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• Apache 2.4.3 php-fpm mod_fast_cgi and mod_cache

  - by Anjia

  Did anybody successfully configured mod_cache in apache 2.4 with php-fpm and fastcgi? my cgi config: <IfModule mod_fastcgi.c> Alias /php5.fastcgi /var/www/fastcgi/php5.fastcgi AddHandler php-script .php FastCGIExternalServer /var/www/fastcgi/php5.fastcgi -socket /mnt/tmp/fast/php-fpm.sock -idle-timeout 1600 -pass-header Authorization Action php-script /php5.fastcgi virtual My php-fpm config is standard and I am loading mod_cache and mod_disk_cache in Apache. However the Apache does not seems to cache any content. The debug log file: Fri Sep 07 23:22:59.691333 2012] [cache:debug] [pid 35623:tid 123613201929984] mod_cache.c(161): [client 10.0.0.22:21938] AH00750: Adding CACHE_SAVE filter for /index.html [Fri Sep 07 23:22:59.691345 2012] [cache:debug] [pid 35623:tid 123613201929984] mod_cache.c(171): [client 10.0.0.22:21938] AH00751: Adding CACHE_REMOVE_URL filter for /index.html [Fri Sep 07 23:23:01.326598 2012] [cache:debug] [pid 35623:tid 123613185144576] cache_storage.c(626): [client 10.0.0.110:5414] AH00698: cache: Key for entity /index.html?(null) is `http://10.0.1.16:8080/index.html?`

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• setting up a shared folder in linux

  - by Chris

  I'm trying to set up a folder in my home directory that will be shared with another user but for some reason it is not working this is what I've done, I have tried two different ways using ACL's and chown/chgrp etc I set up a group called say: sharedgroup and added both my user (john) and fred to it so when I run groups john john wheel sharedgroup groups fred sharedgroup fred mkdir /home/john/shared vim /home/john/shared/hello.txt (typed in some text saved it) chown -R :sharedgroup shared chmod -R o=-rwx shared ll drwxrwx--- 2 john sharedgroup 4096 Sep 9 21:14 shared ll shared -rw-rw-r-- 1 john sharedgroup 7 Sep 9 21:14 hello.txt (I also tried adding in the s permissions but that didn't help either) then when I log out of the server and log back in as fred and try these commands they fail vim /home/john/shared/hello.txt (won't allow me to write opens a blank file) cd /home/john/shared -bash: cd: /home/john/cis: Permission Denied ls /home/john/shared -ls: /home/john/shared: Permission Denied ls -lad /home/john/shared -ls: /home/john/shared: Permission Denied id fred uid=500(fred) gid=502(sharedgroup) groups=502(sharedgroup),500(fred) context=user_u:system_r:unconfined_t Any idea what I'm doing wrong??

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• Faster two way Boomark/History Sync for Firefox?

  - by geocoo

  I need a fast automatic two-way bookmark & history sync. Firefox sync seems too slow because I might bookmark/visit a URL then within a few mins put desktop to sleep and leave the house; if it hasn't synced, then I don't have a way of getting it on my laptop (or vice versa). My home upload is only around 200kbps so maybe that's why FF sync seems slow? (I mean it's minutes, not seconds slow). I have read there are a few ways like xmarks/delicious/google but I don't want clutter like extra toolbars or have to visit a site to get bookmarks, they should be as native in the Firefox bookmarks bar as possible, organised in the folders/tags. I know someone must have experimented/know more about this. Thanks.

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• How do you persuade users to abandon their personal folders?

  - by thing2k

  Towards the end of last year we started using Mimecast services, in particular their cloud base e-mail archiving. Since then we’ve been rolling out the Mimecast Services for Outlook (MSO) Add-in. We’ve informed the users that we will be give them training in the next few Months, and we do not require them to use it, but my boss stated that we are getting rid of Personal Folders (pst files), by putting them into Mimecast. Unsurprisingly this did cause something of a backlash. Though really who likes change. I know the IT reasons for getting rid of Personal Folders (inefficient, unreliable, single access, etc), but from an average user’s perspective, unless they have had one fail on them, they see them as simple and only way to archive e-mail when their 200Mb mailbox is full. So what can I say to the users, to get them to understand why Personal Folders are not the best solution?

