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  • ESXi 4.0 Guests Locking up

    - by Brendan Sherwin
    I installed ESXi 4.0 on an HP Proliant g5 with a 64bit Xeon processor and took advantage of the free license as I work for a public school. I created two instances of server 2003 from scratch, one to be the DC, DHCP, the other to be a file server and DNS/DHCP backup. I had both guests up and running fine, setup my user accounts, transferred the data, etc etc. Once I joined a client machine to the domain, I would find that both of my Windows guests would lock up. Sometimes it would be for five or so minutes, once it was overnight. The "locked up" state means that as far I could tell, all services were stopped; dhcp no longer handed out IP's, DNS stopped working, I couldn't RDP into the server. The ESXi host, my HP server, was still running fine. VSphere was working, and I could look at the performance of the individual guests.I would try Powering off the hosts from inside VSPhere, and the hosts would start powering off, but get stuck at 95%, and stay that way, sometimes only for 10 minutes, others for hours. Several times I had to restart ESXi from it's console in order to restart my machines. Now, can anyone tell me what is happening, and how I can fix it, or take steps to prevent it? I hired a consultant to come take a look at it, someone who's experience and knowledge I trust, and he told me he had never seen anything like this ever before. He spoke to a friend of his who is VM certified, and he also said he had never heard of this issue. Thanks for your replies, and I'll do my best to respond ASAP. Currently, the server is powered off, and I've reinstituted my nine year old Server 2000 boxes, and I'm considering installing ESXi 3.5. Does anyone know a host created in 4.0 will work in 3.5? I'd really like to avoid having to rebuild those accounts! I know 4.0 works on this server, as I have another server in another school with the same exact hardware running 4.0 fine. Brendan

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  • MySQL table does not exist

    - by Phanindra
    I am getting following error in err file. 110803 6:51:26 InnoDB: Error: table `ims`.`temp_discoveryjobdetails` already exists in InnoDB internal InnoDB: data dictionary. Have you deleted the .frm file InnoDB: and not used DROP TABLE? Have you used DROP DATABASE InnoDB: for InnoDB tables in MySQL version <= 3.23.43? InnoDB: See the Restrictions section of the InnoDB manual. InnoDB: You can drop the orphaned table inside InnoDB by InnoDB: creating an InnoDB table with the same name in another InnoDB: database and copying the .frm file to the current database. InnoDB: Then MySQL thinks the table exists, and DROP TABLE will InnoDB: succeed. InnoDB: You can look for further help from InnoDB: http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html And when I do the same, like copying the frm file from other database to here and drop the table, i am getting following error, InnoDB: Error: trying to load index PRIMARY for table ims/temp_discoveryjobdetails InnoDB: but the index tree has been freed! 110803 6:50:26 InnoDB: Error: table `ims`.`temp_discoveryjobdetails` does not exist in the InnoDB internal InnoDB: data dictionary though MySQL is trying to drop it. InnoDB: Have you copied the .frm file of the table to the InnoDB: MySQL database directory from another database? InnoDB: You can look for further help from InnoDB: http://dev.mysql.com/doc/refman/5.1/en/innodb-troubleshooting.html Please any one help me out of this. Also can any one tell me why this error is coming. EDIT: The issue is occurring only when disk size is full and when we use Truncate table. Also this is occurring only in 5.1 version but not in 5.0 version.

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  • How to add an SSH user to my Ubuntu 12 server to upload PHP files

    - by user229209
    I have an Ubuntu 12 VPS and wanted to create a user account to upload and download my PHP code. So when logged in as root I created a user "chris" and then created a directory /var/www/chris I want "chris" to be able to upload and run files to the /var/www/chris directory. Permissions for the chris dir look like this: drwxrwxr-x 2 root chris 4096 Aug 20 03:35 chris As root I created a sample file called abc.php and put it in the chris dir. It worked fine when I test it in a browser. I logged in as chris and uploaded a file called 1234.php. That did not work. I just got a blank PHP page. The code was identical in both files. So it is not the code. The permissions now look like this: -rw-r--r-- 1 root chris 59 Aug 20 03:34 1234.php -rw-r--r-- 1 root root 49 Aug 20 03:21 abc.php How do I alow the "chris" user to upload files and get them to work?

