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• Web Server Routing Based On Location

  - by Eric

  I have a website that has users from both Hong Kong and Australia. Unfortunately, since the server is located in Australia, users from Hong Kong are going to suffer latency problems. Traffic has to go through US before travelling back to Australia. So I've setup a server in Hong Kong as well, and users using the .hk TLD are going to be redirected to the Hong Kong web server. It shares the same database server with the Australian server but due to aggressive SQL query caching, impact on performance from latency from SQL queries are negligible. But for users accustomed to the Hong Kong website but have since traveled to Australia, they suffer from additional latency because they go to the .hk site which redirects to the HK server even when they're in Australia. The website is targeted at international students from Hong Kong so this is an significant issue for me. Instead of redirecting users to the closest web server based on the TLD, how do I redirect users based on their location? Currently I am using nginx, postgres and Django. Say I know how to estimate users' location based on users' IP addresses, what is my next step? At what level would I work on? What topic should I read up?

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• Domain joined computer unable to access servers through VPN

  - by kscott

  Our servers are in a virtual off site hosting center, our office has a vpn connection to the data center, but for reasons I don't understand we also have to connect to the Citrix Access Gateway (CAG) client in order to access the servers. I am a programmer with rather limited ops knowledge including a weak grasp of networking and terminology. Bear with me. I was just given a new laptop, which is a 64 bit Windows 7 system unlike my previous 32 bit Windows XP desktop which was able to connect without issue. My laptop has been joined to the domain so that I login with my AD credentials, I am able to connect to the CAG and get authenticated, and after doing this I can ping our servers and they resolve to the correct internal IP addresses, but I am unable to use remote desktop to the servers, connect to SQL servers through my local SQL Management Studio, navigate to them through the file system, or view any of our internal intranet websites. All of which I was able to do previously. I have tried turning off my Windows firewall and the problem remains, the DNS servers are set to the correct IPs of our domain controllers, and the ops guys here are a little stumped. Does any one have any suggestions?

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• MySQL Cluster ndb_mgmd error

  - by Patryk

  I set up MySQL Cluster on Ubuntu. My ndb_mgmd.cnf file looked: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.30 Now I want to edit this configuration, so I changed this file: [NDBD DEFAULT] NoOfReplicas=2 DataDir= /var/lib/mysql-cluster # Management Node [NDB_MGMD] NodeId=1 HostName=192.168.204.20 DataDir=/var/lib/mysql-cluster # Storage Nodes (one for each node) [NDBD] NodeId=2 HostName=192.168.204.25 DataDir=/var/lib/mysql-cluster [NDBD] NodeId=3 HostName=192.168.204.26 DataDir=/var/lib/mysql-cluster # SQL Nodes (one for each node) [MYSQLD] NodeId=4 HostName=192.168.204.25 [MYSQLD] NodeId=5 HostName=192.168.204.26 But ndb_mgm > show; still shows: Connected to Management Server at: localhost:1186 Cluster Configuration --------------------- [ndbd(NDB)] 2 node(s) id=2 (not connected, accepting connect from 192.168.204.25) id=3 (not connected, accepting connect from 192.168.204.26) [ndb_mgmd(MGM)] 1 node(s) id=1 @192.168.204.20 (mysql-5.1.51 ndb-7.1.9) [mysqld(API)] 1 node(s) id=4 (not connected, accepting connect from 192.168.204.30) I tried: sudo /etc/init.d/mysql-ndb-mgm restart sudo ndb_mgmd --initial sudo ndb_mgmd -f /etc/mysql/ndb_mgmd.cnf And nothing works. Any help?

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• Windows errors, how do I find root cause and fix it? Getting several errors

  - by Eric Martin

  My server is having issues and not responding to customer's https requests. I checked the event viewer and found several errors. These two are listed a couple of times: WINS encountered a database error. This may or may not be a serious error. WINS will try to recover from it. You can check the database error events under 'Application Log' category of the Event Viewer for the Exchange Component, ESENT, source to find out more details about database errors. If you continue to see a large number of these errors consistently over time (a span of few hours), you may want to restore the WINS database from a backup. The error number is in the second DWORD of the data section. And this one: An error occured while using SSL configuration for socket address 0.0.0.0:444. The error status code is contained within the returned data. SQL Server is not ready to accept new client connections. Wait a few minutes before trying again. If you have access to the error log, look for the informational message that indicates that SQL Server is ready before trying to connect again. [CLIENT: xxx.xxx.xxxx.xxx] I also found this in the event viewer but the computer has been restarted since this message and I have not seen it again. Configuring the Page file for crash dump failed. Make sure there is a page file on the boot partition and that is large enough to contain all physical memory. This is my virtual memory settings: I'm not familiar with WINS so I wasn't sure if that is where I start or how to resolve it. Is the WINS error causing the other problems or should I be looking somewhere else?

