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• Virtualized Screen Resolution

  - by Jim R

  I have a 64 bit Ubuntu 9.10 workstation with two virtualized guest OSes using KVM/QEMU. Also both 64-bit. One is Fedora 12 the other is beta of Ubuntu 10.04. The problem is that I would like to use a larger size display that is configured by default. Both guest OSes have a maximum screen resolution of 1024x768. I would like to increase this to something like 1280x900 or 1440x900. The resolution of the host system is 1920x1080. This configuration appears to be a result of the installation detecting the resolution being reported by the virtual screen during installation. The only information I have found on the subject suggests modifying the xorg.conf file in the /etc/X11 directory. Neither guest system has this file. I tried creating one by hand in the Fedora system and managed to render it completely unusable. Not a big deal as this is recently installed and can be reinstalled easily. Is what I want to do possible? If so, how do I accomplish it?

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• Virtualized Screen Resolution

  - by Jim R

  I have a 64 bit Ubuntu 9.10 workstation with two virtualized guest OSes using KVM/QEMU. Also both 64-bit. One is Fedora 12 the other is beta of Ubuntu 10.04. The problem is that I would like to use a larger size display that is configured by default. Both guest OSes have a maximum screen resolution of 1024x768. I would like to increase this to something like 1280x900 or 1440x900. The resolution of the host system is 1920x1080. This configuration appears to be a result of the installation detecting the resolution being reported by the virtual screen during installation. The only information I have found on the subject suggests modifying the xorg.conf file in the /etc/X11 directory. Neither guest system has this file. I tried creating one by hand in the Fedora system and managed to render it completely unusable. Not a big deal as this is recently installed and can be reinstalled easily. Is what I want to do possible? If so, how do I accomplish it?

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• Using our own certificate authority for business email encryption

  - by LumenAlbum

  I've read the available similar questions on serverfault but I haven't quite found a definite answer to the security aspect of it - hence here's my question: I'm administrator of an office working with tax data and we want to start using certificate-based eMail encryption with our clients. Considering the prices for issued certificates by VeriSign & Co I was wondering if we couldn't issue the necessary certificates with a certificate authority of our own. I realize that they do not offer the trust hierarchy that commercial certificates do but I don't see why we would need that. Most of our clients have small businesses and only 20% of them even exchange data with us via email. So if we were to issue certificates for those 20% and our employees, that would enable us to use encrypted emails. Of course they would have to trust our certificate authority and thus once receive our public root certificate. But if we would hand them out to them (or install it) personally, they'd know that it really is our certificate. Is thery a huge security risk that I am missing here? As long as nobody has access to our certificate authority server nobody should be able to interfere with security, right? And the client certificates would be generated and handed out by us, as well... Please advise me if I am making an error in judgement here and thank you in advance.

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• Where in the stack is Software Restriction Policies implemented?

  - by Knox

  I am a big fan of Software Restriction Policies for Microsoft Windows and was recently updating our settings for this. I became curious as to where Microsoft implemented this technology in the stack. I can imagine a very naive implementation being in Windows Explorer where when you double click on an exe or other blocked file type, that Explorer would check against the policy. I call this naive because obviously this wouldn't protect against someone typing something in a CMD window. Or worse, Adobe Reader running an external application. On the other hand, I can imagine that software restriction policies could be implemented deep in the stack almost at the metal. In this case, the low level loader would load into memory the questionable file, but mark the memory in the memory manager as non-executable data. I'm pretty sure that Microsoft did not do the most naive implementation, because if I block Java using a path block, Internet Explorer will crash if it attempts to load Java. Which is what I want. But I'm not sure how deep in the stack it's implemented and any insight would be appreciated.

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• Mail queue directory stuck in IIS SMTP server

