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• Win 2008 r2 -- client and server are both behind a NAT

  - by Mike Dehari

  I am new to win2008. Have Win2008 R2 installed. Need to know how a client system (Win7), using remote desktop, terminal server, or whatever windows 2008 provides to connect to it (as a user or an admin). Both the client (Win7) and the server (win2008) are inside a NAT (with 192.168......... addresses). Both have real internet addresses (they are in different cities 173.64.......). How can I use the internet from the client (Win7) to connect to the server (Win2008). On both systems, I have "allowed other systems to connect". I am familiar with tcp/ip, ports......etc.

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• Why the huge difference between etch and lenny MySQL

  - by rmarimon

  I've been working on a program for the last year. The development environment is working with a database in MySQL running on debian etch version mysql Ver 14.12 Distrib 5.0.32, for pc-linux-gnu (i486) using readline 5.2. The production environment is working on debian lenny with version mysql Ver 14.12 Distrib 5.0.51a, for debian-linux-gnu (i486) using readline 5.2. I was just timing some database access and what takes in the development environment 150 seconds, takes 300 in the production environment. I checked the /etc/mysql/my.cnf files on both systems and the only differences are # development bind-address = 10.168.1.82 log_bin = /var/log/mysql/mysql-bin.log # production bind-address = 127.0.0.1 myisam-recover = BACKUP #log_bin = /var/log/mysql/mysql-bin.log I dump a database from the production and load it into the development and with the same server everything takes half the time !!! What should I check?

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• Are SANs unreliable?

  - by chaos

  So at the place where I wear one of my various hats, this one representing a development rather than admin role, there's been an initiative to move to SANs. So far, I have been spectacularly unimpressed. First it was this behavior where, when MySQL databases are on the SAN, the first few tables that anything tries to hit after the system boots come up as nonexistent and MySQL has to be restarted before it realizes they're actually there. Then today, on multiple systems (including the primary SVN repository, ever-so-wonderfully) we get SAN mounts spewing IO errors and the filesystems going into read-only, which is the kind of behavior I expect from directly mounted naked disks, not fault-tolerant managed storage. Right now, I'm at the point where if I were putting together a project and somebody said "hey we should use SANs", my response would be "GTFO". So basically I want to know whether my experience is typical or even common, or whether I'm having some kind of freakishly bad luck with SANs. The systems these SANs are attached to are all CentOS machines, if that's relevant.

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• Disk space consumed

  - by aravind-zoniac

  I have a very serious problem here in one of my client server. The remote server is installed with REDHAT ES 5.2 and we have a postgresql as database. I was trying to clone the database. The hard drive had 32 GB of free space before taking clone. I started cloning the database and during the process, there was some internet issue and due to this, putty got disconnected before taking clone. So I opened another fresh session and I was able to see only 2.5GB as available space. Also I was not able to see the clone in the psql terminal. Any solution to get the 29GB that was consumed????

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• Ulimit settings in Oracle 11g on Linux 5

  - by Stuart

  Is there an issue with "Ulimit -Hn" being set too low (at 1024) when (Oracle recommend 65536)? This is for Oracle 64-bit 11g on Linux 5. It is one of the settings that appears to be woefully short of its recommendation. But I am also aware that the database server in question is an Oracle Data Guard Local Standby and should only really have a connection or two from its Primary database server (to ship the redo logs across). The Local Standby database server has 'hung' about 3 times in as many months and then requires a reboot. I do not have access to this server, so rely on others to look at logs etc. The sanity check on kernel params uncovered the low value for "ulimit -Hn". Has anyone ever seen that 'low' value cause a hang or crash?

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• The Koyal Group Info Mag News¦Charged building material could make the renewable grid a reality

