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• Why do HTTP loopback connections not work on my subdomains?

  - by memeLab

  I have a shared hosting account at Jumba running Linux kernel 2.6.9-103.ELsmp (don't know if that helps) with cpanel 1.0 (RC1). I am using the WordPress plugin Backup Buddy, which requires HTTP loopback connections to monitor / complete backups. This works fine on memelab.com.au, but doesn't work at any subdomain (e.g.: staging.memelab.com.au). Is it possible to setup an A record or some such to remedy this? I'm aware of a workaround, (setting WP_ALTERNATE_CRON) but I find this unsatisfactory due to the messy URLs. BackupBuddy:_Frequent_Support_Issues#HTTP_Loopback_Connections_Disabled Here is the reply from my host: …as main domain have it's own separate DNS entry it have localhost entry which helps for looback connections where as subdomains don't have separate DNS zone, so it is not possible to create looback connections for it. I have cpanel access to the 'advanced zone editor' - is there anything tricky I can do there? maybe 127.0.0.2? (I remember reading that there were at least 8 available local IPs available on (some) Linuxes.) All the A records point to the server IP, with the exception of localhost.memelab.com.au which points to 127.0.0.1. I've just tried entering a new A record: localhost.itours.memelab.com.au pointing to 127.0.0.2. I still get the warning in Backup Buddy that loopback is not active, and Cpanel won't let me enter 127.0.0.1 (guess it doesn't work like that!) nslookup itours.memelab.com.au Server: 203.88.112.33 Address: 203.88.112.33#53 Non-authoritative answer: Name: itours.memelab.com.au Address: 117.55.224.177

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• How to set up simple VPN for secure Internet connections over unencrypted Wi-Fi on Windows?

  - by Senseful

  I'm looking for a solution similar to the one in this question, except that I don't have a linux computer. I have windows computers that could be set up to accept VPN connections. Preferably I want to set this up on either Windows Server 2003 or Windows XP. I'd like to connect different devices (e.g. iPhone, iPad, laptops, etc.) that are on open unsecure wireless networks (e.g. the one's you see at places like Starbucks) to this VPN to ensure that all my data is secure. I found an article that shows that you can enable VPN connections on Windows XP. After following those steps, though, I'm not sure what to do. Which ports do I open on my firewall? Which VPN settings do I use on my devices such as the iPhone? Do I use L2TP, PPTP, or IPSec? What's the difference between these? Are there any other steps missing in that tutorial? I'm hoping that since Windows has this built in feature, that it will be much simpler to set up rather than having to deal with setting up something such as OpenVPN. If I follow those settings and enable port forwarding on port 1723, and then use the following settings on the iPhone: PPTP (IP Address) RSA SecurID: Off Encryption Level: Auto Send All Traffic: On Proxy: Off It shows "Connecting..." then "Disconnecting..." and the following error message: VPN Configuration A connection could not be established to the PPP server. Try reconnecting. If the problem continues, verify your settings and contact your Administrator. I'm using a user account that I enabled privileges to in the VPN settings on the Windows machine.

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• Apache going straight to 100% mem usage on localhost

  - by Dennis Pedrie

  Hi, I'm running XAMPP on a OS X testing server... I'm the only person sending requests to the server. I've never messed with Apache config before, so I'm kinda without a paddle here. When I start Apache, I get ~10 httpd processes started, and 95% idle CPU. When I request a WordPress page, the CPU usage goes to 50%, and the page loads in about five seconds. It seems like once the page has finished loading, the CPU usage jumps to 100%, almost all of that httpd. A ton of processes get started, and they don't go away, and their CPU usage stays the same. I've changed the MaxRequestPerChild setting and so forth, but nothing seems to solve the problem. Even now, having not send any requests for about 15 minutes, the CPU usage is at 100%. Here's the applicable settings: Timeout 10 KeepAlive On MaxKeepAliveRequests 0 KeepAliveTimeout 3 <IfModule mpm_prefork_module> StartServers 5 MinSpareServers 0 MaxSpareServers 2 MaxClients 20 MaxRequestsPerChild 50 </IfModule> I had always thought that once the request was made, Apache killed the process. Is there anything I can do to bring down the CPU usage, or is this just something I'll have to deal with? Thanks for helping out an Apache idiot.