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• Hybrid Shutdown in Windows 8

  - by Moab

  Referring to this article published September 8, 2011, it gives instructions on how to to do a full (non-hybrid) shutdown in Windows 8 from the command line. We have an option in the UI to revert back to the Windows 7 shutdown/cold boot behavior, or since that’s likely a fairly infrequent thing, you can use the new /full switch on shutdown.exe. From a cmd prompt, run: shutdown /s /full / t 0 to invoke an immediate full shutdown. shutdown /s /full /t 0 I tried this in W8 Enterprise RTM trial, but did not work, so I did a shutdown /? and noticed they have changed the command for a Full shutdown It appears the /s switch now does the full shutdown as explained in the MS article, and the /hybrid switch does the hybrid shutdown for fast startup. Can anyone confirm this change in other RTM versions of Windows 8? Any Microsoft docs on this change are welcome.

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• Can't set-up Wifi Adhoc on my Raspberry Pi with an USB dongle

  - by Wouter

  I am trying to set-up an access point (ad-hoc) for my Raspberry Pi. That means I'm trying to "share" the ethernet connection over Wi-Fi. I am doing this using my Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter. When following a tutorial (or actually every tutorial), it immediately goes wrong. root@pinkypi:/home/pi# iwconfig wlan0 mode ad-hoc Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Device or resource busy. I already tried ifdown and not having it in the USB port at the startup. If it helps, every action with the thing fail (or at least setting the mode). I am using Debian. I'm sure I'm overseeing something, but I can't find out what. What is wrong?

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• Should I use my ISP's DNS, or Google's 8.8.8.8?

  - by Torben Gundtofte-Bruun

  It seems like a good idea to use Google's public DNS 8.8.8.8 and 8.8.4.4 because it's really fast -- much faster than my own ISP's DNS! -- and probably more reliable, too. That seems like a ridiculously quick win for me, and much easier to remember. Assuming we're not all "tin foil hat" about Google, why shouldn't everybody use Google DNS? Note: I've seen this question, but I don't want a comparison to OpenDNS. This is about everyday use by everyday people in their homes. Update: I seem to have put my hand in a wasps' nest of privacy concerns. I appreciate the issue, but I was expecting a more technology-oriented discussion...

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• How to run Windows 7 Explorer shell with Administrator Privileges by default

  - by Barry Kelly

  The Windows 7 shell (Explorer) can be made to run with Administrator privileges by this manual process: Kill Explorer shell by holding down Shift+Ctrl, right-clicking the Shut down button in the Start Menu, and selecting Exit Explorer Start Task Manager with Ctrl+Shift+Esc Elevate Task Manager privileges by going to Processes tab and selecting Show processes from all users Then start up a new instance of the shell by File | Run in Task Manager, typing in explorer, and selecting the Create this task with administrative privileges. After following the above process, the Windows shell will be running with administrative privileges, and any programs it launches will also have administrative privileges. This makes performing tasks that require the privilege far easier, particularly for command-line applications, which usually fail silently or with an Access denied. message rather than giving an opportunity to use UAC to elevate the process's privileges. What I'm interested in, though, is creating an account which uses a privileged shell by default, rather than having to follow this laborious process every time. How can it be done?

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• Our wi-fi at work is ridiculously slow, will adding more range extenders improve it?

  - by john

  At work, we have two wireless networks (e.g., Work1 Work2); the Work2 is used downstairs and Work1 is used upstairs. However, both are notoriously slow. The connection is better when we are wired in, but unfortunately due to our building being very old and our company growing very fast, most employees are not seated near the walls where the ethernet cables are. I had Cox, our ISP, run a bandwidth utilization test and it doesn't seem like we are capping out on upstream/downstream, which leads me to believe that it's strictly an issue with the wireless networks (which were implemented before I got there). The wireless networks are both Apple Airport Extremes. Is there anything I can do to improve the situation for everyone? Speeds are extremely slow, and sometimes drops out.

