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  • Building a PC, advice on SSD/Hybrid Hard Drives

    - by Jamie Hartnoll
    I am looking at building a new PC, it's mainly for office (graphics heavy) use and programming. Looking for good performance with opening and closing programs and files as well as a fast boot. I plan to have 3 primary hard drives Windows 7 Programs (photoshop etc) Current Files (There'll also be a large storage capacity back up drive, but this will be the Seagate drive I already have.) So, my question is, looking at standard "old fashioned" hard drives and SSD drives, obviously there's a massive price difference. I have been looking at drives like this: http://www.ebuyer.com/268693-corsair-120gb-force-3-ssd-cssd-f120gb3-bk-cssd-f120gb3-bk and this: http://www.ebuyer.com/321969-momentus-xt-750gb-sata-2-5in-7200rpm-hybrid-8gb-ssd-in-st750lx003 Having no experience of using either I don't know what's the most efficient thing to go for. Clearly the SSD will have better performance, but: If, for example, I had an SSD for Windows (say about 100gB), that would clearly give me the boot speed I want, then I guess my real questions are: If I were to buy one more SSD, would it give the greatest improvement on standard performance if used to store programs, or currently used files? Given that the OS is on an SSD, should I not bother with the 3 drives and instead, partition that Hybrid drive to store programs and currently used files on it? Obviously, option two is cheaper and option one could cause me storage issues, but that's when I can dump files I am not currently using onto another drive. Any, I am open to suggestions... so what do you suggest?!

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  • Linux apache developing configuration

    - by Jeffrey Vandenborne
    Recenly reinstalled my system, and came to a point where I need apache and php. I've been searching a long time, but I can't figure out how to configure apache the best way for a developer computer. The plan is simple, I want to install apache 2 + mysql server so I can develop some php website. I don't want to install lamp though, just the apache2, php5 and mysql. The problem that I've been looking an answer for is the permissions on the /var/www/ folder. I've tried making it my folder using the chown command, followed by a chmod -R 755 /var/www. Most things work then, but fwrite for example won't work, because I need to give write permissions to everyone, unless I change my global umask to 000 I'm not sure what I can do. In short: I want to install apache2, php5, mysql-server without using lamp, but configured in a way so I can open up netbeans, start a project with root in /var/www/, and run every single function without permission faults. Does anyone have experiences or workarounds to this? Extra: OS: Ubuntu 10.04 ARCH: x86_64

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  • Cannot Resolve Host Or Access Website Through Router

    - by Boris_yo
    This is weird. I am on Windows XP with Edimax BR 6204Wg. I have 3 devices - 2 laptops and 1 smartphone. 1st laptop and smartphone are connected through WiFi to router and 2nd laptop is connected through LAN to router. Before firmware upgrade i did not try to access website but after firmware upgrade to latest version: http://www.edimax.eu/en/support_detail.php?pd_id=11&pl1_id=3#02 i had problems resolving host, pinging, tracerting and accessing website. Sometimes ping and tracert work but i cannot access website and sometimes i can access website but ping and tracert do not work. Weird? I downgraded to previous version and no changes. If i can no longer access that website through Internet Explorer, i can access it in Firefox. I tried deleting cookies, clearing cache and that seem not make difference. Switching LAN port did not make difference. When i disconnect router and connect laptop through LAN to internet modem, everything is normal. I tried resetting router, resetting to factory default settings and all did not help. At the moment i can access website on laptop connected through LAN from Firefox and Internet Explorer, but on my smartphone i can access website only with Opera but not with built-in browser and Skyfire. UPDATE: I just could only access with Internet Explorer but not with other browsers on my PC. Minutes later i could access with all browsers. But on smartphone i could only access with Opera and not with other browsers. I am confused. I also determined that sometimes i can access and sometimes can't. What is also weird is that when ping and tracert cannot resolve host, i still am able to access website.

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  • Self-Resetting Power Strips?

    - by Justin Scott
    We are about to deploy a number of secure kiosks into an environment where they may be prone to lightning strikes and power surges on a somewhat regular basis (southern Florida in a place where the existing electrical infrastructure is, shall we say, a bit out of date). Ideally we would use battery backups on each system, but it's not in the budget. We plan to use a standard power strip with a circuit breaker built-in to protect the computers, but management has asked if there is a power strip that can reset itself after the breaker has been tripped. I've looked around and wasn't able to find such a beast, and it seems to me that it would probably be a safety issue for such a product to exist (e.g. if something plugged into the strip is drawing a lot of current and trips the breaker, you wouldn't want that resetting itself to prevent a possible fire). Nevertheless, if anyone has experience with such a product or can point me in the direction of something that would allow the breakers to be reset automatically or remotely (we don't want to have to send someone to each kiosk every time there is a power surge) I would appreciate any tips.

