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• debugging connection to mysql from python script using MySQLdb

  - by timpone

  I am a python newbie and have a python 2.5 script that is using MySQLdb to connect on OS X 10.5.8. I haven't been able to succesfully connect to the database of interest with this. However, I am able to connect using php's mysqli and also via the mysql cli interface. I get the error: File "build/bdist.macosx-10.5-i386/egg/MySQLdb/connections.py", line 188, in __init__ _mysql_exceptions.OperationalError: (1045, "Access denied for user 'arc_development'@'localhost' (using password: YES)") On my linux box which has the same mysql perms, the script works fine logging in. On my OS X laptop, I am able to create a database named test_python which bypasses mysql authentication scheme. This makes me think that issues like 32bit / 64bit incompatabilities aren't occuring. If I turn on the query log, I get access denied: 100610 20:56:55 4 Connect Access denied for user 'arc_development'@'localhost' (using password: YES) I'm a little bit at a loss to what to do next. Is there any way I can specify in the general log or binary log to get the actual password set on the connection string? How about writing out from connections.py file the value (although not sure how I'd do that)? thanks

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• SSL connection hangs as client hello (curl, openssl client, apt-get, wget, everything)

  - by Niklas B

  Hi, I've run into a problem on my Debian VPS (a xen domU) regarding SSL. Namely almost all SSL connections hangs at client hello. For example: # curl -vI https://graph.facebook.com About to connect() to graph.facebook.com port 443 (#0) Trying 66.220.146.48... connected Connected to graph.facebook.com (66.220.146.48) port 443 (#0) successfully set certificate verify locations: CAfile: none CApath: /etc/ssl/certs SSLv3, TLS handshake, Client hello (1): It's the same when using the openssl client. However, some of the SSL traffic works (for example https://www.nordea.se). Server #uname -a Linux server.com 2.6.26-1-xen-amd64 #1 SMP Fri Mar 13 21:39:38 UTC 2009 x86_64 GNU/Linux It does however work on my Dom 0 (the main xen host). Apt-get I can't even run apt-get update with the debian security sources (hangs on reading headers) Open SSL At the begining I thought I had an old openssl client (0.9.8o-4) since I appeared to have a newer on the Dom 0 (0.9.8g-15+lenny8) but doing a manuanl update on the openssl deb didn't help. Open SSL Client This is the full output of when the openssl client hangs: http://pastebin.com/PAjwMap9 Closing thoughts I've Googled the crap out of this, and I'm not getting any further. I've seen problems with curl, apt-get etc. but they are all specific relating to the very application - not general for the system. Any thoughts?

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• Unable to connect to FTP - Connection timeout after MLSD

  - by Afrosimon

  So here is my problem, I'm absolutely unable to connect to a FTP server, in circumstances I've never seen before. Here is the situation : I get a "Connection timed out" just after the MLSD command. I usually use Filezilla, under Ubuntu, but to make sure the problem isn't related to this particular client I tried a few others : gftp on ubuntu and winscp and freeftp on windows 7. All the same result. Also made sure to try with Active or Passive modes. Same result. At this point I would be inclined to think there is something wrong with my current network (furthermore, according to a coworker the FTP server is OK). But I did check with http://ftptest.net/ and I am able to get the directory listing (which I'm not able to through a FTP client). So in the end the last thing I didn't tried is to go on another network, solution which seems would work, but wouldn't be very practical in the long run. And thus I guess there's something wrong with my router... but what could it possibly be? Note : I did try to register and post this question on filezilla's board first... but I can't create an account with a gmail nor hotmail account. WTF?

