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• Glusterfs : 'No route to host' for fstab mount in CentOS

  - by son_of_fire

  I am using glusterfs, and am using fstab in this way: <IPADDRESS>:/<VOLUMENAME> /some/mount/point glusterfs defaults,_netdev 0 0 but the logs for the mount continue to say the following. [<TIMESTAMP>] E [socket.c:2161:socket_connect_finish] 0-<VOLUMENAME>-client-1: connection to <IPADDRESS>:24007 failed (No route to host) I know this is not true, since when the system is up and running, I can easily issue a mount and the volume gets mounted. (I've done this by using rc.local) after reading more I have seen that using _netdev is preferred, and that if the host cannot be reached netfs will remount the volume after the network comes up, but that is not happening. (netfs is running). Is there a way to make the mount happen at a different time without using a script? (I would prefer to use fstab to manage the mounting even though I can use a script.)

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• Can I configure a DNS cache not to forward AAAA queries?

  - by itsadok

  I'm setting up an internal DNS cache because my firewall is having trouble handling all the sessions created by DNS requests. I tried using bind9, dnsmasq and DJB dnscache, they all help reduce the number of requests leaving my network, but there are still a lot of request being made. Looking at the log files, and tcpdump and dnstop outputs, it seems that requests that return SERVFAIL do not get cached at all. And a lot of those failed requests are AAAA requests, which is a shame, because I do not have ipv6 enabled on any server. I've looked at several ways to help the situation, and I think if I could somehow prevent AAAA record requests from being forwarded by the DNS cache, it would reduce the number of requests significantly. The closest thing I found was the filter-aaaa-on-v4 option in BIND9. However, this only removes the record from the server response, and does not prevent it from forwarding it. Any help would be appreciated.

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• rip in RouterSim

  - by Olga Anastasiadou

  I have to design a network given IPs 146.124.0.0/16 and 146.124.10.0/24. My given requirements are : at least 60 more subnets and maximum 1000 hosts per subnet and use of RIP. I have 3 routers (RA1, RA2, RA3) and 3 subnets (Sales, Logistic and Deposit). I gave WAN1 (RA1-RA3): 146.124.10.0/30, WAN2 (RA2-RA3) : 146.124.10.4/30 and WAN3 (RA1-RA2) : 146.124.10.8/30 and Sales : 146.124.0.0/22, Logistic: 146.124.4.0 and Deposit : 146.124.8.0. When I tried to configure RIP protocol, it didn’t work (I use routerSim 6). What am I doing wrong? Can anyone help please????

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• Connmand Equivalent

  - by CurtisS

  What's the connmand equivalent on Fedora 15? I'm trying to connect to the Internet with Fedora 15 but I'm having problems. It can't see my network connection and when I try to run nm-connection-editor I get: (nm-connection-editor:9816): WARNING: **get_all_cb: couldn't retrivew system settings properties ... (nm-connection-editor: 9816): WARNING **: fetch_connections_done: error fetching connections: (32) ... (nm-connection-editor: 9816): GVFS-RemoteVolumneMonitor-WARNING ** cannot connect to the session bus: (nm-connection-editor: 9816) GVFS-RemoteVolumeMonitor-WARNING **: cannot connect to the session bus ... g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOSStream returned 0 bytes onan async read (g-io-error-quark, 0). Exiting.

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• OpenDNS servers initial response is very slow

  - by Ben Collins

  I've got a Time Warner cable ISP package (RoadRunner), and the modem they gave me doesn't allow me to specify which DNS servers to use; it always uses whatever the upstream dhcp server gives it. I prefer to use OpenDNS on my home network, so i've configured a couple of my PCs manually in the Windows adapter settings for IPv4 such that their IP addresses are obtained via DHCP, but the DNS server settings are fixed to the OpenDNS server IPs. Now, when I startup Windows on these PCs, it always takes 2-3 minutes to start receiving responses from the DNS servers; any request before that times out. While not debilitating, this is quite annoying. Any ideas why this might be happening?

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• links for 2011-03-02

  - by Bob Rhubart

  Oracle Technology Network Architect Day: Denver Registration is now open. Sessions will cover IT Optimization and consolidation, cloud computing, the evolving role of enterprise IT, and more. (tags: oracle otn entarch event denver) SOA Suite Integration: Part 2: A basic BPEL process (The Shorten Spot) The latest post in Anthony's Shorten's series about SOA Suite integration with Oracle Utilities Application Framework. (tags: oracle otn soa bpel soasuite) ADF: How to create web service based ADF pages The first in promised series of three posts on the topic by Marianne Horsch. (tags: oracle soa webservices adf) David Butler: MDM Poised for Growth (Oracle Master Data Management) David says: "Businesses are talking about the need to fix master data before they can successfully move forward on SOA initiatives. And the growing demands for compliance continue to be a major driver." (tags: oracle otn mdm) Cloud governance is about more than security | The Pervasive Data Center - CNET News Legal and regulatory procedures, transparency, service levels, indemnification, and more are all part of a broader governance landscape that requires IT to work closely with business users. Read this blog post by Gordon Haff on The Pervasive Data Center. (tags: ping.fm) Senthilkumar Rajendran's Blog: Horizontal Scaling OBIEE 11g (tags: ping.fm) InfoQ: Searching Without Objectives Kenneth O. Stanley considers that innovation is stifled when we are strictly following a high goal, and we would progress more when we are inclined to discovery rather than following an objective. (tags: ping.fm) InfoQ: Brownfield Software - Industrial Waste or Business Fertilizer? Josh Graham addresses 10 myths related to working on legacy software, attempting to prove that one can make good use of legacy code without having to rewrite the entire thing. (tags: ping.fm)