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  • What is the difference between the Linux and Linux LVM partition type?

    - by ujjain
    Fdisk shows multiple partition types. What is the difference between choosing 83) Linux and 8e) Linux LVM? Choosing 83) Linux also works fine for using LVM, even creating a physical volume on /dev/sdb without a partition table works. Does picking a partition type in fdisk really matter? What is the difference in picking Linux or Linux LVM as partition type? [root@tst-01 ~]# fdisk /dev/sdb WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): l 0 Empty 24 NEC DOS 81 Minix / old Lin bf Solaris 1 FAT12 39 Plan 9 82 Linux swap / So c1 DRDOS/sec (FAT- 2 XENIX root 3c PartitionMagic 83 Linux c4 DRDOS/sec (FAT- 3 XENIX usr 40 Venix 80286 84 OS/2 hidden C: c6 DRDOS/sec (FAT- 4 FAT16 <32M 41 PPC PReP Boot 85 Linux extended c7 Syrinx 5 Extended 42 SFS 86 NTFS volume set da Non-FS data 6 FAT16 4d QNX4.x 87 NTFS volume set db CP/M / CTOS / . 7 HPFS/NTFS 4e QNX4.x 2nd part 88 Linux plaintext de Dell Utility 8 AIX 4f QNX4.x 3rd part 8e Linux LVM df BootIt 9 AIX bootable 50 OnTrack DM 93 Amoeba e1 DOS access a OS/2 Boot Manag 51 OnTrack DM6 Aux 94 Amoeba BBT e3 DOS R/O b W95 FAT32 52 CP/M 9f BSD/OS e4 SpeedStor c W95 FAT32 (LBA) 53 OnTrack DM6 Aux a0 IBM Thinkpad hi eb BeOS fs e W95 FAT16 (LBA) 54 OnTrackDM6 a5 FreeBSD ee GPT f W95 Ext'd (LBA) 55 EZ-Drive a6 OpenBSD ef EFI (FAT-12/16/ 10 OPUS 56 Golden Bow a7 NeXTSTEP f0 Linux/PA-RISC b 11 Hidden FAT12 5c Priam Edisk a8 Darwin UFS f1 SpeedStor 12 Compaq diagnost 61 SpeedStor a9 NetBSD f4 SpeedStor 14 Hidden FAT16 <3 63 GNU HURD or Sys ab Darwin boot f2 DOS secondary 16 Hidden FAT16 64 Novell Netware af HFS / HFS+ fb VMware VMFS 17 Hidden HPFS/NTF 65 Novell Netware b7 BSDI fs fc VMware VMKCORE 18 AST SmartSleep 70 DiskSecure Mult b8 BSDI swap fd Linux raid auto 1b Hidden W95 FAT3 75 PC/IX bb Boot Wizard hid fe LANstep 1c Hidden W95 FAT3 80 Old Minix be Solaris boot ff BBT 1e Hidden W95 FAT1 Command (m for help):

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  • Is the sysadmin/netadmin the defacto project planner at your organization?

    - by user31459
    At my company it has somehow over the past few years slowly become my job to come up with a project plan, milestones and time lines for deployment of developer applications. Typical scenario: My team receives a request for a new website/db combo and date for deployment. I send back a questionnaire for the developer to fill out on all the reqs for the site (ssl? db? growth projections etc.) After I get back all the information, the head of development wants a well developed document of what servers will it live on why those servers what is the time line for creating the resources step-by-step SOP for getting the application on the server and all related resources created (dns, firewall, load balancer etc.) I maybe just whining but it feels like this is something better suited to our Project Management staff (which we have) or to the developer. I understand that I need to give them a time-line on creating the resources, but still feel like this is overkill. We already produce documentation on where everything lives and track configuration changes to equipment. How do other sysadmin folks handle this?