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  • Does Windows actually verify digital signatures in the Properties dialog?

    - by Digital
    When downloading executables from the Internet, I always check to see if they are digitally signed before I feel safe running them. In Windows, when right-clicking a digitally-signed file and selecting Properties, a digital signature tab will be present in the Properties dialog. What I'd like to know is: does Windows actually verify the digital signature when it is shown in the Properties dialog, or does it merely indicate that the file contains a digital signature that may or may not be valid?

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  • Setup Domain Keys / DKIM on Exchange 2003

    - by Campo
    I need some suggestions for setting up DKIM on my exchange server 2003. We already use SPF but I feel a lot of email providers use this DKIM method. I would like to utilize both systems. This site was the best I could find with step by step instructions. If anyone could get more detailed that would be excellent. Let me know if you need more info.

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  • High Apache CPU usage, but low nginx - Configured correctly?

    - by Buckers
    We've just moved a website of ours over to a brand new high-spec Linux server (1x Intel Xeon E3-1230 v2 @ 3.30GHz, 8GB DDR3 ECC, 2x 128GB SATA SSD RAID1). The server has been configured to use nginx but we're not sure if its working correctly. The site always loads very fast to us (http://www.onedirection.net), but Plesk often sends us reports that the Apache CPU usage percentage reaches high leves, yet when we look at the nginx percentage it's always very low. We've come from a Windows background so are very new to Linux, but shouldn't nginx run INSTEAD of apache? Here's a screenshot from Plesk showing the CPU usage: http://www.pixelkicks.co.uk/_download/plesk.JPG The website gets around 20,000 visitors per day, and we use W3 Total Cache to get it running as fast as possible. MySQL has been optimised well. Memory usage is only running at 2GB of the 8GB. Does this look right? How can we tell that nginx is doing most of the work? Thanks, Chris.

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  • HT Link Sync Error after Ubuntu 10.04 LTS Installation

    - by marklab
    Update 1 I just assembled an exact replica of this server, and successfully installed Ubuntu 10.04 LTS in a RAID10 configuration. The success was confirmed by a login to the initial account. There must be a hardware component that is faulty. Since the error mentions HT, which I believe to be Hyper Threading, I will start with the CPUs. Please indicate if this error is more strongly associated with any other piece of hardware. Or make a recommendation of another approach that would be good for this issue. Issue I was attempting to install Ubuntu 10.04 LTS on this system with the board RAID10 configured. However, the installation failed at the partitioning stage by rebooting the system. Upon reboot, there is an error report after POST listing the following: Node0: NB WatchDog Timer Error Node1: HT Link Sync Error Node2: HT Link Sync Error ... Node7: HT Link Sync Error Press F1 to continue/resume. After pressing F1 the system will boot from the Ubuntu 10.04 LTS installation disc. However, it will fail at the same stage, and go through the same process from there. Hardware CPU: AMD OPTERON X12 6172 G34 2.1G 18MB Motherboard: Supermicro H8QG6-F HDD: WD Caviar Green 2TB 5.4K RPM Troubleshooting I disabled RAID10 on the system, and installed the Ubuntu on a single drive. It installed successfully. I then went back to a RAID10 setup and attempted to install on the system again, and was able to make it through the partitioning stage. However, upon reboot, the system reported: Error: file not found, and then booted me into the Grub Rescue console. I feel I have aggravated the problem at this point because when I attempted to install from the boot disc again, the system reboots upon hitting enter to even start the installation process. It does the same thing when trying to boot from an Ubuntu 11 disc. I have not been able to find any information on this HT Link Sync Error, which I feel may have started the problems I am experiencing now with the installation of the OS. I am also aware that Ubuntu is said not to be supported by the motherboard according to Supermicro's site. However, since I was able to install it successfully on a single drive, I do not believe it is incompatible. I would like to know a reason for why it's failing to install on/off.