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• Nginx proxy to IIS Connection Timeout

  - by MitMaro

  I am having an issue with random timeouts with a Nginx proxy connecting to an IIS machine. I have been watching a packet capture between the two servers and it seems that the IIS machine is receiving a SYN packet but is not responding with what I think should be an ACK response. Before the timeout occurs there seems to be a slower response from the IIS server. There is no unusual memory or processor usage on the IIS or Nginx machine. Some information on the servers and setup: Nginx Machine: Ubuntu 10.04 64bit Nginx 0.7.65 Amazon EC2 Windows Machine: Windows Server 2008 IIS 7 ASP.net Application in Integrated Mode Nginx Error: 2011/01/10 17:57:40 [error] 8297#0: *30 connect() failed (110: Connection timed out) while connecting to upstream, client: 209.***.***.***, server: secure.example.com, request: "GET /a/path/deliver.aspx HTTP/1.1", upstream: "http://***.***.***.****:****//another/path/deliver.aspx", host: "secure.example.com" WireShark Packets 6521.449528 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477422103 TSER=0 WS=7 6524.443239 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477422403 TSER=0 WS=7 6530.443241 10.***.***.*** -> 174.***.***.*** TCP 38695 > us-cli [SYN] Seq=0 Win=5840 Len=0 MSS=1460 TSV=477423003 TSER=0 WS=7

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• Outlook locking network connection/session?

  - by HaydnWVN

  Scenario: We have an 'automatic orders' machine sat in the corner running XP with Outlook 2003. Its job is to check for new emails on a specific account, when it encounters one it checks the e-mail body for specific wording to determine which customer it is from (using a macro), then it checks the attachment for specific order codes before parsing the attachment to create a .csv file (which is then e-mailed onto one of the sales team) before importing the .csv into our bespoke ERP/Sales Order system to create an order. Problem: Periodically the machine will have symptoms of a lost network connection (unable to connect to any network source). Sometimes after several days, sometimes over a week. Volume of emails/orders processed does not seem to be linked. Additional info: The machines .pst is stored on a mapped network location. The .csv created is stored on a mapped network location. This is a workgroup, not a domain. All network drives are Samba shares from an Ubuntu fileserver. Our bespoke system runs from a database (MySQL) Ubuntu server. Our troubleshooting so far: I have switched machines (previous was Win2000) with the same symptoms. Restarting the machine FIXES the problem. Closing Outlook and then end tasking an Outlook.exe background process FIXES the problem. If you close Outlook, without end taking the background process, outlook will not reopen (saying it cannot find the pst file & it will not open any network location). Does Outlook have some kind of 'max session' linking it to network activity that is not closing after a mail request? Could Auto-archive be causing this? Is there a tool to check/display what each outlook.exe process is doing? Have not found many ways to troubleshoot this yet, as it is so infrequent...

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• problems installing mysql and phpmyadmin to localhost

  - by Joel

  Hi guys, I know there have been many similar questions, but as far as I can tell, most of the other people have gotten further than I have... I'm trying to get a WAMP setup happening. I've got PHP and Apache running and talking to each other. PHP is in c:\PHP Apache is in it's default program files folder. mySQL is in it's default install location. I have localhost setup at D:\public_html\ I'm able to navigate to localhost and see html and php files. But I have a simple mySQL test file: <?php // hostname or ip of server (for local testing, localhost should work) $dbServer='localhost'; // username and password to log onto db server $dbUser='root'; $dbPass=''; // name of database $dbName='test'; $link = mysql_connect("$dbServer", "$dbUser", "$dbPass") or die("Could not connect"); print "Connected successfully<br>"; mysql_select_db("$dbName") or die("Could not select database"); print "Database selected successfully<br>"; // close connection mysql_close($link); ?> When I try and open this, I get "could not connect" Now, I haven't even created a database yet, because I can't log into mySQL with phpmyadmin-so I think I've done something wrong in my mySQL install because they aren't talking to each other. I guess my main question is how do I first create a database in mySQL to be sure I have even installed it correctly?