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  • Experiences in Upgrading from Exchange 2003 to Exchange 2010

    - by gWaldo
    I'm currently running Exchange 2003 SP2 Cluster on a Server 2003 AD Forest (in native 2003 mode), and we beginning to plan the upgrade to Server 2008 AD and Exchange 2010. We have two main sites, one middle-sized office, and a couple of smaller sites which have DCs (which may be RODCs after the upgrade). Currently all of our Exchange cluster is in my main site, but we are considering using the new datastore paradigm for load-balance/failover at the other large site, but this is not set in stone. Right now we are in the information-gathering and planning phases. I am looking for input of any gotchas experienced while performing either upgrade, but especially the Exchange upgrade. Gotchas? What surprised you? What wasn't documented? What said one thing but was misleading? (Confusing either in content or severity.) What is great or horrible about the new system? What worked well? What worked poorly? If you were to do it over again...? (I know that this isn't so much a question that can be definitively answered, but I'm happy to reward insight and useful resources (not the Microsoft documentation, but Blogposts are welcome) with upvotes.) UPDATE A couple items of note: -We are not currently using OWA (currently only the admins), but it may become more of a consideration with iOS devices. -We do have a small number of Blackberries in the environment (< 10%). -In addition to the standard Exchange connectors, we have a third-party connector for Captaris RightFax integration.

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  • django : nginx : jquery css not being served

    - by PlanetUnknown
    I'm using apache+mod_wsgi for django. And all css/js/images are served through nginx. For some odd, reason when others/friends/colleagues try accessing the site, jquery/css is not getting loaded for them, hence the page looks jumbled up. My html files use code like this - <link rel="stylesheet" type="text/css" href="http://x.x.x.x:8000/css/custom.css"/> <script type="text/javascript" src="http://1x.x.x.x:8000/js/custom.js"></script> My nginx configuration in sites-available is like this - server { listen 8000; server_name localhost; access_log /var/log/nginx/aa8000.access.log; error_log /var/log/nginx/aa8000.error.log; location / { index index.html index.htm; } location /static/ { autoindex on; root /opt/aa/webroot/; } } There is a directory /opt/aa/webroot/static/ which have corresponding css & js directories. The odd thing is that the pages show fine when I access them. I have cleared my cache/etc, but the page loads fine for me, from various browsers. Also, I don't see any 404 any error in the nginx log files. Actually the logs for nginx are not getting refreshed at all. I restarted the nginx server using root, is that incorrect ? There is a user www-data defined in the nginx configuration file. Any pointers would be great.

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  • Home network with two isolated separate subnets, running on cablemodem/router and WRT-router.

    - by Johan Allgoth
    I have a new connection with a nice new router/cable-modem. I'd like to setup it up optimally and needs some pointers. I am a complete n00b when it comes to routing. I want to end up with two separate subnets, 10.1.2.0/24 and 192.168.1.0/24 each available on their own wireless channel/SSID. Both firewalled. I want my wired computers on the gigabit switch, optimally with public ips. I want to be able to reach 192.168.1.0/24 from 10.1.2.0/24, but not vice versa. Everyone should have internet access. Hardware and capabilities: Netgear CG3100. Handles cable connection. Gigabit switch. 802.11n. Can do DHCP, firewall, NAT etc. Can choose subnet. Can turn of NAT and if so hand out up to 4 public ips. Somewhat challenged when it comes to configuration. WRT-router. Runs DD/Open-WRT very stable. 100 Mbit switch. 802.11.g Can do DHCP, firewall, NAT etc. Can choose subnet. Highly configurable. I hope to be able to keep 10.1.2.0/24 on the CG3100, for speed reasons and 192.168.0.0/24 on the WRT-router for quota and user control reasons. On my 10.1.2.0/24 network I plan on running servers for various services. Should I turn of NAT on the WRT-router? Or on the cable modem? Activate what in that case? Is double NAT always f-ed up?

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  • How to Eliminate Black Bars from Powerpoint videos ?

    - by appu
    Hi, I am running a digital signage system for my client. The basic installation is a vertically oriented 42" LCD TV with a 1920x1080 screen resolution (reverse of 1920x1080 when setup normally, i.e. landscaped). Please check out the following link for a basic screen divisions layout I want to setup. http://flickr.com/photos/55097319@N03/5410208856 In the division labeled "ppt" I plan to run a powerpoint presentation. The screen division is 360x1476 resolution. As there isn't an option in powerpoint to specify slide size in terms of resolution so according to this article on indezine http://indezine.com/products/powerpoint/books/perfectmedicalpres02.html to get a screen resolution of my preference I divided 360 and 1476 each by 72 which gives me 5"x 20.5" as the slide size for my ppt. After setting up slide size as per above dimensions, I used sizer (http://brianapps.net) to resize my ppt window to 360x1476 so that when I record I do not get any black bars. But after launching recording there are side black bars visible which camtasia records and brings-inside cam studio with black bars. http://www.flickr.com/photos/55097319@N03/5409597049 My question is that after doing the above and as explained in the following video link why do I still get black bars. http://feedback.techsmith.com/techsmith/topics/eliminate_black_bars_in_your_powerpoint_recordings Is there an option in camtasia to stretch the recording to cover up black bars or any other alternative way I can get rid of those black bars while I get a ppt recorded as per my preferred dimensions. Notes: In the techsmith video above it asks to adjust my desktop screen resolution which my display chipset does not allow me to set. I set up show in powerpoint to be "browsed by an individual(window)". Also signage software only supports swf's and video file formats natively and not ppt, pptx etc. Thanks bhavani.