  - by Loftx

  Hi there, We have an IIS SMTP server which sends out a largish number of mails (4000 or so) in batches overnight, and recently we've seen mails get "stuck" in the queue directory. Normally restarting the SMTP service seems to fix this, but it's happened a few times so I'm looking for more information. We sent out around 12,000 emails last night in 3 batches of roughly 4000. Around 10 hours later there are still 2000 or so in the queue directory which don't seem to be leaving the queue. Any new mails which appear in the queue are picked up almost immediately and sent to their destination, but these 2000 or so don't seem to move. Looking at the date modified on the emails some match up with the time they were sent, but around 1000 of them have modified dates stretching up to now. e.g. there was one mail with a date in the message headers of 5:30 this morning, but it's date modified is 11:50 and there are 3 other messages with a date modified of 11:50, then 5 with 11:49, 2 with 11:45 stretching back for a few hours and all with actual message headers far earlier. The logs for the server look like this 11:54:52 127.0.0.1 EHLO - 250 11:54:52 127.0.0.1 MAIL - 250 11:54:52 127.0.0.1 RCPT - 250 11:54:52 127.0.0.1 DATA - 250 11:54:52 127.0.0.1 QUIT - 240 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 EHLO - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 MAIL - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 RCPT - 0 11:54:53 85.115.62.190 - - 0 11:54:53 85.115.62.190 DATA - 0 11:54:53 85.115.62.190 - - 0 11:54:54 85.115.62.190 - - 0 11:54:54 85.115.62.190 QUIT - 0 11:54:54 85.115.62.190 - - 0 All codes are either 250 or 240 or 0. I believe 250 and 240 indicate success, but I don't know what all the 0s are. Could someone with more experience of mail server troubleshooting give me a hand or tell me what to try next. Thanks, Tom

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• ubuntu - Best way of repartitioning a (running) production server

  - by egarcia

  I've got an (externally hosted) production server running Ubuntu LTS. It serves webpages (rails) and has an svn repository accesible through Apache, and a PostgreSQL db. I've got ssh access to the server and root privileges. Most of the "interesting" stuff is located in /var/ : svn repositories are inside /var/svn, web pages under /var/www, etc. Yesterday I was curious about how much disk space had it left, so I did the following: $ df -h Filesystem Size Used Avail Use% Mounted on /dev/md1 950M 402M 500M 45% / varrun 990M 64K 990M 1% /var/run varlock 990M 0 990M 0% /var/lock udev 990M 76K 989M 1% /dev devshm 990M 0 990M 0% /dev/shm /dev/md5 4.7G 668M 4.1G 15% /usr /dev/md6 4.7G 1.4G 3.4G 29% /var /dev/md7 221G 28M 221G 1% /home none 990M 4.0K 990M 1% /tmp My 'var' partition, which holds most of the interesting part, is only 4.7G big. The /home/ partition, on the other hand, is 221G, but it is mostly unused. I should have checked the disk layout before starting installing stuff. Ideally I would need /var/ and /home/ to be "switched" - /home/ should be the one with 4.7G, and /var/ the one with 221G. Is there a way to solve this without having to reinstall the whole thing?

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• Git fails to push with error 'out of memory'

  - by jwir3

  I'm using gitosis on a server that has a low amount of memory, specifically around 512 MB. When I try to push a large folder (happens to be a backup from an android phone), I get: me@corellia:~/Configs/$ git push origin master Counting objects: 18, done. Delta compression using up to 8 threads. Compressing objects: 100% (14/14), done. fatal: Out of memory, malloc failed MiB | 685 KiB/s error: pack-objects died of signal 13 error: failed to push some refs to 'git@dagobah:Configs' I've been searching the web, and notably found: http://www.mail-archive.com/[email protected]/msg01747.html as well as http://git.661346.n2.nabble.com/Out-of-memory-error-during-git-push-td5443705.html but these don't seem to help me for two reasons: 1) I am not actually out of memory when I push. When I run 'top' during the push, I get: 24262 git 18 0 16204 6084 1096 S 2 1.2 0:00.12 git-unpack-obje Also, during the push if I run /head/meminfo, I get: MemTotal: 524288 kB MemFree: 289408 kB Buffers: 0 kB Cached: 0 kB SwapCached: 0 kB Active: 0 kB Inactive: 0 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 524288 kB So, it seems that I have enough memory free, but it's actually still failing, and I'm not enough of a git guru to figure out what is happening. I would appreciate it if someone could give me a hand here and tell me what could be causing this problem, and what I can do to solve it. Thanks! EDIT: The output of running the ulimit -a command: scottj@dagobah:~$ ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 204800 max locked memory (kbytes, -l) 32 max memory size (kbytes, -m) unlimited open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 204800 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited

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• MySQL problem with many concurrent connections