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• Run a script on user connection on the VM host

  - by Scott Chamberlain

  I have a server running a Virtual Desktop Managed Pool, what I would like to do is when a user logs in I would like a script to check the number of available VMs and if below a threashold add additional VMs to the pool. The script to check the load and add to the pool is not the problem, I have that already figured out: $collectionName = "Test1"; $rdvh = "vmHost.example.com"; $minAvailableVMs = 2; Import-Module RemoteDesktop; $pool = Get-VirtualDesktopCollection -CollectionName $collectionName; $availableVMs = $pool.Size - ($pool.Size * $pool.PercentInUse / 100); $status = Get-VirtualDesktopCollectionJobStatus $collectionName #only add new servers if we are below the threashold and in the JOB_COMPLETEED state if($availableVMs -lt $minAvailableVMs -and $status.Status -eq [Microsoft.RemoteDesktopServices.Management.VirtualDesktopCollectionJobStatus]::JOB_COMPLETED) { Add-RDVirtualDesktopToCollection -CollectionName $collectionName -VirtualDesktopAllocation @{"$rdvh" = 1} } The problem I am having is, how do I run the above script on the Virtualization Host/Connection Broker/Some other server when a user connects?. I don't think it would be appropriate to run this as a logon script inside the VM, I think there is a way to do this on the management side but I don't know the new scripting interface in Server 2012 R2 well enough to know which commandlets I should look for to schedule this. EDIT: I know System Center is perfect for this but I do not have a license and was denied when I asked for it to be added to the budget.

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• What are problems and pitfalls with a public facing Active Directory

  - by Ralph Shillington

  The situation that i'm faced with is this: We plan on using a number of server applications hosted on Amazon EC2 machines, mainly Microsoft Team Foundation Server. These services rely heavily on Active Directory. Since our servers are in the Amazon cloud it should go without saying (but I will) that all our users are remote. It seems that we can't setup VPN on our EC2 instance -- so the users will have to join the domain, directly over the internet then they'll be able to authenticate and once authenticated, use that token for accessing resources such as TFS. on the DC instance, I can shut down all ports, except those needed for joining/authenicating to the domain. I can also filter the IP on that machine to just those address that we are expecting our users to be at (it's a small group) On the web based application servers, I imagine all we need to open is port 80 (or 8080 in the case of TFS) One of the problems that I'm faced with is what domain name to use for this Active directory. Should I go with "ourDomainName.com" or "OurDomainName.local" If I choose the latter, does that not mean that I'll have to get all our users to change their DNS address to point to our server, so it can resolve the domain name (I guess I could also distribute a host file) Perhaps there is another alternative that I'm completely missing.

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• Last (I think and hope) problems configuring SSL certificate with Apache and VirtualHosts

  - by user65567

  Finally I set apache2 to get a single certificate for all subdomains. [...] # Go ahead and accept connections for these vhosts # from non-SNI clients SSLStrictSNIVHostCheck off # Apache setup which will listen for and accept SSL connections on port 443. Listen 443 # Listen for virtual host requests on all IP addresses NameVirtualHost *:443 # Because this virtual host is defined first, it will # be used as the default if the hostname is not received # in the SSL handshake, e.g. if the browser doesn't support # SNI. <VirtualHost *:443> ServerName domain.localhost DocumentRoot "/Users/<my_user_name>/Sites/domain/public" <Directory "/Users/<my_user_name>/Sites/domain/public"> Order allow,deny Allow from all </Directory> # SSL Configuration SSLEngine on ... </VirtualHost> <VirtualHost *:443> ServerName subdomain1.domain.localhost DocumentRoot "/Users/<my_user_name>/Sites/subdomain1/public" <Directory "/Users/<my_user_name>/Sites/subdomain1/public"> Order allow,deny Allow from all </Directory> # SSL Configuration SSLEngine on ... </VirtualHost> <VirtualHost *:443> ServerName subdomain2.domain.localhost DocumentRoot "/Users/<my_user_name>/Sites/subdomain2/public" <Directory "/Users/<my_user_name>/Sites/subdomain2/public"> Order allow,deny Allow from all </Directory> # SSL Configuration SSLEngine on ... </VirtualHost> So, for example, I can correctly access https://subdomain1.domain.localhost https://subdomain2.domain.localhost ... Now, anyway, I have problems on accessing http://subdomain1.domain.localhost http://subdomain2.domain.localhost ... Since I use a Mac Os, on accessing the "http: version", I get a default page "Your website." (instead of a error). Why does it happen?

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• Disk usage on IIS, PHP5, performance problems.