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• Two hosted servers, one public - VPN?

  - by Aquitaine

  Hello there, Web developer here who has to occasionally wear a system & network admin hat (small company). We currently have a single hosted server running Windows Server 2003 that runs both our web server (IIS/Coldfusion) and our database server (SQL Server 2008). We lock down the SQL server by allowing only specific IPs to connect to it. Not ideal but it's worked thus far. We're moving up to two distinct servers and I want to take the opportunity to 'get things right' and make only the web server face the public. What I need to be able to do is to allow only a handful of people to connect to the database server. Rather than using an IP allow list, I'd prefer to use a VPN to let people through so that access is based on the user and not simply the user's location. I'm leaning toward something like OpenVPN, just so I can stick with Server 2008 Web edition. Do I: Use the web server as a VPN server and set up the database server to only accept connections from the web server? Is there an extra step required to make connections to, say, db.mycompany.com route through the VPN rather than through a different connection? I'm ignorant of this part of network infrastructure stuff. Or, Set up a VPN server on the database server as the only public-facing server connection so that there aren't any routing issues to deal with? I know this is Network 101 stuff but I thought I'd ask before just blundering through it since it could affect the company a bit. Thanks very much!

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• Robocopy failure with Windows Server 2008 Scheduled Task

  - by CC

  So I have a batch script for robocopy. Running this from the command line does exactly what I want. robocopy "D:\SQL Backup" \\server1\Backup$\daily /mir /s /copyall /log:\\lmcrfs4g\NavBackup$\robocopyLog.txt /np Then I create a Scheduled Task in Windows Server 2008. If I set up the task to use my Domain Admin account, great. But I'm trying to get it to run as a separate domain account for Scheduled Tasks. If I use that account, folders get created, but files aren't copied. I get the following error: 2011/02/17 15:41:48 ERROR 1307 (0x0000051B) Copying NTFS Security to Destination Directory D:\SQL Backup\folder\ This security ID may not be assigned as the owner of this object. I've verified my domain\Scheduled Tasks account has Full Control NTFS permissions on both the source and destination, and the Full Control Sharing on my hidden \server1\backup$ share. Just for giggles, I've tried adding the domain account to the local Administrators group on both servers. This works fine, but that seems like a lot of privileges just to copy files. Any ideas on what I'm missing?

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• Database problem with MS JET

  - by Zimmy-DUB-Zongy-Zong-DUBBY

  I am migrating a bunch of sites which each use an Access database (or whatever an MDB file is). If I try to load the site, I get the following error: Microsoft OLE DB Provider for SQL Server error '80004005' [DBNETLIB][ConnectionOpen (Connect()).]SQL Server does not exist or access denied If I rename the MDB file, I get a complaint that the file does not exist, which makes sense. If the file is named correctly, the site tries to load for about 30 seconds or so, and then just fails with the above message. During this waiting period, I can see a lock file being created (and then at some point removed). The MDB file and it's parent dir have full permissions granted to all users. Given that the lock file is successfully created and removed, I don't think that this is a "real" permission issue. The OS is Windows Server 2003 SP2. I am not sure about much more detail on it's config wrt Access databases. I also don't know what version it is expected to be. VB code in question: set oConn=server.createobject("adodb.connection") DSNtemp="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=D:\fullPathGoesHere\db\sitedb.mdb" oConn.Open DSNtemp

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• Mysql master-master not replicating

  - by frankil

  I'm setting up a master-master mysql replication on two servers (db1 and db2). I started with setting up db2 as a slave to db1 and that works fine. But when I set up db1 as a slave to db2 it isn't replicating. On the face of it everything looks fine but the data isn't replicating. There are no errors in either of the error logs. The slave status is updating the bin log position. I have used mysqlbinlog to examine both the binlog on the db2 and the relay log on db1 and all of the queries are going in there, but not being executed to db1. "show slave status" on both servers shows that both the slave io and sql threads are "Yes" and that the relay log position is updated by the sql thread. Also on both servers: >echo "show processlist" | mysql | grep "system user" 166819 system user NULL Connect 3655 Waiting for master to send event NULL 166820 system user NULL Connect 3507 Has read all relay log; waiting for the slave I/O thread to update it NULL Relevant config for db1: server-id = 1 log-slave-updates replicate-same-server-id = 0 auto_increment_increment = 4 auto_increment_offset = 1 master-host = db2 master-port = 3306 master-user = slaveuser master-password = *** skip-slave-start sync_binlog = 1 binlog-ignore-db=mysql Config for db2 server-id = 2 log-slave-updates replicate-same-server-id = 0 auto_increment_increment = 4 auto_increment_offset = 2 master-host = db1 master-port = 3306 master-user = slaveuser master-password = *** sync_binlog = 1 relay-log=mysql-relay-bin binlog-ignore-db=mysql What else can I look for to make sure db1 executes the queries from db2?

