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• Non-restored Files Corrupted on System Restore

  - by Yar

  I restored OSX 10.6.2 today (was 10.6.3 and not booting) by copying the system over from a backup. The data directories were not touched. In the data directories, I'm seeing some files as 0 bytes, and getting permission-denied errors when copying, even when using sudo cp or the Finder itself. Some programs, differently, take the files at face value and see no permission problems (such as zip), but they see the files as zero bytes, which would be game-over for recovery. cp: .git/objects/fe/86b676974a44aa7f128a55bf27670f4a1073ca: could not copy extended attributes to /eraseme/blah/.git/objects/fe/86b676974a44aa7f128a55bf27670f4a1073ca: Operation not permitted I have tried sudo chown, sudo chmod -R 777 and sudo chflags -R nouchg which do not change the end result. Strangely, this is only affecting my .git directories (perhaps because they start with a period, but renaming them -- which works -- does not change anything). What else can I do to take ownership of these files? Edit: This question comes from StackOverflow because I originally thought it was a GIT problem. It's definitely not (just) GIT. Anyway, this is to help put some of the comments in context.

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• package manager cannot create users? installation script fails?

  - by RapidWebs

  It seems that when trying to install any package which requires the creation of a system User and Group, the installer fails with the error: install: invalid user 'username' When it happened the first time, I assumed it was related to the package, or it's installation script. But now I am attempting a different package, and alas, the same issue arises! note: /etc/passwd and /etc/group is not chattr -i Here is the example output from an attempted installation (of varnish): Selecting previously unselected package varnish. Unpacking varnish (from .../varnish_3.0.2-1ubuntu0.1_amd64.deb) ... Processing triggers for man-db ... Setting up libvarnishapi1 (3.0.2-1ubuntu0.1) ... Setting up varnish (3.0.2-1ubuntu0.1) ... install: invalid user `varnish' dpkg: error processing varnish (--configure): subprocess installed post-installation script returned error exit status 1 Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: varnish note: running ubuntu 12.04 For now, I have resolved the issue by manually creating the users, and running apt-get install -f, but this does not resolve the actual issue. Any ideas?

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• Powerpoint not drawing in slide properly...

  - by commradepolski

  So got another issue to post about. I have a user here who uses powerpoint a lot, Office 07 with SP2. When he opens up the presentation, powerpoint opens fine without errors, but does not draw in the main slide properly. So to better explain that, the list on the left hand side, that shows the slides and what order they are in, loads up fine. You can see the slides and the content etc. When you click on a slide, to edit it, it does not draw in on the editing screen. Not really sure how to explain that. The screen where the work on the slide is done, is what is affected. This is a screen shot from my pc not the users. So instead of the screen saying "Click to add title" it would be improperly drawn such that if I were to drag an explorer window across it, it would leave a trail. I have tried reinstalling office, updating it, as well as giving the user a new windows image and nothing has helped. Any help or advice is appreciated.

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• "Synchronizing" files between local and remote server using Git

  - by ConcreteVitamin

  My intended goal: I maintain some files in my local computer, and I also share them with others by putting them on my website. In the past I did this by manually uploading all the files using FTP, every time I did some modifications etc. Now, I am wondering if I can use Git to help me achieve this (by "pushing" the local files to my website server). My server is hosted by Dreamhost. First Attempt: First, I try this tutorial. I first push my local files to my Github repo, and ssh into my Dreamhost server to clone --bare from the Github repo. But I find that git does not transfer my files. So I ignore the tutorial. Second Attempt: I ssh into my Dreamhost server to clone directly from Github. My files are all transfered to the server. Then, on my local computer, I git remote add dreamhost ssh://[email protected]/~/my-project. Then I add some files, and commit, and git push dreamhost master. And a bunch of errors appears: http://geotakucovi.com/gitError.jpg As a newbie Git user, I must have missed something. Please help!