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  • How to change libcurl SSL backend from gnutls to openssl on Ubuntu server

    - by Jayesh
    I am getting gnutls specific errors in my Tornado webserver while processing Google OpenID SSL responses. One of the suggestions I got from Tornado mailing list is to try OpenSSL backend instead of gnutls. But it doesn't seem to be straightforward on Ubuntu server (11.10). On Ubuntu server, gnutls is provided by libcurl3-gnutls package and openssl curl support is provided by libcurl4-openssl-dev package. (I don't know why the later is named 4 and dev, but I couldn't find any other openssl+curl package in apt-cache search). I had libcurl3-gnutls installed by default, but not libcurl4-openssl-dev. So I installed the later and restarted Torando instances. But that didn't seem to work. I still got same gnutls errors. I found old discussions on curl mailing lists regarding the problems of supporting different SSL backends to libcurl, but didn't find exactly how is it done today. So far my guess is openssl is built into libcurl and gnutls is provided through separate package (that will explain why there is no libcurl3-openssl). But how do I make libcurl to pick up openssl backend and not gnutls? Is there some option in libcurl/pycurl API to do this? I tried uninstalling libcurl3-gnutls, but apt-get prompted that it will also remove python-pycurl along with it. So that won't do.

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  • RAID administration in Debian Lenny

    - by Siim K
    I've got an old box that I don't want to scrap yet because it's got a nice working 5-disk RAID assembly. I want to create 2 arrays: RAID 1 with 2 disks and RAID 5 with the other 3 disks. The RAID card is Intel SRCU31L. I can create the RAID 1 volume in the console that you access with Ctrl+C at startup. But it only allows for creation of one volume so I can't do anything with the 3 remaining disks. I installed Debian Lenny on the RAID 1 volume and it worked out nicely. What utilites could I now use to create/manage the RAID volumes in Debian Linux? I installed the raidutils package but get an error when trying to fetch a list: #raidutil -L controller or #raidutil -L physical # raidutil -L controller osdOpenEngine : 11/08/110-18:16:08 Fatal error, no active controller device files found. Engine connect failed: Open What could I try to get this thing working? Can you suggest any other tools? Command #lspci -vv gives me this about the controller: 00:06.1 I2O: Intel Corporation Integrated RAID (rev 02) (prog-if 01) Subsystem: Intel Corporation Device 0001 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Step ping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort - <MAbort- >SERR- <PERR- INTx- Latency: 64, Cache Line Size: 32 bytes Interrupt: pin A routed to IRQ 26 Region 0: Memory at f9800000 (32-bit, prefetchable) [size=8M] [virtual] Expansion ROM at 30020000 [disabled] [size=64K] Capabilities: <access denied> Kernel driver in use: PCI_I2O Kernel modules: i2o_core

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  • Can I tell if crashplan has backed up a particular file in a particular state?

    - by Chris Cogdon
    I would like to be able to tell, programmatically, if CrashPlan has backed-up a particular file, including the current updates to that file. I.e., that the current contents of a file are backed up. It's relatively easy to tell when CrashPlan last backed up a file: its file name appears in /usr/local/crashplan/log/backup_files.log.0, and with some accuracy, I could compare the backup time with the last modification time to the file, but that method appears to be somewhat dubious. A couple of methods I could think of, but I don't know how: Compare the current file to CrashPlan's metadata about that file. This needs knowledge about the format of CrashPlan's "cache" files as well as the hashing system used. This might be achievable through the CLI, but the CLI is just a portal into the GUI, and I need something that's scriptable. Restore the file to a temporary directory, and compare it. Unfortunately, there is no CLI to do restores; the GUI is the only way. I'll describe what I'm trying to achieve. It would be nice to know how to do the above, even if there are alternative methods for the following: I'm using CrashPlan for continuous backups to my PostgreSQL database, using WAL archives. In the current configuration, the archive command copies the files to an archive directory, which is backed up by CrashPlan. Every so often I manually confirm (or just trust) a group of WALs are backed up, and remove them from the archive directory, and occasionally do a restore through the GUI to ensure I can retrieve current and "deleted" WALs. The xlog directory is backed-up, too, so I have a good chance of doing a near-full restore even if a particular xlog hasn't been archived by PostgreSQL yet. I'd like to be able to automate this process, which necessitates either confirming the backup status and recency, or automating a restore for comparison purposes. (As a bonus, if the method is trustworthy, I could turn the "archive_command" from "copy to archive directory" into "confirm CrashPlan has backed up the current version", and do away with the archive directory completely). (And, yes, I'm doing regular pg_dumpall's, in addition to the above.)