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• Hide subdomain AND subdirectory using mod_rewrite?

  - by Jeremy

  I am trying to hide a subdomain and subdirectory from users. I know it may be easier to use a virtual host but will that not change direct links pointing at our site? The site currently resides at http://mail.ctrc.sk.ca/cms/ I want www.ctrc.sk.ca and ctrc.sk.ca to access this folder but still display www.ctrc.sk.ca. If that makes any sense. Here is what our current .htaccess file looks like, we are using Joomla so there already a few rules set up. Help is appreciated. # Helicon ISAPI_Rewrite configuration file # Version 3.1.0.78 ## # @version $Id: htaccess.txt 14401 2010-01-26 14:10:00Z louis $ # @package Joomla # @copyright Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved. # @license http://www.gnu.org/copyleft/gpl.html GNU/GPL # Joomla! is Free Software ## ##################################################### # READ THIS COMPLETELY IF YOU CHOOSE TO USE THIS FILE # # The line just below this section: 'Options +FollowSymLinks' may cause problems # with some server configurations. It is required for use of mod_rewrite, but may already # be set by your server administrator in a way that dissallows changing it in # your .htaccess file. If using it causes your server to error out, comment it out (add # to # beginning of line), reload your site in your browser and test your sef url's. If they work, # it has been set by your server administrator and you do not need it set here. # ##################################################### ## Can be commented out if causes errors, see notes above. #Options +FollowSymLinks # # mod_rewrite in use RewriteEngine On ########## Begin - Rewrite rules to block out some common exploits ## If you experience problems on your site block out the operations listed below ## This attempts to block the most common type of exploit `attempts` to Joomla! # ## Deny access to extension xml files (uncomment out to activate) #<Files ~ "\.xml$"> #Order allow,deny #Deny from all #Satisfy all #</Files> ## End of deny access to extension xml files RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR] # Block out any script trying to base64_encode crap to send via URL RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR] # Block out any script that includes a <script> tag in URL RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] # Block out any script trying to set a PHP GLOBALS variable via URL RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] # Block out any script trying to modify a _REQUEST variable via URL RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) # Send all blocked request to homepage with 403 Forbidden error! RewriteRule ^(.*)$ index.php [F,L] # ########## End - Rewrite rules to block out some common exploits # Uncomment following line if your webserver's URL # is not directly related to physical file paths. # Update Your Joomla! Directory (just / for root) #RewriteBase / ########## Begin - Joomla! core SEF Section # RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !^/index.php RewriteCond %{REQUEST_URI} (/|\.php|\.html|\.htm|\.feed|\.pdf|\.raw|/[^.]*)$ [NC] RewriteRule (.*) index.php RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] # ########## End - Joomla! core SEF Section EDIT Yes, mail.ctrc.sk.ca/cms/ is the root directory. Currently the DNS redirects from ctrc.sk.ca and www.ctrc.sk.ca to mail.ctrc.sk.ca/cms. However when it redirects the user still sees the mail.ctrc.sk.ca/cms/ url and I want them to only see www.ctrc.sk.ca.

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• Error code 1005 (errno: 121) upon create table while restoring MySQL database from a dump

  - by Jonathan

  I have a linux prod machine and a Win7 64bit dev machine. My workflow includes dumping the production MySQL database on the linux machine and restoring it in my local MySQL database on the windows machine (using SQLyog). This worked fine for a long time. Following some trouble, I formatted and reinstalled my windows dev machine. Since then I'm unable to restore the db on it. I keep receiving the following error: Query: CREATE TABLE `auth_group` ( `id` int(11) NOT NULL auto_increment, `name` varchar(80) collate utf8_unicode_ci NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `name` (`name`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci Error occured at:2010-06-26 17:16:14 Line no.:30 Error Code: 1005 - Can't create table 'ap_site.auth_group' (errno: 121) Notice that this is the first create table statement in the sql dump file. This error occurs both on MySQL Community Server 5.1.41 and 5.1.48 and with SQLyog Community 8.0.4 and 8.5.1. I really don't know what's different in my configuration from before the reinstall and now and why does it have this effect. Restoring from sql dump is something I need to keep on doing, so I need a permanent fix and not a tailored workaround.