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• Connecting to VPN via Proxy

  - by Rodrigo

  Hi, My company's VPN server is located in Netherlands, from my current location this is a really crappy place in terms of connectivity, connection keeps dropping, it's slow and keeps being reset during high traffic times. I have a dedicated server over USA which is able to connect to VPN server without this issues, connection is stable and fast. My question is, how do I connect to this VPN using a proxy running on my dedicated server? I'm on Windows 7 using a VM on XP to connect to the VPN. Thanks.

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• Incompatibilities between Indy 9 and Windows Server 2003?

  - by mcmar

  I'm having a problem with a Delphi application on some Windows 2003 servers. It uses a webservice call to connect with another server and transmit data back and forth. As soon as the app gets to the Authenticate method, the app dies. The app has worked for years on previous boxes with Win Server 2003, but it doesn't on freshly built machines. The machines are set up the same way for the most part, but there is clearly some config setting that differs that I'm not able to track down. Also, while the error becomes apparent in the call to Authenticate, packet sniffing proves that nothing ever happens between the app and the server it's trying to contact, which strengthens my thoughts that something is dieing early on in setting up the connection. I can't duplicate the error locally, so I can't step through the app in a debugger either. Any thoughts on why an Indy 9 Delphi web connection might silently fail?

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• Demote 2003 DC from within Directory Services Restore Mode

  - by adam

  We've had a child DC fail on us, and can't get into Windows on it as Directory Services is failing. A restore of the backed-up active directory hasn't worked due to a corruption, and so we've decided to demote the child DC and - for now - run AD from the PDC only. However, dcpromo /demote doesn't work from Safe Mode or Directory Services Restore Mode. We don't want to do a complete reinstall, as we have Exchange running on the child DC. Anyone know how (if?) we can demote the DC within safe mode or otherwise get into windows? Thanks

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• MySQL is killing the server IO.

  - by OneOfOne

  I manage a fairly large/busy vBulletin forums (~2-3k requests per second, running on gigenet cloud), the database is ~ 10 GB (~9 milion posts, ~60 queries per second), lately MySQL have been grinding the disk like there's no tomorrow according to iotop and slowing the site. The last idea I can think of is using replication, but I'm not sure how much that would help and worried about database sync. I'm out of ideas, any tips on how to improve the situation would be highly appreciated. Specs : Debian Lenny 64bit ~12Ghz (6 cores) CPU, 7520gb RAM, 160gb disk. Kernel : 2.6.32-4-amd64 mysqld Ver 5.1.54-0.dotdeb.0 for debian-linux-gnu on x86_64 ((Debian)) Other software: vBulletin 3.8.4 memcached 1.2.2 PHP 5.3.5-0.dotdeb.0 (fpm-fcgi) (built: Jan 7 2011 00:07:27) lighttpd/1.4.28 (ssl) - a light and fast webserver PHP and vBulletin are configured to use memcached. MySQL Settings : [mysqld] key_buffer = 128M max_allowed_packet = 16M thread_cache_size = 8 myisam-recover = BACKUP max_connections = 1024 query_cache_limit = 2M query_cache_size = 128M expire_logs_days = 10 max_binlog_size = 100M key_buffer_size = 128M join_buffer_size = 8M tmp_table_size = 16M max_heap_table_size = 16M table_cache = 96

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• Apache2 mod_proxy and post-multipart size

  - by Pietro

  Hi, I have Apache2 configured to proxy all traffic directed to a specific virtual host to a local tomcat instance. All is good and fine but for multipart posts larger than ~100kb. Such posts fail on the tomcat end with an exception like SocketTimeoutException. If I connect directly to Tomcat (which listens on a port != 80) then all posts are handled just fine. The Apache virtual host config goes like this: NameVirtualHost * SetOutputFilter DEFLATE <VirtualHost *> ServerName foo.bar.com ErrorLog c:/wamp/logs/foo_error.log CustomLog c:/wamp/logs/foo_access.log combined ProxyTimeout 60 ProxyPass / http://localhost:10080/foo/ ProxyPassReverse / http://localhost:10080/foo/ ProxyPassReverseCookieDomain localhost bar.com ProxyPassReverseCookiePath /foo / </VirtualHost> I tried browsing the Apache2 and mod_proxy docs but found nothing useful. Any idea why Apache2 refuses to proxy requests bigger than X bytes ? Thanks!