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  • FTP FileWatcher

    - by Meiscooldude
    So, I am in this little predicament where I am stuck watching a few ftp folders to see if they have new files added to them. If they do, it needs to throw an event with the file name. Thereby telling something else to download that file. This is a pretty simple object to make, I was just curious if anyone knew how expensive this operation would be? I plan on using the command NLIST because I don't need file size information, and there will be no sub-directories in the folder. Each file in the folder will have exactly 25 characters in its name. There could be anywhere from 10 to 'maybe' a couple thousand (max around 2000) files per folder (usually on the lower end, 100-300, but currently growing). The files are anywhere from 250kb to a very VERY unlikely 10mb (usually within the 250kb to 4mb range). There possibly could be up to a few hundred folders (in which case I could change the watch frequency depending on number of folders), but currently there are only a few (6-10ish). There also would be multiple logins for the ftp server, different logins would have access to different folders. I am not asking for an implementation, just if anyone has some first or second hand knowledge about FTP, how could this affect my network. I am not opposed to putting in file retention times or change the frequency in which I check for new files.

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  • Iframe pages on Facebook does not show in Internet Explorer 9 - Windows 7 64-bit

    - by Morten
    Have this very irritating problem with Internet Explorer 9 and Facebook. If I go to Facebook and watch a page with iframes (like IFBML pages) it will not show up in Internet Explorer 9. It shows up in Firefox 4 and Chrome 10, but not in Internet Explorer 9. I run Windows 7 64-bit SP1 (danish). The strange thing is that I own three different PC´s and they all run Windows 64-bit SP1 and all of them has this issue. Can´t figure out what causes this issue. I have tried the following: Uninstalled AVG antivirus and installed Microsoft Antivirus - no change Updated Windows with SP1 - no change Updated from Internet Explorer 9 beta to Internet Explorer 9 final Ed. - no change Emptied cache and temp files in Internet Explorer 9 - no change Made www.facebook.com a trusted site in Internet Explorer 9 - no change And a lot of other things I can not remember I guess....but nothing seems to work. As I´m using quite a lot of my working time developing Facebook Fanpages it is frustrating not to be able to test them in Internet Explorer 9. BTW - it is Internet Explorer 9 32-bit - not 64-bit. Any clues?

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  • SSD causing 100% CPU usage in Apache/PHP

    - by Tim Reynolds
    I wanted to increase the performance on my development laptop so I added an Intel 320 Series SSD as my primary drive. Everything is amazingly fast, as expected, except Apache/PHP. I develop Magento by using an Ubuntu 10.10 virtual machine. Information: Host OS: Win 7 Professional 64bit Guest OS: Ubuntu 10.10 32bit Processor: i7 Chipset QM55 SSD: Intel 320 Series 160gb 30% full HDD: Hitachi 320gb 50% full (in side bay using an adapter) Laptop: Lenovo T510 Using: Shared folders Apache Version: 2.2.16 PHP Version: 5.3.3-1 APC Version: 3.1.3p1 APC Memory: 128M Using tmpfs for cache, log, session directories in Magento In the VM running on the SSD (VM files and source files are on the same drive) loading a product page in the Admin takes on average 26.2 seconds and uses 100% CPU for nearly the entire time. In the VM running on the old HDD loading the same page takes on average 4.4 seconds. It mostly uses around 40-50% of the CPU while rendering the page. I have read this post: Performance issues when using SSD for a developer notebook (WAMP/LAMP stack)? It says to change some settings in the bios. I have turned any and all power management features off in the bios. I can't for the life of me understand why this would be happening.