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• Cannot open files in Visual Studio but in Delphi and Notepad

  - by Andrew J. Brehm

  About an hour ago Visual Studio 2008 decided that it cannot find files any more. This is on 64 bit Windows Vista. When I right-click on a text file (source code or otherwise) and select "open with" and "Visual Studio 2008", I get the following error (example): Windows cannot find 'C:\Users\ajbrehm\Documents\Visual Studio 2008\Projects\Hello Prism\Hello Prism\Main.pas'. Make sure you typed the name correctly, and then try again. When I right-click the same file and select "open with" and "Delphi 2010" or "Notepad" (both other options available for text files on my system), the file opens correctly. Oddly enough when the file is part of a Visual Studio project and I open the project itself with Visual Studio (this works), I can open the file from within Visual Studio. Any ideas what might be going on? This started about an hour after I made a complete backup of my Vista VM and after I installed IIS 7, SQL Express, and Sourcegear Vault. The first files I noticed couldn't be opened in Visual Studio any more where Pascal source files in checked-outed folders from Vault. And Vault also seems to be unable to see one of the sources files and claims they don't exist. I found out about Visual Studio not opening ANY files any more when I tried to recreate the file Vault refused to see. Update: I just checked. Another user, "administrator", can still open text files with Visual Studio 2008. Both users have administrator rights. Update: I just restored the hours-old backup. Same problem. Apparently whatever triggered this happened before the install of IIS 7 and SQL Express. Never noticed it before.

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• Dovecot unable to perform mysql query

  - by NathanJ2012

  I have been following the ISPMail tutorials on workaround.org (the 2.9 Wheezy version) and thus far everything has been working fine. When I reached the step to "Testing email delivery" step I noticed a error about the query in the output log from /var/log/mail.log. May 14 06:48:59 mail postfix/pickup[17704]: EA4AD240A98: uid=0 from=<root> May 14 06:48:59 mail postfix/cleanup[17776]: EA4AD240A98: message-id=<[email protected]> May 14 06:48:59 mail postfix/qmgr[17706]: EA4AD240A98: from=<[email protected]>, size=429, nrcpt=1 (queue active) May 14 06:49:00 mail dovecot: auth-worker(17782): mysql(127.0.0.1): Connected to database mailserver May 14 06:49:00 mail dovecot: auth-worker(17782): Warning: mysql: Query failed, retrying: Table 'mailserver.users' doesn't exist May 14 06:49:00 mail dovecot: auth-worker(17782): Error: sql([email protected]): User query failed: Table 'mailserver.users' doesn't exist (using built-in default user_query: SELECT home, uid, gid FROM users WHERE username = '%n' AND domain = '%d') May 14 06:49:00 mail dovecot: lda([email protected]): msgid=<[email protected]>: saved mail to INBOX May 14 06:49:00 mail postfix/pipe[17780]: EA4AD240A98: to=<[email protected]>, relay=dovecot, delay=0.09, delays=0.03/0.01/0/0.06, dsn=2.0.0, status=sent (delivered via dovecot service) May 14 06:49:00 mail postfix/qmgr[17706]: EA4AD240A98: removed I found this rather interesting that it isn't finding the DB so I went back through and checked EVERY file that I touched that involved the DB (including the postfix cf files) and everything is correct so I am baffled at this point, but oddly enough it would seem the email still made it to the correct destination in /var/vmail/domain.com/. Should I be worried about this or am I missing something here? Since it is a message from dovecot it would be the query from dovecot-sql.conf.ext which I am including here driver = mysql connect = host=127.0.0.1 dbname=mailserver user=blocked password=***REMOVED*** default_pass_scheme = PLAIN-MD5 password_query = SELECT email as user, password FROM virtual_users WHERE email='%u';

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• Can I format a Veritas cluster shared volume from windows?

  - by spaghettidba

  We have a Microsoft Failover Cluster with dynamic disks managed by Veritas Storage Foundation. Today the sysadmins added a new disk for SQL Server but the cluster size on the volume was wrong, so I issued a quick format to change it. The disk volume failed, the SQL Server group failed as well and the cluster became unresponsive. After some minutes I managed to fail over to a passive node. The SAN admins say it's my fault because I shouldn't have formatted the disk from the Windows format applet, but I should have used Veritas Enterprise Administrator instead. Can a format operation bring offline a whole cluster group this way? Relevant error messages: From the eventlog: The cluster resource host subsystem (RHS) stopped unexpectedly. An attempt will be made to restart it. This is usually due to a problem in a resource DLL. Please determine which resource DLL is causing the issue and report the problem to the resource vendor. From the cluster.log ERR [RCM] rcm::RcmResControl::DoResourceControl: ERROR_RESOURCE_CALL_TIMED_OUT(5910)' because of 'Control(STORAGE_GET_DISK_INFO_EX) to resource 'NameOfTheDiskGroup' timed out.' Veritas Documentation: Excerpt from Symantec's documentation: Note: Before manually creating the resource, you must format the cluster-shared volume with NTFS using the VEA GUI and mount it on the node where you are trying to create the resource. Does this mean the disk cannot be formatted from Windows? I don't read it that way. For the record, I formatted many disks using the Windows applet in the past and nothing bad happened.