  - by Jacob84

  Hi everybody, I'm quite worried with a performance problem that I'm facing in one of our production servers. I'm working for a hosting company, so you can imagine how heterogeneous the applications runnning here are. All started with a call of a client complaining about the speed loading a Joomla. The setup is IIS6 (Windows 2003) with PHP5 and FAST CGI wich normally works pretty well. I've tested the loading time and indeed, he was right. 7 or 8 seconds to load, when usually this can be accomplished in 2. Seeing this results, I started to check first CPU and RAM. Everithing normal, 2GB of RAM free, 3%-8% of CPU activity. That's what I call a relaxed server ;). Unfortunately, digging a little deeper I've found the 'PhysicalDisk' counters quite high (above 10), specially the read queues. I've used Process Explorer to see wich of those processes has the higher deltas, but everything seemed normal. As the problem is specially related to PHP pages, I've checked specific IIS counters, as Actual connections, Number of CGI requeriments and Number of ISAPI requeriments. CGI -> 3 to 7 ISAPI -> 5 to 9 Connections-> 90 to 120 (wich appears at the top of the graph) More than a solution (I know this is hard to find), I would like to know if you have an specifical methodology to face this kind of problems. Thanks a lot, as always.

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• Problems forwarding port 3306 on iptables with CentOS

  - by BoDiE2003

  Im trying to add a forward to the mysql server at 200.58.126.52 to allow the access from 200.58.125.39, and Im using the following rules (its my whole iptables of the VPS of my hosting). I can connect locally at the server that holds the mysql service as localhost, but not from outside. Can someone check if the following rules are fine? Thank you # Firewall configuration written by system-config-securitylevel # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] :RH-Firewall-1-INPUT - [0:0] -A INPUT -j RH-Firewall-1-INPUT -A FORWARD -j RH-Firewall-1-INPUT -A RH-Firewall-1-INPUT -i lo -j ACCEPT -A RH-Firewall-1-INPUT -p icmp --icmp-type any -j ACCEPT -A RH-Firewall-1-INPUT -p 50 -j ACCEPT -A RH-Firewall-1-INPUT -p 51 -j ACCEPT -A RH-Firewall-1-INPUT -p udp --dport 5353 -d 224.0.0.251 -j ACCEPT -A RH-Firewall-1-INPUT -p udp -m udp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -p tcp -m tcp --dport 631 -j ACCEPT -A RH-Firewall-1-INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited -A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp -s 200.58.125.39 --dport 3306 -j ACCEPT -A INPUT -p tcp -s 200.58.125.39 --sport 1024:65535 -d localhost --dport 3306 -m state --state NEW,ESTABLISHED -j ACCEPT -A OUTPUT -p tcp -s localhost --sport 3306 -d 200.58.125.39 --dport 1024:65535 -m state --state ESTABLISHED -j ACCEPT COMMIT And this is the output of the connection trial. [root@qwhosti /home/qwhosti/public_html/admin/config] # mysql -u user_db -p -h 200.58.126.52 Enter password: ERROR 2003 (HY000): Can't connect to MySQL server on '200.58.126.52' (113)

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• Slow connection to Linux MySQL from Windows only (XAMPP)

  - by Josh

  I'm having a problem with a PHP project (using Kohana 3.2 framework) on my Windows 7 64-bit machine connecting to the database. The development database is stored on a Ubuntu Linux server on the local network. Other development machines running OSX and Linux are connecting fine. There are no other Windows development machines to test with. I can access MySQL fine using MySQL Workbench, and other projects (which I believe to be less database heavy) run mostly ok, only occasionally getting timeout messages. I'm constantly getting Maximum execution time of 30 seconds exceeded when functions such as mysql_query() are run in this particular project. Specifically, the Kohana file where the timeout occurs is MODPATH\database\classes\kohana\database\mysql.php [ 186 ]. My local set-up is: Windows 7 Professional 64bit XAMPP 1.7.7 (PHP 5.3.8) The output of uname -a of the Linux server is: Linux peach 2.6.38-11-server #50-Ubuntu SMP Mon Sep 12 21:34:27 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux I've tried the following, with no success: Disabling Windows firewall Switching between using a persistant and normal connection In my.cnf, adding skip-name-resolve Increasing wait_timeout Enabling bind-address I've run out of ideas now, and have no idea how to debug an odd issue like this. Has anyone come across this before, or have any idea how I could find the root of the issue, or what might be the problem?