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• Windows 7 hangs after going into sleep a second time

  - by Brian Stephenson

  I've searched everywhere around Google and can't figure out why this is happening so I decide to ask here to see if anyone has a problem like this. Like it says in the title, whenever I sleep ONCE I'm able to wake the system, but going back to sleep again AFTER waking up for the first time results in it hanging on no input and no output, with the fan spinning as fast as possible and alot of heat being spewed out by the fan as well. I've tried various things like setting all USB Hub Root's to not get switched off for power saving, disabling USB selective suspend, disabling PCI-e link state power management, and even unplugging ALL USB devices and it wont wake up after the second attempt. And I've even waited up to a full hour of the CPU fan spinning loudly and it's still stuck trying to wake up. The only USB devices I use are a Microsoft USB Comfort Curve Keyboard 2000 (IntelliType Pro) and a generic HID compliant mouse from Creative model number OMC90S "CREATIVE MOUSE OPTICAL LITE". My other devices like external drives and controllers are unplugged when I'm not using them as having too many USB devices plugged in at a time causes a deadlock on almost all of the ports I have. Here's my system specifications (Most of these are from CPU-Z): Brand: Gateway DX4300-19 Mainboard: Gateway RS780 Chipset: AMD 780G Rev 00 Southbridge: AMD SB700 Rev 00 LPCIO: ITE IT8718 BIOS: American Megatrends Inc. ver P01-A4 09/15/2009 CPU: AMD Phenom II X4 810 at 2.60 GHz RAM: 8.0 GB DDR2 Dual Channel Ganged Mode at 400 MHz GPU: ATI Radeon HD3200 Graphics Intergrated - RS780 OS: Windows 7 Home Premium x64 OEM (Acer Group) HDD: WDC WD10EADS-22M2B0 1.0 TB (Western Digital Green Caviar) My BIOS has absolutely no control over how I setup the sleep mode to be either S1 or S3. So I can't check these settings or even change them. Hybrid sleep is also disabled, I can successfully go into hibernation and wake from hibernation but this is painfully slow due to a harddrive problem I'm having with this "Green Drive". (Hibernation takes over ~3 minutes to complete) Any help would be appreciated, thanks.

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• DNS Issue- Nameserver Issue

  - by Master-Man

  I setup new server on centos 5.3 and configure dns and hostnam using WHM. I also register my new nameservers with my domain registrar with ns1.example.com and ns2.example.com. But i am unable to ping hostname and NS. ping pc2.example.com or ping ns1.example.com I received the below email from server. IMPORTANT: Do not ignore this email. Your hostname (pc2.example.com) could not be resolved to an IP address. This means that /etc/hosts is not set up correctly, and/or there is no dns entry for pc2.example.com. Please be sure that the contents of /etc/hosts are configured correctly, and also that there is a correct 'A' entry for the domain in the zone file. Some or all of these problems can be caused by /etc/resolv.conf being setup incorrectly. Please check that file if you believe everything else is correct. You may be able to automatically correct this problem by using the 'Add an A entry for your hostname' option under 'Dns Functions' in your Web Host Manager. When I issue the command root@pc[~]# host pc2.example.com I receive the below error that Host pc2.example.com not found: 3(NXDOMAIN) I added A entries for hostname and Nameservers but nothing replies. Its almost more than 72 hours for setting & registering nameservers and dns configurations. thanks,

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• iptables configuration under ubuntu

  - by aioobe

  I'm following a tutorial on setting up a dns-tunnel. I've run into the following instruction: Now you need to enable forwarding on this server. I use iptables to implement masquerading. There are many HOWTOs about this (a simple one, for example). On Debian, the configuration file for iptables is in /var/lib/iptables/active. The relevant bit is: *nat :PREROUTING ACCEPT [6:1596] :POSTROUTING ACCEPT [1:76] :OUTPUT ACCEPT [1:76] -A POSTROUTING -s 10.0.0.0/8 -j MASQUERADE COMMIT Restart iptables: /etc/init.d/iptables restart The problem is that I don't have any /var/lib/iptables/active. (I'm on ubuntu.) How can I accomplish this? I suspect that I should just interact with the iptables command somehow but I have no clue what to write. Best would probably be if I could put the commands in a script somehow I suppose. (A side-note. If I execute a few iptables-commands it wont be there for ever, right? The rules will be discarded on reboot?)

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• How to access a port via OpenVpn only

  - by Andy M

  I've set up an openvpn server alongside an apache website that can only be accessed on port 8100 on the same machine. My /etc/openvpn/server.conf file looks like this: port 1194 proto tcp dev tun ca ./easy-rsa2/keys/ca.crt cert ./easy-rsa2/keys/server.crt key ./easy-rsa2/keys/server.key # This file should be kept secret dh ./easy-rsa2/keys/dh1024.pem # Diffie-Hellman parameter server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt # make sure clients can still connect to the internet push "redirect-gateway def1 bypass-dhcp" keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log verb 3 Now I tried to let only clients connected to the vpn network access the website on apache via port 8100. So I defined a few iptables rules: #!/bin/sh # My system IP/set ip address of server SERVER_IP="192.168.0.2" # Flushing all rules iptables -F iptables -X # Setting default filter policy iptables -P INPUT DROP iptables -P OUTPUT DROP iptables -P FORWARD DROP # Allow incoming access to port 8100 from OpenVPN 10.8.0.1 iptables -A INPUT -i tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A OUTPUT -o tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT # outgoing http iptables -A OUTPUT -o tun0 -p tcp --dport 80 -m state --state NEW,ESTABLISHED -j ACCEPT iptables -A INPUT -i tun0 -p tcp --sport 80 -m state --state ESTABLISHED -j ACCEPT Now when I connect to the server from my client computer and try to access the website on 192.168.0.2:8100, my browser can't open it. Will I have to forward traffic from tun0 to eth0? Or is there anything else I'm missing?