  - by user48303

  Hi, here's a sixcore with 32 GB RAM. I've installed MySQL 5.1.47 (backport). Config is nearly standard, except max_connections, which is set to 2000. On the other hand there is PHP5.3/FastCGI on nginx. There is a very simple php application which should be served. NGINX can handle thousands of request parallel on this machine. This application accesses MySQL via mysqli. When using non-persistent connections in mysqli there is a problem when reaching 100 concurrent connections. [error] 14074#0: *296 FastCGI sent in stderr: "PHP Warning: mysqli::mysqli(): [2002] Resource temporarily unavailable (trying to connect via unix:///tmp/mysqld.sock) in /var/www/libs/db.php on line 7 I've no idea to solve this. Connecting via tcp to mysql is terrible slow. The interesting thing is, when using persistent connections (add 'p:' to hostname in mysqli) the first 5000-10000 thousand requests fail with the same error as above until max connections (from webserver, set to 1500) is reached. After the first requests MySQL keeps it 1500 open connections and all is fine, so that I can make my 1500 concurrent requests. Huh? Is it possible, that this is a problem with PHP FastCGI?

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• Why do most songs in my media collection play twice? - Corrupt media?

  - by Dean

  Problem: Whether I'm playing the media with Rhythmbox on Ubuntu, Winamp on Windows, or my Nokia N95's media player, most of my audio files (OK, maybe only 40%) play twice. Info: I have a 500GB external 2.5" WD HDD, with a 150GB primary FAT32 partition labeled MUSIC. Inside this, I have about 500 folders containing about 10,000 MP3/WMA/M4A/WAV files. I manage the drive using Ubuntu 9.10, and frequently copy data to/from it using RSYNC, or on windows, TotalCopy. The visual output is different in each media player, but it behaves as if the 1 MP3 has the same song on it twice, and as soon as it ends it begins again. Winamp shows that the song goes for 2x as long as it should, The N95's media player shows the progress bar off the right-hand-side of the screen when it begins playing (then jumps back to the left, then continues along...). Rhythmbox doesn't show me how long the song is, nor does the progress bar move along the screen. Plea: It seams to me somewhere along the lines my collection has become corrupt... but where? And how? and please someone tell me I can fix it!! TIA, Dean.

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• sudo or acl or setuid/setgid ?

  - by Xavier Maillard

  Hi, for a reason I do not really understand, everyone wants sudo for all and everything. At work we even have as many entries as there are way to read a logfile (head/tail/cat/more, ...). I think, sudo is defeating here. I'd rather use a mix of setgid/setuid directories and add ACL here and there but I really need to know what are the best practices before starting up. Our servers have %admin, %production, %dba, %users -i.e many groups and many users. Each service (mysql, apache, ...) has its own way to install privileges but members of the %production group must be able to consult configuration file or even log files. There is still the solution to add them into the right groups (mysql...) and set the good permission. But I do not want to usermod all users, I do not want to modify standards permissions since it could change after each upgrade. On the other hand, setting acls and/or mixing setuid/setgid on directories is something I could easily do without "defacing" the standard distribution. What do you think about this ? Taking the mysql example, that would look like this: setfacl d:g:production:rx,d:other::---,g:production:rx,other::--- /var/log/mysql /etc/mysql Do you think this is good practise or should I definetely usermod -G mysql and play with standard permissions system ? Thank you

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• Creating a tar file with checksums included

  - by wazoox

  Here's my problem : I need to archive to tar files a lot ( up to 60 TB) of big files (usually 30 to 40 GB each). I would like to make checksums ( md5, sha1, whatever) of these files before archiving; however not reading every file twice (once for checksumming, twice for tar'ing) is more or less a necessity to achieve a very high archiving performance (LTO-4 wants 120 MB/s sustained, and the backup window is limited). So I'd need some way to read a file, feeding a checksumming tool on one side, and building a tar to tape on the other side, something along : tar cf - files | tee tarfile.tar | md5sum - Except that I don't want the checksum of the whole archive (this sample shell code does just this) but a checksum for each individual file in the archive. I've studied GNU tar, Pax, Star options. I've looked at the source from Archive::Tar. I see no obvious way to achieve this. It looks like I'll have to hand-build something in C or similar to achieve what I need. Perl/Python/etc simply won't cut it performance-wise, and the various tar programs miss the necessary "plugin architecture". Does anyone know of any existing solution to this before I start code-churning ?

