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  • MySQL query cache is enabled but not being used

    - by Yoga
    I've checked the query cache is enabled mysql> SHOW VARIABLES LIKE 'have_query_cache'; +------------------+-------+ | Variable_name | Value | +------------------+-------+ | have_query_cache | YES | +------------------+-------+ 1 row in set (0.00 sec) But seems it is not being used mysql> SHOW STATUS LIKE 'Qcache%'; +-------------------------+----------+ | Variable_name | Value | +-------------------------+----------+ | Qcache_free_blocks | 1 | | Qcache_free_memory | 16759648 | | Qcache_hits | 0 | | Qcache_inserts | 0 | | Qcache_lowmem_prunes | 0 | | Qcache_not_cached | 21555882 | | Qcache_queries_in_cache | 0 | | Qcache_total_blocks | 1 | +-------------------------+----------+ 8 rows in set (0.00 sec) Any reason?

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  • [ubuntu] editting a grub

    - by Shishant
    Hello, I had installed reinstalled windows and ubuntu various times. Now Everything is set and I want to edit grub to set windows 7 as my default os when I run this command gksudo gedit /boot/grub/menu.lst I get an error that No such file or Directory found` then I tried this sudo grub find /boot/grub/stage1 I get an error No File found. Can anybody help me how can I change my default os? // Edited ls -a /boot/grub Thank You

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  • Temporary user-profiles on Windows Server 2008 TS

    - by sinni800
    Hello, for a publicly accessible terminal server I have created a user profile which only allows running of a few programs (demonstration of applications). This results in many people connecting to the same user name on the server, essentially sharing the same profile. How can I copy the original, empty profile on every logon to a seperate directory and delete it afterwards, so everybody starts with a clean copy of the "Guest"-Account?

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  • How to mount a drive in Ubuntu from terminal

    - by Mirage
    hi, I want to mount a drive from terminal at start up. At start if i use ls /media then its empty but if i go to computer and then click VM drive there and after that i use ls /media then it shows VM drive . How can i mount that drive at from terminal something like mount VM or how can find the path of VM like /dev/sda or something

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  • Setting Keyboard Shortcuts in Ubuntu

    - by joemangrove
    Is it possible to do the following in Ubuntu? If so can someone point me in the right direction. Say you want to set a keyboard shortcut to do the following: For examples sake, set Alt+F to open Firefox and maximize it, but only if Firefox is not already running. If it is running and not maximized, then maximize the most recently touched Firefox window. If it is maximized, then minimize Firefox. Thanks, Joe

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  • How to determine where debian package was sourced

    - by user169309
    How would I trace out which archive(s) in the sources.list a given installed deb package was or (could be) sourced from? I understand that the same package may be indexed by multiple archives. Does "aptitude" log any of this type of information when its installing packages? My aim is to pare down my current sources.list to the minimum set of archives needed to maintain the current set of installed packages.

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  • Opscenter repair service times out. ERROR: Requested range intersects a local range [...]

    - by jlemire-zs
    My production cluster had the repair service enabled since april 16th with the default 9 days time to completion and repairs would complete properly. However, since may 22nd, it is being disabled automatically by Opscenter: From /var/log/opscenter/opscenterd.log: [...] 2014-06-03 21:13:47-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4019838962446882275L, -4006140687792135587L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: More than 100 errors during repair service, shutting down repair service 2014-06-03 22:16:44-0400 [zs_prod] INFO: Stopping repair service [...] From /var/log/opscenter/repair_service/zs_prod.log: [...] 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Repair task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) timed out after 3600 seconds. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: Task (<Node 10.1.0.22='6417880425364517165'>, (-4006140687792135587L, -4006140687792135586L), set(['zs_logging', 'OpsCenter'])) has failed 1 times. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: 101 errors have ocurred out of 100 allowed. 2014-06-03 22:16:44-0400 [zs_prod] ERROR: More than 100 errors during repair service, shutting down repair service 2014-06-03 22:16:44-0400 [zs_prod] INFO: Stopping repair service On the nodes on which the repair fails, from /var/log/cassandra/system.log: ERROR [RMI TCP Connection(93502)-10.1.0.22] 2014-06-03 20:12:28,858 StorageService.java (line 2560) Repair session failed: java.lang.IllegalArgumentException: Requested range intersects a local range but is not fully contained in one; this would lead to i mprecise repair at org.apache.cassandra.service.ActiveRepairService.getNeighbors(ActiveRepairService.java:164) at org.apache.cassandra.repair.RepairSession.<init>(RepairSession.java:128) at org.apache.cassandra.repair.RepairSession.<init>(RepairSession.java:117) at org.apache.cassandra.service.ActiveRepairService.submitRepairSession(ActiveRepairService.java:97) at org.apache.cassandra.service.StorageService.forceKeyspaceRepair(StorageService.java:2620) at org.apache.cassandra.service.StorageService$5.runMayThrow(StorageService.java:2556) at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28) These errors, which only occurs if the repair service is running, are the only errors these nodes experience. Outside of the repair task, the Cassandra cluster works perfectly. I am running Opscenter 4.1.2 with a 6 nodes DSE 4.0.2 cluster installed on linux virtual machines. The nodes run a vanilla installation of Ubuntu Server 12.04 64-bit and DSE was installed and secured according to the provided installation documentation. I have been experiencing that problem on my development cluster for a while too (with DSE 4.0.0, 4.0.1 and 4.0.2), but I thought this was because of some configuration error on my part. The problem has appeared spontaneously at some point too. The Cassandra cluster has been working very smoothly with a good write throughput. It is very stable and has enough resources to work with. We did not notice any problems with the applications that depend on it.

