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• Problems serving SVN over HTTPS on Ubuntu 10.04

  - by odd parity

  We've been experiencing some problems with our Subversion server after upgrading to Ubuntu 10.04. When trying to access a repository, regardless of client (I've tried git-svn and svn on Windows as well as svn on Ubuntu 10.04, from different computers and network locations), I get a 400 bad request. Here's the output from svn: svn: Server sent unexpected return value (400 Bad Request) in response to OPTIONS request for 'https://svn.example.org/svn/programs' Here are the relevant entries from the Apache logs (I'm running Apache 2.2): error.log [Mon Jun 14 11:29:31 2010] [error] [client x.x.x.x] request failed: error reading the headers ssl_access.log x.x.x.x - - [14/Jun/2010:11:29:28 +0200] "OPTIONS /svn/programs HTTP/1.1" 401 2643 "-" "SVN/1.6.6 (r40053) neon/0.29.0" x.x.x.x - - [14/Jun/2010:11:29:31 +0200] "ction-set/></D:options>OPTIONS /svn/programs HTTP/1.1" 400 644 "-" "SVN/1.6.6 (r40053) neon/0.29.0" If anyone has run into similar problems or could give me a pointer to track down the cause of this I'd be very grateful - I'd really like to avoid having to downgrade the box again.

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• Does RDNS for mail server have to match the mail server hostname exactly?

  - by threecheeseopera

  Typically when setting up a mail server, I create an rDNS record for the mail server IP to match the mail server hostname (ex: mail.example.com). Can I instead set the rDNS ptr to match the parent domain (e.g. example.com), if this server is being used for multiple purposes, and still send mail successfully (i.e. not be classified as spam b/c of mismatched rDNS)? Thanks! EDIT: The article at http://en.wikipedia.org/wiki/Forward_Confirmed_reverse_DNS seems to indicate that it might be more complicated than I had thought. For instance, 1) I did not know that you could have multiple PTR records for a given IP; 2) it appears that as long as each PTR record matches an A record, everything is good (basically nullifying my question). Would you agree?

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• SSH use only my password, Ignore my ssh key, don't prompt me for a passphrase

  - by Stefan Lasiewski

  This is a question regarding the OpenSSH client on Linux, MacOSX and FreeBSD. Normally, I log into systems using my SSH key. Occasionally, I want my SSH client to ignore my SSH key and use a password instead. If I 'ssh hostname', my client prompts me for the Passphrase to my SSH key which is an annoyance. Instead, I want the client to simply ignore my SSH key, so that the server will ask me for my password instead. I tried the following, but I am still prompted for the passphrase to my SSH key. After this, I am prompted for my password. ssh -o PreferredAuthentications=password host.example.org I want to do this on the client side, without any modification of the remote host.

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• disable "SSL 2.0+ upgrade support" in nginx

  - by Bhargava

  I evaluated the SSL credentials of my server with qualsys ssl page ( https://www.ssllabs.com/ssldb/index.html ) and found the entry "SSL 2.0+ upgrade support" being marked as yes. I want to disable this sslv2 handshake too. I searched around and found http://forum.nginx.org/read.php?2,104032m, which points to creating a openssl.cnf file. Have a naive question here. After creating the file, does one need to re-key his certificate for this to work ? Are there any other steps to follow ? I use nginx 1.0.11 and openssl "OpenSSL 1.0.0e-fips 6 Sep 2011". I have set ssl_ciphers in nginx to SSLv3 TLSv1;

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• How to discern video details from Linux Live CD

  - by Chris Lieb

  I was having trouble getting X.Org to work with the video card in a recently aquired laptop, so I decided to try to probe around the configuration of a Linux Live CD to figure out how to set up my kernel. I chose the Sabayon 5.0 Live DVD because it was the only one that I could find that was the same or newer than the 2.6.32 kernel I have installed on the laptop right now. Of course, the DVD booted right into GNOME without issue, unlike the hangs and crashes that I had been getting. So, I want to figure out what kernel driver this Live DVD is currently using, but I don't know how to. hwinfo doesn't shed any light on the matter, and lspci -vnn doesn't list a driver for my video device, though both methods correctly identify that I have an Intel 855GM video processor. How can I find out this information?