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• Troubleshooting my internet connection

  - by Simon Verbeke

  While I was out of the house, my father rearranged the network cables a bit. I don't know what he has done exactly - He says nothing more then pulling and untangling. When I came back home, my internet connection changed its IP from 192.168.0.205 to 169.254.197.233. The speed changed from 1Gbps to 10Mbps. It has also been at 100Mbps for a while. My subnetmask changed from 255.255.255.0 to 255.255.0.0. The standard gateway changed from 192.168.0.1 to no standard gateway. My DNS servers remain the same. I have checked the lights of the UTP ports, and it looks like it's only sending a heartbeat every few seconds. A sketch of the (relevant part of) the network: My PC ----- extender ----- modem ^ ^ ^ Wired | Wired | This thing connects two cables to each other All the cabling is gigabit, my network card is a Realtek RTL8168C(P)/8111(P) Family PCI-E Gigabit Ethernet NIC (NDIS 6.20). THe modem is a CBN SVG6540E I have no idea what is going on here and I don't know how to find out either. Any help is welcome! If you need any more info, please ask.

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• Why am I experiencing random connection timeouts? (CentOS)

  - by Ryan

  I have a CentOS server setup that currently hosts several websites (all relative of each other in some form or another). As of recently throughout the day at the most random times the website speed will lag to a crawl and eventually hit a connection timeout. When I say random times this typically happens anywhere between 10am and 1pm usually, however, this morning this happened to me at 8am. I do not have a lot of familiarity with server knowledge as far as what I am looking for in this situation. What are some possible causes of why my server is slowing the websites down to a complete crawl or timing out? Are there specific things I should be checking for when this happens? I have noticed using: tail /var/log/httpd/access_log That usually when this down time occurs there are lot of IP addresses related to BingBot, Googlebot, and sometimes various bots or spiders that I am unfamiliar with. Could this be related and if so how can I avoid this from causing my websites to lag out? Thanks in advance for any help or advice. The websites that are timing out are built with PHP and use a MySQL database to display information.

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• Symantec Antivirus Corporate -- two problems

  - by Alex C.

  We have a Windows network with a domain and about 50 clients. A few months ago, we installed Symantec Antivirus, Corporate Edition ver. 10.1.8.8000. There are two problems. The larger problem is that the software isn't very good at stopping viruses. In the last month, four different machines have become infected with those viruses that masquerade as antivirus software. Two machines I was able to clean with MalWareBytes. The other two were hopeless, and I had to reinstall Windows. Is there something I can do to make the Symantec product more effective? As far as I can tell, it successfully updates definitions nightly and pushes the definitions to the clients. The smaller problem is that the Symantec client applications sometimes initiate scans at random (and inappropriate) times. One of my co-workers complained to me yesterday that her computer was running very slow. I looked at the scan history and found that Symantec had scanned the computer three times during the past two days, and each time during the workday. No threats were found. Not sure why it's doing this, but I'd like it to stop. Any help would be appreciated. Thanks.

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• No network connection for vmware esxi guests

  - by JavaDev

  I'm new to VMware and setting up an Esxi server as a trial with the intention of possibly virtualizing some of our servers in the near future. I have setup ESXi on a Dell poweredge server, and installed a Centos 5.6 and Ubuntu 11.04 guest os on the server. However I cannot get networking on my guest OS's. The host is connected to a network with a DHCP server via a switch and is configured with a static IP. I have the default set-up for networking on the host: both guests are connected to the default vmnic1 adapter via the virtual switch vSwitch0. One thing though, the virtual adapter shows 'Observed IP ranges' to be XXX.XXX.XXX.194-XXX.XXX.XXX.195 (I've blanked out the initial prefixes) i.e just 1 address, even though the network the host is connected to has the usual 255.255.255.0 subnet mask. On the guest machines (using DHCP) by default, I can see an eth0 interface but with no connection or assigned IP address. A physical machine connected to the network gets a DHCP lease as expected. How do I get networking working on my guest OSes? Apologies for the long-winded question.