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• upload process times out for different time zones

  - by shilezi

  I have an inhouse(NY) app that cients can upload files to. Usually uploads go pretty quickly for most clients but this particularly cient in the UK always have problems with uploads. not sure if they get any errors but since we log all exceptions, we see this...Error: System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Net.WebException: The operation has timed out at System.Web.Services.Protocols.WebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.HttpWebClientProtocol.GetWebResponse(WebRequest request) at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) at ... This shouldn't even be an issue because since we noticed they have had this issue before so we bumped up these to maxRequestLength="2097151" executionTimeout="14400". Further investigating this error, i read that it could be a thread timeout since the default is 20minute. A worker process with process id of serving application pool was shutdown due to inactivity. Application Pool timeout configuration was set to 20 minutes. A new worker process will be started when needed. Problem is I am not entirely sure if that really is the case as all other cients mostly North American, have no issues but then their uploads don't seem to go beyond 80mb and the UK client have done a 700mb upload before that i know of. We have tested 750mb before and the whole process took about 15min for upload and processing. Any help on what the real issue here might be? Thanks.

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• IIS Web Farm Framework servers are automatically set to "unavailable" even when they are healthy... And they never return to the available state!

  - by JohannesH

  I have 2 web farm configurations, one with 2 member servers and one with 3 member servers. I have health monitoring set up on both farms and the monitoring tool reports all servers as being healthy. However after a while all the servers are marked as being "Unavailable" and "Healthy" in the "Monitoring and Management" screen (in the "Servers" screen they are all listed with "Yes" in the "Ready for Load Balancing" column). Viewing the event log on both the web farm controller or any of farm servers doesn't reveal anything interesting. there are no warnings or errors in the period where the servers became unavailable. There are a couple of informational events about the worker process getting shut down due to inactivity but I don't hope this is the cause since that would mean that the farms will die during the night when the load is low. Am I missing something? EDIT: Btw, I think its very odd that the application pool shuts down on the servers since the health monitoring system is polling an aspx page on each server. Shouldn't that keep them going? EDIT2: Now I've also experienced this problem with the RTW version of Web Farm Framework 2.

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• nginx root directory not forwarding correctly

  - by user66700

  The server files are store in /var/www/ Everything was working perfectly, then I've been getting the following errors 2011/01/28 17:20:05 [error] 15415#0: *1117703 "/var/www/https:/secure.domain.com/index.html" is not found (2: No such file or directory), client: 119.110.28.211, server: secure.domain.com, request: "HEAD /https://secure.domain.com/ HTTP/1.1", host: "secure.domain.com" Heres my config: server { server_name secure.domain.com; listen 443; listen [::]:443 default ipv6only=on; gzip on; gzip_comp_level 1; gzip_types text/plain text/html text/css application/x-javascript text/xml text/javascript; error_log logs/ssl.error.log; gzip_static on; gzip_http_version 1.1; gzip_proxied any; gzip_disable "msie6"; gzip_vary on; ssl on; ssl_ciphers RC4:ALL:-LOW:-EXPORT:!ADH:!MD5; keepalive_timeout 0; ssl_certificate /root/server.pem; ssl_certificate_key /root/ssl.key; location / { root /var/www; index index.html index.htm index.php; } }

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• How much Ram should I need on my VPS package? Am I being ripped off?

  - by Tamerax

  Hello! So, I'm currently on a VPSVille Cpanel3 account that has 768 MB guaranteed ram and 2048 MB burst ram (full details here: http://www.vpsville.ca/cpanel-vps). It's running CentOS, Cpanel, Apache and FastCGI. On the server itself I have a joomla community site with a forum system that generally has about 20 people on it max at any point and even then, during the evening, no one. It's a pretty small site but has a number of modules running on it. It gets about 6000 visits a month. Also on the server is a wordpress site that gets about 80-150 visits a day, 2 other wordpress sites that aren't developed yet so they don't get any traffic at all and 2 static html websites that also only get about 500 hits a month. All in all, no huge sites. The issue is that I get "out of memory" errors fairly frequently and it kills my server and I need to reboot it in order to get all my sites up and running again. It seems to me that I shouldn't have these issues with that much ram allotted to my account and everytime I send in a support ticket, they just tell me to upgrade the ram. Now, I'm still pretty new to all this so I'm not a good judge of how much I really need for my sites to run. I don't know if my sites really do need this much OR vpsville has oversold there servers, they don't actually have those resources available and I'm getting ripped off. So, how much ram should I be using with my current setup? Thanks!

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• How to diagnose a spontaneous reboot?