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• SFTP, Chroot problems on Redhat

  - by Curtis_w

  I'm having problems setting up sftp with a ChrootDirectory. I've done an equivalent setup on other distros, but for some reason I cannot get it to work on a Redhat AMI. The changes to my sshd_config file are: Subsystem sftp internal-sftp Match Group ftponly PasswordAuthentication yes X11Forwarding no ChrootDirectory %h ForceCommand internal-sftp AllowTcpForwarding no I have the concerned usere's homes at /home/user, owned by root. After connecting with a user in the ftponly group, I'm dropped into / without permissions for anything, and am unable to do anything. sftp bob@localhost Connecting to localhost... bob@localhost's password: sftp> pwd Remote working directory: / I can connect normally with users not in the ftponly group. openssh version 5.3 I've experimented with different permissions, as well as having users own their own home directory (gives a Write failed: Broken pipe error), and so far, nothing has seemed to work. I'm sure it's a permissions error, or something equally as trivial, but at this point my eyes are beginning to glaze over, and any help would be greatly appreciated. EDIT: James and Madhatter, thanks for clarifying. I was confused by chroot dropping me in /... just didn't think through it properly. I've added the appropriate directories and permissions to get read access. One other key part was enabling write access to chrooted homes: setsebool -P ssh_chroot_rw_homedirs on in order to get write access. I think I'm all set now. Thanks for the help.

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• Node js server not responding outside localhost centos

  - by David Martinez

  I'm running a basic express server from CentOS but for some reason it is not responding outside of localhost, I have tried everything I have found on google but nothing works so far. This is my express server: app.listen(3000,"0.0.0.0"); If I do curl http://localhost:3000/ in the server it works fine. If I curl to the ip of the server it doesn't work. I already changed my iptables num target prot opt source destination 1 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 2 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:80 3 ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:3000 There is currently a apache server running on port 80 with no problems. I also tried setting a VirtualHost on apache but it didn't work either: <VirtualHost *:80> ServerName SubDOmain.MyDomain.com ProxyRequests off <Proxy *> Order allow,deny Allow from all </Proxy> ProxyPass / http://localhost:3000/ ProxyPassReverse / http://localhost:3000/ ProxyPreserveHost on </VirtualHost> There is another virtual host working fine that redirects to another DocumentRoot. I'm running Node on root for testing purpose, but the node application owner is another user. All folders have 705 and files 664 Edit: I stopped apache and run my node app on port 80 and it working fine, I could access node app from my ip and domain.

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• Allowing non-admin users to unstick the print spooler

  - by Reafidy

  I currently have an issue where the print que is getting stuck on a central print server (windows server 2008). Using the "Clear all documents" function does not clear it and gets stuck too. I need non-admin users to be able to clear the print cue from there work stations. I have tried using the following winforms program which I created and allows a user to stop the print spooler, delete printer files in the "C:\Windows\System32\spool\PRINTERS folder" and then start the print spooler but this functionality requires the program to be runs as an administrator, how can I allow my normal users to execute this program without giving them admin privileges? Or is there another way I can allow normal user to clear the print que on the server? Imports System.ServiceProcess Public Class Form1 Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click ClearJammedPrinter() End Sub Public Sub ClearJammedPrinter() Dim tspTimeOut As TimeSpan = New TimeSpan(0, 0, 5) Dim controllerStatus As ServiceControllerStatus = ServiceController1.Status Try If ServiceController1.Status <> ServiceProcess.ServiceControllerStatus.Stopped Then ServiceController1.Stop() End If Try ServiceController1.WaitForStatus(ServiceProcess.ServiceControllerStatus.Stopped, tspTimeOut) Catch Throw New Exception("The controller could not be stopped") End Try Dim strSpoolerFolder As String = "C:\Windows\System32\spool\PRINTERS" Dim s As String For Each s In System.IO.Directory.GetFiles(strSpoolerFolder) System.IO.File.Delete(s) Next s Catch ex As Exception MsgBox(ex.Message) Finally Try Select Case controllerStatus Case ServiceControllerStatus.Running If ServiceController1.Status <> ServiceControllerStatus.Running Then ServiceController1.Start() Case ServiceControllerStatus.Stopped If ServiceController1.Status <> ServiceControllerStatus.Stopped Then ServiceController1.Stop() End Select ServiceController1.WaitForStatus(controllerStatus, tspTimeOut) Catch MsgBox(String.Format("{0}{1}", "The print spooler service could not be returned to its original setting and is currently: ", ServiceController1.Status)) End Try End Try End Sub End Class

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• How to turn off Tomcat logging in Eclipse?