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• User-friendly program to create editable & searchable pdf files, like tax & application forms and su

  - by Nick Gorbikoff

  Hello. Can somebody recommend user-friendly program that will create ( or convert from Excel & Word, or OpenOffice) editable pdf forms. You know like tax forms, that some of us filled out. Where you can create a form with predefined format and stationary, but let user edit/fill out fields. I need something user-friendly that a regular person can use. I'm NOT looking for a pdf library ( I already use wkhtmltopdf for generating pdfs programmaticaly). The reason is that we have about 400 documents ( internal expense forms, traing forms, etc) in .doc and .xls format that we want to convert to editable pdf ( so that people don't have to fill them out by hand). Coding 400 templates and then converting them using some lib or command line tool - is not my idea of fun, espsecially since those form change all the time. I'd like to just give HR and Quality department the tool, so that they can maintain those documents. I looked at everything listed on this page ( http://www.cogniview.com/convert-pdf-to-excel/post/pdf-editing-creation-50-open-sourcefree-alternatives-to-adobe-acrobat/ ), but can't find what I need. Thank you!!!

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• Are there cloud network drives that let users lock files or mark them as "in use"?

  - by Brandon Craig Rhodes

  Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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• Openfiler crashing without cause or leaving any log messages

  - by user44725

  So my linux machine keeps crashing, without so much as a bye or a leave. I've tried and tried and failed again to work out whats happening. Any help would be much appreciated. Linux chai 2.6.29.6-0.24.smp.gcc3.4.x86_64 #1 SMP Tue Mar 9 05:06:08 GMT 2010 x86_64 x86_64 x86_64 GNU/Linux Openfiler Here is what the /var/log/messages file says at the time of the latest crash. Nothing that unusual - just greg logging in and out via samba. You'll notice there is a cron running for root every minute - ignore this - this isn't the issue either it was some check I've been doing to discover its problem. Jun 2 10:32:01 chai crond(pam_unix)[16529]: session closed for user root Jun 2 10:32:49 chai samba(pam_unix)[15454]: session opened for user greg by (uid=0) Jun 2 10:33:01 chai crond(pam_unix)[16537]: session opened for user root by (uid=0) Jun 2 10:33:04 chai crond(pam_unix)[16537]: session closed for user root Jun 2 10:41:40 chai syslogd 1.4.1: restart. Jun 2 10:41:43 chai syslog: syslogd startup succeeded That restart was called manually by hand - by clicking the restart button on the box. So basically messages isn't revealing many secrets. dmesg only shows from startup. If there is any output I should paste. Just say when and where and it'll be done. Thanks for your help! Tim

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• RRAS with DHCP when the IP pool is on a different subnet

  - by John B

  I run a small business network and the last couple of days I have been setting up some equipment to add VPN capabilities to our network. I've got the following set up: Windows 2008 R2 with RRAS - 172.22.200.50 Cisco RV082 router - 172.22.100.1 / 172.22.200.1 The Cisco router only support DHCP on a single class C network; 172.22.100.0/24. On the Cisco router I have set up an additional subnet; 172.22.200.0/24. The DHCP range is 172.22.100.200-254 When a PPTP connection comes in to the router, it is forwarded to my RRAS at 172.22.200.50. If I configure RRAS to assign IPs from a static pool on the 172.22.200.0/24 subnet everything works fine except the DNS suffix / search domain. However, if I set RRAS to use DHCP I am no longer able to contact any devices on the network. The IP I receive is on a different subnet (172.22.100.0/24). Is it possible to still use DHCP as the method of ip assignment in RRAS, even when the IP adresses assigned are in a different subnet? If yes, what piece of configuration am I missing to fix the VPN connection issues mentioned in the paragraph above. The reason I want RRAS with DHCP to work is because from what I have understood, this is the "only" way to hand out a DNS suffix to VPN clients. Any help on this matter is greatly appreciated!

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• Kindle (client) for Mac

  - by doug

  So we're clear, i'm talking bout the client/software version here--ie, that you install on your Mac or PC--not the device. The Kindle client was recently released for the Mac. I bought a couple of Kindle-edition books and i'm reading them using this client. Astonishingly, two features i consider to be more or less essential to any ebook reader are missing in the Kindle client, either that, or i can't find them: (i) text searching; and (ii) highlighting text. First, does anyone know how to access the search feature? I'm aware of the "Go To" button at the top middle of the reader window--the options in that menu when you click the button are: "Cover", "Table of Contents", "Beginning" and "Location." "Location" requires that you type in an integer (but it doesn't correspond to page number--e.g., typing "167" brought me to the table of contents), not a search term. Second, there's a button on the upper right-hand corner of the window "Show Notes and Marks" yet i can't find any way to highlight text. The only kind of "note" or "mark" i have been able to record is to "bookmark" a page by clicking the "bookmark" button also at the top of the window.

