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• swapping or trashing with vast amounts of unmapped pagecache

  - by Marco

  I'm using kubuntu jaunty (i386 32bit), kernel 2.6.28-13-generic. I've 4Gb of RAM, of which only 3317Mb are seen by the system (I guess because of the 32bit system). I'm seeing that the pagecache utilization is continually growing, up to the point that the system is unusable (after a few days). This happens also when I don't do anything (all user applications closed and the bare minimum of services enabled). If enabled, the system starts to use swap space (using it all in the end). Even if swap is disabled, disk activity becomes continuous, with the system unresponsive. For example, right now the system is working (albeit a tad slow), with only Firefox and wing ide running, and I have 2Gb cached with only 45Mb mapped: $ free total used free shared buffers cached Mem: 3346388 3247328 99060 0 8416 2117980 -/+ buffers/cache: 1120932 2225456 Swap: 2144668 519448 1625220 $ cat /proc/meminfo MemTotal: 3346388 kB MemFree: 97128 kB Buffers: 7872 kB Cached: 2120224 kB SwapCached: 413860 kB Active: 2304596 kB Inactive: 865984 kB Active(anon): 2279168 kB Inactive(anon): 830236 kB Active(file): 25428 kB Inactive(file): 35748 kB Unevictable: 32 kB Mlocked: 32 kB HighTotal: 2492940 kB HighFree: 5456 kB LowTotal: 853448 kB LowFree: 91672 kB SwapTotal: 2144668 kB SwapFree: 1625244 kB Dirty: 84 kB Writeback: 0 kB AnonPages: 629304 kB Mapped: 45768 kB Slab: 45600 kB SReclaimable: 21756 kB SUnreclaim: 23844 kB PageTables: 4468 kB NFS_Unstable: 0 kB Bounce: 0 kB WritebackTmp: 0 kB CommitLimit: 3817860 kB Committed_AS: 3735020 kB VmallocTotal: 122880 kB VmallocUsed: 9352 kB VmallocChunk: 66600 kB HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 4096 kB DirectMap4k: 16376 kB DirectMap4M: 888832 kB If I try to drop the caches, little happens: # sync ; echo 3 > /proc/sys/vm/drop_caches ; free total used free shared buffers cached Mem: 3346388 3220580 125808 0 3020 2100600 -/+ buffers/cache: 1116960 2229428 Swap: 2144668 519356 1625312 Right now I've vm.swappiness = 5, but I've tried also with 0 and 1 (without noticeable differences). I've also tried vm.vfs_cache_pressure = 50 and 150 (again, no differences). As I said the pagecache eats all memory even with swapping turned off. What is happening? How to avoid this?

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• How to make 7zip faster

  - by user34463

  I normally use winRAR over 7Zip simply because its faster and only a little less efficient with compression. I did a few tests on different filetypes and sizes comparing the 7zip and winRAR default settings on their normal compression and their best compression, and in a lot of cases winRAR was 50% faster and in some it was actually 100% faster. But, I do like FOSS more. So here are my questions: Is there a way to make 7zip speed up? I'd like it to at least be on par with rar's speed Is there a way to make recovery segments in 7zip like you can in rar? I didn't see any, but I guess it could be a command line thing. I tested winrar and 7zip using the latest stable version of each (4.something with 7zip). Is the 9.x beta release noticeably faster at compression? I'm talking about faster at a comparable setting in WinRAR, not just lowering to bare minimum compression. If it matters, I use a quad core intel i7 720 (1.6ghz)/(2.8ghz) with 4gb DDR3 ram, and the 64-bit version of 7zip.

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• Subversion Apache Ubuntu - Remote Access?

  - by Hollowsteps

  Okay, a couple days ago I built a bare bones kit into a machine. I've been running through tutorials to get it to work and right now I've gotten as far as making it available in my lan, hooray! However, I cannot access the repositories remotely. Any machine on the lan can easily access it through the hostname or, using 'outbound ip/hostname' or 'outbound ip/machine ip'. The machine can be pinged from a remote, non-lan machine and responds. I just can't get anyone into it outside of my lan. I've been trying to figure it out but I'm lost. I'm breaking a few rules and if any of these would be my problem, please indicate. I don't think I have a static IP (However I check my outbound IP whenever I do testing, is that not enough? It has stayed the same for 5+ days) I have not discussed this set-up with my service provider (Does Optimum Online block port 80? If so, can I just switch apache to listen on a different port?) I am in the DMZ of my router. This is what allowed it to be pinged remotely. For security reasons the machine that is in that zone is turned off most of the time until I can get it locked down. Any help would be appreciated, even if it's just a couple of words I could google to understand what I'm doing wrong. Tortoise SVN does not allow access remotely, but it does within the LAN as well.