  - by Chyler Tilton

  What if your cell phone didn’t come with a battery? Imagine, instead, if the material from which your phone was built was a battery. The promise of strong load-bearing materials that can also work as batteries represents something of a holy grail for engineers. And in a letter published online in Nano Letters last week, a team of researchers from Vanderbilt University describes what it says is a breakthrough in turning that dream into an electrocharged reality. The researchers etched nanopores into silicon layers, which were infused with a polyethylene oxide-ionic liquid composite and coated with an atomically thin layer of carbon. In doing so, they created small but strong supercapacitor battery systems, which stored electricity in a solid electrolyte, instead of using corrosive chemical liquids found in traditional batteries. These supercapacitors could store and release about 98 percent of the energy that was used to charge them, and they held onto their charges even as they were squashed and stretched at pressures up to 44 pounds per square inch. Small pieces of them were even strong enough to hang a laptop from—a big, fat Dell, no less. Although the supercapacitors resemble small charcoal wafers, they could theoretically be molded into just about any shape, including a cell phone’s casing or the chassis of a sedan. They could also be charged—and evacuated of their charge—in less time than is the case for traditional batteries. “We’ve demonstrated, for the first time, the simple proof-of-concept that this can be done,” says Cary Pint, an assistant professor in the university’s mechanical engineering department and one of the authors of the new paper. “Now we can extend this to all kinds of different materials systems to make practical composites with materials specifically tailored to a host of different types of applications. We see this as being just the tip of a very massive iceberg.” Pint says potential applications for such materials would go well beyond “neat tech gadgets,” eventually becoming a “transformational technology” in everything from rocket ships to sedans to home building materials. “These types of systems could range in size from electric powered aircraft all the way down to little tiny flying robots, where adding an extra on-board battery inhibits the potential capability of the system,” Pint says. And they could help the world shift to the intermittencies of renewable energy power grids, where powerful batteries are needed to help keep the lights on when the sun is down or when the wind is not blowing. “Using the materials that make up a home as the native platform for energy storage to complement intermittent resources could also open the door to improve the prospects for solar energy on the U.S. grid,” Pint says. “I personally believe that these types of multifunctional materials are critical to a sustainable electric grid system that integrates solar energy as a key power source.”

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• Suggestions for sharing and using data between Ubuntu and Windows 7 dual boot

  - by wizjany

  Note: TL;DR, scroll to bottom for summary. I recently set up my computer for a dual boot between Ubuntu 9.10 and Windows 7. My current drive setup is as follows. | A1 | A2 | | B1 | B2 | B3 | A1: 100 mb, windows 7 "System Reserved" boot partition A2: 230 gb, data section, this one needs to be shared between the operating systems B1: 125 gb, windows 7 OS B2: 123 gb, ubuntu OS B3: 2gb, linux swap space Pretty much i want to have my documents, music, pictures, videos, etc accessible from both operating systems. My first attempt involved making the data (a2) partition NTFS, and moving my home folder from ubuntu to the data partition. However, as I read NTFS does not work nice with permission, and it messed up my home folder. My next idea is one of the following: 1) format the data partition to ext2/3/4 and move my home folder from linux there, and get a driver to read ext partitions in windows 7. The problem with that is that most of the ext drivers/software are not compatible with windows 7 or do not integrate with windows explorer (I really don't want to open a separate software window just to access my data, plus it's probably not compatible with other software.) http://www.fs-driver.org/ looks promising, but I'm not sure how it works with ext4 and windows 7 (not officially supported, when trying in vista compatibility mode, it tells me I need to format the ext drive to use it). My next idea, 2) keep the home folder in ubuntu where it is, but create symlinks for the Documents, Music, etc folders to an NTFS formatted Data (A2) partition, and add those locations to the windows 7 libraries. I'm not totally sure how the permissions would work out, but it should be fine since it's only the documents, music, etc and not the important config files in the rest of /home/user/. Correct me if I'm wrong. Currently, symlinks is my best idea, although i'm not sure how it will work. Any suggestions, additions to my ideas, links, pointers, whatever would be greatly appreciated. Even if it means i should reformat both my drives and repartition (2 250gb drives if you want to suggest a setup for that), I won't be too opposed if that's the best suggestion (I've gone through the format/install/format/reinstall process 5 times over the past 3 days, once more won't hurt me). TL;DR, summary: I have two hard drives. One is partitioned for Ubuntu and Windows 7, the second one I want accessible to both operating systems to store documents, music, pictures, videos, etc. Suggestions on how to set up the data drive please =) P.S. bonus if I can get an apache server document root folder working between the two OS's as well (permissions could become very complicated, so don't worry too much about that) P.P.S. Related question, but data viewing is one way: http://superuser.com/questions/84586/partition-scheme-and-size-for-dual-boot-windows-7-and-ubuntu-9-10-with-separate-p

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• Open source alternative for Canonical Landscape? [on hold]

  - by netvope

  From Canonical: Landscape is an easy-to-use systems management and monitoring service that enables you to manage multiple Ubuntu machines as easily as one through a simple Web-based interface. However, Landscape is not free. The RedHat counterpart Satellite has a free version called Spacewalk, but it doesn't work on Ubuntu. (There is an attempt to port Spacewalk to Debian, but it doesn't look like it's stable yet.) Are there any open source alternative to Landscape? Better yet, are there any Spacewalk-like software that works for both RedHat-based and Debian-based systems?