  - by Spectralist

  My computer reboots, seemingly completely at random, about once every week to two weeks but has occasionally gone months. It just goes from running fine to the POST with no error messages or anything and doesn't seem to be due to heat or usage as it's happened a couple of times when the computer has booted just a few moments ago and is idling. It's been happening for as long as I've had this computer, almost two years. It's happened in both Vista and Windows7. I strongly suspect it's a hardware problem. But due to the rareish and random nature of the crashes my normal strategy of just removing hardware until the problem stops isn't really practical. My guess would be Power Supply, Ram, or Motherboard. But I just don't know how to test an issue this random and want to figure out how to confirm which it is before I go replacing things. So is there some software or hardware that can be used to test these sorts of errors? I did run memtest86 for about 8 hours without finding any issues. And the power supply is more than capable of running my system.

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• TGT validation fails, but only for one user

  - by wzzrd

  I'm seeing the weirdest thing here. I have a couple of RHEL3, 4 and 5 machines that validate user credentials through Kerberos with an Active Directoy domain controller as their KDC. This works for all of my users, save one. There is one account that is unable to log into RHEL3 Linux machines and generates the following errors there: May 31 13:53:19 mybox sshd(pam_unix)[7186]: authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=10.0.0.1 user=user May 31 13:53:20 mybox sshd[7186]: pam_krb5: TGT verification failed for `user' May 31 13:53:20 mybox sshd[7186]: pam_krb5: authentication fails for `user' Other accounts, like my own, are fine: May 31 17:25:30 mybox sshd(pam_unix)[12913]: authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=10.0.0.1 user=myuser May 31 17:25:31 mybox sshd[12913]: pam_krb5: TGT for myuser successfully verified May 31 17:25:31 mybox sshd[12913]: pam_krb5: authentication succeeds for `myuser' May 31 17:25:31 mybox sshd(pam_unix)[12915]: session opened for user myuser by (uid=0) As you can see, TGT validation fails. This only happens for this specific account, not for any other. The failing useraccount's password has been reset, I inspected both user objects in Active Directory, but I see nothing out of the ordinary. If I have the failing useraccount log into a RHEL4 or 5 box, there is not problem, so it must be RHEL3 specific, but the fact that only one account suffers from this, alludes me. Maybe someone has seen this before?

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• USB Diskdrive cannot be formatted nor accessed

  - by Dmolish

  So I have just recently bought and 8GB USB stick(Kingston DT 100 G2) on which I had installed Linux. However I needed to reinstall said Linux so I formatted the stick to "default" settings which includes FAT32 filesystem. Later when the install process kept getting errors, I got advice that the problem might be with the FAT filesystem. I decided to try and format the stick to NTSF (format G:/fs:ntsf) but the formatting failed and the drive broke down. And with breaking down I mean you cannot access the drive anymore and when you plug it in Windows asks if I want to format the drive but despite my will the format always fails. To fix this I tried changing it back to FAT32 (format G:/fs:fat32), but i get "Error in IOCTL-call". Second thing I tried was trying to reset the filesystem with some 3rd party application like HP USB Disk Storage Format Tool. But the programs didn´t regocnize any media on the drive. So now I´m in the situation that I haven´t got any idea on what to do next. Is the drive recoverable or did I just create a piece of waste metal.

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• SQL Server: Network pauses after installing cheap SATA card: Is there a solution?

  - by samsmith

  At the risk of being assigned to the "bad DBA" club... I did something desperate, and may have to undo it. Problem: After installing a low cost eSATA board, my SQL Server is intermittently unresponsive (seemingly when there is a lot of IO to the eSATA drive). Questions: 1) Is there a solution to the intermittent unresponsiveness that allows me to keep the eSATA in place? 2) Whether or not (1==true): What is a decent, low cost way to add 1-3 TB storage to SQL for non-critical SQL DBs? Detail: Our SAN is full, and expanding it is costly and will take a month. I have a pressing need to add 1-3 TB for some development DBs (e.g. not mission critical; data loss is OK). As a bandaid, I threw a $20 eSATA PCI board in the Dell 1950 server, and attached an external 2TB eSATA drive. This seemed to work fine, but I notice that our production SQL DBs, and even remote desktop, now experience network "pauses" that they never did before (with both SQL client apps and remote desktop throwing "networking problem" errors). This SQL Server has lots of memory, and runs an instance of SQL 2005 (where all line of business apps reside) and an instance SQL 2008 (for development db's). SQL Server RAM has been appropriately configured, and this setup has run great for years. The server is: Dell 1950 Win2003 x64 14GB RAM PERC controller, 2 mirrored hd's internal Dell SAN over gbit ethernet, dual homed 2 PCIx slots (1 used by NIC for SAN, 1 now in use for eSATA board) Thank you for suggestions!