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• Is this normal? Multiple httpd process

  - by ilcreatore

  I'm testing a new Server. This isnt really a peak time for my server (2pm), but still its running a bit slow, I was checking the ESTABLISHED connections using the following command: # netstat -ntu | grep :80 | awk '{print $5}' | cut -d: -f1 | sort | uniq -c | sort -n http://i.stack.imgur.com/cZuvP.jpg My MaxClients are set to 50. So as you can see on the picture, only 10 people are eating most of my ram. I got a server with 4GB Ram (2.7GB free for apache) but each apache process is eating 53MB each, wich mean im only allowed to accept 50 process. The KeepAlive = Off, but I notice those connections arent closing fast enough, is that normal?

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• PXE boot very slow when PXE server is virtualbox

  - by sqrtsben

  As I read in questions here and on the Internet, PXE and Virtualbox don't seem to like each other too much. My problem is the following: I have a virtualized machine which hosts the DHCP and PXE server for 10 native clients. They are rebooted roughly every 10 mins and on each reboot, they need to boot a small linux (the initrd is ~4MB). Before, I had a native machine running and booting via PXE was very fast. Now, looking at the output of nload, I only get 500kbit/s whenever one machine is booting. The machines are connected via a GBit switch, so that can't be it. Also, when testing the connection speed to the outside, I have the full bandwidth available. Is VBox just unable to deal with large amounts of UDP packets? Can anyone point me in the right direction here?

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• Disable laptop screen

  - by Kyle

  I recently had the display fail on my Dell Inspiron E1505 laptop. I currently have my TV hooked up to the laptop's S-Video out which works fine as long as I'm running in Windows. For the first minute or so when the computer is booting I get no display. I was wondering if there was any way to disable the laptop screen entirely so that the TV display is active from the beginning (not just after Windows loads). I realize there may be a BIOS setting for this, my only problem is I can't see the BIOS settings screen since no display is active at that point so if anyone has any BIOS setting solutions I'd need the exact keystrokes to hit :)

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• Oracle Installation issue on Oracle Linux 6.4

  - by Pradhyoth

  I am trying to install Oracle 11g(11.2.0.1.0) on Oracle Linux 6.4(Remote Server). I get the following error(s) when Database Configuration Assistant is running ORA-01092: ORACLE instance terminated Disconnection forced ORA-48210: Relation Not Found Can someone help me regarding this errors, I cant seem to find what exactly that I have to do to solve this issue. I have done the same install on Oracle Linux 5.7 but never faced this issue before. The only problem while installing(which happens on 5.7 too) is that the required packages fail, but upon checking, it seems much higher versions are already installed. Also I cant do a yum update because the system seems to have connectivity issues with public-yum.oracle.com as I cant ping it(even though the IP Address gets resolved)

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• Slow performance by PHP directory operations on virtual machine (Ubuntu libvirt)

  - by thonixx

  Some days ago I installed an Ubuntu server and two running virtual machines with libvirt. Everything works fine except one performance problem. Everytime when I call a PHP script with directory operations the operations are very slow and not performant. Here is an example: http://zother.white-tiger.ch/ And here you see an example without a directory operation and how fast it is: http://michaeltanner.ch/ It's all on the same virtual server. The virtual machine uses 6 cores (8 are available) and 7500 megabytes RAM (8 Gigabyte are available). The disk image format is qcow2. How can I improve the performance?

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• Replicate / SYNC / Copy thousands of files

  - by rihatum

  Windows 32BIT Box (Server OS) 4GB RAM a 800GB LUN Mapped to the above box as a local drive Around 700GB of text files (Yes text files and a few thousand word documents) nested in thousands of directories. I need to move this to a new storage and map another server to it. What would be the best way to go about it ? What I did was mapped the existing LUN to our new box and mapped a LUN from the New storage to the new box too, and tried copying (windows copy) but that wasn't good / fast enough considering the downtime. I am now looking for either a script which will do this or a utility (prefer opensource / free) to move this size of data at a good speed. 2 x 1GB Nics teamed ether channel 2GBPs Any suggestions or pointers would be off great help Thanks !