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  • Hiera datatypes wont load in Puppet

    - by Cole Shores
    I have spent a couple of days on this, followed the instructions on http://downloads.puppetlabs.com/docs/puppetmanual.pdf and even the Puppet Training Advanced Puppet manual. When I run a test against it, the results always come back as 'nil' and Im not sure why. I am running Puppet 3.6.1 Community Edition, with Hiera 1.2.1 on SLES 11. My puppet.conf file at /etc/puppet/puppet.conf consists of: [main] # The Puppet log directory. # The default value is '$vardir/log'. logdir = /var/log/puppet # Where Puppet PID files are kept. # The default value is '$vardir/run'. rundir = /var/run/puppet # Where SSL certificates are kept. # The default value is '$confdir/ssl'. ssldir = $vardir/ssl certificate_revocation = false [master] hiera_config=/etc/puppet/hiera.yaml reporturl = http://puppet2.vvmedia.com/reports/upload ssl_client_header = SSL_CLIENT_S_DN ssl_client_verify_header = SSL_CLIENT_VERIFY # certname = dev-puppetmaster2.vvmedia.com # ca_name = 'dev-puppetmaster2.vvmedia.com' # facts_terminus = rest # inventory_server = localhost # ca = false [agent] # The file in which puppetd stores a list of the classes # associated with the retrieved configuratiion. Can be loaded in # the separate ``puppet`` executable using the ``--loadclasses`` # option. # The default value is '$confdir/classes.txt'. classfile = $vardir/classes.txt # Where puppetd caches the local configuration. An # extension indicating the cache format is added automatically. # The default value is '$confdir/localconfig'. localconfig = $vardir/localconfig my /etc/puppet/hiera.yaml consists of: :backends: yaml :yaml: :datadir: /etc/puppet/hieradata :hierarchy: - common - database I have a directory created in /etc/puppet/hieradata and within it contains: /etc/puppet/hieradata/common.yaml :nameserver: ["dnsserverfoo1", "dnsserverfoo2"] :smtp_server: relay.internalfoo.com :syslog_server: syslogfoo.com :logstash_shipper: logstashfoo.com :syslog_backup_nfs: nfsfoo:/vol/logs :auth_method: ldap :manage_root: true and /etc/puppet/hieradata/database.yaml :enable_graphital: true :mysql_server_package: MySQL-server :mysql_client_package: MySQL-client :allowed_groups_login: extranet_users does anyone have any idea what could be causing Hiera to not load the requested values? I have tried even restarting the Master. Thanks in advance, Cole

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  • FreeRADIUS Default Answer

    - by jinanwow
    We are using FreeRADIUS with a MySQL database, authenticating users. We ran into an issue where are MySQL database was slow causing the max number of threads to be reached. The issue with this is, when the server couldn't answer the requests as there were no threads avaiable, it sent the response of Access-Reject to the clients. Our devices cache client connections and periodically checks with the server to see if they should still be allowed or to remove them. The equipment is designed that if there is no response from the server and a client is connected it will remain connected. The issue is, when the radius server is at its max threads, its default answer is to send access-reject (verified via packet capture), however we would like to change the default behavior to just ignore the request (keeping the clients connected). We have fixed the MySQL database issue for now, but I would like to change the default from Access-Reject, to just ignore the client altogeather. I have done research, but not able to find an answer to the question. Thanks in Advance.

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  • Virtual machines with failover setup

    - by kimmmo
    We have three servers and our plan is to run a number of virtual machines on them in such manner, that if one of the nodes blow up, we can either quickly or seamlessly get a spare running on another node. In addition to the normal networking, they're interconnected via dual 10Gbit NIC's, so networked raid/mirroring shouldn't be a problem. The guest VM's are mostly going to be running text mode linux, but of course it wouldn't hurt to be able to spin up a non-mission critical windows guest for running Visual Studio or checking IE compatibility of a web app. We've spent some time trying to get some magical cloud setup running using Stackops and Crowbar but it started to look like they were offering way too much and were too complicated for our needs. The next candidate, I think, is Ubuntu 11.04 server + KVM + Ganeti + Drbd, unless you can come up with a suggestion for a better solution that we have missed. Requirements: Installation should be simple or at least understandable without being in the dev team A browser interface for creating and managing VM's is a nice bonus Single node's hardware failure should cause minimal downtime for VM's that were running on that node Adding more nodes should be possible without shutting down the VM's.