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• Team Foundation Server 2008 - TF220056 Error during installation

  - by David

  I'm attempting to install Team Foundation Server 2008 on a Windows Server 2003 instance that exists under Hyper-V. The SQL Server database itself is held on the root partition of the Hyper-V server and has the Reporting Services installed (so I've solved the TF220059 error already). After hitting "Next " after typing the name of the SQL Server I get this error: --------------------------- Microsoft Visual Studio 2008 Team Foundation Server Setup --------------------------- TF220056: An unrecoverable error occurred while trying to check the status of the Team Foundation database. Installation cannot continue. Check the install log for more details. --------------------------- OK --------------------------- The error log's stack trace makes it look like a bug in the TFS installer itself: [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: System.IO.IOException: The directory name is invalid. [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) [03/22/10,19:14:42] TFSUI: [2] tfsdb.exe: at System.IO.__Error.WinIOError() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at System.IO.Path.GetTempFileName() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.Commands.InstallerCommand.get_Log() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.Commands.InstallerCommand.Run() [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: at Microsoft.TeamFoundation.DatabaseInstaller.CommandLine.CommandLine.RunCommand(String[] args) [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe: The directory name is invalid. [03/22/10,19:14:43] TFSUI: [2] tfsdb.exe check failed with error code: 100 I'm running the installer as the domain Administrator, although the server is a Terminal Server in Application Mode, might that be the cause of the problems?

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• Small Business HP Virtualisation and iSCSI SAN Options

  - by Robin Day

  We are a small business that hosts our core product on a number of HP servers. Our core production setup is 1x HP DL380, high powered for a SQL Server Database 1x HP DL360, mid powered for our core application server 6x HP DL320, low powered for our front ends We run our training / testing / support systems on a similar setup, the servers are just older and less powerful. Unfortunately this is now causing us issues as the system has grown beyond the capabilities of these older servers. Upgrading these servers would be expensive and we believe that virtualisation is probably the way to go for the future. Locally we run a number of test / dev environments on ESXi using Direct Storoage on a couple of high powered DL360's and these are performing fairly well. We're thinking that instead of replacing all of our test servers that we can implement an iSCSI SAN and one or two high powered hosts. Hopefully looking that when it comes to replace our live servers as well that we can just expand the virual environment to cope. So my question is... Can anyone offer any advice on some suitable options? We have generally always been extremely happy with HP servers, all of our kit is currently HP, therefore our preference would be to stick with HP, however, I'm always happy to hear about other options. I'm hoping that initially a budget of around 15-25k (GBP) would be suitable, this could potentially be increased if I had confidence that the system would pave the way for a cost effective upgrade of our live systems in the future as well. I am new to SAN's and my only real experience is playing with OpenFiler on some old desktops. I think iSCSI should be suitable, but I've not done any research into how SQL server may perform. I've had a browser through HP's sites and see plenty of information about EVA, MSA, LeftHand, etc. However, from looking at all that, I don't see which options would be best and more importantly I don't know exactly what I would need to buy. Any help, links, opinions would be much appreciated. Thanks

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• PHPMyAdmin: "General relation features: Disabled"

  - by Simón

  I've been looking around for something like this for a while, and I've found some tips on similar issues, but not exactly the same. I really don't know what to do. I downloaded and installed WAMP, and I have a MySQL and PHPMyAdmin setup according to common indications that can be found everywhere (securing MySQL root account, etc.). When I log into PHPMyAdmin (either as root or as pma), I see the following message at the bottom of the page: The additional features for working with linked tables have been deactivated. To find out why click here. And when following the link, got a page with the following: Server: localhost $cfg['Servers'][$i]['pmadb'] ... OK $cfg['Servers'][$i]['relation'] ... OK General relation features: Disabled $cfg['Servers'][$i]['table_info'] ... OK Display Features: Disabled $cfg['Servers'][$i]['table_coords'] ... OK $cfg['Servers'][$i]['pdf_pages'] ... OK Creation of PDFs: Disabled $cfg['Servers'][$i]['column_info'] ... OK Displaying Column Comments: Disabled Bookmarked SQL query: Disabled Browser transformation: Disabled $cfg['Servers'][$i]['history'] ... OK SQL history: Disabled $cfg['Servers'][$i]['designer_coords'] ... OK Designer: Disabled Somebody please explain to me, why the heck if all settings are "OK" the features remain "Disabled"? Note: at first all the settings were "not OK" and I managed to add the settings to config.inc.php, and then created the tables using scripts/create_tables.php. Of course I have already tried restarting the server or clearing the browser cache (several times, so I am sure the problem comes elsewhere).

