoft Office\Office14\OUTLOOK.EXE Faulting module path: PSTOREC.DLL Report Id: 0c0f5934-3b2b-11e3-bd8d-001999b270e9 I am unable to perform a sfc /scannow command due to the cmd.exe crashing as well.. I have performed a virus scan on the server which did originally pick up 5 viruses: riskware.tool.ck -> File riskware.tool.ck - > Memory Process trojan.agent.bdavgen -> File trojan.agent -> File HiJack.comsysapp -> Registry Data But after removing these and rebooting the machine we have had no luck Has anyone else ever come across this issue before? Also to elaborate it is happening as frequently as every minute.

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• Control Panel as menu includes a blank item

  - by Matthew Ferreira

  When viewed as a menu attached to the Start Menu in Windows 7 Ultimate x64, the Control Panel contains a blank item. It looks like this: This item cannot be deleted or removed. I also cannot create a shortcut to it. No error message is displayed, instead simply nothing happens. I've tried using Shell Object Editor (using Run as Administrator) to find out if there is an errant entry on the Control Panel, but many entries (almost two dozen) are blank. There are several valid entries as well. I've looked through the registry and through C:\Windows, \system32, and \SysWOW64 but have had no success. I looked at this question, but I am not using Windows XP and thus have no option to use Tweak UI's Rebuild Icons function. Please note that this is no empty entry in the Control Panel when opened normally, only when attached to the Start Menu as a menu. I have compared the list of entries on the attached menu to the normal Control Panel and other than the blank entry, they are exactly the same. Nothing is missing from one or the other. I've also compared the menu and the normal view to reference images and lists of Control Panel items and have found no irregularities. Is anyone familiar with this problem or know of a solution? I've performed virus and malware scans and found nothing. I've used CCleaner with no change. Nothing with Shell Object Editor. Nothing with Registry Editor. Certainly someone here knows how to fix this. My only guess is the many blank entries visible in Shell Object Editor, but I am reluctant to delete that many items without further analysis and guidance. I appreciate your time and consideration.

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• nginx not starting at reboot after gitlab installation

  - by Luis Masuelli

  I installed nginx (1.6) in ubuntu server (14.04). After that, I installed gitlab. I didn't realize it came with its own nginx. I uninstalled gitlab later. After installing gitlab, my first nginx began to never start at boot as a service. This means: If I hit sudo netstat -anp I don't see the corresponding entry in 0.0.0.0:80. If I hit sudo nginx -s reload and then sudo netstat -anp I see the corresponding entry I mentioned. I thought I could fixing it by doing: sudo update-rc.d nginx remove sudo update-rc.d nginx defaults After removing gitlab, but it did not help me (i.e. after reboot, nginx does not automatically start). I revised the /etc/init.d/nginx just to see that $DAEMON is still /usr/sbin/nginx. Question: What should I check to see the problem here (or: what could the problem be)? sudo nginx -s reload works with no problems at all.

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• Production deployment to EC2 with minimal downtime

  - by jensendarren

  I have a simple web application deployed on a large instance with EC2. I now want to deploy the latest code to this server but I want to do this in a way which minimizes downtime and is a smooth as possible for the end user. Here is my plan: Fire up another large instance Install all the software layers on that instance Restore and attach an EBS drive to the instance Deploy our latest production ready code on the new instance Run all tests (including manual testing of the application) (If tests pass) Put a "Site Under Maintenance" notice on the live site. Backup the EBS instance on the live site Detach the EBS instance from the new server and replace with the latest backup Use ec2-associate-address to move the IP address to the new instance Sit back and wait for traffic to start flowing though the new instance Terminate the old instance Does this seem like a good strategy? Are there any tutorials or books that might cover this topic? I have already read Cloud Application Architectures by George Reese, which is an excellent book, but does not cover deployment. Additionally, I know that there are tools that can help with this like RightScale or enStratus which I will use when I start using more than one instance.

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