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• Can the NVIDIA ION chipset handle streaming and gaming reasonable well?

  - by true_gritt

  I'm considering getting a small-footprint "nettop" computer to use as a home theater PC with my Samsung LN40A550 HDTV. I've been looking at systems like the AS Rock ION HT330, the Acer AspireRevo 3610, or the Asus EeeBox PC EB1501. These are all systems with NVIDIA ION chipset (Intel Atom N330 dual core CPU + NVIDIA GeForce 9400 GPU). Is the NVIDIA ION chipset powerful enough to support media streaming at HD resolutions (e.g. via Boxee, Hulu, Netflix) and casual gaming (e.g. World of Warcraft, Madden NFL) reasonably well without herky-jerky video output?

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• Error in Installing MediaWiki for Ubuntu, Posgres 8.3

  - by Masi

  How can you solve the error message at the last line? .... # Installing MediaWiki with php file extensions # Environment checked. You can install MediaWiki. # Generating configuration file... # Database type: PostgreSQL # Loading class: DatabasePostgres # Attempting to connect to database "wikidb" as "wikiuser"... error: No database connection # Checking the version of Postgres... Warning: pg_version(): supplied argument is not a valid PostgreSQL link resource in /var/www/wiki/includes/db/DatabasePostgres.php on line 1078 FAILED. Required version is 8.1. You have 7.3 or earlier I am using Postgres 8.3 which makes the error message strange. The file "LocalSettings.php" was not created to the directory config so I cannot continue the installation without solving the problem.

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• Is this a bug in Profiler or Entity Framework?

  - by AjarnMark

  Using Entity Framework 4 with stored procedures and SQL Server 2008 SP1... When running SQL Server Profiler (TSQL_SPs template), the lines that show my stored procedure call and its statements say that they executed in DatabaseID = 1 (Master) but it is actually happening in my application database (ID = 8). The procedures execute properly and return the data, and they only exist in my application database, so why does Profiler mark those lines as being in Master? Is this a bug in Profiler? Is it a bug in EF4? Note that running the same code against a SQL 2000 instance, Profiler correctly shows the application's database ID.

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• Unmounting a zfs pool while it is shared with sharenfs

  - by Ted W.

  I have a Solaris (open indiana) system which is getting poor disk write performance. In order to enable ZIL in this version of zfs I need to add a line to /etc/system. This will not take affect until I've unmounted and remounted the zpool. The trick is that this spool is shared via nfs to about 200 other servers to host users' home directories. I can guarantee that no users will be accessing the disks during this period of maintenance but I would like to avoid having to issue an unmount for 200 systems in order to unmount the disk on the Solaris box. My question is, with sharenfs, is it necessary to have all systems disconnected before unmounting the filesystem on the host? If it's possible, how do you go about it? I've tried unmounting already, the normal way, and it reports the disk is busy. There is no lsof in Solaris and pfiles (I think that's what it was) does not show anything obviously using the mounts.

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• Oracle licensing /pricing ?

  - by Quandary

  Question: I'd like to download Oracle 11g database for evaluation purposes. Now I found this link for downloads: http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html But it says one must register 'for accessing premium contents'. But in the same time, it looks like one can download the full database for free. But surely, Oracle doesn't give it for free, but in the registration, there's no mention of any cost/fees, or any billing address. Is this registration free, or as 'premium' suggests, will you get a bill for it if you do (supposed you enter true data) ? Or how does Oracle handle licensing/payment ? I can not see any price tag there anywhere, nor any information on it on that registration page.

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• Script / command to drop all connections / locks in Sybase SQL Anywhere 9?