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• Intel Core i7 QuadCore on HP Pavilion dv7 Overheating Issues

  - by kellax

  I bought a brand new HP notebook: HP Pavilion dv7-6b21em BeatsAudio edition. The notebook is about 2 months old and has pretty nasty overheating problem. I mainly use it for development however i do play some games. The disturbing thing is that the computer is loud on pretty simple tasks. Here are the specs: CPU: Intel Core i7-2670QM QuadCore ( 8 threads ) @ 2.20 GHz RAM: ( 8GB ) 2x 4GB @ 1066 HDD: 1TB 7200 GPU: ATI Radeon HD 6770M 1GB Dedicated DDR OS: Windows 7 64bit Enterprise I have an external monitor runing on VGA port an 22' Samsung SyncMaster S24B300 CPU Heat Statistics Platform: rPGA 988B (Socket G2) Frequency: cca. 3000 Mhz VID: 1.1809 - 1.2059 v Revision: D2 CPUID: 0x206A7 TDP: 45.0 Wats, Lithographu: 32 nm Heat: Tj. Max: 100*C, Power 4.5 - 5.9 Wats Core #0: 63*C Load on all is about 0 to 2% Core #1: 65*C Core #2: 66*C Core #3: 67*C I opened the notebook the fan is working fine there is no dust but still right now the fan is pretty loud even tho all i have open is FireFox. When i run a game the heat jumps to whopping 90-97*C. It has not shut down due to overheating yet but the loud fan is pretty annoying considering I'm not really doing anything stressfull. Is there anything i can do to fix this is it maybe a BIOS issue ? I have all drivers updated tho to the latest. I have very few background processes running consuming bare 2GB of RAM and about 2% of CPU. I had it serviced they said there is nothing wrong with it. But i feel that a Notebook that costs 1.2k Euros cant be like this.

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• Hardware Requirements & Tuning - Flash Media Server 3.5 Interactive

  - by Anthony Kanago

  I am trying to spec out a server to purchase (physically, not rented from someone like softlayer.com) to run an intranet instace of Flash Media Server 3.5 Interactive. In general, the server will likely be fielding somewhere on the order of 400 connections at a time at the upper limit. Of course, should this increase, we don't want to be stuck. While the decision is not final, we will likely be running the server on Red Hat rather than Windows. The server will be run on gigabit ethernet. I have two related questions: What sort of hardware would I need realistically to support this? What advice can you offer for settings in tuning FMS/the OS to be performant to this level? We are looking for a bare minimum that will run this effectively to save on costs. Realistically, the average number of connections will be fairly low (50-150) by comparison with that upper limit estimate. To reiterate: we just want to be cautious in not getting caught when we need more power, but we also need a low-cost solution (doesn't everyone?) and that may take priority. Windows and RedHat are the two officially supported operating systems. Since FMS is stated to be 32-bit only, I'm sticking with a 32-bit OS. The hardware requirements listed by Adobe on their website are: 3.2GHz Intel® Pentium® 4 processor (dual Intel Xeon® or faster recommended) 2GB of RAM (4GB recommended) 1Gb Ethernet card So what realistically do I need for those sorts of connection numbers, and what can I due to tune things up to get more out of less hardware? Thanks!

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• How can I explain to dspam that the user "brandon" is the same as "brandon@mydomain"