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  • Google Chrome OS ISO

    - by Taylor
    First of all, a few questions as I'm a bit confused :P Is the Chrome OS that is shipped on Chromebooks "Chromium"? I'm wanting to buy a Chromebook, but I want to download an ISO or other similar format first so I can try it out in VMware. To be clear, I'm wanting the exact version that ships on Chromebooks, as I want to get a good feel for what I'll be buying Where can I find this? I've found other things but I'm not sure they're the actual Chrome OS

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  • Windows Scheduled Startup Task doesn't appear to be fully working but why?

    - by Devtron
    I originally tried to use Group Policy to enforce a startup script to run at startup. My startup script is a .CMD file, which calls 10 .exe files. Using Group Policy I could never get this to work....so I looked into using Scheduled Tasks. And here I am. I have tried two different versions of my script (for syntax purposes). I originally thought my syntax could be bad, so I tried a few approaches. Neither work. My #1 .CMD file approach commands look similar to this: start "this is my title" /D "C:\Somepathhere\myExecutable.exe" "..\..\published\wc_task.wfc" My #2 .CMD file approach commands look similar to this (it invokes a shortcut file): rundll32 shell32.dll,ShellExec_RunDLL "C:\Somepathhere\bin\Virtual Workflow.lnk" ^ Both of these scripts work fine if I manually run them, either by running the .CMD file, or even by manually forcing the Schedule Task MSC console to "Run" this script. Manual process seems to work fine, but automated it does not. My scheduled task is set for startup and uses "highest privileges" to execute as Admin. At the end of my .CMD script, I added a line to write to a text file, just to prove that the script was being run. That command looks like this: echo foo > C:\foo.txt When I reboot my server, and Schedule Tasks kicks in, I never get my ten .EXE files to run, but I do get the C:\foo.txt on my drive. What gives?

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  • DNS configuration issues. Clients inside network unable to resolve DNS server's name

    - by hydroparadise
    Setup the DNS service on Ubuntu 12.04 64 and all apears to be well except that my dhcp clients do not recognize my DNS servers hostname. When doing a nslookup on one of my Windows clients, I get C:\Users\chad>nslookup Default Server: UnKnown Address: 192.168.1.2 Where I would expect the FQDN in the spot where UnKnown is seen. The DNS server know's itself pretty well, but I think only because I have an entry in the /etc/hosts file to resolve. There's so many places to look I don't even know where to begin. Are there any logs I can look at? Something. Places I've looked at and configured: /etc/bind/zones/domain.com.db /etc/bind/zones/rev.1.168.192.in-addr.arpa /etc/bind/named.conf.local EDIT: '/etc/bind/zones/rev.1.168.192.in-addr.arpa' @ IN SOA dns-serv1.mydomain.com [email protected]. ( 2006081401; 28800; 604800; 604800; 86400 ) IN NS dns-serv1.mydomain.com. 2 IN PTR dns-serv1 2 IN PTR mydomain.com EDIT 2: '/etc/bind/named.conf.local' zone "mydomain.com" { type master; file "/etc/bind/zones/mydomain.com.db"; }; zone "1.168.192.in-addr.arpa" { type master; file "/etc/bind/zones/rev.0.168.192.in-addr.arpa"; };

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  • List of freely available system administrator books

    - by Sharjeel Sayed
    On the lines of http://stackoverflow.com/questions/194812/list-of-freely-available-programming-books, I'm trying to create a wiki of system administrator books with open source licenses, like Creative Commons, GPL, etc. Feel free to pour in your recommendations. Linux Linux Network Administrator's Guide, 2nd Edition Bash Advanced Bash-Scripting Guide MySQL MySQL Documentation Apache Apache Dektop Reference Networking TCP/IP Tutorial and Technical Overview

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  • Volume control tools

    - by Stan
    Sometimes I feel watching some youtube in Chrome has very low volume even if I turn everything to 100%. Is there any tools can increase volume above the system's maximun? I know IndieVolume does, but that didn't support some of my applications. So try to look for some alternatives. thanks

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  • Xvnc4 started from xinetd only displays empty gray X screen