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• Without an internet connection my computer loads programs slowly. With an internet connection they load quickly

  - by Peter pete

  Gday. I've a laptop, with 8gb of RAM and a Samsung 830 SSD with about 2/5th of free space out of its 256gb. Win7 64b. Laptop is a Toshiba T130. In the other day I noticed that it took a long time to load a program, for example the python interpreter at the time the computer didn't have access to the home network. In both cases the computer boots quickly. About 40 seconds. Without internet opening the python interpreter, or notepad2.exe, or any program individually takes around 10 seconds. With internet connection (through WiFi) opening the same programs takes about 2 seconds. In both cases, it becomes SSD-instant-quick to open a program from a cold boot. I don't have any network mapped drives. I've tried with AV off (Avast antivirus) and same effect. I've installed all MS updates. I've googled and googled and have found nothing of help. I've run the Samsung SSD magician to "optimise" ssd and that didn't help. What could I do to determine & fix this issue?

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• Problems creating a functioning table

  - by Hoser

  This is a pretty simple SQL query I would assume, but I'm having problems getting it to work. if (object_id('#InfoTable')is not null) Begin Drop Table #InfoTable End create table #InfoTable (NameOfObject varchar(50), NameOfCounter varchar(50), SampledValue float(30), DayStamp datetime) insert into #InfoTable(NameOfObject, NameOfCounter, SampledValue, DayStamp) select vPerformanceRule.ObjectName AS NameOfObject, vPerformanceRule.CounterName AS NameOfCounter, Perf.vPerfRaw.SampleValue AS SampledValue, Perf.vPerfHourly.DateTime AS DayStamp from vPerformanceRule, vPerformanceRuleInstance, Perf.vPerfHourly, Perf.vPerfRaw where (ObjectName like 'Logical Disk' and CounterName like '% Free Space' AND SampleValue > 95 AND SampleValue < 100) order by DayStamp desc select NameOfObject, NameOfCounter, SampledValue, DayStamp from #InfoTable Drop Table #InfoTable I've tried various other forms of syntax, but no matter what I do, I get these error messages. Msg 207, Level 16, State 1, Line 10 Invalid column name 'NameOfObject'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'NameOfCounter'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'SampledValue'. Msg 207, Level 16, State 1, Line 10 Invalid column name 'DayStamp'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'NameOfObject'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'NameOfCounter'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'SampledValue'. Msg 207, Level 16, State 1, Line 22 Invalid column name 'DayStamp'. Line 10 is the first 'insert into' line, and line 22 is the second select line. Any ideas?

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• GRUB having problems with my sda1 UUID

  - by Igoru

  I was having trouble trying to setup triple boot on my computer... (Take a look at this thread if you think it would help). I ended up by having a GRUB menu that has Ubuntu entries and "Windows" entry, that calls an EasyBCD menu to choose between Windows 7 and XP. Everything would be fine if, only if, GRUB was set up correctly. I can't find why, but it throws me this when I try to open Ubuntu: I've already tried to remove the menu.lst and do a grub-update, and a grub-install too. I tried to create a symlink to /dev/sda1 at /dev/disk/by-uuid/<<uuid that is there>>, just like the other UUIDs that were there... But I couldn't find that symlink at that busybox that opened when it thrown me the error. Any ideas? [UPDATE] This is the GRUB entry with problems: title Ubuntu 9.04, kernel 2.6.28-15-generic uuid b1ed36e5-4d84-4eb8-86ef-6f1135ffc238 kernel /boot/vmlinuz-2.6.28-15-generic root=UUID=b1ed36e5-4d84-4eb8-86ef-6f1135ffc238 ro quiet splash initrd /boot/initrd.img-2.6.28-15-generic quiet And this my /dev/disk/by-uuid folder: 04DCBCFBDCBCE856 - ../../sdb1 (NTFS backup disk) 4434E77734E769FE - ../../sda4 (NTFS WinXP) ACB09F0DB09EDCE0 - ../../sda2 (NTFS Win7) b5311be8-a853-4fdd-aed5-d65974b3c0c4 - ../../sda5 (EXT4 home) C04B-4D97 - ../../sdc (FAT32 live-pendrive from which i'm running) D28447F68447DB9B - ../../sda6 (NTFS files partition) e0e88f38-d815-423a-9d5e-64b9c74a8b92 - ../../sda7 (swap)