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• Burning Linux ISO to DVD and making it bootable.

  - by toc777

  Hi everyone, I just downloaded the Fedora 14 Live-Desktop ISO and used CDBurnerXP to burn the image to a DVD. For some reason the first time I burned the image nothing showed up on the DVD when I accessed it even though CDBurnerXP said it had successfully burned to the disk. I did it again and the ISO shows up on the disk (I don't think this is right, should it be the files inside the image that show up on disk or the image file??). The problem now is my dell PC can't find the ISO when I try to boot from it. I get an error saying it can't boot from the CD. I have verified the ISO image as directed from the Fedora website. My question is how do I make a bootable CD from a Fedora Live-Desktop ISO? How can I verify that the ISO was written to the CD correctly and has anyone had any issues booting from a CD using a Dell desktop (I'm not at home at the moment so I can't check what model it is but its old enough, I've had it for about 5 years). EDIT: All that needed to be done was to burn the image to CD as an image and not a data file. The first three times failed, I'm not sure if this was because of faulty DVD's or if the write speed was too high (16x). I put in a new DVD and changed the write speed to 8x, the image was then properly burned to the disk without any errors. Thanks.

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• Can you see something wrong in my working .htaccess?

  - by AlexV

  OK, after many search, trial and errors I've managed to create an .htaccess that do what I wanted (see explanations and questions after the code block): <IfModule mod_rewrite.c> RewriteEngine On #1 If the requested file is not url-mapper.php (to avoid .htaccess loop) RewriteCond %{REQUEST_FILENAME} (?<!url-mapper\.php)$ #2 If the requested URI does not end with an extension OR if the URI ends with .php* RewriteCond %{REQUEST_URI} !\.(.*) [OR] RewriteCond %{REQUEST_URI} \.php.*$ [NC] #3 If the requested URI is not in an excluded location RewriteCond %{REQUEST_URI} !^/seo-urls\/(excluded1|excluded2)(/.*)?$ #Then serve the URI via the mapper RewriteRule .* /seo-urls/url-mapper.php?uri=%{REQUEST_URI} [L,QSA] </IfModule> This is what the .htaccess should do: #1 is checking that the file requested is not url-mapper.php (to avoid infinite redirect loops). This file will always be at the root of the domain. #2 the .htaccess must only catch URLs that don't end with an extension (www.foo.com -- catch | www.foo.com/catch-me -- catch | www.foo.com/dont-catch.me -- don't catch) and URLs ending with .php* files (.php, .php4, .php5, .php123...). #3 some directories (and childs) can be excluded from the .htaccess (in this case /seo-urls/excluded1 and /seo-urls/excluded2). Finally the .htaccess feed the mapper with an hidden GET parameter named uri containing the requested uri. Even if I tested and everything works, I want to know if what I do is correct (and if it's the "best" way to do it). I've learned a lot with this "project" but I still consider myself a beginner at .htaccess and regular expressions so I want to triple check it there before putting it in production...

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• CentOS: AJAX/jQuery not working

  - by Australiya

  In a nutshell, I have an unmanaged VPS. At one time, it had Ubuntu 10.10 server on it, then I reinstalled it with CentOS 6 and updated it to CentOS 6.2. Now, the problem is, the AJAX/jQuery shoutbox has ceased working (I assume it uses one of the two to inject itself into a div and then refresh when new messages are posted, I'm not sure, I didn't write these), and the plug-board script now shows me a lime green blank page. No changes to the source codes have been made, and they are in the location they expect themselves to be. I have Apache2, MySQL 5, PHP 5, and I did install the php-xml libraries. What am I missing? It's gotta be server side because the scripts themselves are fine, if I move them to a different server they work just fine. I'm not getting any errors related to this in the error_log file. Thanks in advance! Edit: If you want, you can look at the plugboard at kazeshini.net/plugboard and there's an installation of the chatbox at silverlotus.kazeshini.net/yshout/example, I know nothing about scripts and debugging so better someone else looks at it than someone that doesn't know what they're looking for.