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• Installing PHP-GTK with PHP 5.3 on OS X

  - by Shabbyrobe

  I'm having trouble getting php-gtk installed with php 5.3 on os x. I'm currently using macports to do it and when I try to install php-gtk, it spews 'duplicate static' errors: Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_php_php5-gtk/work/php-gtk-2.0.1" && /usr/bin/make -j2 all " returned error 2 Command output: ext/gtk+/gen_pango.c:2951: error: duplicate 'static' ext/gtk+/gen_pango.c:2957: error: duplicate 'static' ext/gtk+/gen_pango.c:3097: error: duplicate 'static' ext/gtk+/gen_pango.c:3103: error: duplicate 'static' Is there a way to coerce it into building, or an alternative way to install it?

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• Monitoring on java daemon on centos

  - by user111196

  I have a java application which I run using yasjw tool as a daemon. I need to monitor it in case it goes down I need some kind of alert or even restart it. Is there any tool can help me do this on centos environment? The results of ps -ef | grep java root 3109 1 0 Apr06 ? 00:04:35 /usr/java/jdk1.6.0_18/bin/java -Dwrapper.pidfile=/var/run/wrapper.commServer.pid -Dwrapper.service=true -Dwrapper.visible=false -jar /usr/local/yajsw-beta-10.2/wrapper.jar -c /usr/local/yajsw-beta-10.2/conf/wrapper.conf root 3132 3109 0 Apr06 ? 00:25:26 /usr/java/jdk1.6.0_18/bin/java -classpath /usr/local/yajsw-beta-10.2/./wrapperApp.jar:/usr/local -Xrs -Dwrapper.service=true -Dwrapper.console.visible=false -Dwrapper.visible=false -Dwrapper.pidfile=/var/run/wrapper.commServer.pid -Dwrapper.config=/usr/local/yajsw-beta-10.2/conf/wrapper.conf -Dwrapper.port=15003 -Dwrapper.key=4276015160565963367 -Dwrapper.teeName=4276015160565963367$1333699547154 -Dwrapper.tmpPath=/tmp org.rzo.yajsw.app.WrapperJVMMain root 23986 23945 0 16:53 pts/0 00:00:00 grep java pidof java 3132 3109

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• Group policy results failing with "Invalid class" error

  - by bshacklett

  When trying to run the Group Policy Results Wizard against a specific workstation, I'm getting the following error: The wizard was unable to generate the computer or user's data due to insufficient permissions. Details: Invalid class I'm guessing that the class being referred to is a WMI class, but I haven't gotten much farther. I've run sfc /scannow on the machine with no luck. I've also followed all of the recommendations in this article: http://windowsxp.mvps.org/repairwmi.htm. I cannot find anything useful in the event logs and I can't think of anywhere else I could look to find out what's really happening here. Any help would be appreciated.

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• Bacula vs. BackupPC [closed]

  - by ujjain

  I have been googling about the differences between them. Bacula has lots of roles BackupPC is easier to configure Bacula works with agent, not rsync (great for Windows backups) It seems that Bacula is most often compared to Amanda though, while BackupPC seems a perfectly lovely and popular backup distribution to. I currently backup my servers with rsnapshot, but I am looking for a professional scalable solution that could also back-up 50 hosts without problems. Preferably a solution that can offer bare metal restores for my Linux servers. I am not looking to reinstall the exact same version of Plesk, the software, etc... Update: I see this ranks high in Google, I found a good article: http://www.serverfocus.org/backuppc-vs-bacula-vs-amanda. I personally think that BackupPC is good for smaller environment, but Bacula, despite the high learning curve, is better for environments that requilre scaling.