    - by Scott Thomason
    Hi. I'm attempting to setup an Ubuntu 10.10 box so that anyone can connect to port 5900 and be greeted by the gdm login manager. To do so, I added a vnc entry in /etc/services and I am starting Xvnc4 using this xinetd config file: service vnc { protocol = tcp socket_type = stream wait = no user = nobody server = /usr/bin/Xvnc server_args = -geometry 1000x700 -depth 24 -broadcast -inetd -once -securitytypes None } This kind of works...I can start multiple sessions all to port 5900, and I get an X screen. The problem is that I only get an empty, gray X screen with no applications started. I know when you run vncserver from the command line it will look to your ~/.vnc/ directory for your passwd and xstartup files, and I think what I want to do is put "gnome-session" into the xstart file. However, which xstartup file? The running user is "nobody" who obviously doesn't have a ~/.vnc/ directory. I tried a /root/.vnc/xstartup file and a ~scott/.vnc/xstartup file and it doesn't look like they were even read. I changed the xinetd vnc service so that it would "strace" Xvnc4. I looked thru all the "open" lines and didn't get a clue as to what file it was trying to read for xstart. Can anyone help? I just want a terminal server where the user is presented with a gdm login screen.

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  • What is Active Directory and how does it work?

    - by MDMarra
    This is a Canonical Question about Active Directory. What is Active Directory? What does it do and how does it work? I find myself explaining some of what I assume is common knowledge about it almost daily. This question will, hopefully, serve as a canonical question and answer for most basic Active Directory questions. If you feel that you can improve the answer to this question, please edit away.

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  • Splitting Servers into Two Groups

    - by Matt Hanson
    At our organization, we're looking at implementing some sort of informal internal policy for server maintenance. What we're looking at doing is completing maintenance on our entire server pool every two months; each month we'll do half of the servers. What I'm trying to figure out is some way to split the servers into the two groups. Our naming convention isn't much to be desired (but getting better) so by name or number doesn't really work. I can easily take a list of all the servers and split them in two, but with new servers are being added constantly, and old ones retired, that list would be a headache to maintain. I'd like to look at any given server and know if it should have its maintenance done this month or next. For example, it would be nice to look at the serial number. If it started with an even number, then it gets maintenance done on even months and vice-versa. This example won't work though as a little over half of the servers are virtual. Any ideas?

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  • Unix style command line history in windows

    - by dean20007
    This may be a duplicate so feel free to close and point me in the right direction but is there a way of getting Unix style command line recall in windows. E.g. Opening a new command window and using the up arrow key will recall the last x number of statements. I know this works in the command window per command window session but is there a way to persist across sessions?

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  • Using bind (named) as a public proxy server

    - by TrentDavis
    We have a Python DNS server that does a bunch of stuff to figure out values it should return for various DNS records. This works nicely, however as it is Python, the performance under high load won't be great. What I would like to do is have a "proxy" bind server sit in front of it to return results to the public internet. This will cache the results (typically 15 minutes, some records are a few seconds), so the load on the Python server will be greatly reduced as it will only see one look up per domain (only about 100 domains) every 15 minutes. The data in these domains changes a lot, so using a master won't work as it will constantly be changing. I have something setup that looked like it would work great (using a forwarder for the zone), and tested it with dig etc, all going great. However when we went to go live with it, things weren't working, and we figured out that named is not setting the "Authoritative" bit (fair enough, it is a forwarder). So my question is, can we tell bind to set the Authoritative bit for forwarded domains? I have looked at all the doco I can find, and can't find anything about doing things this way. Most of the doco about using it as a proxy if for a LAN to the internet. Ideally I would like to use bind as it is there and installed (CentOS 5 servers). But at a pinch we could look at a different name server to do the work if it just can't be done with bind. Thanks.

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  • DNS queries to compromise DNS cache [on hold]

    - by Chris
    The transaction ID for DNS queries can take values from 1 to 65,536 and my computer pseudorandomly chooses one for each DNS request. If I sents 1,024 false replies per request, how many requests should I trigger to compromise the DNS cache with probability 99%? or as close tot hat as I can get. Thanks I'm getting a result of .6 requests which doesn't seem right to me. Feel as though it should be around 30

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  • is there anyway to know if your supposedly fully dedicated server is really a virtually resource-sha

    - by siran
    Hi, sometimes I feel my server not responding as smoothly as I would expect (i have a Intel(R) Xeon(TM) CPU 2.80GHz Quad Core), given that for example, the 'top' commands reports a low load < 0.5, CPU are almost completely idle ... I maybe have internet connectivity issues, so I don't really know if it's me or if it's the server itself. Is there anykind of benchmarking script (or something analogous) I could run and see the actual performance of the server ?