  - by kirdie

  I develop a Vaadin project in Eclipse that I start through Tomcat 6 which gets started directly by Eclipse. Tomcat prints an enormous amount of log messages though on each start which makes it hard to see the output of my own Application. I have already replaced all log levels in tomcat6/conf/logging.properties by WARNING (e.g. java.util.logging.ConsoleHandler.level = WARNING) but I still get many INFO messages. How can I turn this off or restrict the log messages to WARNING? An example of the messages Okt 26, 2012 12:16:36 PM org.apache.catalina.core.AprLifecycleListener init INFO: Loaded APR based Apache Tomcat Native library 1.1.24. Okt 26, 2012 12:16:36 PM org.apache.catalina.core.AprLifecycleListener init INFO: APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true]. Okt 26, 2012 12:16:36 PM org.apache.tomcat.util.digester.SetPropertiesRule begin WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:saim' did not find a matching property. Okt 26, 2012 12:16:37 PM org.apache.coyote.http11.Http11AprProtocol init INFO: Initializing Coyote HTTP/1.1 on http-8080 Okt 26, 2012 12:16:37 PM org.apache.coyote.ajp.AjpAprProtocol init INFO: Initializing Coyote AJP/1.3 on ajp-8009 Okt 26, 2012 12:16:37 PM org.apache.catalina.startup.Catalina load INFO: Initialization processed in 879 ms Okt 26, 2012 12:16:37 PM org.apache.catalina.core.StandardService start INFO: Starting service Catalina Okt 26, 2012 12:16:37 PM org.apache.catalina.core.StandardEngine start INFO: Starting Servlet Engine: Apache Tomcat/6.0.32 Okt 26, 2012 12:16:37 PM org.apache.coyote.http11.Http11AprProtocol start INFO: Starting Coyote HTTP/1.1 on http-8080 Okt 26, 2012 12:16:37 PM org.apache.coyote.ajp.AjpAprProtocol start INFO: Starting Coyote AJP/1.3 on ajp-8009 Okt 26, 2012 12:16:37 PM org.apache.catalina.startup.Catalina start INFO: Server startup in 568 ms

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• CUPS printer on Vritual Machine can be access via CUPS admin, but not by XP?

  - by SJaguar13

  I have a Zebra label printer connected to a Linux Mint virtual machine. It was set up with CUPS and a Windows XP computer can then print to it via http://192.168.1.76:632/printers/labelprinter. That was all fine and dandy I then hooked up a Fargo Pro L PVC card printer to a Windows XP virtual machine. I had to disconnect the label printer as the server that hosted both virtual machines only has 1 parallel port. Now I plugged in the Zebra again, and it cannot print from the Windows XP computer anymore. If I go to the CUPS admin panel on the Windows XP computer, I can see it, everything looks fine, and I can send it a test page to print which works. If I try to print from Windows, I get an error that the printer is not found/cannot connect to the server. The only other thing that changed was the firewall on the router to allow remote desktop to another computer from outside the network, but all the firewall stuff was for external use. Nothing affected the IP address of the internal network. The Linux Mint VM also had a PDF pritner that was shared with CUPS. That printer is also down. I tried setting up a new CUPS installation on another VM, and when I go to share it with XP, I get the same error. I don't know what to try. It has access, it can get to the admin from that computer, it seems to be up and ready, but when Windows tries to connect, the printer isn't found even though 4 days ago everything was fine. Any ideas?

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• How to set up a PRIVATE vimwiki on Dropbox.com

  - by Zongheng Yang

  Hi everyone, I assume those who are reading this page know what vimwiki and dropbox.com are and what they are for, so I might directly go into my confusion. The common way of setting a PRIVATE vimwiki on dropbox is simply let your vimwiki directories be under Dropbox folder (but not Dropbox/Public/ because it would be PUBLIC). Dropbox allows directly viewing html with dropbox.com/* url: for example a index.html can be accessed by url https://dl-web.dropbox.com/get/Wiki/html/index.html?w=bfead71a, being added after the file name a specified string, ?w=bfead71a. Hence, if inside index.html there is reference to A.html, which is located in the same folder index.html is in, it has to be accessed using some url like https://dl-web.dropbox.com/get/Wiki/html/index.html?w=SPECIFIED_STRING. But it is seemingly impossible to hack vimwiki in order to make the hrefs in converted htmls corrected in this way. Is there some approach that can resolve this problem? I hope I make myself clear. Had you any questions, please ask me for further explanations. Thank you!