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• Random “Lost connection to MySQL server at 'reading initial communication packet', system error: 0”

  - by user1606545

  Sometimes I get the error from MYSQL server: Lost connection to MySQL server at 'reading initial communication packet', system error: 0 I cannot find the cause, since most of the time it works, but every week for some hours I get this error. I googled, but there seem to be only users which have this error permanently. But in this case, it only occurs sometimes. I checked hosts.allow and hosts.deny, but the host is allowed and not denied. Also sometimes I get the error: File './database/table.MYD' not found (Errcode: 24) It occurs very rarely. But it occurs for some hours once a week, sometimes on multiple days, but suddenly the problem disappears again. I have checked the open files limit. It's 2048 and should be absolutely enough. I also tried to increase the number of open files nevertheless, but no effect. I thought, perhaps the process does not close some tables. But this is impossible, because after a while everythings o.k. again and the process opens maximum 100 tables at once. I also checked the MySQL-runtime-environment, and there were 930 opened files. I cannot explain that. After a while it's 129. I am running a MySQL-Server on a SUSE-Linux machine. I connect to the MySQL-Server from another host by the command line tool "mysql" and by MySQL-C-connector. The MySQL-Server is version 5.0.67.

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• VM load and ping problems after replacing server motherboard

  - by Andre

  Recently, we had to replace the motherboard of one of our servers. The procedure was done by IBM as it had guarantee. The server runs ESXi 5.1, with several virtual machines, including our main mail server (Domino) and a file server. After the replacing the motherboard and staring the VMs, ESXi asked us if we had moved it or copied (different motherboard is like a different computer). We clicked the latter. We started each machine and after some basic reconfiguration, all of them were up. However, we have been having problems with the mail server, it has been acting really slow at times (this could be when it syncs with the secondary mail server) and we have been checking with Centreon (a Nagios frontend) that its CPU load has been a bit high at times and ping response too. There was a moment this morning in which I tried connecting via SSH console and it was really slow to show login and basic commands like ifconfig and top. This particular mail server is a CentOS 4.4.7 64-bit. The little configuring we had to do after restarting it was to configure the network connection as it was resolving through DHCP. Our mail software is Lotus Notes server 9. Do you know of any way in which this replacement may be causing these difficulties, and how to fix it? Thanks.

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• Problems setting up VLC Sever/client streaming

  - by Ayos

  I'm trying to set up a Linux machine as the server and a Windows XP machine as the client. Both machines are connected to the same local network via a Wi-Fi router. I setup the stream with the following properties : http stream port 8080 play locally And not much else. No firewall on the windows client(Windows firewall is disabled) When I try to open network stream via the client machine(Using VLC or Windows Media Player) I get the following errors: Media Player error code : 0xC00D11B3: Encountered a network Problem. VLC Console: main warning: connection timed out access_mms error: cannot connect to 192.168.1.3:8080 main debug: no access module matching "http" could be loaded main debug: TIMER module_need() : 12625.810 ms - Total 12625.810 ms / 1 intvls (Avg 12625.809 ms) main error: open of `http://192.168.1.3:8080' failed main debug: dead input main debug: repeating item main debug: starting playback of the new playlist item main debug: resyncing on http://192.168.1.3:8080 main debug: http://192.168.1.3:8080 is at 0 main debug: creating new input thread main debug: Creating an input for 'http://192.168.1.3:8080' main debug: using timeshift granularity of 50 MiB, in path 'C:\DOCUME~1\Accer\LOCALS~1\Temp' main debug: `http://192.168.1.3:8080' gives access `http' demux `' path `192.168.1.3:8080' main debug: creating demux: access='http' demux='' location='192.168.1.3:8080' file='\\192.168.1.3:8080' main debug: looking for access_demux module: 0 candidates main debug: no access_demux module matched "http" main debug: TIMER module_need() : 0.461 ms - Total 0.461 ms / 1 intvls (Avg 0.461 ms) main debug: creating access 'http' location='192.168.1.3:8080', path='\\192.168.1.3:8080' main debug: looking for access module: 2 candidates access_http debug: http: server='192.168.1.3' port=8080 file='' main debug: net: connecting to 192.168.1.3 port 8080 qt4 debug: IM: Deleting the input main debug: TIMER input launching for 'http://192.168.1.3:8080' : 13397.979 ms - Total 13397.979 ms / 1 intvls (Avg 13397.978 ms) qt4 debug: IM: Setting an input Need Help. Thanks in advance.

