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• Linux stretch cluster: MD replication, DRBD or Veritas?

  - by PieterB

  For the moment there's a lot of choices for setting up a Linux cluster. For cluster manager: you can use Red Hat Cluster manager, Pacemaker or Veritas Cluster Server. The first one has the most momentum, the second one comes by default with RH subscriptions and the last one is very expensive and has a very good reputation ;-) For storage: - You can replicate LUN's using software raid / md device - You can use the network using DRBD replication, which offers a bit more flexibility - You can use Veritas Storage Foundation technology to talk to your SANs replication technology. Anyone has any recommandations or experience with these technologies?

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• OS X Can't Access Netatalk Shares

  - by Rogger Matamoros

  In my home network, I have a server running Ubuntu 10.4, configured to share files to my MacBook Pro running Snow Leopard (10.6.8) with Netatalk and Avahi. It was working like a charm until one day it stopped working. I can see my server in Finder, I can enter a username and password, and it seems to accept it all, but Finder gets stuck "Connecting" until it times out. I've checked the afpd.conf and AppleVolumes.default. They are all intact. My guess is that an update broke something, but I don't know how to troubleshoot it further. Any suggestions?

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• Working WCF WebServices with NLB server

  - by gguth

  Im starting the architecture of a new project using WCF, but im not the right person to make some network considerations, so im doing some research but cannot find the answers to these questions: We´ll host the WCF service in a common Windows Service app in 2 servers and we´ll have another server to make the Load-Balancing job using the WNLB. The fact that we are hosting the WCF in a Windows Service app can disturb the NLB job? Before my research i thought the load balancing was tought to configure, but with NLB it seems to be very simple, its really that simple? Note: The binding will be basicHttpBinding

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• traffic shaping for certain (local) users

  - by JMW

  Hello, i'm using ubuntu 10.10 i've a local backup user called "backup". :) i would like to give this user just a bandwidth of 1Mbit. No matter which software wants to connect to the network. this solution doesn't work: iptables -t mangle -A OUTPUT -p tcp -m owner --uid-owner 1001 -j MARK --set-mark 12 iptables -t mangle -A POSTROUTING -p tcp -m owner --uid-owner 1001 -j MARK --set-mark 12 tc qdisc del dev eth0 root tc qdisc add dev eth0 root handle 2 htb default 1 tc filter add dev eth0 parent 2: protocol ip pref 2 handle 50 fw classid 2:6 tc class add dev eth0 parent 2: classid 2:6 htb rate 10Kbit ceil 1Mbit tc qdisc show dev eth0 tc class show dev eth0 tc filter show dev eth0 does anyone know how to do it? thanks a lot in advance

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• How to move from a physical server to an online server?

  - by Tiago

  My father has a small company: 10 PCs running Windows, 1 running Windows Server 2000 and 1 Fax/Printer. I want to remove the server and make the network based on an Online server. Can I do that? If yes, how? By using a Windows VPS? Linux VPS with VMWaRE? I'm not sure if that's a viable option, if there's other, please tell me. thank you.

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• Make own dial-up ISP using broadband connection [on hold]

  - by SkylarMT

  So, I see no reason why this wouldn't be possible. I have a Linux server (a Raspberry Pi to be exact) connected via Ethernet to a broadband ISP. I want to be able to dial a number, have it go through the normal telephone network, onto the Internet via a VoIP provider (I know you can call a Skype user from a landline), to my Raspberry Pi, and then have the Pi connect me to the Internet. I've found guides on making your own ISP, but they all involve a dedicated phone line on the server end. Is there a way to do this with no modem on the server end? I live in an area with a lot of people still on dialup, and if I pull this off I could make some extra money. Thanks!

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• High availability for Windows Service under Windows Server 2003

  - by empi

  Hi. I have a following situation: I need to deploy a windows service that listens for incoming request on tcp port (basically WCF service). I have a High Availability requirement - the service must be deployed on two servers and if the service stops (only the service, not the whole server) on one server, all the requests must be redirected to the second one. For me it looks like a basic failover scenario. How can I achieve this on Windows Server 2003? Should I use Microsoft Cluster Service or Network Load Balancing? The important part is that the process of swapping the servers should not concern the clients (the client must see only single address / single host or domain name). Thanks in advance for help.