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• Uninstall php5 installed from source

  - by diegomichel

  I have tried to install php5 from source , and it worked... Then for some reason need to install the official packets, so i tried a make uninstall and for my surprise there is such make uninstall... so i tried delete all the installed files by hand. Then installed the official debian packages and it worked fine... till i need install sqlite module, which give me the following error: php --version PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/pdo_sqlite.so' - /usr/lib/php5/20090626/pdo_sqlite.so: undefined symbol: php_pdo_register_driver in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/sqlite.so' - /usr/lib/php5/20090626/sqlite.so: undefined symbol: php_pdo_register_driver in Unknown on line 0 PHP 5.3.1-5 with Suhosin-Patch (cli) (built: Feb 22 2010 22:46:05) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.3.0, Copyright (c) 1998-2009 Zend Technologies So i remember that manual install i did, and i think there is some old lib installed causing that problem, the bad thing is that there is not such make uninstall on the source code of php5... php-5.2.13 > make uninstall make: *** No rule to make target `uninstall'. Stop. I have tried reinstall and purge all php related packages via aptitude with not success. OS: Debian Squeeze. uname -a Linux desktop 2.6.32-trunk-amd64 #1 SMP Sun Jan 10 22:40:40 UTC 2010 x86_64 GNU/Linux Any idea how to fix that?

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• Apple Magic Trackpad 3-Finger Drop Lag

  - by activestylus

  After enabling three-finger dragging for my Trackpad, I notice that it drags well, but when I release there is about 1-2 seconds of lag before it actually drops. I understand this is supposed to be a feature so when you run out of space to drag, you have time to move your hand. But, for those of us powerusers, who move really fast, this is a BUG, not a feature. There should be some way to turn it off! For some perspective, I personally own a Fingerworks trackpad as well (the company Apple bought to make the Trackpad) and it does not suffer this problem. Drops are instantaneous no matter what program I am in. This is hugely frustrating for me, because I thought I was upgrading here and Apple's version does not perform as well as the Fingerworks model (which I purchased in 2004) I actually made a short video illustrating the problem, and why it is so frustrating for anyone who uses the pad as an artistic tool. Anyone here face this problem? If not, how would you recommend that I address Apple directly about this? PS - Already looked at this thread and the conclusion does not help me. I do not have one-finger drag enabled. PPS - I understand that for most people this is not an issue because they use the 'click' feature of the Trackpad. However, after years of using Fingerworks and not having to click ever, I find that it slows me down.

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• Excel Help: Data Input Help

  - by B-Ballerl

  Everyday I download data from a site that will have rows each filled with individual data for clients. I'm able to input the data into excel as a whole but after that I'm having trouble figuring out how to put it into a chart. For example Web visits time. So say Client 1 stayed for 5 min increasing his total time on the site to 20 min and Client 2 stayed for 0 min keeping his time of 10 min and they were both registered on new years eve, and R1's last login was today and R2's was yesterday. (R for some reason repersents Client, no idea why...). Client 3 hasn't been on since he registered keeping his total at 4 min So my data would look something like this for Today (20110104) R1,20101231,20110104,20 R2,20101231,20110103,10 R3,20101231,20101231,4 And this for the day before (201101030), R1,20101231,20110102,15 R2,20101231,20110103,10 R3,20101231,20101231,4 I get about 200+ client rows each day where even the names of the Client list are changing. Is it possible to import the data each day and fill it in a excel sheet where the Client number is off on the left hand side in a table, and the amount of time (Whole Number ex. 4) each day it spends on the site extend to the right under it's specific date see Picture? I've manage to create a manual sheet but have been unsucessful at getting excel to do any of it for me. Here are two pictures:

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• Puppet inventory service using puppetdb