  - by Brandon Craig Rhodes

  I am using dspam for spam filtering by running the "dspamd" daemon under Ubuntu 9.10 and then setting up a Postfix rule that says: smtpd_recipient_restrictions = ... check_client_access pcre:/etc/postfix/dspam_everything ... where that PCRE map looks like this: /./ FILTER lmtp:[127.0.0.1]:11124 This works well, and means that all users on my system get all of their email, whether "dspam" thinks it is innocent or not, and have the option of filtering on its decisions or ignoring them. The problem comes when I want to train dspam using my email archives. After reading about the "dspam" command, I tried this on the files in my Inbox and spam boxes (which date from when I was using another filtering solution): for file in Mail/Inbox/*; do cat $file | dspam --class=innocent --source=corpus; done for file in Mail/spam/*; do cat $file | dspam --class=spam --source=corpus; done The symptom I noticed after doing all of this was that dspam was horrible at classifying spam — it couldn't find any! The problem, when I tracked it down, was that I was training the user "brandon" with the above commands, but the incoming email was instead compared against the username "brandon@mydomain", so it was running against a completely empty training database! So, what can I do to make the above commands actually train my fully-qualified email address rather than my bare username? I would like to avoid having to run "dspam" as root with a "--user" option. I would have expected that the "dspam" configuration files would have had an "append_domain" attribute or something with which to decorate local usernames with an appropriate email domain, but I can't find any such thing. When I used to use the Berkeley DB backend to "dspam", I solved this problem by creating a symlink from one of the databases to the other. :-) But that solution eventually died because the BDB backend is not thread-safe, so now I have moved to the PostgreSQL back-end and need a way to solve the problem there. And, no, the table where it keeps usernames has a UNIQUE constraint that prevents me from listing both usernames as mapping to the same ID. :-)

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• Erase just the free space on my hard drive

  - by Patriot

  I'm about to give away an older computer with just the Windows XP operating system intact and all other programs uninstalled. However, upon peeking at the "free space" with software called "Recuva", I notice lots of deleted things that could be recoverable. Some of these include sensitive data files, pdfs, and other personal items that I would not want retrieved. I ran a program called "Eraser" to try and overwrite that data, but it failed to do an adequate job. I also tried to do the job with "Glary Utilities" but it failed too. Short of installing a new, very cheap hard drive and re-installing the bare bones operating system, I'm out of ideas. EDIT - WOW!!! I was not really expecting this many GREAT ideas. My next question is this. If I go the DBAN route and truely wipe the hard drive, then restore my disc image (I use Acronis True Image) will it also restore the free space data? Does imaging just copy readable data? I have an old image of when the OS was first installed.

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• Windows Image Backup - renamed folder now restore cannot find any backups

  - by Schneider

  A while back I decide to create a couple of Windows Image Backups of my workstation at various points during installation from clean. While doing this I decided to rename the folders containing the VHDs from 'Backup <Date>' to something else of my choosing. I didn't bother testing at the time that the restore still worked. Now I come to use these backups for doing a bare metal restore to a different computer. The problem is restore cannot 'see' any of the backups. So I have deduced that maybe I need to rename them back to the 'Backup <Date>' pattern unfortunately I cannot determine the exact values that would have originally been used here. I have tried by best guest but the images still cannot be found. I have tried doing both a network and a usb hdd restore. No luck on either. P.S. I know I can retrieve files from within the VHDs, the problem is I am trying to save myself time of reinstalling lots of big applications... not trying to recover data.

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• How to make 7-Zip faster

  - by Matt

  I normally use WinRAR over 7-Zip simply because it's faster and only a little less efficient with compression. I did a few tests on different filetypes and sizes comparing the 7-Zip and WinRAR default settings on their normal compression and their best compression, and in a lot of cases WinRAR was 50% faster and in some it was actually 100% faster. But, I do like FOSS more. So here are my questions: Is there a way to make 7-Zip speed up? I'd like it to at least be on par with WinRAR's speed Is there a way to make recovery segments in 7-Zip like you can in WinRAR? I didn't see any, but I guess it could be a command line thing. I tested WinRAR and 7-Zip using the latest stable version of each (4-dot-something with 7-Zip). Is the 9.x beta release noticeably faster at compression? I'm talking about faster at a comparable setting in WinRAR, not just lowering to bare minimum compression. If it matters, I use a quad core Intel i7 720 (1.6 GHz)/(2.8 GHz) with 4 GB DDR3 RAM, and the 64-bit version of 7-Zip, and dual-boot Debian x64 5.0.4 and Windows 7 Home.

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• Windows 7 on an EEE PC 901 - Is it a practical change?