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• Debian Stable: Can't update kernel, libc won't update.

  - by pascal

  I use Debian Stable (squeeze) on a virtual host where I can't touch the kernel, it's stuck (and will be for some time as support told me) at Linux 2.6.18-028stab070.3 #1 SMP Wed Jul 21 18:33:27 MSD 2010 x86_64 So when I try to update, several packages fail with FATAL: kernel too old for example Preparing to replace libgcc1 1:4.6.0-11 (using .../libgcc1_1%3a4.6.1-1_amd64.deb) ... Unpacking replacement libgcc1 ... Setting up libgcc1 (1:4.6.1-1) ... FATAL: kernel too old Segmentation fault dpkg: error processing libgcc1 (--configure): subprocess installed post-installation script returned error exit status 139 and some version chaos ensued: The following packages have unmet dependencies: libc-dev-bin : Depends: libc6 (> 2.13) but 2.11.2-13 is installed libc6 : Depends: libc-bin (= 2.11.2-13) but 2.13-5 is installed libc6-dev : Depends: libc6 (= 2.13-5) but 2.11.2-13 is installed libquadmath0 : Depends: gcc-4.6-base (= 4.6.0-2) but 4.6.0-11 is installed libstdc++6 : Depends: gcc-4.6-base (= 4.6.0-2) but 4.6.0-11 is installed locales : Depends: glibc-2.13-1 What should I do? I want to keep the system up-to-date, so I want to pin as few packets as possible, but I also don't want to have to compile anything manually. Trying to pin the status quo and figured out where the error came from: ldconfig segfaults. -v doesn't print anything more so I can't tell what's the actual problem. # ldconfig FATAL: kernel too old

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• How do you enable view source in ie8 when it gets magically diabled

  - by Tim Meers

  I have multiple computers that all seem to have View Source disabled from the content menu when you right click on a web page. Now I know it's not that the web page is some how disabling it, I'm pretty sure thats not even possible. But alas I have at least 3 machines in my office (not on AD) that have this problem. I have also worked on clients computers that have this same issue. It's down right maddening! I tried to Google for it, but it just shows results from the dawn of IE6 in all of it's "glory" with a bug where if the cache was full it would be disabled. But this is not the case in IE8. Any body have a clue why this is happening, or a fix for it? Maybe a reg setting? Update: So I got a little closer to solving it, but there was still an issue on one computer where it allowed it not is HTTP, but not in HTTPS. One other computer works correctly in both. I Found these two keys missing in the registry: [-HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\View Source Editor] [-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\View Source Editor]

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• GUI interfaces to ATI card behave weirdly out of the box and after updates.

  - by jdk

  My Lenovo W500 came with an ATI Mobility FireGL V5700 and both the Catalyst control center software and Vista display manager display four monitors. What's really annoying is the behaviour. My two active displays (laptop display + my external monitor) are always #s 3 and 4 respectively which doesn't make sense. This is out of the box. Additionally dragging & dropping is jumpy and displays #1 and 2 (always inactive because they don't exist to the software) are often preventing me from dragging #3 and 4 to the rightmost side. They also auto-snap to weird positions and certain sensible positions like position one directly over top of the other are not possible. The exact same annoyances are present when using the Windows Display manager too. In other words the interface is crap and I'm looking for a fix that's not wishing I had gone with nVidia instead. I've updated drivers, and Catalyst control centre. Have latest Windows and AMD/ATI updates. Any thoughts? Graphics Software Driver Packaging Version 8.563.2.1-090401a-079160C-Lenovo Provider ATI Technologies Inc. 2D Driver Version 7.01.01.849 2D Driver File Path /REGISTRY/MACHINE/SYSTEM/ControlSet001/Control/Class/{4D36E968-E325-11CE-BFC1-08002BE10318}/0001 Direct3D Version 7.14.10.0630 OpenGL Version 6.14.10.8306 Catalyst® Control Center Version 2009.0401.1328.22301 Graphics Hardware Primary Adapter Graphics Card Manufacturer Powered by ATI Graphics Chipset ATI Mobility FireGL V5700 Device ID 9591 Vendor 1002 Subsystem ID 2126 Subsystem Vendor ID 17AA Graphics Bus Capability PCI Express 2.0 Maximum Bus Setting PCI Express 2.0 x16 BIOS Version 010.088.000.021 BIOS Part Number BK-ATI VER010.088.000.021.034663 BIOS Date 2009/09/30 Memory Size 512 MB Memory Type DDR3 Core Clock in MHz 600 MHz Memory Clock in MHz 700 MHz