  - by Oli

  I have 3 servers set up. A puppet master using passenger (puppet-server1), dashboard using passenger (puppet-server2) and puppetdb (puppet-server3). I cannot get the inventory service working in the dashboard. The puppet master is able to sign certs and hand out manifests. The nodes have checked in to the dashboard ok The puppetdb appears to be working - logs files as follows: 2012-12-13 17:53:10,899 INFO [command-proc-74] [puppetdb.command] [8490148f-865a-45c8-b5b5-2c8824d753dd] [replace facts] puppet-server3.test.net 2012-12-13 17:53:11,041 INFO [command-proc-74] [puppetdb.command] [dfcc5168-06df-41d4-9a97-77b4cd3f4a2b] [replace catalog] puppet-server3.test.net 2012-12-13 17:55:28,600 INFO [command-proc-74] [puppetdb.command] [b2cc0a96-0404-49f5-96ad-19c778508d3d] [replace facts] puppet-client2.test.net 2012-12-13 17:55:28,729 INFO [command-proc-74] [puppetdb.command] [4dc4b8f3-06df-4dad-a89a-92ac80447b99] [replace catalog] puppet-client2.test.net The puppet master has the following configured in puppet.conf [master] certname = puppet-server1.test.net storeconfigs = true storeconfigs_backend = puppetdb reports = store, http reporturl = http://puppet-server2.test.net/reports/upload The puppet master have the following configured in auth.conf #access for puppet dashboard facts path /facts auth yes method find, search allow dashboard The puppet dashboard has this configured in /usr/share/puppet-dashboard/config/settings.yml # Hostname of the inventory server. inventory_server: 'puppet-server3.test.net' # Port for the inventory server. inventory_port: 8081 The inventory is on as I see a link to the inventory in the dashboard server But I am getting this error: Inventory Could not retrieve facts from inventory service: SSL_connect SYSCALL returned=5 errno=0 state=SSLv3 read finished A clearly an SSL error - but I have followed the documentation and have no idea how to fix this. Can anyone help please? Oli

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• Are there cloud network drives that let users lock files or mark them as "in use"?

  - by Brandon Craig Rhodes

  Having spent several hours reading about the features and limitations of services like DropBox and Jungle Disk and the hundreds of competitors they seem to have (as though everyone with an AWS account these days goes ahead and writes a file sharing application just for fun), I have yet to find one that would let a team of people at a small business collaborate without stepping all over each other's toes. At a small business there are often many small documents per project — estimates, contracts, project plans, budgets — and team members frequently have to open and edit them, with all sorts of problems happening if two people edit a file at once. Even if a sharing service is smart enough to keep both versions of the file created, most small-business software (like word processors, spreadsheets, estimating software, or billing systems) has no way to compare — much less to merge! — the changes in two rival versions of a file that two people edited at the same time without each other's knowledge. So, my question: are their cloud-based file sharing solutions that not only provide a virtual network drive that people can access, but that also let users lock files — even if it's not a real lock but just a flag or indicator — that could possibly prevent remote workers from both editing the same file at once? Having one person wait for another person to finish editing is a very, very small inconvenience compared to the hour or more than it can take to compare two estimates by hand until you find and resolve the rival changes. Given this fact, I am surprised that almost none of the popular file sharing solutions seem to recognize this problem and provide some solution! Does anyone know of a service that does?

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• eAccelerator Issue - Cache Directory Empty.

  - by Tom

  Hi all, Hoping someone can give me a hand with this. I've recently installated eAccelerator 0.9.6.1 - On a CentOS LAMP server. Had it working fine, using the /tmp/accelerator as the cache directory. php.ini set up: zend_extension="/usr/local/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so" eaccelerator.shm_size="200" eaccelerator.cache_dir="/var/cache/eaccelerator" eaccelerator.enable="1" eaccelerator.optimizer="1" eaccelerator.check_mtime="1" eaccelerator.debug="0" eaccelerator.filter="" eaccelerator.shm_max="0" eaccelerator.shm_ttl="3600" eaccelerator.shm_prune_period="180" eaccelerator.shm_only="1" eaccelerator.compress="1" eaccelerator.compress_level="9" php -v output: PHP 5.2.12 (cli) (built: Feb 3 2010 00:34:28) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies with eAccelerator v0.9.6.1, Copyright (c) 2004-2010 eAccelerator, by eAccelerator with the ionCube PHP Loader v3.3.20, Copyright (c) 2002-2010, by ionCube Ltd. I had to remove the cache directory as I was testing something. Remade it, re-set permissions and found that eAccelerator was no longer creating cache files within the folder. I thought it might be down to ownership rights on the folder so chown'd it apache.apache and this made no difference. I recreated the directory in /var/cache instead and editted php.ini to point to the new cache dir location, chmod'd, chown'd etc. and still eAccelerator is not creating any of the cache files in the directory (just empty). Could someone suggest what I might be doing incorrectly here. I've read through numerous pages to try and troubleshoot the issue to no avail. Any help appreciated.