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  • Ubuntu upgrade process failed

    - by Spin0us
    I tried to dist-upgrade my ubuntu server on my percona cluster but it failed with this message The following packages have unmet dependencies: libmysqlclient18 : Depends: libmariadbclient18 (= 5.5.33a+maria-1~precise) but it is not installable And here is the package listing # dpkg --list | grep -E 'percona|mysql' ii libdbd-mysql-perl 4.020-1build2 Perl5 database interface to the MySQL database iU libmysqlclient18 5.5.33a+maria-1~precise Virtual package to satisfy external depends ii mariadb-common 5.5.33a+maria-1~precise MariaDB database common files (e.g. /etc/mysql/conf.d/mariadb.cnf) ii percona-xtrabackup 2.1.5-680-1.precise Open source backup tool for InnoDB and XtraDB ii percona-xtradb-cluster-client-5.5 5.5.31-23.7.5-438.precise Percona Server database client binaries ii percona-xtradb-cluster-common-5.5 5.5.33-23.7.6-496.precise Percona Server database common files (e.g. /etc/mysql/my.cnf) ii percona-xtradb-cluster-galera-2.x 157.precise Galera components of Percona XtraDB Cluster ii percona-xtradb-cluster-server-5.5 5.5.31-23.7.5-438.precise Percona Server database server binaries ii php5-mysql 5.3.10-1ubuntu3.8 MySQL module for php5 During the install of the server, mariadb and galera cluster have first been installed. Then removed to be replaced by percona XtraDBCluster. So i think this is the source of the problem. But how can i resolve this without reinstalling all ? UPDATE 1 # apt-cache policy libmariadbclient18 libmariadbclient18: Installed: (none) Candidate: (none) Version table: 5.5.32+maria-1~precise 0 100 /var/lib/dpkg/status

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  • Sony PMB causing failure to load Windows 7 Pro 64-bit normally or even Safe Mode

    - by Wesley
    After installing Sony's Picture Motion Browser on my desktop with Windows 7 Pro x64, it always goes to Startup Repair due to Windows 7 failing to start. This always happens after I try to install it. I've installed with all unnecessary programs closed and all disk drives and unnecessary usb ports empty. I don't exactly know what is causing the problem. Any ideas? My desktop is an HP m8530f. http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01469325&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&product=3740333&lang=en Only upgrades are an HD4350 and a 500W PSU. EDIT: Windows 7 cannot start now. I'm currently running diagnostic tests from the BIOS. EDIT: Here are the problem details. Problem Signature: Problem Event Name: StartupRepairOffline Problem Signature 01: 6.1.7600.16385 Problem Signature 02: 6.1.7600.16385 Problem Signature 03: unknown Problem Signature 04: 21201022 Problem Signature 05: AutoFailover Problem Signature 06: 8 Problem Signature 07: CorruptFile OS Version: 6.1.7600.2.0.0.256.1 Local ID: 1033 CONCLUSION: So, I think Sony PMB may have caused some sort of corruption in the system files. So if you have Windows 7 and plan on installing Sony PMB, find a Vista or XP machine to install on.

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  • Scheduling Automatic Backups for Virtual Private Web Server running CENTOS 6.3 and WHM

    - by Oliver Farrell
    I'm pretty new to administering my own VPS - but thus far am finding it quite a compelling experience. There's something quite refreshing about having complete control over everything it does. One thing that I would like to look at is a suitable backup solution (a few times a day). My current setup is as follows: I'm running a CENTOS 6.3 VPS with a single 25GB hard drive solely for the purpose of hosting websites. I'm using WHM & cPanel for administering them. I now plan on adding an additional hard disk and hooking it up to my VPS. What I'm not sure about is how I get the two disks talking and get the backup process going. I'm not a seasons SSH-er so don't really know where to start. I'm hosting with Serverlove (one of the best hosting providers I've used) and am provided with a number of unique identifiers for each hard disk so I imagine these may play a part in linking them together. I appreciate that this is a little vague (I'm clutching at straws) but any assistance is very much appreciated.