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• LVM2 vs MDADM performance

  - by archer

  I've used MDADM + LVM2 on many boxes for quite a while. MDADM was serving for both RAID0 and RAID1 arrays, while LVM2 where used for logical volumes on top of MDADM. Recently I've found that LVM2 could be used w/o MDADM (thus minus one layer, as the result - less overhead) for both mirroring and stripping. However, some guys claims that READ PERFORMANCE on LVM2 for mirrored array is not that fast as for LVM2 (linear) on top of MDADM (RAID1) as LVM2 does not read from 2+ devices at a time, but use 2nd and higher devices in case of 1st device failure. MDADM reads from 2 devices at a time (even in mirrored mode). Who could confirm that?

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• Used HDD/ran DiskSmartView/40,000 Power-on-hours?? should i trust it w/ my data, or take it back and bitch?

  - by David Lindsay

  I just bought a used hard drive from a University Surplus Store. Decided to run DiskSmartView to make sure it wasn't ready to fail. 40,000 power-on-hours I don't know if I feel like trusting my data to something that used. I really dont know if thats unreasonably old, but when i compare it to the POH reading i get when testing my other hdds its more than 3x older (my others have 2110 hours, 6150 hours, etc.. It's a Western Digital, so that gives me a little bit of hope(WDC WD4000KD-00NAB0). I could sure use someone else's opinion here. Thanks, DAVE

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• Purpose of Adobe PDF Link Helper

  - by user770750

  I have an idea of what this browser add-on does. Adobe PDF Browser Control (AcroPDF.dll) Apparently, if I disable this one, PDFs embedded in a page with the embed or object tag fail to function properly. So, its pretty clear as to its function. However, I can't find anywhere accurate documentation on what this add-on below does. Adobe PDF Link Helper (AcroIEHelperShim.dll) IE9 (with Reader X) seems to work flawlessly with it disabled. PDF's still open within the browser. Only if I uncheck Display PDF in Browser in Readers preferences does that cease. I played around on an XP VM with IE7 and Reader X... no isssues noticed when disabled. Does anyone know the purpose of this add-on? At one time I believed it was necissary for the 'within browser' functionality to work, though that was never verified. Something change?

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• How to get diagnostic information on a failing Windows Server 2012 install

  - by Tobius Maximus

  I am trying to install a copy of Windows Server 2012 on two machines. Both machines go through the initial "Files loading" progress bar and get to the new Windows Server 2012 logo. However, the installation (on both machines) will immediately fail, and the machine will restart. I am trying to figure out if there's a way to display diagnostic information about the error before or after restarting, but Google is not helping me at all. Is there a key combination I can hit that will display an error log, perhaps?

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• MySQL 5.5 on Windows server is horribly slow

  - by Brad

  I have had no luck getting MySQL 5.5 to be as fast as 5.1 or MariaDB on the exact same hardware/database/environment under Windows server 2003R2 or 2008R2. My benchmarks from our application: MySQL 5.5 + CentOS 5.2 (XenServer Virtual) = 28 seconds (box is "busy" not buried) MariaDB (5.1) + Windows 2003 (Physical box) = 130 seconds (box is 2% busy) MySQL 5.1 + Windows 2003 (Physical box) = 170 seconds (box is 2% busy) MySQL 5.5 + Windows 2003 (Physical box) = 305 seconds (As high as 600 seconds...) (box is 2% busy) The only difference between these runs is the removal of skip-locking and the running of mysql_upgrade.exe to update some tables for stored procs on 5.5. Yes, I know it's a release candidate, I'm feeding that back to MySQL as well. No slow queries are logged, it doesn't think it's being slow, it just is. I'm going to start tearing into the queries themselves to see if the INSERT/SELECT plans have gone buggo on 5.5. Any help would be appreciated! Thanks

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