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• Windows VPN for remote site connection drawbacks

  - by Damo

  I'm looking for some thoughts on a particular way of setting up a estate of machines. We have a requirement to install machines into unmanned, remote locations. These machines will auto login and perform tasks controlled from a central server. In order to manage patching, AV, updates etc I want these machines to be joined to a dedicated domain for this estate. Some of the locations will only have 3G connectivity (via other hardware), others will be located on customer premises in internal networks. The central server (of ours) and the Domain Controller will be on a public WAN. I see two ways of facilitating this. Install a router at each location and have a site to site VPN between the remove device and the data centre where the servers are location Have the remote machine dial up and authenticate via a Windows VPN connection to the DC via RAS Option one is more costly to setup and has a higher operational cost. It also offers better diagnostics if the remote PC goes down. Option two works well but is solely dependent on the VPN connection been made before any communication can be made to the remote machine. In a simple test, I can got a Windows 7 machine to dial a VPN prior to authentication to a domain, then automatically login to the machine using domain credentials. If the VPN connection drops, it redials. I can also create a timed task to auto connect every hour in case of other issues. I'd like to know, why (if at all) is operating a remote network of devices which are located in various out of band locations in this way a bad idea? Consider 300-400 remote machines all at different sites. I'd rather have 400 VPN connections to a 2008 server than 400 routers, however I'd like to know other opinions on this.

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• Unable to login through varnish cache

  - by ArunS

  I am setting up Active Collab Site in my new server. The setup is like below Internet --- varnish ---- apache But i am not able to login to the site through varnish cache.. But i can login to site through apache. Here is my VCL file backend default { .host = "localhost"; .port = "8080"; } acl purge { "localhost"; } sub vcl_recv { if (req.request == "PURGE") { if (!client.ip ~ purge) { error 405 "Not allowed."; } return(lookup); } if (req.url ~ "^/$") { unset req.http.cookie; } } sub vcl_hit { if (req.request == "PURGE") { set obj.ttl = 0s; error 200 "Purged."; } } sub vcl_miss { if (req.request == "PURGE") { error 404 "Not in cache."; } if (!(req.url ~ "wp-(login|admin)")) { unset req.http.cookie; } if (req.url ~ "^/[^?]+.(jpeg|jpg|png|gif|ico|js|css|txt|gz|zip|lzma|bz2|tgz|tbz|html|htm)(\?.|)$") { unset req.http.cookie; set req.url = regsub(req.url, "\?.$", ""); } if (req.url ~ "^/$") { unset req.http.cookie; } } sub vcl_fetch { if (req.url ~ "^/$") { unset beresp.http.set-cookie; } if (!(req.url ~ "wp-(login|admin)")) { unset beresp.http.set-cookie; }} When i try to login through varnish i was redirect back to login page. If i enter wrong password, then it will ask for enter correct password.

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• Would like to change audio codec, but keep video settings with ffmpeg

  - by Craig Tataryn

  I have a video for which I'd like to convert the audio codec to AAC 320 kbps / 44.100 kHz. What would I use for ffmpeg switches such that all the video settings and codec remain the same, but only the audio codec and settings change? Here's my video: $ ffmpeg -i Winnipeg.rb\ Scala-Talk.mov FFmpeg version SVN-r25375, Copyright (c) 2000-2010 the FFmpeg developers built on Oct 6 2010 13:02:41 with gcc 4.2.1 (Apple Inc. build 5664) configuration: --enable-libmp3lame --enable-shared --disable-mmx --arch=x86_64 libavutil 50.32. 2 / 50.32. 2 libavcore 0. 9. 1 / 0. 9. 1 libavcodec 52.92. 0 / 52.92. 0 libavformat 52.80. 0 / 52.80. 0 libavdevice 52. 2. 2 / 52. 2. 2 libavfilter 1.48. 0 / 1.48. 0 libswscale 0.12. 0 / 0.12. 0 Seems stream 0 codec frame rate differs from container frame rate: 2000.00 (2000/1) -> 10.00 (10/1) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Winnipeg.rb Scala-Talk.mov': Metadata: major_brand : qt minor_version : 537199360 compatible_brands: qt Duration: 01:10:53.00, start: 0.000000, bitrate: 283 kb/s Stream #0.0(eng): Video: h264, yuv420p, 800x598, 94 kb/s, 10 fps, 10 tbr, 1k tbn, 2k tbc Stream #0.1(eng): Audio: adpcm_ima_qt, 22050 Hz, 1 channels, s16 Stream #0.2(eng): Audio: adpcm_ima_qt, 22050 Hz, 1 channels, s16 At least one output file must be specified Many thanks in advance! One with with ffmpeg I've never been able to grok is how to just "tweak" files without having to regurgitate every little setting for things you don't want changes.