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• Cannot access server shares over VPN

  - by DuncanDavies

  I've set up a single hosted server to use as a development environment for a web-based application. The web app is served up fine on port 80, however I'm struggling to get my VPN to behave how I'd expect so the developers don't have the access they require. The VPN connects fine and I can access the back-end database (SQL Server) which resides on the server with the client tools from the laptops. However they cannot access any shared folders. The server's local IP address is 10.x.x.x, and I've assigned a static IP address pool to RRAS (of 192.168.100.1 - 20). The clients pick up a valid IP Address (i.e. 192.168.100.9) when they connect. There is no name resolution setup, DNS or WINS. When connected via VPN the clients can ping the server (192.168.100.1) by IP Address, but cannot map a drive to a shared folder (net use * \\192.168.100.1\xxxxx) - I get 'System error 53 has occurred. The network path was not found.' I don't understand why I can ping by the ip, but not map by it. Some details: Server OS is Windows 2008 (Datacenter) VPN is SSTP using RRAS Clients are all Windows 7 I've tried temporarily disabling the firewalls So, why can we not access the file system when everything else (ping, RDP, SQL Server clients tools) works? Thanks for your help Duncan

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• How does Windows 7 taskbar "color hot-tracking" feature calculate the colour to use?

  - by theyetiman

  This has intrigued me for quite some time. Does anyone know the algorithm Windows 7 Aero uses to determine the colour to use as the hot-tracking hover highlight on taskbar buttons for currently-running apps? It is definitely based on the icon of the app, but I can't see a specific pattern of where it's getting the colour value from. It doesn't seem to be any of the following: An average colour value from the entire icon, otherwise you would get brown all the time with multi-coloured icons like Chrome. The colour used the most in the image, otherwise you'd get yellow for the SQL Server Management Studio icon (6th from left). Also, the Chrome icon used red, green and yellow in equal measure. A colour located at certain pixel coordinates within the icon, because Chrome is red -indicating the top of the icon - and Notepad++ (2nd from right) is green - indicating the bottom of the icon. I asked this question on ux.stackoverflow.com and it got closed as off-topic, but someone answered with the following: As described by Raymond Chen in this MSDN blog article: Some people ask how it's done. It's really nothing special. The code just looks for the predominant color in the icon. (And, since visual designers are sticklers for this sort of thing, black, white, and shades of gray are not considered "colors" for the purpose of this calculation.) However I wasn't really satisfied with that answer because it doesn't explain how the "predominant" colour is calculated. Surely on the SQL Management Studio icon, the predominant colour, to my eyes at least, is yellow. Yet the highlight is green. I want to know, specifically, what the algorithm is.

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• How to connect FreeBSD Jail to network