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• What is the most suitable way to manage iSCSI storage for Virtual Environments?

  - by Gabriel Talavera

  We are planning to place a HP MSA P2000 with two FC/iSCSI controllers in our network. We have two options to provide more storage to Virtual Machines (We are running Hyper-V): A) Add iSCSI targets to the Virtual Hosts and then create VHD that we would add to each guest server. B) Directly add iSCSI targets in each guest server. Just wondering if one of those options is better than the other, and which is the common practice in a virtualized environment. Thanks in advance for any input!

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• Task Scheduler : Logon as Batch Job Rights

  - by Brohan

  I'm trying to set up a scheduled task which will work under the Network Administrators account, whether the account is logged in or not (on a specificed computer) According to the Task Scheduler, I need 'Logon as batch job rights'. Attempting to change this setting in the Local Security Policy window has it the option to add the Administrator account to the groups greyed out. Currently, only LOCAL_SERVICE may Logon as Batch job. Attempting to add administrator to this group hasn't worked. How do I make it able to set this permission so that I can run tasks if I'm logged in or not?

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• How to Enable User-Specific Wireless Networks in Windows 7

  - by The Geek

  Wireless network settings in Windows 7 are global across all users, but there’s a little-known option that lets you switch them to per-user, so each user has access to only the networks they are allowed to connect to. Here’s how it all works. How is this useful? Maybe you want to prevent a particular user from accessing the internet—if you don’t give them the wireless password, they won’t be able to get online. This could be very useful if you’ve got mini-people playing games on the family PC, but you don’t want them getting online Latest Features How-To Geek ETC How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware The Citroen GT – An Awesome Video Game Car Brought to Life [Video] Final Man vs. Machine Round of Jeopardy Unfolds; Watson Dominates Give Chromium-Based Browser Desktop Notifications a Native System Look in Ubuntu Chrome Time Track Is a Simple Task Time Tracker Google Sky Map Turns Your Android Phone into a Digital Telescope Walking Through a Seaside Village Wallpaper

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• CheckPoint VPN-1 SecureClient inability to navigate behind a Linksys WAG300N

  - by user46819

  I have a Linksys WAG300N, I'm accessing my LAN with Wifi and everything works fine on my Windows 7 Enterprise laptop. When I try to connect to my company's VPN the connection succeeds, but I cannot access any internet site either within my work network or public site like Yahoo or Google. In my Linksys control panel I already verified all types of VPNs are enable to passthrough. Normal IPSec and Windows VPN worked in the past without any problems. CheckPoint seems to have a solution, but I do not have the ability to change the IP in my client and of course using another NAT device in between is not a solution for me. Edit: adding link to the Checkpoint solution, https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk26189

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• Top Ten Reasons to Attend the 2015 Oracle Value Chain Summit

  - by Terri Hiskey

  Need justification to attend the 2015 Oracle Value Chain Summit? Check out these Top Ten Reasons you should register now for this event: 1. Get Results: 60% higher profits. 65% better earnings per share. 2-3x greater return on assets. Find out how leading organizations achieved these results when they transformed their supply chains. 2. Hear from the Experts: Listen to case studies from leading companies, and speak with top partners who have championed change. 3. Design Your Own Conference: Choose from more than 150 sessions offering deep dives on every aspect of supply chain management: Cross Value Chain, Maintenance, Manufacturing, Procurement, Product Value Chain, Value Chain Execution, and Value Chain Planning. 4. Get Inspired from Those Who Dare: Among the luminaries delivering keynote sessions are former SF 49ers quarterback Steve Young and Andrew Winston, co-author of one of the top-selling green business books, Green to Gold. 5. Expand Your Network: With 1500+ attendees, this summit is a networking bonanza. No other event gathers as many of the best and brightest professionals across industries, including tech experts and customers from the Oracle community. 6. Improve Your Skills: Enhance your expertise by joining NEW hands-on training sessions. 7. Perform a Road-Test: Try the latest IT solutions that generate operational excellence, manage risk, streamline production, improve the customer experience, and impact the bottom line. 8. Join Similar Birds-of-a-Feather: Engage industry peers with similar interests, or shared supply chain communities, in expanded roundtable discussions. 9. Gain Unique Insight: Speak directly with the product experts responsible for Oracle’s Value Chain Solutions. 10. Save $400: Take advantage of the Super Saver rate by registering before September 26, 2014.