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• rsync via cron. How do I enable logging?

  - by tetranz

  Hi all I'm backing up a remote server to another computer using rsync. In cron.daily I have a file with this: rsync -avz -e ssh [email protected]:/ /mybackup/ It uses a public / private key pair to login. This seems to work well most of the time however, I've (foolishly) only ever really checked it by looking at the dates on some important files (MySQL dumps) that I know change every day. Obviously, an error could occur after that file. Sometimes it fails. When I run it manually, something like "client reset" sometimes happens. What is the best way to log it so that I can check with certainty if it completed or not? The cron log doesn't indicate any errors. I haven't tried it but the rsync man page on the oldish version of CentOS on the backup machine doesn't show the --log-file option. I guess I could redirect stdout with but I don't really want to know about every file. I just want to know if it all worked or not.. Thanks

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• How can I tell System Restore in WIndows 7 recovery console to use my recovered backup drive's restore point data?

  - by Rich Shealer

  My Windows 7 desktop PC failed to boot. It would get to a grayish screen with a mouse and would only respond to the power button. After much examination I found that the problem was not a failed drive as running CHKDSK from the Recovery Console on my main drives passed without any errors. I had been installing various Java version in the days before the failure so I decided to use a restore point to roll backwards. I have an external SATA drive controller with two 2 TB drives mirrored using the Windows mirroring function. My system has been backing up to this drive regularly. The problem is I accidently broke the mirror when testing to see if this drive system might have been causing my boot issue. Connecting it to another machine showed two dynamic drives that were invalid. In the end I reformatted one as an NTFS basic disc and used recovery software on the other to copy all of the files to the reformatted drive. I had to copy the restore points into the new drive's System Volume Information folder by granting rights to that user. I moved the drive back to the original machine and rebooted. I can see my new drive, it even uses the same drive letter as it did in normal mode. Running System Restore it lists a new Automatic Restore point created while sitting at the RC along with all of my backups. Selecting the backup I want (or any other) I get a dialog. The backup drive could not be found. System Restore is looking for restore points on your backup. Make sure the backup drive is on and connected to this computer and then click OK. What do I need to do to allow system restore to see the restore points?

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• The instruction at “0x7c910a19” referenced memory at “oxffffffff”. The memory could not be “read”

  - by ClareBear

  Hello guys/girls I have a small issue, I receive the following error before the .vbs terminates. I don't know why this error is thrown. Below is the process of the .vbs file: Call ImportTransactions() Call UpdateTransactions() Function ImportTransactions() Dim objConnection, objCommand, objRecordset, strOracle Dim strSQL, objRecordsetInsert Set objConnection = CreateObject("ADODB.Connection") objConnection.Open "DSN=*****;UID=*****;PWD==*****;" Set objCommand = CreateObject("ADODB.Command") Set objRecordset = CreateObject("ADODB.Recordset") strOracle = "SELECT query here from Oracle database" objCommand.CommandText = strOracle objCommand.CommandType = 1 objCommand.CommandTimeout = 0 Set objCommand.ActiveConnection = objConnection objRecordset.cursorType = 0 objRecordset.cursorlocation = 3 objRecordset.Open objCommand, , 1, 3 If objRecordset.EOF = False Then Do Until objRecordset.EOF = True strSQL = "INSERT query here into SQL database" strSQL = Query(strSQL) Call RunSQL(strSQL, objRecordsetInsert, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) objRecordset.MoveNext Loop End If objRecordset.Close() Set objRecordset = Nothing Set objRecordsetInsert = Nothing End Function Function UpdateTransactions() Dim strSQLUpdateVAT, strSQLUpdateCodes Dim objRecordsetVAT, objRecordsetUpdateCodes strSQLUpdateVAT = "UPDATE query here SET [value:costing output] = ([value:costing output] * -1)" Call RunSQL(strSQLUpdateVAT, objRecordsetVAT, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) strSQLUpdateCodes = "UPDATE query here SET [value:costing output] = ([value:costing output] * -1) different WHERE clause" Call RunSQL(strSQLUpdateCodes, objRecordsetUpdateCodes, False, conTimeOut, conServer, conDatabase, conUsername, conPassword) Set objRecordsetVAT = Nothing Set objRecordsetUpdateCodes = Nothing End Function It does both the import and update and seems to throw this error after. If I comment out the ImportTransactions it doesnt throw a error, however I have produced similar code for another vbs file and this does not throw any errors Thanks in advance for any help, Clare

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• Is it safe to format this partition?