  - by jgtumusiime

  So recently I successfully installed and configured a freebsd jail and I would like to install software within my jail but I cannot connect to the network. I'm trying to setup an apache+php+mysql installation within the jail and have the webserver accessible by users. Here is my rc.conf for the jail. ... jail_enable="YES" # Set to NO to disable starting of any jails jail_list="mambo2" # Space separated list of names of jails jail_mambo2_rootdir="/usr/jails/j01" # jail's root directory jail_mambo2_hostname="mambo2.ug" # jail's hostname jail_mambo2_ip="192.168.100.174" # jail's IP address jail_mambo2_devfs_enable="YES" # mount devfs in the jail jail_mambo2_devfs_ruleset="mambo2_ruleset" # devfs ruleset to apply to jail here is my jail ifconfig output mambo2# ifconfig rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8<VLAN_MTU> ether 00:c1:28:00:48:db media: Ethernet autoselect (100baseTX <full-duplex>) status: active plip0: flags=108810<POINTOPOINT,SIMPLEX,MULTICAST,NEEDSGIANT> metric 0 mtu 1500 lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 mambo2# It does not show the IP address I configured within /etc/rc.conf. But, when I list the running jails, it shows the right IP address. Here is a list of jails running [root@mambo /usr/home/jtumusiime]# jls JID IP Address Hostname Path 5 192.168.100.174 mambo2.ug /usr/jails/j01 I also created a /etc/resolv.conf for nameservers. This was not in existence so I'm not quite sure if it is necessary? mambo2# cat /etc/resolv.conf nameserver 192.168.100.251 nameserver 8.8.8.8 mambo2# my host has 4 ip addresses, 3 public and one private: 192.168.100.173 I tried creating a jail using ezjail and this does not work out. [root@mambo /usr/src]# ezjail-admin update -p -i Error: Cannot find your copy of the FreeBSD source tree in . Consider using 'ezjail-admin install' to create the base jail from an ftp server. [root@mambo /usr/src]# I have an updated copy of freebsd 7.1 source tree from SVN in /usr/src/ [root@mambo /usr/src]# svn info Path: . URL: http://svn.freebsd.org/base/release/7.1.0 Repository Root: http://svn.freebsd.org/base Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f Revision: 243371 Node Kind: directory Schedule: normal Last Changed Author: kensmith Last Changed Rev: 186660 Last Changed Date: 2009-01-01 01:57:14 +0300 (Thu, 01 Jan 2009) [root@mambo /usr/src]# and I did #make buildworld while building the first jail i.e mambo2 Here is an excerpt of ouput of ezjail-admin install ... 221 Goodbye. Trying 193.162.146.4... Connected to ftp.freebsd.org. 220 ftp.beastie.tdk.net FTP server (Version 6.00LS) ready. 331 Guest login ok, send your email address as password. 230 Guest login ok, access restrictions apply. Remote system type is UNIX. Using binary mode to transfer files. 200 Type set to I. 550 pub/FreeBSD-Archive/old-releases/i386/7.1-RELEASE/base: No such file or directory. 221 Goodbye. Could not fetch base from ftp.freebsd.org. Maybe your release (7.1-RELEASE) is specified incorrectly or the host ftp.freebsd.org does not provide that release build. Use the -r option to specify an existing release or the -h option to specify an alternative ftp server. Querying your ftp-server... The ftp server you specified (ftp.freebsd.org) seems to provide the following builds: Trying 193.162.146.4... total 10 drwxrwxr-x 13 1006 1006 512 Feb 20 2011 8.2-RELEASE drwxrwxr-x 13 1006 1006 512 Apr 10 2012 8.3-RELEASE lrwxr-xr-x 1 1006 1006 16 Jan 7 2012 9.0-RELEASE -> i386/9.0-RELEASE drwxrwxr-x 7 1006 1006 1024 Feb 19 2012 ISO-IMAGES -rw-rw-r-- 1 1006 1006 637 Nov 23 2005 README.TXT drwxrwxr-x 5 1006 1006 512 Nov 2 02:59 i386 I do not want to upgrade my freebsd installation. I have googled around; but all in vail. Thank you

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• Network card/driver stops under heavy load

  - by Uwe Keim

  Since about approx. 2 month, I do have the following issue with my approx. 1 year old development machine (Windows 7, 64 bit): When doing network intensive operations, like e.g. executing some SQL script on a remote SQL server to select or update 1000 of records, the network card stops working. I.e. suddenly, No network connection is present anymore. No internet, no local connection, simply nothing. The only resolution so far I found is to disable my network card and then simply enable it back, like in the following screenshots: 1.) Click "Deactivate" 2.) Click "Activate" (German screenshots only, sorry) Now this is an acceptable solution to work around this issue, but I would love to have this fixed, since it suddenly stops me from working when I'm connected remotely via VPN/RDP on my machine (Win7 64bit). So my question is: Could you imagine a possible cause for this issue and give some hints how to hunt/resolve it? I could imagine that this is a driver issue, a hardware issue or even some kind of background software issue like a software firewall or a virus scanner.

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• Why do hosts prefer Linux to Windows Server?

  - by iconiK

  So far I see a HUGE majority of hosts provide only Linux shared hosting, providing Windows only to VPS (or even to only dedicated servers). Why is it so? While Windows is a lot more expensive than Linux (though it depends on a lot of factors, not just initial and support license cost), it also provides ASP.NET, IIS and of course, Microsoft SQL Server. I know in the past it might have been because of cPanel being Linux only but now they have a Windows version. But still, why is Linux predominantly used on shared hosting? PHP works on both systems. IIS can be (and probably is) faster. MySQL runs on both systems as well. cPanel has a Windows version. Python, Perl, Ruby, all run on Windows as well. You even have MS SQL Server Express, which I find more superior than MySQL in both speed and features. Access is there for low usage requirements, as is SQLite (which is so great for quick small stuff). And with PowerShell you have a good alternative to the Unix shell. EDIT: I am looking for common reasons, I realize each hosting company (and/or it's clients) may have different needs. This becomes very important when you get to VPS or Cloud which give you a full operating system to use.