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• Port Forwarding failing only to Ubuntu servers from Draytek router

  - by Rufinus

  I know this is a kinda unusal question, but Draytek support (..which is very eager to solve the issue) seems to reach its limits. Scenario: Draytek Vigor Multiwan router with current firmware. Multiple WAN IP Aliases on one of the wan ports DMZ (or port forwarding doesnt matter) from wan ip alias to internal host currently i have two internal hosts: 192.168.0.51 (Ubuntu) 192.168.0.53 (Debian) both should be accessible from outside via one of the wan ip aliases. both are accessible with their internal ip's at all times (!) If the router gots restartet, both external ips are forwarding to its internal hosts. But after a few minutes up to 2 hours, the ubuntu host is no longer reachable via its external interface. The debian hosts on the other hand is reachable. In what does ubuntu differs from debian ? I know at least of one user with the exact same problem. see http://ubuntuforums.org/showthread.php?p=10994279 Any ideas ? TIA EDIT: via ping diagnostics directly on vigor, 192.168.0.53 is pingable, 192.168.0.51 is not. but both hosts are perfectly reachable from anywhere inside the network. if i restart ubuntu networking it works again for a short time.... i'm out of ideas.. EDIT 2: after further investigation, i noticed a ping from .51 to the network (or a host in the internet) is enough to make the port-forwarding working again. So i will add an Cronjob as a "keep-alive" ping. This will solve the problem, but the reason for this behaivor is still in the dark. Thanks to all commentors.

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• Installing WindowsAuthentication breaks authentication / web.config?

  - by Ian Quigley

  I have a clean Windows 2008 R2 box (on a VM) and have installed IIS 7.5 with default options. I then copied a website to it (from Windows 7, IIS 7) and after a little tweaking the website is working fine. The website is currently using and working with Anonymous Authentication. I have gone back to the Windows Components/Sever Manager, Roles - Security and ticked and installed Windows Authentication. When I check my server in IIS (top level above sites) - Authentication, I see Anonymous Authentication (enabled) ASP.NET Impersonation (disabled) Forms Authentication (disbaled) Windows Authentication (enabled) When I check my default website - Authentication, I see as above but "Retrieving status" and an error dialog saying There was an error while performing this operation. Details: Filename c:\inetpub\wwwroot\screwturnwiki\web.config Line number: 96 Error: This configuration section cannot be used in this path. This happens when the section is being locked at the parent level. Locking is either by default (overriderModeDefault="Deny"), or set explicity by a location tag with overrideMode="Deny" or the legacy allowOverride="False". I have tried hand editing the web.config with no success. UN-installing Windows Authentication happily returns my site to working with Anonymous Authentication, and allows me to enable/disable these three options. FYI. I am using ScrewTurnWiki with the Active Directory plug in.

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• Bad font anti-aliasing in Ubuntu

  - by Juliano

  I'm switching from Fedora 8 to Ubuntu 9.04, and I can't seem to get it to get a good font anti-aliasing to work. It seems that Ubuntu's fontconfig tries to keep characters in integral pixel widths. This makes text more difficult to read, when 1 pixel is too thin and 2 pixels is too thick. Check the image below. In Fedora, when fontconfig anti-aliasing is enabled, fonts have their thickness proportional to the font size. Below, the thickness is different for 8, 9 and 10pt sizes. In Ubuntu, on the other hand, even when anti-aliasing is enabled, all 8, 9 and 10pt sizes have 1 pixel thickness. This makes reading larges amount of text difficult. I'm using the very same home directory, and I already checked that X resources are the same in both systems: ~% xrdb -query | grep Xft Xft.antialias: 1 Xft.dpi: 96 Xft.hinting: 1 Xft.hintstyle: hintfull Xft.rgba: none GNOME settings: ~% gconftool-2 -a /desktop/gnome/font_rendering antialiasing = grayscale hinting = full dpi = 96 rgba_order = rgb So, the question is: What should I change in the new box (Ubuntu) in order to get anti-aliasing like in the old box (Fedora)?

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