  - by xanesis4

  On a ubuntu server I own, I am running out of space. When I ran sudo parted /dev/sda -l to find all available drives, I got this: Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 256MB 255MB primary ext2 boot 2 257MB 1000GB 1000GB extended 5 257MB 1000GB 1000GB logical lvm Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/server--vg-swap_1: 2135MB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 2135MB 2135MB linux-swap(v1) Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/server--vg-root: 998GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 998GB 998GB ext4 I understand /dev/mapper/server--vg-root is the filesystem, and /dev/sda1 has some stuff related to GRUB. But, what about /dev/sda2 and /dev/sda5? When I tried to mount /dev/sda2, it said that I needed to specify the file system, which according to the table, is nonexistent. So, is it safe to format this with, say ext4 and mount it? Also, when I tried to mount /dev/sd5, it gave me this error: mount: unknown filesystem type 'LVM2_member' I assume it is NOT save to reformat this. If I'm wrong, then that would be great, because I could save some space. Please let me know either way. Thanks in advance! UPDATE: Here is the result of mount: /dev/mapper/server--vg-root on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) /dev/sda1 on /boot type ext2 (rw,acl) /dev/sda1 on /media/hd2 type ext2 (rw)

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• Hp Pavilion dv6000 wont boot right and freezes

  - by MalwareManiac

  I have an hp pavilion dv6000 that was having windows issues recently including randomly freezing. I eventually concluded that the hard drive was bad (And I was correct as the bad drive started making funny noises and quit working soon after). So I replaced it with a known good drive and put windows on it and it worked for a few hours. After a few restarts startup didn't even make it to the login screen. It just stays at a lighted black screen until I restarted. After another restart it made it to windows but then froze after a few minutes. A few more restarts yielded one of these two results. Like I mentioned earlier I have a know good drive in it and I also replaced the memory that was in it with a know good stick along with running memtest with no errors. So What does that leave? a corrupted windows installation? Motherboard? CPU? Any ideas?

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• Nginx and 1000 WordPress Installs - Optimization

  - by GTE

  Hey, I'm trying to create a rather unusual (imo) configuration where I have: nginx php-fastcgi mysql 1000 seperate WordPress installs (with WP Super Cache). Each WP install corresponds to a seperate subdomain. Furthermore, I have 1000 cron jobs being called every hour that in turn call a WP plugin (using wget) which retrieves data from an API and posts it to the respective blog. This is all being run on a virtual server with 1024MB of RAM, 4 shared processors, etc. The server is not doing well, especially during the times that the cron jobs are being executed. Nginx constantly throws 504 errors and the site has a significant lag. 1) Am I crazy for having 1000 individual WP installs? Should I be using WP-MU and will this help significantly? (I have certain plugin restrictions that I prefer having seperate installs but could switch if need be.) 2) Instead of having 1000 unique cron jobs - should be calling say a bash script that will then process the 1000 HTTP requests I need? Could this be done in a succesive order instead of a sequential one? 3) Any other kind of suggestion you may have for optimization? Should I be proxying to Apache instead of just using nginx, etc. Any kind of advice would be appreciated. Thanks in advance

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• Running Ubuntu on Toshiba L630

  - by Toshibalin

  After suffering with the following error while trying to install Ubuntu onto my Toshiba L630 (kernel_thread_helper+0x0 0x10). I bypassed the error and managed to install the OS by going going into the "installation setup menu"( by pressing f6 while booting from my Ubuntu Installation CD) and assigning "acpi = off". I believe this fixes the problem because it stops the laptop doing checks that aren't compatible with the software. However, now that I have Ubuntu installed, I cannot run the bloody thing because I have no way of choosing "acpi=off" before booting Ubuntu. I guess this is a pretty broad question but I'm going to ask it anyways. Has anyone managed to find a version of linux that works on an L630 without any errors? If not, Is there a way to choose acpi=off before booting? Maybe by adding a line to the grub? Also, does anybody think I'm wasting my time? I read somewhere that toshiba laptops don't work well with linux. So if there isn't a fix for this I would appreciate being alerted about this. Cheers