  - by nxzr

  I've recently become responsible for administering an application which is essentially a front end to a Sybase SQL Anywhere 9 database, including the database itself. I'd like to use unload table to efficiently export the data for backup and, in the case of a few tables, ETL to get it into a reporting database / small scale data warehouse. The problem is that the client application crashes and leaves dead connections and shared locks on a pretty regular basis, which seems to prevent unload table from getting the (brief) exclusive locks it needs. Currently I use Sybase Central to verify that these connections are in fact zombies and drop them myself at the end of the day / week. Is there a command or script to drop all connections? Being able to drop everything at once after verifying that they're unneeded would be quite helpful but I haven't found a way to do it.

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• Joining computers from workgroup to active directory

  - by George R

  I have several computers at my office that I want to put on our domain. These computers currently are used by employees with local computer accounts and they have information stored under these accounts. When I join their computer to the domain how would or could I keep their current computer accounts and add them to the Active Directory so they could log in as usual access the network resources? Is this possible or do I need to just start from scratch on all this with their accounts and locally stored files? We are using Windows 2008 R2 and all systems being added have the Windows 7 pro or higher. All I want to really do is add the systems to the domain and have their accounts in the Active Directory so they can log in, access files which are already on their computer, and use network reosoures. If I can add their computer and then add same username and password to Active Directory to get this all to work that would be fine. I am just looking for minimal impact on the user really to get this done.

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• Looking for a software solution which acts like a hardware KVM

  - by Daisetsu

  I've seen programs like Synergy before which allow a keyboard and mouse to be used across multiple systems. Unfortunately Synergy treats both systems like they are the same thing (when you move the mouse too far to the right it jumps to the other computer, along with keyboard input). I only have 1 monitor so what I need to do here is have a quick way to view my other desktop that is easy to manage. Remote desktop is difficult because you have to take it out of fullscreen, then minimize it and then re-maximize it when you want to use it again. If there were a single button I could hit to switch to the other computer that would be optimal. Both computers are on the same lan.

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• SQLServer 2008 FailOver and Load Balancing

  - by Jedi Master Spooky

  I have a project with a 2TB database ( 450.000.000 rows). I need to provide to the proyect a solution that gives FailOver and load Balacing, what do you recommend? We are going to use a NetApp Filer for the Data Files and for the File System of the Proyect. I read that SQl Clustering does not provide load balacing. If I cannnot have this feature and I have to go only to the FailOver what Server ( I presume that the key feature here is memory) would you recomend. We are adding 1.000.000 rows a day. Once the rows is inserted we are doing a lot of updates to that row for about 1 week then the row get static. Because of this I am thinking in some kind of history table or database or something like that. I am open to the Os servers implementation, I was thinking of a windows 2008 server with cluster but this depend of the database solution

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• Automatically reconnect to ODBC sources?

  - by stefan.at.wpf

  I am using Asterisk 1.8.10.1 and a MySQL database connected via ODBC to store CDRs. When my MySQL database isn't available when Asterisk starts or has an outage while Asterisk is running, I would expect Asterisk to retry to connect to the database, but this doesn't happen! Anyone knows where I can enable some kidn of automatic reconnect to databases in Asterisk? My res_odbc.conf looks like this: [asterisk] enabled => yes dsn => asterisk-connector username => user password => pass pre-connect => yes pooling => no limit => 1 idlecheck => 1 negative_connection_cache => 1

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• SQL Server User Mapping - Limit view of databases for a user

  - by Jaime

  Hi there, I am adding a new Login with SQL Server Authentication. I set its Server Role as public and then went into User Mapping, selecting the only database this user should have access to. I then change the Default Schema to dbo and made this user the db_owner. I then connect to the instance using the new user's credentials and I can see not only the database he should have access to but all the other attached databases. How can I limit this user to just see the database he has access to? Thanks in advance!

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• Getting out of the Helpdesk. Getting into the system administration.

  - by eric.s

  Today I found out that the job which would have been a promotion for me went to an outside candidate. The position is for a systems admin on our LAN team. I have been working on the helpdesk here for almost two years with another two years experience working it prior. While we are the first tier support we also work in AD, monitor and update certain servers and set up and deploy Windows/Mac images for those we support. What I am looking for here is what can I do to better myself to inside/outside places to move up this ladder? I take what I can from my job - working on projects that I can learn from - but what projects should I be volunteering for? What can I do for myself outside to make me a more viable candidate for a systems admin?