  - by Dave

  I am currently running WinXP on my EEE PC 901, and I'm happy to say that it runs really well. But this did not come with out significant manipulation of the OS. Here's the basic steps I took: Install XP Modify registry to install Install bare essential drivers Relocate page file to d:\ (remember, this model has two SSD's, one roughly 3.6gb, and the other roughly 16gb - XP won't run on the bigger drive, only the smaller one) Install remaining drivers skip normal updates, install service pack 2 straight away. modify system registry to place service pack backup folder into new Program Files directory on D drive (where software is being installed). Change My Documents folder to sit on D drive. Install .net framework Install remaining updates and service pack 3 (the hidden backup folders in the c:\Windows directory are deleted after every update as well as the contents of the service pack downloads folder in order to continually free up space). I have also found that Disktrix UltimateDefrag to be brilliant at keeping the system clean and tidy. This is roughly the order I did things in. In this configuration the machine works really well. QUESTION: Can this kind of configuration be implemented with Windows 7 to achieve the same result on this machine? Thanks in advance. Dave.

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• How do I resolve BSOD: PAGE_FAULT_IN_NONPAGED_AREA?

  - by Burnzy

  I have been trouble shooting this for a few days and cannot fix this anyhow. Computer specifications Mobo: ASUS Sabertooth X58 LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard CPU: Intel(R) Core(TM) i7 CPU 920 (Bloomfield) @ 2.67 ( no OC ) RAM: 6144MB RAM GPU: 2x NVIDIA GeForce GTS 250 1Go in SLI (sli is not enabled anyway at the moment anyway) Drives: OCZ RevoDrive OCZSSDPX-1RVD0120 PCI-E x4 120GB PCI Express MLC Internal SSD [RAID-0]. (I know this could potentilly cause trouble but I had the BSOD before using this drive) Seagate Barracuda 7200.11 ST31500341AS 1.5TB 7200 RPM 32MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive - Bare Drive Click here for a log of a crash I just had. Click here for a log of a crash I had 30 minutes later, note that it's another driver. Some info Occurence: It seems pretty random so far, haven't noticed any kind of pattern I tried: Windows memory diagnostic (went smoothly at 1066mhz) As I said, it was still happening on my HDD, so when I bought the revodrive I install a new OS on there and still got the error, I believed it happened and I had no drivers installed at that point (not 100% sure) Change the following registry value to 1 (true): HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager \MemoryManagement\ClearPageFileAtShutdown Tried to lower even more ram clock Made sure ram timing was set to recommended by manufacturer Verified if motherboard was in good physical condition (yes and its brand new) There is one thing to note, when I got the new motherboard, I installed the new drivers WITHOUT formatting and the I removed the motherboard drivers that I could remove from the control panel (pretty much the first things that have been installed). Could this cause an issue even ON THE OTHER drive (revodrive). Hopefully someone can help me, I am getting tired of this, spending so much money and cannot get this to work correctly. If you need any other information let me know, thank you!

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• Solaris SMF to Upstart on RHEL6

  - by aaa90210

  I am planning a migration from Solaris/x86 to RHEL6. Part of this migration will be migrating services from SMF to the RHEL6 equivalent, which appears to be upstart. While init.d scripts still seem to be supported, I want to take advantage of a more sophisticated init daemon, especially for features like job supervision (restarting etc). I would like to gather some thoughts on a few points: 1) Is upstart an adequate job supervisor, i.e. does it preclude the need for stand-alone managers like daemontools/supervise? 2) Upstart scripts seem very bare-bones compared to a typical init.d script. If I was porting an init.d script to Upstart, is it OK to just "exec /etc/init.d/myjob start"? This include RHEL installed programs like httpd. 3) Does upstart do anything is regards to pid files, and what are it's expectations in regards to the forking model of the process? 4) Are there any straightforward guides to the process management aspect of Upstart...and by that I mean the conditions around controlling restarting? e.g. how many times to restart the process before it goes into a maintenance state, or to ignore errors/core dumps in child processes of the supervised process. Any other relevant ideas or guides would be appreciated. TIA

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• Running git-svn with cron results in garbage in .git