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• git : The remote end hung up unexpectedly - too many simultaneous users?

  - by Pritam Barhate

  I asked this first on StackOverflow and I was suggested that I should ask it here: We have a self hosted git server (Gitolite) on a VPS account (CPU:2.68GHz RAM:1824MB). This same VPS is also used to publish our underdevelopment web apps for client demos. (Very little traffic). so the main use of the server is as a Git Server Only. This git server is accessed by a team of 30-40 people for various projects. Our problem is that during the day when 6-7 people are trying to access the server (sometimes same repo) we get frequent error message: ssh: connect to host xxx.xxx.xx.xx port 22: Bad file number fatal: The remote end hung up unexpectedly After trying for 10-15 minutes it generally succeeds. During early mornings and late nights when there are only 1-2 people, git commands work with 100% success rate. Also I would like to note that if I access the other file hosted on the server through HTTP it works fine. I found a couple of questions on StackOverflow and on other sites regarding this. But most of the people point towards SSH key set up or conflicts between Msysgit and Cygns SSH. However I don't think this is the problem in our case as we get this behavior on Windows (using msysgit only) as well as Mac Machines. Also if it was SSH configuration issue then it shouldn't work at all. But in our case it works after 10-15 minutes. I think in our case it might be too many simultaneous connections to same server (or same repo) or something like that. Does there exists a setting or a conf file that needs to modified to solve this problem? Please help me solve this problem or point me in the right direction. Thanks in advance. Pritam.

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• How to determine the root cause of a system lockup on Ubuntu 8.04 LTS?

  - by jdt141

  I'm currently working a project that involves setting up a PC/104 stack and running Ubuntu 8.04 LTS. We need to use the PC/104 stack because its an embedded application - and we're required to use a DeviceNet peripheral card to communicate to other devices. (DeviceNet is just a protocol on top of CAN.) Anyway, the following hardware is on the stack: Kontron MOPSPM104 with a 1GHz Intel Celeron processor ConnectTech FlashDrive/104 4GB Industrial Temp (-40 to +85 C) Woodhead (Molex) PC104DVNIO DeviceNet card A run of the mill 104 power supply The Kontron Board offers two serial ports, one VGA out, and two USB ports. The DeviceNet card is an ISA card. Because of this (per the User's Guide for the Kontron Board), I have manually set the IRQs in the BIOS to be appropriately configured, and turned off ACPI in both the BIOS and passed the appropriate flag in GRUB. I've installed Ubuntu 8.04 desktop, 32 bit. The problem that I'm having is that, from time to time, the entire 104 stack locks up. This only seems to happen in two cases, both of which we're running GNOME. We have a custom application that uses the DeviceNet card, and the system will lock up, or (more frequently) when we're running Firefox and either surfing for some information or trying to test it - typically by streaming video from a IP-camera. The reason I ask this questions is I cannot determine the root cause of this lockup. The IRQs appear to correctly configured in the BIOS and as the Kernel sees them, and nothing is logged to dmesg. If you all could help me determine the root cause of this lockup, I would greatly appreciate it. Thanks.

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• How to install 64bit version of Mongodb

  - by slownage

  How can I install the 64bit (x86_64) version of MongoDB? I've specified in the 10gen.repo the 64bit: baseurl=http://downloads-distro.mongodb.org/repo/redhat/os/x86_64 But when I run: yum install mongo-10gen mongo-10gen-server It's the 32bit (see the i686) that it's set to be installed. Failed to set locale, defaulting to C Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.fdcservers.net * epel: mirror.steadfast.net * extras: mirror.fdcservers.net * rpmforge: mirror.rit.edu * updates: mirror.fdcservers.net 10gen | 951 B 00:00 Not using downloaded repomd.xml because it is older than what we have: Current : Tue Oct 30 15:55:02 2012 Downloaded: Tue Oct 30 15:54:51 2012 Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package mongo-10gen.i686 0:2.2.1-mongodb_1 will be installed ---> Package mongo-10gen-server.i686 0:2.2.1-mongodb_1 will be installed --> Finished Dependency Resolution Dependencies Resolved ====================================================================================================================================================== Package Arch Version Repository Size ====================================================================================================================================================== Installing: mongo-10gen i686 2.2.1-mongodb_1 10gen 42 M mongo-10gen-server i686 2.2.1-mongodb_1 10gen 6.5 M Transaction Summary ====================================================================================================================================================== Install 2 Package(s) Total download size: 48 M Installed size: 118 M I think I know why it want's to install the 32bit version: the first time I've made the 10gen.repo file I had in there the 32bit link specified, and installed the 32bit, which later I've deleted. Maybe something has been cached. Could someone help me out with this.