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• Can Resource Governor for SQL Server 2008 be scripted?

  - by blueberryfields

  I'm looking for a method to, in real-time, automatically, adjust Resource Governor settings. Here's an example: Imagine that I have 10 applications, each hitting a different database on the same database machine. For normal operations, they do not hit the database very hard, so I might want each one to have 10% CPU power reserved. Occasionally, though, one or two of them might spike, and run an operation which could really use the extra power to run faster. I'd like to be able to adjust to compensate (say, reducing the non-spiking apps to 3%, and splitting the difference between the spiking apps). This is a kind of poor man's method of trying to dynamically adjust resource allocation and priorities. Scripts (or something script-like) is preferred, since the requirement is for meta-level adjustments to be possible in real-time, also.

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• How should I isolate computers with different roles on a network

  - by fishhead

  I work in an industrial plant and we have one network(physical wire) that us used for both office usage and for process systems. The office computers are only used for typical office needs but occasionally do connect to the process computers to obtain information from a sql server or for some other purpose. A new initiative is in the works and is rolling down hill from corporate and that is to standardize how the the computers are used at work and they would be severely locked down and only a standard set of applications will be allowed to execute. one of the requirements is to also have non office computers isolated from the company domain. our non-office computers are a mix of Man-Machine interfaces and sql-servers all running software that non standard. My question is, how can we divorce the control systems computers from the company domain but still have access to the servers from the company domain. thanks

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• How should I isolate computers with different roles on a network

  - by fishhead

  I work in an industrial plant and we have one network(physical wire) that us used for both office usage and for process systems. The office computers are only used for typical office needs but occasionally do connect to the process computers to obtain information from a sql server or for some other purpose. A new initiative is in the works and is rolling down hill from corporate and that is to standardize how the the computers are used at work and they would be severely locked down and only a standard set of applications will be allowed to execute. one of the requirements is to also have non office computers isolated from the company domain. our non-office computers are a mix of Man-Machine interfaces and sql-servers all running software that non standard. My question is, how can we divorce the control systems computers from the company domain but still have access to the servers from the company domain. thanks

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• Linux Bridge, Samba netbios name/hostname access

  - by Christopher Wilson

  I am currently running a linux bridge in the following configuration ADSL Modem: 192.168.1.1 Linux Bridge: eth0: 192.168.1.2 eth1: no address Wireless Router: 192.168.0.1 My issue is that i cannot access the "Linux Bridge" shares using the WINS name of the server via client systems (yes i understand it is a transparent bridge but i can access it via the 192.168.1.2 address this is not on the same subnet as the client systems). This is the global section of my SMB.CONF [global] unix extensions = off os level = 20 netbios name = server guest account = nobody server string = 447 Server security = share #unix extensions = no #wins support = yes #wins server = 192.168.0.1 name resolve order = wins lmhosts hosts bcast interfaces bridge1 eth0 eth1 lo bind interfaces only = yes Can i access a bridged server using it's WINS name to access samba shares? Cheers Chris

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• SQL Server 2000 + ASP.NET: Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'

  - by Rick

  I just migrated a development workstation FROM: Windows XP Pro SP3 with IIS 6 TO: Vista Enterprise 64bit with IIS 7 Since the move, one of my pages that accesses an SQL Server 2000 database is receiving the following error from my ASP.NET 2.0 web page: "Login failed for user 'NT AUTHORITY\ANONYMOUS LOGON'." I have: enabled Windows Authentication in IIS and web.config disabled Anonymous Authentication in IIS set up Impersonation to run as the authenticated user verified that the logged in user (in this case, me) has access to the appropriate database on the SQL Server verified that my login and impersonation information is correct in the ASP.NET page by checking User.Identity.Name and System.Security.Principal.WindowsIdentity.GetCurrent().Name (both display my username) My connection string using SqlConnection is "Server={SERVER_NAME};Database={DB_NAME};Integrated Security=SSPI;Trusted_Connection=True;" Why is it trying to login with NT AUTHORITY\ANONYMOUS LOGIN? I have to assume it's some setting or web.config entry specific to IIS7 since it worked fine before the migration. NOTE: The SQL Server is Windows authentication only - no mixed mode or SQL only.

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