  - by Paul

  I've setup a git-svn repo with cron to fetch from the svn repo daily. I have a script to do the fetching, and this is what is invoked by cron. Everything is fine with the repo, and the script works fine when executed manually. However, when it runs under cron, empty files get dropped into the .git directory. The files have names that look like they are some base64 output, e.g. juTrvjP6m8 and kcKf3hu3b4. Two of these files show up for every cron run. I thought these might be commit hashes, but they're not, git-show says it's an unknown revision. I set-up the repo as follows: git svn init http://svn.ip.addr/repo git svn fetch svn-remote My script looks like this: cd /gitsvn/dir git svn fetch svn-remote git svn push pub The last line pushes the repo to a separate (bare) public repo from which others can clone. I'm piping the output from the cron job to a file, which looks like this: fatal: unable to run 'git-svn' Counting objects: 21, done. Delta compression using up to 2 threads. Compressing objects: 100% (10/10), done. Writing objects: 100% (11/11), 59.08 KiB, done. Total 11 (delta 8), reused 0 (delta 0) To /gitpub/repo.git 360faf5..a153b0d trunk -> trunk The line "fatal: unable to run 'git-svn'" is alarming, but the fetch seems to go ahead anyway. Any suggestions? Where are these empty garbage files coming from, and how to stop them? Am I in for bigger problems in the future? BTW, I'm using git 1.6.3.3.

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• The best LCD monitors for reading text?

  - by Xeoncross

  I have been using an 19" Acer AL1916A B for several years now. While possibly failing in other areas - the text was incredibly sharp. Which is very important for someone like me that spends all day writing code. My eyes are very finely tuned and I can see refresh rates and even the smallest pixel overflows from anti-aliasing. Unfortunately it finally died. I then tried a 19" widescreen Acer X193w+ and found that the text was much less sharp. I also tried a 19" widescreen Samsung 920nw and was also disappointed. (by the way, widescreen is a great invention for companies - the same price for less screen!). I am looking for a couple of options of LCD's that hands-down render text ultra sharp and clear. This isn't subjective - an LCD either has sharp text or it doesn't. Anyone with delicate eyes can see the difference and knows what I'm talking about. Please also bare in mind that you're vision can adjust to a given screen; rendering your judgment biased if you do not constantly use other monitors also. If you use windows with ClearType enabled please do not reply.

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• Git push over http (using git-http-backend) and Apache is not working

  - by Ole_Brun

  I have desperately been trying to get push for git working through the "smart-http" mode using git-http-backend. However after many hours of testing and troubleshooting, I am still left with error: Cannot access URL http://localhost/git/hello.git/, return code 22 fatal: git-http-push failed` I am using latest versions of Ubuntu (12.04), Apache2 (2.2.22) and Git (1.7.9.5) and have followed different tutorials found on the Internet, like this one http://www.parallelsymmetry.com/howto/git.jsp. My VHost file currently looks like this: <VirtualHost *:80> SetEnv GIT_PROJECT_ROOT /var/www/git SetEnv GIT_HTTP_EXPORT_ALL SetEnv REMOTE_USER=$REDIRECT_REMOTE_USER DocumentRoot /var/www/git ScriptAliasMatch \ "(?x)^/(.*?)\.git/(HEAD | \ info/refs | \ objects/info/[^/]+ | \ git-(upload|receive)-pack)$" \ /usr/lib/git-core/git-http-backend/$1/$2 <Directory /var/www/git> Options +ExecCGI +SymLinksIfOwnerMatch -MultiViews AllowOverride None Order allow,deny allow from all </Directory> </VirtualHost> I have changed the ownership of the /var/www/git folder to root.www-data and for my test repositories I have enabled anonymous push by doing git config http.receivepack true. I have also tried with authenticated users but with the same outcome. The repositories were created using: sudo git init --bare --shared [repo-name] While looking at the apache2 access.log, it appears to me that WebDAV is trying to be used, and that git-http-backend is never fired: 127.0.0.1 - - [20/May/2012:23:04:53 +0200] "GET /git/hello.git/info/refs?service=git-receive-pack HTTP/1.1" 200 207 "-" "git/1.7.9.5" 127.0.0.1 - - [20/May/2012:23:04:53 +0200] "GET /git/hello.git/HEAD HTTP/1.1" 200 232 "-" "git/1.7.9.5" 127.0.0.1 - - [20/May/2012:23:04:53 +0200] "PROPFIND /git/hello.git/ HTTP/1.1" 405 563 "-" "git/1.7.9.5" What am I doing wrong? Is it an issue with the version of git and/or apache that I am using perhaps? BTW: I have read all the git http related questions on ServerFault and StackOverflow, and none of them provided me with a solution, so please don't mark this as duplicate.