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• 'Bug in Mailman version 2.1.12'

  - by davorg

  I'm working on setting up a server running Plesk 10.4.4 Update #13 on Centos 6.2. I've configured Mailman and now I want to set up some mailing lists. I've created a list in the Plesk control panel, but when I try to administer the new list (by visiting http://lists.[domain].com/mailman/admin/[listname] I see the following error: Bug in Mailman version 2.1.12 We're sorry, we hit a bug! Please inform the webmaster for this site of this problem. Printing of traceback and other system information has been explicitly inhibited, but the webmaster can find this information in the Mailman error logs. I see exactly the same error if I try to go to the list info page at http://lists.[domain].com/mailman/listinfo/[listname]. I would follow the instructions and look in the error logs, but I can't find them. I would expect to find a file at /var/log/mailman/error, but there's nothing there. My test list seems to work correctly. It sends all the expected email. It's just the web pages for the list that seem to be broken. Has anyone else seen this? Any suggestions for tracking down and fixing the problem? p.s. I think I've chosen the correct Stack Exchange site, but it this question would be better asked elsewhere, please let me know. Update: I got to the bottom of this, so I'm documenting the answer in case anyone else has the same problem. The fact that I couldn't find the error log was the clue. The problem was that the Mailman process didn't have permissions to create an error log. And it seems that if Mailman can't create an error log then it will respond to any web request with this error page. Creating an error log file (in /var/log/mailman/error) and giving it the correct permissions fixed the problem.

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• Windows 7 & Photoshop CS5.1 - "Fonts missing" issue - I have the font!! (sort of)

  - by Tigue Von Bond

  I've noticed a really aggravating issue with Adobe Photoshop CS5.1 on at least two occasions. I downloaded a layered PSD file to work with, in the release notes it directed me to a download page for all of the font used, which was Futura Medium Condensed. I chcked and did not have any Futura fonts at all. So I downloaded and installed the font from the source provided by the provider of the PSD. I closed and reopened Photoshop and when I open the PSD file I get an error saying: Some text layers contain fonts that are missing. These layers will need to have the missing fonts replaced before they can be used for vector based output. I then go to edit the text layer and receive: The following fonts are missing for text layer "discount" Future CondensedExtraBold Font substitution will occur. Continue? If I click OK, it substitutes Myriad Pro for this layer. Didn't I download the right font? I go into the font dropdown and see I have a font with a slightly different name "Futura-CondensedExtraBold-Th Regular" I have also seen this issue with Helvetica. I have received a PSD file, same "some text layers contain fonts that are missing These..." error dialog when I open up the file - and when I go to edit a layer with text I get: The following fonts are missing for text layer "Home": Helvetica Font substitution will occur. Continue? I click continue - it substitutes Myriad Pro - and check my font list and sure enough I have a bunch of Helvetica fonts, none exactly named "Helvetica" Is this a common issue? Googling it yielded a few people with similar problems (I think all on Macs) but either no concrete help or no response. Is it that the two font names aren't EXACT matches? If that is the case is there any way of setting up Photoshop to more intelligently substitute or even set up some sort of mapping (if "Helvetica" then substitute "Helvetica Lt Std" ? Is there anything else, maybe something that I am not thinking of?

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• What to look for in a switch with LAN/WAN verses an iSCSI SAN?

  - by Luke

  I'm setting up a VMWare ESXi 5 environment with 3 server nodes. Dell recommended 2x Force10 S60 switches shared (iSCSI SAN, LAN/WAN). The S60 switches are extremely powerful. They have 1.25 GB of buffer cache, < 9us latency. But they are very expensive (online price ~$15k per switch, actual quote a little less). I've been told that "by the book" you should at least have 2 internal switches for SAN, and 2 switches for LAN/WAN (each with a redundant). I know some of the pros and cons of each approach. What I'm wondering is, would it be more cost effective to disjoin the SAN from LAN with less expensive switches? The answer to this question highlights what I should be looking for in a switch for the SAN. What should I be looking for in a LAN/WAN switch, in comparison to the SAN? With the above linked question for the SAN: How is buffer latency measured? When you see 36 MB of buffer cache, is that shared or per port? So 36 MB would be 768kb or 36MB per port? With 3 to 6 servers how much buffer cache do you really need? What else should I be looking at? Our application will be heavily using HTML5 websockets (high number of persistent connections). The amount of data being sent is small; Data sent between client <- server isn't broadcasted (not a chat/IM service). We will be doing some database reporting too (csv export, sums, some joins). We are a small business and on a budget. We'd probably only be able to spend no more than $20k on switches total (2 or 4).

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