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  • CMD: How do I delete all the contents of all directories (in the current directory) without deleting the directories themselves?

    - by merlin2011
    For example: I'm in the directory: F:\Data Inside this directory, I have four directories: F:\Datadir 22179 22915 23459 23460 These directories have various content, including directories and files. I'm trying to run something like: rmdir /s *\* where I delete all the contents of these numbered directories, while leaving the empty directories. Is there a one-liner that can do this, or do I have to loop through the sub-directories?

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  • Is there a Distributed SAN/Storage System out there?

    - by Joel Coel
    Like many other places, we ask our users not to save files to their local machines. Instead, we encourage that they be put on a file server so that others (with appropriate permissions) can use them and that the files are backed up properly. The result of this is that most users have large hard drives that are sitting mainly empty. It's 2010 now. Surely there is a system out there that lets you turn that empty space into a virtual SAN or document library? What I envision is a client program that is pushed out to users' PCs that coordinates with a central server. The server looks to users just like a normal file server, but instead of keeping entire file contents it merely keeps a record of where those files can be found among various user PCs. It then coordinates with the right clients to serve up file requests. The client software would be able to respond to such requests directly, as well as be smart enough to cache recent files locally. For redundancy the server could make sure files are copied to multiple PCs, perhaps allowing you to define groups in different locations so that an instance of the entire repository lives in each group to protect against a disaster in one building taking down everything else. Obviously you wouldn't point your database server here, but for simpler things I see several advantages: Files can often be transferred from a nearer machine. Disk space grows automatically as your company does. Should ultimately be cheaper, as you don't need to keep a separate set of disks I can see a few downsides as well: Occasional degradation of user pc performance, if the machine has to serve or accept a large file transfer during a busy period. Writes have to be propogated around the network several times (though I suspect this isn't really much of a problem, as reading happens in most places more than writing) Still need a way to send a complete copy of the data offsite occasionally, and this would make it very hard to do differentials Think of this like a cloud storage system that lives entirely within your corporate LAN and makes use of your existing user equipment. Our old main file server is due for retirement in about 2 years, and I'm looking into replacing it with a small SAN. I'm thinking something like this would be a better fit. As a school, we have a couple computer labs I can leave running that would be perfect for adding a little extra redundancy to the system. Unfortunately, the closest thing I can find is Dienst, and it's just a paper that dates back to 1994. Am I just using the wrong buzzwords in my searches, or does this really not exist? If not, is there a big downside that I'm missing?

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  • Self Ad serving for Linux server

    - by protecttheweb
    I am looking for ad serving software to serve my own ads. I am a newbie and just want your recommendation. Yes, I know about Google DFP but I want something non Google or something open source or for Linux servers. I want something kind of automatic like advertisers add the banner images or test ads and pay and ads are automatically served or can be set to draft until set to live. What recommendation do you have?

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  • Remote access to server via service control panel for non-admin user in Windows 2008

    - by user2278
    I'm trying to configure my Windows 2008 servers so that my developers can view their status without needing to log on to the box or be an admin. Unfortunately, the permissions set in Windows 2008 for remote non-admin users don't include the ability to enumerate or otherwise query services. This causes anything that contacts the SCM on the far end to fail (Win32_Service, sc.exe, services.msc etc). How do I set up permissions so that they can at least list the services and see if they are running?

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  • nginx to lighttpd detecting request headers

    - by A.Jesin
    I'm moving a site form Nginx to Lighttpd. I was able to move everything except these nginx rules set $enc_type ""; if ($http_accept_encoding ~ gzip) { set $enc_type .gzip; } if (-f $request_filename$enc_type) { rewrite (.*) $1$enc_type break; } I think I can create the variable like this var.enc_type = "" in lighttpd but how do I check if the request header Accept-Encoding contains gzip

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  • Resource consumption of FreeBSD's jails

    - by Juan Francisco Cantero Hurtado
    Just for curiosity. An example machine: an dedicated amd64 server with the last stable version of FreeBSD and UFS for the partitions. How much resources consume FreeBSD for each empty jail? I mean, I don't want know what is the resource consumption of a jailed server or whatever, just the overhead of each jail. I'm especially interested on CPU, memory and IO. For a few jails the overhead is negligible but imagine a server with 100 jails.