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• Monitoring / metric collection for system collectives that change a lot in time (a.k.a. cloud)

  - by Florin Andrei

  When your server fleet doesn't change a lot in time, like when you're using bare-metal hosting, classic monitoring and metric collection solutions (Nagios, Munin) work well. But if the number of systems varies a lot in time, and may in fact vary rapidly, classic software is more difficult to setup and use. E.g., trying to make Nagios (monitoring) keep up with a rapidly evolving cloud infrastructure can be cumbersome. Same for Munin (metric collection). It's not just the configuration, but the way the information is conveyed to the user, or displayed, is inadequate for the cloud. What are some possible alternatives that work well with the cloud? The goals are to collect and display metrics (analog to Munin), and generate alerts when certain metrics go out of bounds or when certain services are unavailable (analog to Nagios), and do everything in a cloud-friendly manner. Some cloud providers offer monitoring / metric collection as services, but not always, and if you use more than one provider you don't want to become too dependent of just one vendor. So provider-independent solutions are required. EDIT: I am asking this question in a general fashion - not limited to any given cloud infrastructure (like OpenStack), but in the general case of using arbitrary cloud providers.

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• Setting up Mako with Cherrypy on nginx through FastCGI

  - by xuniluser

  I'm trying to use TemplateLookup from Mako, but can't seem to get it to work. Layout of the test site is: /var/www main.py templates/ index.html Nginx's config is setup as: location / { fastcgi_pass 127.0.0.1:8080; fastcgi_param SERVER_NAME $server_name; fastcgi_param SERVER_PORT $server_port; fastcgi_param SERVER_PROTOCOL $server_protocol; fastcgi_param PATH_INFO $fastcgi_script_name; fastcgi_param REQUEST_METHOD $request_method; fastcgi_param QUERY_STRING $query_string; fastcgi_param CONTENT_TYPE $content_type; fastcgi_param CONTENT_LENGTH $content_length; fastcgi_pass_header Authorization; fastcgi_intercept_errors off; } Cherrypy's config has: [global] server.socket_port = 8080 server.thread_pool = 10 engine.autoreload_on = False tools.sessions.on = True A simple cherrypy setup in main.py seems to work fine. import cherrypy class Main: @cherrypy.expose def index(self): return 'Hello' cherrypy.tree.mount(Main(), '/', config='config') Now, if I modify this to use Mako's template lookup, I get a 500 error. I know it has something to do with serving static files, but I've tried over a dozen different configurations accoring to the cherrypy wiki, but none of them work. Here's a bare setup I have for the templates: import cherrypy from mako.template import Template from mako.lookup import TemplateLookup templates = TemplateLookup(directories=['templates'], output_encoding='utf-8') class Main: @cherrypy.expose def index(self): return templates.get_template('index.html').render(msg='hello') cherrypy.tree.mount(Main(), '/', config='config') Does anyone know how I can get this to work ?

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• Selective Pointer device remapping in linux

  - by user6368

  I just got an HP 2710p (hp tablet, with digitizer), and I've played around with linux for a while now, and thought I would go ahead and install it. Everything works fine, excepting normal tablet functions, which is to be expected. I'm working on the screen rotation, and there are on-screen keyboards, etc, but I'm having issues with the stylus. I can tap and left click with the stylus as normal, but the side button (which in windows functions as a right mouse button) appears as a 'button 2' to xev (a middle/scroll wheel button). I can switch 'button 2' and 'button 3' universally using xmodmap, but I'd like to do so exclusively for stylus so I don't screw up regular pointing devices. Altering xorg.conf (which is surprisingly bare) with the recommended sections (adding sections for each of the stylus buttons) does nothing. I'm running crunchbang, which is an ubuntu/debian varient with openbox as the windows manager. Thanks Also, as a seperate note, does anybody know how to detect when I rotate and/or latch the lid shut? I was thinking maybe I could run a script to switch the buttons when I close it, but I can't find any information.