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• DSL Connection drops

  - by user60024

  Ok, I just moved so I had to switch from Cable to DSL. I know very little about computers or internet connections and such, so I had AT&T come out to the new house to set up their highest speed. When they got here, they told me that I needed to downgrade to 3.5mbps because I was too far away. Well we did and everything was going great for two days until I started experiencing random disconnects which have been happening now for about 2 to 3 weeks. I am using a N300 Wireless Dual Band ADSL2+ Modem Router and my ethernet cable is hooked directly into my computer from it. I recently started to notice that it disconnects around 5:30 and 8:30, which may be because a lot of people are on their computers(?) and that it works perfectly fine, almost, all the time if I'm not playing a game. During this time, when I try to load up World of Warcraft the Internet light disappears and the DSL light begins blinking. (So maybe it's too much for the modem and it resets?) Other than that it is amazing, but I'd like to try and fix some of these problems. If you need more information, let me know on how to get it for you and what to do. Thanks for the help!

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• Sudden "No Signal" in HDMI-DVI connection

  - by nazikus

  Yesterday I have connected external display Asus VW192C to my laptop Dell XPS 14-L421X via HDMI-to-DVI-D cable. And it worked perfectly fine from start. The day after, Asus screen went blank showing "No signal". Every time I connection/disconnection cable or power off/on the display it says "No signal". And I didn't change any system configurations meanwhile. To troubleshoot the problem, I have tried to connect laptop to TV (hdmi-to-hdmi) - it was fine. I've tried to connect a different laptop to the display via the same cable - worked fine as well. So its obviously something on system level, either Windows or graphics drivers. Also it seems that Windows still see the external display (I can move mouse pointer away from the main screen in Extended mode), but there's just no signal. Any ideas? What else to try? PS. My laptop has 2 graphics cards - GeForce 630M and Intel HD 4000 using NVidia Optimus technology. I have updated to latest Intel and NVidia drivers, still didn't help. PPS. Although I shouldn't have updated (from Intel support): "our Intel generic graphics drivers from the Intel website do not support using both Intel Graphics 4000 and NVidia GeForece GT630M". Nevertheless, it should not affect connectivity to additional display.

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• Windows Server 2008 R2 Standard to Enterprise Problems

  - by boburob

  A few months ago I setup a Citrix XenApp cluster running on Windows Server 2008 R2 Standard Edition using the temporary 180 day license key. Recently the company bought a Windows Server 2008 R2 Enterprise DataCenter license. This means I need to upgrade the Windows edition from Standard to Enterprise. I attach the disk to the VM and start the upgrade process through XenCenter, it runs through all checks and unpacks all Windows files and seems to create a Windows Setup partition, it then reboots and trys to boot into this partition and I get a blue screen telling me to CHKDSK the hard drive with the following error message: STOP: 0x0000007B As XenApp is already setup and working I really do not want to go down the route of rebuilding this server (as I already had to do this once down to issues with XenApp). The server did have 8GB of RAM assigned to it, I have tried reducing this down to 2GB's as I read this can cause an issue. Also I can boot back into the Windows Server 2008 R2 Standard partition without any problems. UPDATE I have managed to get round the urgency by re-arming the license, giving me another 180 day trial..but would be nice to work out why this is happening!

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