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• How to configure my hosting provider for email when DNS redirection already in place?

  - by Johann

  First of all I apologize for my poor understanding of network and I hope I used the correct terminology for everything: I have bought a domain name with 1&1 to create an online shop, using kingeshop. I followed the steps explains here to point the domain name to kingeshop IP address and everything is working fine. Now I would also like to use my domain name to create an email account. But 1&1 seems to say they're not responsible for this now the DNS is transfered to kingeshop's. What I'm wondering is who is really "in charge" of my domain name now? 1&1 also lets me configure the MX-record but I don't have a clue what I can do with this. Could I just use an existing gmail address somehow? Thanks a lot for any help or clarity you can bring me on that matter!

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• Mercurial mirror: abort: No such file or directory: http://[...]/00manifest.i

  - by Sridhar Ratnakumar

  I am trying to setup a daily mirror of a mercurial repository - code.python.org in particular - within our local network, and serve that via Apache HTTPD. On the remote host that hosts apache, I did this: $ cd /var/www $ hg clone http://code.python.org/hg/trunk/ On my macbook, I ran: $ hg -v clone http://remote/trunk/ (falling back to static-http) abort: No such file or directory: http://remote/trunk/.hg/store/00manifest.i Google does not show any relevant result for this particular error. I remember back in those days being able to setup Bazaar mirrors by a simple clone. Doesn't Mercurial work like that? How do I setup a mirror that must further act like a clone URL?

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• Tools to monitor guest OS performance in vSphere

  - by Quick Joe Smith

  I am looking for some tool or way to retrieve performance data from guest VMs running under vSphere 4.1. I am currently interested in the 4 basic metrics: CPU(%), Memory(%), Disk availability(%) & Network utilisation(Kb/s). The issue I have is that all of vSphere's performance data is from a ESXi host perspective (active, shared, consumed, overhead, swapped etc.) which is far removed from the data from the VM's own perspective. For instance, I have a Windows server VM idling, using around 410MB (~25% of its allocated 2GB) as reported by Task Manager, and this is the value I'm after. vSphere's metrics seem unable to arrive at this figure by any reliable and repeatable means. Is anyone aware of tools that can obtain this kind of data? The simpler, the better.

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• hardware addressing and configurable addressing scheme

  - by Zia ur Rahman

  basically i want to ask question about configurable addressing scheme for LAN interface hardware. i have read about it from a book, some main points are given by a configurable addressing scheme provides a mechanism that a customer can use to set a physical address.The mechanism can be manual (the switches that must be set when the interface is first installed).or an electronic memory such as an EPROM that can be downloded from the computer(what does this means). Most hardware needs to be configured only once- configuration is usually done when the hardware is first installed. Question:Suppose a network administrator configures the LAN interface hardware (assigns the address) when he installs it. Now later on if he needs to change the physical address of the device can he change it? Or in this addressing scheme the hardware can only be configured once and we can not reconfigure it later on.

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• LAMP Server: (104) Connection reset by peer

  - by StephenM

  A user reported the following problem when attempting to visit www.airlinemogul.com. The requested URL could not be retrieved While trying to retrieve the URL: http://www.airlinemogul.com/airlinemogul/index.php The following error was encountered: * Read Error The system returned: (104) Connection reset by peer An error condition occurred while reading data from the network. Please retry your request. There are no other issues reported by any other users, so it may be an isolated issue. Could anyone give me any suggestions as to how I could investigate the problem further or find a solution? Thanks.