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• WIndows Emacs Keybinding

  - by Josh

  I know this is not a Windows site, so my apologies. I use Ubuntu all day, every day, and have finally convinced my buddy to try it. He is on Windows 7, so we installed this: http://www.ourcomments.org/cgi-bin/emacsw32-dl-latest.pl . It seems to be working great, but when he hits C-p ( prev. line ) it is trying to print the page for some reason. So, 2 questions. Is there a way to make it stop that, and is there a way to just run it from the command line, or without all of the fancy mouse stuff? Essentially as --no-windows? Thanks!

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• Why use FQDN as DNS-server option in DHCP?

  - by Filip Haglund

  I've seen multiple default configurations of DHCP-servers with a FQDN set as the DNS-server option. Doesn't this imply a catch-22, or the need for that DNS-server to be in the hosts file of every single client? example from dhcp3-server in debian 6: option domain-name-servers ns1.internal.example.org; I can see how using a dns name is convenient because it's only an A-record to change, and they can be load balanced if wanted, but I don't see how the client is going to resolve the name. Why are people using FQDN's as DNS-server addresses in DHCP?

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• Streaming media from linux server - low footprint is crucial

  - by Mike Haye

  I recently pre-ordered the Raspberry Pi. http://www.raspberrypi.org/faqs For those of you who don't know it, it's a machine with 256 mb ram and a 700 MHz processor for $35. I plan to run linux on an SD card on this machine and have it act as both a htpc, VPN and media server. In regard to the media server part, I need to find some linux software that has a small footprint, but allows me to stream media to other devices connected to the internet (preferably without having to install any additional software on the client machines) Also, I would love if the video could be compressed, so the data usage wouldn't be so big for the client machine (e.g. when I'm using my data plan on my smartphone ;) ) Thanks in advance for any answers :) Mike.

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• Resolving real IP address out of a dynamic dns address

  - by stavnir

  I recently opened a dynamic dns user (at no-ip for that matter..) for my own personal needs and especially for ssh-ing my computer whenever I need to, without knowing it's static IP. My questions are: Am I misusing the concept of dynamic dns? Are there more appropriate methods to do what I want to do? If not, how do I resolve my router's real ip address? Firefox somehow manages to do so, nslookup and other similar commands only resolve the ip of the ddns server (e.g. no-ip.org). Trying to figure this mystery with wireshark failed miserably ;)

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• Linux - use dhcp again to get IP

  - by Markus Orreilly

  I had statically set my ip in Linux using: sudo ifconfig eth0 192.168.blah.blah Now I want it to go back to using DHCP to assign the IP. How do I do that? This is what I see when I run dhclient Internet Systems Consortium DHCP Client V3.1.2 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ Listening on LPF/eth0/08:00:27:9b:43:09 Sending on LPF/eth0/08:00:27:9b:43:09 Sending on Socket/fallback DHCPREQUEST of 192.168.56.104 on eth0 to 255.255.255.255 port 67

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• is it written in flex? the steam client application

  - by Jayapal Chandran

  Hi, I was about to download the PC Game Mafia II ( http://en.wikipedia.org/wiki/Mafia_II ). The site said that do i have steam and i said no ... it asked whether to download and i gave yes. After downloading a 1.5mb exe it executed, dowloaded and installed additional files. After that the program opened. It gave me a feeling that that could have written in flex. if some body could clear this then that could be nice... besides, i went to the mafia ii official site to download the demo and again it asked whether i have steam installed and i said yes. then the firefox application launch dialog box appeared. and again i had this question how to launch an application using firefox... ?? may be i should ask this as a separate question but since it is associated with the above question i asked it here...

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• distributed, fault-tolerant network block device

  - by gucki

  I'm looking for a distributed, fault-tolerant network storage system which exposes block devices (not filesystems) on the clients. A client's block device should write simultaneously to several storage nodes A client's block device should not fail as long as not all storage nodes backing it went down The master should automatically redistribute storages' data when a storage node fails or gets added/ removed A single master (which is for metadata only) is fine So ideally the architecture would be very similar to moosefs (http://www.moosefs.org/) but instead of exposing a real filesystem mounted using a fuse client it'd expose block devices on the clients. I know of iscsi and drbd but both don't seem to offer what I'm looking for. Or am I missing something?