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• Renaming VLAN Interfaces in Linux

  - by rhololkeolke

  I need to know how to rename VLAN interfaces. I'm currently running Ubuntu 11.04. I'm running a networking application that takes frames on one interface applies things like delays and errors and then forwards the frames out another interface. The default naming convention which names things <interface>.<vlan> e.g. eth0.2 will not work for my purposes because the program which parses the configuration script for the networking application doesn't like the decimal in the interface name. I ran vconfig set_name_type VLAN_PLUS_VID which solves the decimal in the interface name problem, however, I can then no longer assign the same vlan id to multiple interfaces because they have the same name. I know how to change physical interface names using udev rules, but because the vlan's will have the same MAC address and they aren't physical interfaces I can't use those rules to rename the interfaces. Is there a way to rename any interface in linux, including the virtual ones? Is there a way to specify your own naming convention for config set_name_type option without having to recompile the source of vconfig?

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• Windows Server 2008 (x64): Wont boot past bios page

  - by WebSolProv

  Happy New Year, Since a month or so ago I inherited responsibility for small network administration for my sins. The domain controller (yes there is only one, and yes I know it is best practice to have two even in a small domain setup) went down overnight and I have been trying all day to get it back up and running. Unfortunately this machine also administers our entire ActiveDirectory setup: 1) It goes thru the BIOS without any errors, nothing whatsoever 2) It gets into the “select safe mode, safe mode with networking, normal” etc and if you select either of the safe mode options it loads a few files then reboots. If you select normal it just runs for a bit (doesn’t get to the windows splash screen) and then reboots again. 3) If you select windows repair, it asks for an image to repair too: however it would appear that none was taken that can be used (!!) or one is not being shown. 4) I have tried repairing the boot sector and the boot configuration using Bootrec.exe, both which it says were completed successfully but still it doesn’t work. 5) I have tried swapping the drives into another server to rule out hardware and that didn’t work either so clearly it’s the OS. 6) I have tried running chkdsk which ran fine, and also memory check which was also fine. We do have another machine on the network that was installed as a DC so when we decommission the current infrastructure but when I try and "promote" this to the lead DC then I get “you cannot modify domain or trust information because a PDC emulator cannot be contacted" so I am unable to replicare the ActiveDirectory details. If anyone can think of any direction I should follow it would be greatly appreciated, Thanks, Alex

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• Diagnosing PC crashes (most often while using shared folders or torrents)

  - by Dyppl

  For the last few weeks my PC (pretty old P4 with WinXP SP3) has been crashing randomly. It just suddenly reboots instanteneously. It feels hardware-related but I wasn't able to determine wether it's software or hardware that causes it. I did notice a pattern though: it's more likely to crash when I copy a lot of files over network or have uTorrent running, but sometimes it crashes when I am not doing anything with it. Copying files from it over network causes it to crash in 1 to 10 minutes almost every time. Using torrents causes it to crash every 1-3 hours. With neither or that on it crashes every 24 hours or so. I ruled out the following probable causes: PSU (I bought a new one and turned off most of the drives so the power is sufficient 100%) Bad HDD or interface cable on my SATA disk from which I was originally copying the data over network (bought new SATA cable and later yanked out the HDD completely, PC still crashes without it) Video adapter (AGP slot is now empty, using the onboard VGA at the moment) Network adapter (removed it from PCI, using onboard LAN) CPU (I think: I changed the termopaste and it's temperature is below 50C) RAM (I think: I ran Memtest86 and it didn't show any errors) At the moment I only have only one system HDD and DVD drives, a mouse and a keyboard plugged in. The fact that it crashes most often when I use network extensively makes me think that maybe it's software related (I removed the network adapter from PCI and now am using an onboard one, so network hardware is unlikely to cause problems). I am now pondering system reinstall but it's not a pleasant solution so I decided to ask wether there are better ideas first. If someone can share a good diagnostic tool it would be great because I didn't find anything good. Thanks in advance, I hope that "help to diagnose" questions aren't entirely banned here. EDIT: Motherboard is actually ~4 years old as I replaced it back in 2007

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