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• postfix (for sending mail only) multiple domain setup

  - by seanl

  I have the following problem, I have a Centos 5.4 VPS hosting a few nginx sites (some static, some cakephp), I would like to be able to send email from each sites contact page through postfix to my google apps hosted email (different accounts for each site) so that apps can then send out an auto email to the person filling in the contact form etc I have a bare-bones postfix installation with the following added into the main.cf config file. from using this guide virtual_alias_domains = hash:/etc/postfix/virtual_alias_domains virtual_alias_maps = hash:/etc/postfix/virtual_alias_maps (both of these files have been converted into db files using postmap) I have configured DNS correctly for each site and setup SPF records. (I'm aware R-DNS will still reference my actual hostname not the domain name and cause a possible spam issue but one thing at a time) I can telnet localhost and the helo localhost so that I can send a command line email from an address in the virtual_alias_domains to an email in the virtual_alias_maps file which seems sends without giving an error but it is sending to my local linux account not the email address specified. my question is am i approching this the wrong way in terms of the virtual alias mapping or is this even possible to do in the manner im trying. Any help is greatly appreciated thanks. my postconf -n outlook looks like this alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix debug_peer_level = 2 html_directory = no inet_interfaces = localhost mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost myhostname = myactual hostname mynetworks = 127.0.0.0/8 myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES sample_directory = /usr/share/doc/postfix-2.3.3/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550 virtual_alias_domains = hash:/etc/postfix/virtual_alias_domains virtual_alias_maps = hash:/etc/postfix/virtual_alias_maps

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• VMWare Host Not Responding - VMs are Disconnected (ESXi 3.5)

  - by EyeonTech

  I have inherited a VMWare environement ESX v3i 3.5. I am not fluent with VMWare ESXi so bare with me. Two days ago, when I opened Virtual Centre, one of the Hosts showed up as Not Responding. The error I am seeing is:----- Unable to acquire licenses because license source is unavailable: The license manager has not been started yet, the wrong port@host or license file is being used, or the port or hostname in the license file has been changed. What I have tried: I have Stopped and Started the license server within the application. When I do this, I am able to disconnect the host in Virtual Centre and reconnect. This brings the host back online, but a few minutes later, the host goes to a not responding state again. I have rebooted the server with the Licensing software installed. While browsing Google, I have not been able to find any steps I feel comfortable performing and I would like the opinion of the VMWare pros. Where are the log files I should be looking at to correctly determine what is going on? Has anyone seen this behaviour and how did you resolve it? Thank you

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• How can I find files added to the system within X minutes of a specific time?

  - by Jack W-H

  I have done a fresh install of Mac OS X Mountain Lion today on a new MacBook. Because this was a new install, when I finally got round to configuring some of my own developer things, I was surprised to find some app had installed a binary into /usr/local/bin - a single binary called galileod. Interestingly, I can't find anything online about galileod. I had only installed the bare minimum of software at this point. Looking in the file columns I can see Date Modified was 9th November 2012, but Date Added to the system was today at 17:01. It's now 10:20PM and I can't remember which software I was installing at that point. So how do I find out which other files were installed to the system within, say, 5 minutes either side of 17:01? EDIT: I found out what galileod was by running galileod --help - it is a binary used with Fitbit to communicate with the USB dongle. So that's the mystery solved - but it would still be interesting to know how to find files added within X minutes of a timeframe for future reference.

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• USB Device Not Recognized

  - by Franky Chanyau

  Ok this one gets a little bit complicated but bare with me :D A client brought her computer in to be fixed about a week ago, she says she tried charging a new phone she bought from china and immediately after her usb keyboard and mouse stopped working (typical). I had a quick look at it but because I did not have time, I did a simple system restore and it seemed as if the issue was fixed. I promptly sent it back to her but a few days back she called saying that the issue has returned. Turns out the computer was riddled with some virus that also corrupted her XP install so I had to format the whole thing(yes I tried repairing). I hoped that the format would fix the keyboard and mouse issue but the whole thing has escalated and the computer will throw the "USB Device not recognized" error when I plug anything into the many usb ports it has. I have installed all the drivers (including the chip set drivers) for the pc and even tried the unplugging from the power for a while trick, still no luck. I am sure it is not a hardware issue, but may be wrong. This is way over my head. Can anyone help? Computer: HP Compaq DC7100, Intel Pentium 4, 512mb RAM OS: Windows XP Professional SP2

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• how do you add an A record for a root domain