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• Ubuntu 11.04 and OpenLDAP - where is the config?

  - by Tom SKelley

  I've been asked to setup a multimaster LDAP environment on Ubuntu 11.04 - instead of a single master server. I cloned the master server and recreated it into two VMs. I am trying to follow the instructions on the OpenLDAP documentation here: http://www.openldap.org/doc/admin24/replication.html and it talks about modifying the cn=config tree within LDAP. The subdirectory tree appears to be there at: /etc/ldap/slapd.d/ and a slapcat -b cn=config drops out a load of config information. When I try to connect using a browser and the admin bind credentials: ldapsearch -D '<adminDN>' -w <password> -b 'cn=config' I get: # extended LDIF # # LDAPv3 # base <> (default) with scope subtree # filter: (objectclass=*) # requesting: ALL # # search result search: 2 result: 32 No such object I don't see the config context when I connect via an LDAP browser either. I'm sure I'm missing something, but I can't see what it is!

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• Know which Apps to Remove From MSConfig with this Startup Applications List

  - by Mit Naik

  Just found userfull information on Internet and thought it would help all of users. This list of startup applications is a really handy resource for cleaning up msconfig entries that have overtaken old computers. It catalogs tons of different startup programs, what they do, and which ones you should delete, leave running, or decide based on the program's usefulness. It even has a nice search box so you can search through the tens of thousands of entries. Hit the link below to check it out, and if your relatives' computer is especially broken, be sure to check out our guide to fixing your relatives' terrible computer. http://www.sysinfo.org/startuplist.php Please update the list here if you got any other tools or sites which can be help full to others

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• X Session from Mac

  - by tekknolagi

  How can I log into an X server from Mac OS X? I know that ssh -X username@host will log me in and I will have the capability to run X applications. On Cygwin/X you can log in and have a whole X session from your computer... and it will look something like this: How can I replicate this? Using this batch script: @echo off SET DISPLAY=127.0.0.1:0.0 SET REMOTE_HOST=%1 IF "%REMOTE_HOST%" == "" SET REMOTE_HOST=10.0.0.1 SET CYGWIN_ROOT=\cygwin SET RUN=%CYGWIN_ROOT%\bin\run -p /usr/bin SET PATH=.;%CYGWIN_ROOT%\bin;%PATH% SET XAPPLRESDIR= SET XCMSDB= SET XKEYSYMDB= SET XNLSPATH= if not exist %CYGWIN_ROOT%\tmp\.X11-unix\X0 goto CLEANUP-FINISH attrib -s %CYGWIN_ROOT%\tmp\.X11-unix\X0 del %CYGWIN_ROOT%\tmp\.X11-unix\X0 :CLEANUP-FINISH if exist %CYGWIN_ROOT%\tmp\.X11-unix rmdir %CYGWIN_ROOT%\tmp\.X11-unix if "%OS%" == "Windows_NT" goto OS_NT echo startxdmcp.bat - Starting on Windows 95/98/Me goto STARTUP :OS_NT REM Windows NT/2000/XP echo startxdmcp.bat - Starting on Windows NT/2000/XP :STARTUP %RUN% XWin -query tekknolagi.dyndns.org -clipboard -lesspointer -scrollbars -screen 0 1050x1655@2 -screen 1 1680x985@1

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• OpenLDAP RHEL 6

  - by AndyM

  Hi all I've been configuring OpenLDAP on RHEL 6 and its seems you have run the following to rebuild the config dirs. I'm ok with that , but my issues is , say I want to change the server passwd , do I have to go through the whole process every time I change the config ? Is there a way of changing the slapd config after its been built using the RHEL6 method ? below is the advice I've found on the net from http://www.linuxtopia.org/online_books/rhel6/rhel_6_migration_guide/rhel_6_migration_ch07s03.html This example assumes that the file to convert from the old slapd configuration is located at /etc/openldap/slapd.conf and the new directory for OpenLDAP configuration is located at /etc/openldap/slapd.d/. Remove the contents of the new /etc/openldap/slapd.d/ directory: rm -rf /etc/openldap/slapd.d/* Run slaptest to check the validity of the configuration file and specify the new configuration directory: slaptest -f /etc/openldap/slapd.conf -F /etc/openldap/slapd.d Configure permissions on the new directory: chown -R ldap:ldap /etc/openldap/slapd.d chmod -R 000 /etc/openldap/slapd.d chmod -R u+rwX /etc/openldap/slapd.d