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• mysqldump skip one table

  - by danneth

  I'm running a cronjob to backup our system using mysqldump. The database contains 90 or so tables. One of these tables is HUGE and every once in a while causes the dump to fail. From the manual I see that you can specify specific tables to dump shell> mysqldump [options] db_name [tbl_name ...] This got me thinking. What if I have two jobs, one for dumping the huge table, and one for all the others. To accomplish this it would be nice if I could to something like shell> mysqldump -u backupuser -p database huge_table > db_huge_table.sql shell> mysqldump -u backupuser -p database --skip huge_table > db_rest.sql Unfortenately I'm not seeing such and option. I could of course explicitly state the 90 tables, but that just seems like a mess. Another option would be a script of some sort, but before checking that route I'll try this resource. MySQL is 5.1.61 on CentOS 6.2

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• Need help trying to diagnose Symmetrix SAN performance issues

  - by arcain

  I am helping to benchmark hardware for a new SQL Server instance, and the volume presented to the OS for the data files is carved from a set of spindles on a Symmetrix SAN. The server has yet to have SQL Server installed, so the only activity on the box is our benchmarking. Now, our storage engineers say that this volume and it's resources are dedicated to our new server (I don't have access to see the actual SAN config) however the performance benchmarks are troubling. For example, the numbers look good until suddenly, and randomly, we see in our IO benchmarking tool wait times of 100 seconds, and disk queue lengths of 255 in perfmon. This SAN has an 8 GB cache, plus there are other applications besides ours that use the SAN. I'm wondering if (even though the spindles for our volumes should be dedicated to us) the cache may be getting hammered during the performance testing, or perhaps the spindles our volumes are on aren't really dedicated to us. We're not getting much traction from our storage engineers in helping us track down the problem, so if anybody has experience with diagnosing a problem like this and would like to share insights and troubleshooting methodologies, I'd appreciate it.

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• Oracle: Getting ORA-01195 and ORA-01110 when attempting resetlogs

  - by MacAnthony

  I am trying to get our database to startup. When I login to sqlplus and do a startup, I get the message: Total System Global Area 534462464 bytes Fixed Size 2215064 bytes Variable Size 331350888 bytes Database Buffers 192937984 bytes Redo Buffers 7958528 bytes Database mounted. ORA-01589: must use RESETLOGS or NORESETLOGS option for database open So I do a shutdown, startup mount (which works fine) and then run: SQL> alter database recover using backup controlfile until cancel; alter database recover using backup controlfile until cancel * ERROR at line 1: ORA-00283: recovery session canceled due to errors ORA-19909: datafile 1 belongs to an orphan incarnation ORA-01110: data file 1: '/<path>/system01.dbf' SQL> alter database open resetlogs; alter database open resetlogs * ERROR at line 1: ORA-01195: online backup of file 1 needs more recovery to be consistent ORA-01110: data file 1: '/<path>/system01.dbf' I know I've used instructions to get me past this error before, but I seem to be having trouble tracking it down. A bit of history: We wanted to refresh the data in this from another db so we attempted to do a expdb/impdb into this instance. The impdb did not complete correctly and got an end of file error message in it and hung (I still have the message in a log if it's important). Since the instance would start at this point, we decided to use the hotbackup process we have to restore the db. The hotbackups are from another server/instance. We went through the same process 2 weeks ago. At the point of recreating the control file is where we got to the issue above.

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• Error code 1005 (errno: 121) upon create table while restoring MySQL database from a dump

  - by Jonathan

  I have a linux prod machine and a Win7 64bit dev machine. My workflow includes dumping the production MySQL database on the linux machine and restoring it in my local MySQL database on the windows machine (using SQLyog). This worked fine for a long time. Following some trouble, I formatted and reinstalled my windows dev machine. Since then I'm unable to restore the db on it. I keep receiving the following error: Query: CREATE TABLE `auth_group` ( `id` int(11) NOT NULL auto_increment, `name` varchar(80) collate utf8_unicode_ci NOT NULL, PRIMARY KEY (`id`), UNIQUE KEY `name` (`name`) ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci Error occured at:2010-06-26 17:16:14 Line no.:30 Error Code: 1005 - Can't create table 'ap_site.auth_group' (errno: 121) Notice that this is the first create table statement in the sql dump file. This error occurs both on MySQL Community Server 5.1.41 and 5.1.48 and with SQLyog Community 8.0.4 and 8.5.1. I really don't know what's different in my configuration from before the reinstall and now and why does it have this effect. Restoring from sql dump is something I need to keep on doing, so I need a permanent fix and not a tailored workaround.

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