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• RAID Read/Write Speed Gradually Slows

  - by Nalandial

  This is actually a server at home, but I felt it was sufficiently complicated as to not have it on SuperUser and could easily apply to a professional situation. I have a file server running Debian (Lenny 5.0.4), and it has an XFS LVM on top of a RAID 5 with the OS drive separate from the RAID. It's also running apache, samba, and postgresql. Side note: before anyone asks, I'm using RAID5 because I get more bang for the buck on raw drive space, and still have some fault tolerance. When the box is started (via shutdown or reboot) reading/writing to it's samba share maxes out the gigabit network connection. Over time, this slowly degrades eventually becoming < 10MB/s; however, when rebooted the speed returns to maxing out the connection. Why is this happening, and is there a way to 'clear' out whatever's causing it without taking the server down? Thanks in advance!

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• How to fetch a cpu status thought net-snmp

  - by Steve.DC.Tang

  I want to fetch a device's cpu and memory status thought net-snmp. I get my device's info with this command: snmpwalk -v 2c -c public 210.38.xxx.xxx system And I got this info: SNMPv2-MIB::sysDescr.0 = STRING: Ruijie High-density IPv6 10G Core Routing Switch(S8606) By Ruijie Network SNMPv2-MIB::sysObjectID.0 = OID: SNMPv2-SMI::enterprises.4881.1.1.10.1.43 DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1978814424) 229 days, 0:42:24.24 SNMPv2-MIB::sysContact.0 = STRING: SNMPv2-MIB::sysName.0 = STRING: S8606 SNMPv2-MIB::sysLocation.0 = STRING: SNMPv2-MIB::sysServices.0 = INTEGER: 7 Now I want to fetch the cpu status, and I search my question on Google, somebody offer a oid for query the cpu status: snmpwalk -v 2c -c public 210.38.xxx.xxx usageOfCPU But it doesn't worked : No log handling enabled - using stderr logging usageOfCPU: Unknown Object Identifier (Sub-id not found: (top) - usageOfCPU) Somebody told me some switch has its private MIB, and you can use it to see its CPU status, is that right? I hope someone can solve me question......

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• squid configuration change to accept http request on LAN

  - by Ratan Kumar

  installed squid + dansguardian to block adult content on my linux (ubuntu 12.10) . everything worked fine. it has blocked as expected . now the problem is i am also running an apache server for my LAN . ( kind of website ) but when accessing it via 192.168.0.1 , it says squid has blocked the connection , this is the exact error The following error was encountered while trying to retrieve the URL: http: //192.168.0.16/ Connection to 192.168.0.16 failed. The system returned: (113) No route to host The remote host or network may be down. Please try the request again. Your cache administrator is webmaster. before configuring the squid it was working fine . what changes in the squid.conf i have to make . i tried acl Safe_ports 80 allow_all Safe_ports ( i want to know how i can configure it again to listen HTTP request from LAN )

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• Sendind an internet radio singal from my hifi to a portable

  - by Paul

  I'm just about to set myself up with a wireless network in my house. This is so that I can intregate an internet radio into my hifi system. What I would love to do is to listen to the radio in another room of the house. I also have a little portable radio/cd player that has a USB port on the front. Is there something I could buy which would allow me to listen to the radio through my portable in another room? I do realize that I could solve this problem by buying some wireless portable speakers, however I just wondered if anybody knew another way i.e. bluetooth or something similar?

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• What prevents Windows from entering standby?

  - by Arne

  Is there a tool or method to find out, what prevents Windows Vista 32 bit from entering the standby mode? My home pc is set to standby after a certain time of inactivity. But quite often it just stays awake and I have know idea why. I know of things that will keep it awake and already checked devices and network to no avail. I suspect there is some application or service that tells the os to stay active and I hope there is some tool to find the culprit.