  - by nbv4

  this seems really simple, but I can't figure it out. I'm using xname.org since it's free and I own a bunch of domains spread over a few different registrars. The setup I desire is very simple: one A record that points the bare domain name to my server, plus a wildcard CNAME record pointing all subdomains to the same server. So if the user goes to domain.com it will point them to 285.24.435.75, if they go to www.domain, blah.domain.com, or any other sub domain, they'll get sent to 285.24.435.75. All the examples I read on the internet about setting up A records all have the A record set to a subdomain such as www. WWW is deprecated so I want to have noting to do with it. Currently my xname.org zone looks like this: $TTL 86400 ; Default TTL domain.com. IN SOA ns0.xname.org. nbvfour.gmail.com. ( 2010052503 ; serial 10800 ; Refresh period 3600 ; Retry interval 604800 ; Expire time 10800 ; Negative caching TTL ) $ORIGIN domain.com. IN NS ns2.xname.org. IN NS ns0.xname.org. IN NS ns1.xname.org. @ IN A 65.49.73.148 * IN CNAME domain.com The '@' symbol is something that the godaddy domain interface uses to mean "this root domain', but that may have been specefic to that interface and has no meaning here. Before I had a 'www' entry in the A rcords and it worked in the sense that I could ping 'www.domain.com' and it returned a response, but pinging the root domain 'domain.com' returned "no host found".

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• Problem restoring from tar backup: why are there /dev/disk/by-id/ symlinks and how can I avoid them?

  - by SK.

  Hello, I'm trying to make a bare-bone backup system with the most basic tools available on openSUSE 11.3 (in this case: bash, fdisk, tar & grub legacy) Here's the workflow for my scripts: backup.sh: (Run from external system, e.g. LiveCD) make an fdisk script ($fscript) from fdisk -l's output [works] mount the partitions from the system's fstab [works] tar the crucial stuff in file.tgz [works] restore.sh: (Run from external system, e.g. LiveCD) run fdisk $dest < $fscript to restore partitioning [works] format and mount partitions from system's fstab [fails] extract from file.tgz [works when mounting manually] restore grub [fails] I have recently noticed that openSUSE (though I'm sure it has nothing to do with the distro) has different output in /etc/fstab and /boot/grub/menu.lst, more precisely the partition name is for example "/dev/disk/by-id/numbers-brandname-morenumbers-part2" instead of "/dev/sda2" -- but it basically is a simple symlink. My questions about this: what is the point of such symlinks, especially if we're restoring on a different disk? is there a way to cleanly prevent the creation of those symlinks and use the "true" /dev/sdx everywhere instead? if the previous is no, do you know a way to replace those symlinks on the fly in a text file? I tried this script but only works if the file starts with the symlink description (case of fstab, not menu.lst): ### search and replace /dev/disk/by-id/... to /dev/sdx while read oldVolume rest; do # get first element, ignore rest of line if [[ "$oldVolume" =~ ^/dev/disk/by-id/.*(-part[0-9]*$)? ]]; then newVolume=$(readlink $oldVolume) # replace pointer by pointee, returns "../../sdx" echo /dev/${newVolume##*/} $rest >> TMP # format to "/dev/sdx", write line else echo $oldVolume $rest >> TMP # nothing to do fi done < $file mv -f TMP $file # save changes I've had trouble finding a solution to this on google so I was hoping some of the members here could help me. Thank you.

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• Looking to replace Ghost with FSArchiver or Clonezilla, few questions about capabilities

  - by Daniel Wright

  I work for a PC Repair company and we are looking into setting up a dedicated machine with externally accessible SATA bays to clone harddrives as a safety net incase something goes wrong during a repair. We currently use a SATA/PATA to USB bridge called MagicBridge and Norton Ghost on any workstation, but we're looking to move away from Ghost. We have a computer with a large RAID5 array with Windows Server 2008 Standard currently installed, but this can be replaced with a flavour of *nix. I have some experience with Clonezilla, but FSArchiver also seems like a suitable replacment too. My Head Technician wants to know if my chosen solution (probably Clonezilla or FSArchiver, but I'm open to free suggestions) is capable of: Cloning a degraded RAID, such as a single drive from a RAID1 mirror without complaining Producing images that are easily mountable (he'd prefer them to be mountable in Windows, but if there is no other easy way, *nix should be fine) akin to Ghost Explorer so individual files can be restored as well as being able to do bare metal restores. My apologies for wordiness but I wanted to be thorough in my explaination. Thanks for any suggestions or tips :) EDIT: I've just found out that Clonezilla has a workaround for cloning RADI1 drives EDIT2: Found the answer to both of my questions, aparently I wasn't phrasing my searches right, could this question be deleted please?

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