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  • Weird PCI bug: lots of missed packets, or data comes in "bursts"

    - by Thomas O
    I have an ABIT KN9 motherboard. It has one PCI-e x16 slot, three PCI-e x4 slots and two legacy PCI. My problem is with the legacy PCI (which I shall just call "PCI".) I currently have an Nvidia GeForce 8600 GT (a low end card) installed in the x16 slot and a TV card in PCI #1; the x4 slots are unused, as is PCI #2. I plan to upgrade the graphics card soon, the current card was spare. I sometimes install a USB expander in PCI #2 but it causes a lot of problems - see below. The problem is under Linux (Ubuntu 10.10, Linux 2.6.35-22-generic), but probably under all operating systems (I have not yet been able to test Windows, but I suspect it will do the same as the problems occur on the BIOS/POST side too, e.g. when using a USB keyboard on the expander the keyboard will not work at all) PCI has an enourmous delay, and packets arrive in large chunks. For example, when using the USB expander, my USB mouse lags and jumps in large steps every second or so, while using the motherboard USB does not present this problem. My TV card will only do one or two frames per second, and the program (xawtv) usually times out and crashes. In dmesg, I'm getting messages like: bttv0: timeout: drop=74, irq=154/100476, risc=31f6256c, bits: VSYNC HSYNC OFLOW RISCI for my TV card, and similar timeout issues for my USB expander with a mouse. I received the motherboard, processor and RAM second hand and have only just got around to building it, so I don't know if this problem has always existed, or if it's a result of my set up. If anyone has any hints or solutions it would be appreciated - this is kind of a show-stopper for me.

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  • mysql INNODB inserts very slow

    - by 133794m3r
    The database's schema is as follows. CREATE TABLE `items` ( `id` mediumint( 8 ) unsigned NOT NULL AUTO_INCREMENT , `name` varchar( 45 ) NOT NULL , `main_type` tinyint( 4 ) NOT NULL , `rarity` tinyint( 4 ) NOT NULL , `stack_size` smallint( 6 ) NOT NULL , `sub_type` tinyint( 4 ) NOT NULL , `cost` mediumint( 8 ) unsigned NOT NULL , `ilvl` smallint( 6 ) unsigned NOT NULL DEFAULT '0', `flavor_text` varchar( 250 ) NOT NULL , `rlvl` tinyint( 3 ) unsigned NOT NULL , `final` tinyint( 4 ) NOT NULL DEFAULT '0', PRIMARY KEY ( `id` ) ) ENGINE = InnoDB DEFAULT CHARSET = ascii; Now, doing an insert on this table takes 0.22 seconds. I don't know why it's taking so long to do a single row insert. Reads are really really fast something like 0.005 seconds. With using the example configuration from here dev mysql innodb it averages ~0.002 to ~0.005 seconds. Why it takes more than 100x more time to do a single insert makes no sense to me. My computer is as follows. OS:Debian Sid x86-x64, Mysql 5.1, RAM:4GB ddr2, cpu 2.0Ghz dual core, HDD 7200RPM 32MB cache 640GB. Why it's taking almost 100x as much time for a SELECT * FROM items; vs INSERT INTO items ...; will never make any sense to me. It's still a small table at only 70 rows, and took that long even when it had 0 rows.

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  • OpenVPN IPV6 Tunnel Radvd

    - by Arenstar
    Hello.. I have an interesting question regarding ipv6 + openvpn.. My Version is OpenVPN 2.1.1 i have been given a native /64 ipv6 network ( for this example 2001:acb:132:acb::/64 ) The plan was/is, route this block through openvpn and into an office ( for testing purposes ) Soo to explain.. I have a Centos Box as the first linux "router" in a datacenter & a Ubuntu box as the second linux "router" in the office I have created a simple point-to-point tunnel using tun ( based off ipv4 address to start the tunnel ) I have assigned to Centos /sbin/ip addr add fed1::1/128 dev eth0 /sbin/ip addr add fed2::2/128 dev tun0 /sbin/ip route add 2001:acb:132:acb::/64 dev tun0 ## ipv6 Block down the tunnel /sbin/ip route add ::/0 dev eth0 ## Default out to Gateway I have assigned to Ubuntu /sbin/ip addr add fed1::3/128 dev tun0 /sbin/ip addr add fed1::4/128 dev eth0 /sbin/ip route add 2001:acb:132:acb::/64 dev eth0 ## ipv6 Block down to eth0 /sbin/ip route add ::/0 dev tun0 ## Default up the tunnel I have also included on both servers.. sysctl -w net.inet6.ip6.forwarding=1 Looks Good... right??? Wrong.. :( I am not able to ping fed1::1 from fed1::4 (Ubuntu) (can ping :4,:3,:2) However, i can ping fed1::1 fed1::2 from :3 ?????? ( very strange ) I am able to access the internet from any ipv6 interface on the Centos Box but clearly not from the Ubuntu box.. Further, i will eventually run radvd on the Ubuntu box eth0, and autoconf the network with ipv6 address's Anyone with some advice / tips to help me out.. ??? Cheers

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