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  • Where the heck is mod_login? (Joomla)

    - by Joey Adams
    I'm a Joomla newbie, and I'm trying to set up a site to require login access to certain articles. Simply setting the article's Access Level to Restricted makes it disappear rather than prompting for a login. I can't figure out how to make a login page because I can't find any menu items or documentation pertaining to mod_login. I want to set at least one page to require login access. Where do I start?

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  • Suggested RAM for inspiron 1720

    - by sososo
    I have a inspiron 1720 with 2gb ram, what kind of ram should I buy, I want to get 4gb. i'm running windows 7 on it. Do I have to buy 4gb or should there be empty slots? Any links would be appreciated, I want to get an idea of the $ involved to see if its worth it. I am hoping it will make it substantially faster!

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  • Windows search is skipping folders

    - by natli
    I was trying to find where Electrum stored its wallet files, so I went to C:\ and entered wallet.dat in the search bar (top right), which is supposed to search through the entire C drive (right?), but it didn't find anything. Later, I manually found the wallet.dat file in C:\Users\Admin\AppData\Roaming\Electrum_SysFiles\1.1\C_\ElectrumPY. Searching for wallet.dat in C:\ still comes up empty. Why is this?

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  • Multiple user directories on EC2

    - by Joseph
    Im trying to set up multiple user directories on EC2 running Ubuntu, but im not sure how to set it up correctly so that i can serve files in the following format: http://<ec2 ip address>/user_1/public_html/file1.html and http://<ec2 ip address>/user_2/public_html/file3.html and so on for every user that i add. I tried looking for the httpd.conf file but i coulndt find it i only found apache2.conf Thank you guys.

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  • Why Photoshop CS5's photomerge's result immediately disappear?

    - by koiyu
    I have a bunch of JPG-files which I want to stitch together with Photoshop's Photomerge function. I choose File → Automate → Photomerge... and browse for the files. Photoshop opens the files and starts analyzing. I see the process bar filling and different phases are mentioned on the process bar. Nothing weird there. When the merging is done (and if I don't blink my eyes), I can see layers-palette is populated with the chosen files and, by quickly judging from the layer thumbnails, they're properly aligned. Sometimes the image window itself can be seen, but not always. Problem is that the layers and the image disappear in a flash. There is no error message. Everything is like prior starting the photomerge. No file has been changed. I could continue to use Photoshop normally. This is what I've tried so far: Loaded folder which has 38 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded the same files, but chose Use Files instead of Use Folder in the photomerge's window Loaded 19 JPG images, 4272 x 2848 and ˜ 5 megabytes per file Loaded 10 JPG images, ⇑ see above Loaded 5 JPG images, see above Loaded 3 JPG images, see above Scaled the images to 2256 x 1504 and ˜< 1 megabytes per file Loaded in a set of 38, 19, 10, 5, 3 Following steps are tested with these smaller files and with a set of 5 images Read Adobe's forums and reduced the amount of RAM Photoshop uses gradually from ˜ 80 % to 50 % (though I didn't understand the logic behind this) Would've reduced cache tile size to 128K, but it was set so already Disabled OpenGL Scaled the images to 800 x 533 and ˜ 100 kilobytes per file, loaded a set of 5 Read more unanswered threads around the internet In between each test I closed and reopened Photoshop. This is the first time I've even tried using photomerge. Am I doing something wrong? How can I locate what is the problem? How do I fix this? Photoshop is 64 bit Extended CS5 version. I'm on a mid-2010 quad-core (i5) iMac with up-to-date Mac OS X 10.6.6. Edit: Weird. First loading the images into one file via File → Scripts → Load Files into Stack… and then using Edit → Auto-Align Layers…, which, effectively, is the same as photomerge (even the dialog looks kind of the same), works! Even with the original JPGs without any issues. This doesn't fix photomerge, though.

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  • Sendmail yields "user unkown" errors even after (wrongly) setting up a catch-all account

    - by user59240
    I was trying to follow the instructions found here to set up a catch-all account, but still I get the following message for mails sent to non-existent users: The error that the other server returned was: 550 550 5.1.1 [email protected]... User unknown (state 14). Everything else works, though... /etc/mail/local-host-names and /etc/mail/virtusertable were set up as instructed. Any advice? Thanks!

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  • A way to extract layer sets from PSD files without Photoshop?

    - by chaddjohnson
    Are there any tools for (in order of preference) Mac, Linux, or Windows to extract images per layer set from a PSD file, without using Photoshop? I had a web designer send me a PSD file containing multiple pages, and each page is apparently in a layer set, and GIMP cannot handle these--it can't understand layer groupings. a command line tool, a rinky-dink Windows tool...anything will work, so long as it's free (preferable) or under $30, does not leave watermarks or anything of the sort, and works well.

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