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  • Mac OS X: which folders should ClamXav Sentry watch?

    - by trolle3000
    I'm using ClamXav on my Mac. I've read this, and I am aware of the whole Macs-need-no-AV-but-they-do-anyway discussion. I guess that's why I would feel like a real jerk if I somehow managed to compromise my system! So ClamXav has been downloaded and ClamXav Sentry set up to start on log-in, but it doesn't really do anything before you tell it to. Specifically, you have to tell it which folders to watch for virusses/vira so I'm wondering, where are good places to look? Currently it's been set up to look the following places: In the home folder: ~/Downloads ~/Library/Caches ~/Library/Contextual Menu Items ~/Library/Cookies ~/Library/Internet Plug-Ins ~/Library/LaunchAgents In my system folder: /Library/Application Support /Library/Caches /Library/Contextual Menu Items /Library/Cookies /Library/Internet Plug-Ins /Library/LaunchAgents /Library/LaunchDaemons /Library/Startupitems Basically, this is 100% conjecture. All (most of) the folders have something to do with the Internet and things that start up automatically, so I'm guessing that's where vira go. But still, the qustion: Which folders should ClamXav Sentry watch, if any? FYI, I'm not using any mail applications, but please include that in your answer for anyone who might be interested.

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  • SVN Backup using rsync command

    - by user37143
    Hi, I setup a cron for taking backup of my SVN repo( 8 GB) to another server. But some times I get errors and I feel that this is not the proper way to back an svn to a remote server. I used the command rsync -avz myrepo. Please suggest me a good way to do svn backup to a remote server. I cannot zip the files and transfer it daily since it's 7 GB. Thanks

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  • Service Unavailable - App Pool disabled error...anyone know why?

    - by andy
    Hi guys A small number of our sites intermediately experience an error that is a mystery to us. Our set up is: Windows Server 2003 IIS6 .NET 3.5 We have about 35 Websites running on IIS Each site has it's own App Pool Each App Pool has the identity: Network Service The symptom is: The Application Pool for a site stops, and when you browse to the site, you only see: SERVICE UNAVAILABLE In the Event Logs, we have one Error, that looks like this: Application pool 'AppPool1' is being automatically disabled due to a series of failures in the process(es) serving that application pool. And we have several Warnings leading up to the error, that look like this (note: the warnings look the same, except for the process id): A process serving application pool 'AppPool1' suffered a fatal communication error with the World Wide Web Publishing Service. The process id was '292'. The data field contains the error number. What's causing this? As I said, it doeasn't happen very often....the last time was about 6 months ago...and it usually happens with the same site/App pool. Any ideas? cheers!

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  • Upgrading memory on an IBM Power 710 Express (8231-E2B)

    - by cairnz
    We have a Power 710 Express server that was loaded with 4x4 GB memory on a single riser card. I have replaced the 4 chips with 4x8GB and put in another riser card and loaded it with 4x8GB more for a total of 64GB memory. The firmware is AL730_078. When i power it on, the service processor boots up and i can access the ASMi. From here I can look at "Memory Serial Presence Data" and see that the system in some way detects 8x8 GB. However when i look at Hardware Deconfiguration and specifically Memory Deconfiguration, it is still listed with old values, 16384MB, and claims there are 4x4 chips in the C17 riser. How do i proceed to make the server recognize properly the amount of memory installed? I get a FSPSP04 and B181B50F progress code on booting because (i think) it hasn't been told the memory has changed. It then does not proceed to booting the operating system (VIOS) when turned on. Are there any steps I have overlooked here? Can I do some commands, either on the service processor, or otherwise, to tell the system to configure with the proper amount of memory? PS: This is a stand alone server, not configured with HMC or SDMC.

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