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• Full HD video playback acceleration with mplayer on Ubuntu Lucid

  - by pts

  I know that for an NVidia card I can sudo apt-get install nvidia-current mplayer, reboot, and then use mplayer -vo vdpau -vc ffmpeg12vdpau,ffwmv3vdpau,ffvc1vdpau,ffh264vdpau FILE.mkv to get accelerated video playback of H.264 and other codecs, so even full HD videos can be played back with only little CPU. (And there are many other options, e.g. XBMC also supports VDPAU.) But how do I get accelerated video playback if I have a recent ATI or Intel video card on Ubuntu Lucid? How do I figure out if my video card has acceleration built in? The solution has to work with mplayer or mplayer2. It's OK for me to recompile mplayer(2), but I'd prefer installing both the kernel and the X.org X server from a binary package repository.

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• Network shares do not mount

  - by Alex

  My network shares were mounting fine yesterday.. suddenly they are not. They were mounting fine for the last two weeks or however long since I added them. When I run sudo mount -a I get the following error: topsy@monolyth:~$ sudo mount -a mount error(12): Cannot allocate memory Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) mount error(12): Cannot allocate memory Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) mount error(12): Cannot allocate memory Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) mount error(12): Cannot allocate memory Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) topsy@monolyth:~$ I followed this guide when setting them up: http://ubuntuforums.org/showthread.php?t=288534 So I tried removing them by doing the reverse, and then rebooting, then adding them again and rebooting. Problem persists.

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• IIS NLB Web Farm to front Single Tomcat Instance

  - by Brent Pabst

  I've got a single Tomcat 6 server that hosts a JSP app. We just spun up a new IIS 7.5 web farm to host our other internal apps. Currently the machine that hosts Tomcat is also running IIS 7 with the ISAPI filter loaded to provide front-end handling for the JSP app. I'd like to move the IIS portion to the web farm to consolidate our IIS presence and let the Tomcat server just serve and run Java and Tomcat. Has anyone done this, is it even possible while ensuring session state is properly maintained? I had it up and running using the IIS Tomcat Connector http://tomcatiis.riaforge.org/ but after a while the communication between the boxes slowed and pages would not load. In addition it seemed like some of our authentication tickets were timing out. Thanks for any ideas or reference material!

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• Enabling NAT loopback on HG556a router?

  - by galdikas

  This is one of the standard issue vodafone routers. So i set up web-server on my laptop, and it is accessible to the internet now. However I need to be able to access it from my machine using the public address. But I just cannot find where to enable nat loopback. I looked for options in both regular and advanced user logins (web interfaces). So I suppose the last option is telneting into it, and using commands to do it.. but I don't know how to access it (cant find the credentials). http://rhiggins.sdf-eu.org/blog/index.php?entry=entry110722-164625 In above link it says that i can find this info in configuration file, but anyone could tell me how to access it? And then what commands should I use to enable the NAT loopback?

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• Gentoo Linux -> Ubuntu: Can I Preserve My LVM/RAID Devices, Or Do I Need To Reformat?

  - by Eddie Parker

  Hello: I've got a Gentoo box that I'm interested in switching over to an Ubuntu box. I currently have the partitions laid out using a mixture of RAID (mdadm) and LVM2, as specified in this document [1]. Ideally I'd like to just wipe out the non /home partition, as it's got data I'd like to keep. Is it possible to reuse the current setup, or do I need to restart? vgdisplay, vgchange -a y, etc don't yield any results from the Ubuntu LiveCD, and I'm wary to run any commands that might wipe my data. Your help would be appreciated. [1] http://www.gentoo.org/doc/en/gentoo-x86+raid+lvm2-quickinstall.xml

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