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• ArchBeat Link-o-Rama for 101/10/2011

  - by Bob Rhubart

  All day, all architecture. Oracle Technology Network Architect Day - Phoenix, AZ - Dec 14. Free registration. Spend the day with your peers learning from Oracle experts in Cloud Computing, Engineered Systems, Oracle WebLogic, Oracle Coherence, Application-Driven Virtualization, and more. Registration is free, but seating is limited. Register now! Data Integration - Bad data is really the monster | Bikram Sinha "Bad data can cause huge operational failure and cost millions of dollars in terms of time and resources to clean up and validate data across multiple participating systems," says Bikram Sinha. Changing a navigation model on a page in WebCenter | Edwin Biemond Another illustrated how-to from Oracle ACE Edwin Biemond. Why do I need an Authenticator when I have an Identity Asserter? | Chris Johnson Chris Johnson responds to a user question. OOW: The Most Important Thing | Floyd Teter Oracle ACE Director Floyd Teter explains why he sees "the inclusion of Fusion Applications CRM and HCM in the Oracle Public Cloud" as the most important news to come out of Oracle OpenWorld 2011. Oracle Releases Oracle Solaris 11 | Gokhan Atil Atil offers an overview of some of the "key points" of the new Solaris 11 release. SOA Development Virtual Developer Day (On Demand) You won't get the hands-on experience available in the live event, but if you will learn learn how a SOA approach can be implemented, whether starting afresh with new services or reusing existing services. Webcast: Maximum Availability on Private Clouds - Nov 10 - 10am PT/ 1pm ET Featuring Margaret Hamburger (Director, Product Marketing, Oracle) and Joe Meeks (Director, Product Management, Oracle). Should Enterprise Architecture Teams Be More Focused on Innovation? | Richard Seroter Richard Seroter looks answers among opinions offered by Forrester analyst Brian Hopkins and Jude Umeh of CapGemini.

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• Fedora vs Ubuntu to host Subversion and Bugszilla over Apache

  - by Tone

  I'm not interested in a flame war of Ubuntu vs Fedora vs whatever. What I am interested in is whether or not I should move my current Ubuntu server to Fedora. I have been able to get Subversion setup and hosted via Apache over https and it works quite well (I'm a .NET guy so this was all new to me). I'm having trouble though with installing Bugszilla - have run into some issues getting all the perl scripts to run successfully so my questions are: 1) Will Bugszilla will install easier on Fedora? Can I just install a package instead of having to download the tar.gz file and untar it, run perl scripts, etc. 2) Is Fedora considered to be a better production server system? I have no desire for a GUI, just need it to host Subversion, Bugzilla over Apache2, and act as a file and print server for my home network.

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• Problems serving SVN over HTTPS on Ubuntu 10.04

  - by odd parity

  We've been experiencing some problems with our Subversion server after upgrading to Ubuntu 10.04. When trying to access a repository, regardless of client (I've tried git-svn and svn on Windows as well as svn on Ubuntu 10.04, from different computers and network locations), I get a 400 bad request. Here's the output from svn: svn: Server sent unexpected return value (400 Bad Request) in response to OPTIONS request for 'https://svn.example.org/svn/programs' Here are the relevant entries from the Apache logs (I'm running Apache 2.2): error.log [Mon Jun 14 11:29:31 2010] [error] [client x.x.x.x] request failed: error reading the headers ssl_access.log x.x.x.x - - [14/Jun/2010:11:29:28 +0200] "OPTIONS /svn/programs HTTP/1.1" 401 2643 "-" "SVN/1.6.6 (r40053) neon/0.29.0" x.x.x.x - - [14/Jun/2010:11:29:31 +0200] "ction-set/></D:options>OPTIONS /svn/programs HTTP/1.1" 400 644 "-" "SVN/1.6.6 (r40053) neon/0.29.0" If anyone has run into similar problems or could give me a pointer to track down the cause of this I'd be very grateful - I'd really like to avoid having to downgrade the box again.

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