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• test of ICMP block

  - by Marcos

  In my bash scripts I have been using something like: until fping -u google.com; do echo "$0[$$] Network/DNS down?? $(date)" 1>&2 && sleep $(($RANDOM%(1 + ++trynum * 1) +1)).222; done to test for online connectivity. It halts in place, sleeping growing random intervals, until it can ping google.com again. Problem: At some sites ICMP pings are blocked altogether, and web pages are still reachable. What's a short way to test for this general case? Based on that test I will switch over to an http-based test like the exit status of curl -s google.com >/dev/null if that is a good one.

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• Does using a single cable to connect two switches create a bottleneck?

  - by Nick

  I realise this may be a stupid question for some, but it's something I've always wondered about. Let's say we have two gigabit switches and all of the devices on the network are also gigabit. If 10 computers connected to switch A need to transfer large amounts of data to a server on Switch B (at the same time), is the maximum transfer speed of each connection limited by the bandwidth of the connection between the two switches? In other words, would each computer only be able to transfer at a speed of one gigabit divided by the 10 machines trying to use the "bridge" between switches? If so, are there any workarounds so that every device can use it's maximum speed from point to point?

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• How to setup a simple self-hosted dynamic DNS server

  - by Cerin

  I have a small internal network of physical machines running hypervisors, which in turn run several KVM Ubuntu virtual machines. How would I setup an internal dynamic DNS server so that when I run a script to create a new virtual machine, that VM could automatically register itself in the DNS server? Bind seems to be the standard DNS server for Linux, but it seems designed for a much more "static" DNS model. Dynamically updating this would require a complicated script that would have to SSH into the DNS server, edit configuration files, and then restart the server. This doesn't seem like a very elegant solution. Are there better options? I saw a similar question, although they're asking for a solution for a public setting on Amazon. My servers are entirely private, and I don't want to rely on an external VM host or Dynamic DNS provider.

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• pxelinux hanging when booting client machine

  - by Blasphemophagher

  I'm kind of new to all of this, so please forgive any vagueness/misunderstandings on my part. I'm using pxelinux and VMs to create CentOS 6.0 machines that have the same install every time. I have a new VM set to boot from network, but in the process of booting up it gets stuck at "Loading 10.1.1.20:/pxelinux.0" (10.1.1.20 is the address of the server it's getting info from). pxelinux conf: http://pastebin.com/4XfZZPY1 I'm pretty sure all my config files are correct, could it be VirtualBox related? I have both the building server and the new client set to Host-only adapter and PCNET-FAST.

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• My website is infected with JS:ScriptIP-inf [Trj]

  - by Rizwan Aaqil

  I am using Network Solutions hosting. I was recently attacked with JS:Illredir-S [Trj], I asked my hosting providers to clean it and they cleaned it and updated all passwords, but now after a week my site got infected again with JS:ScriptIP-inf [Trj]. Can anyone please suggest me how to secure my website properly ? Should I change my hosting provider ? I am fed up of these viruses again and again on my websites. I can't even find this virus in my files. Please post informative answers. Thanks

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• What is the best way to clone Win7 machines?

  - by John Hoge

  I'm looking to buy 5 new Win7 boxes and would like to ease deployment by cloning the OS. What I would like to do is install a fresh OS (Dell doesn't seem to sell machines without preinstalled crapware anymore) and then install a few apps on the first one. Once it is just right, I want to clone the OS and install the image on the other four machines and just change the machine name. Is this possible to do without any extra third party software? What I am thinking of doing is backing up the disk image of the first machine to a network share, and then booting the others to the windows install DVD and restoring the same image on each machine. Has anyone had any luck with this technique?

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• How to become an Oracle SOA expert?

  - by Jürgen Kress

  Our SOA business continues to grow – more and more open SOA jobs are posted – you want to participate and become and Oracle SOA expert? Follow the five steps to your SOA success: Joint the Oracle SOA Partner Community: You will receive our monthly newsletter with all the training, marketing and sales material and the latest product updates SOA Partner Community Forum: Keynotes delivered by our VP for product management and sales, breakouts by our experts and make sure you sign up for the hands-on bootcamps! The Forum is the best place to network with the Community & ACEs to exchange your project experience! Blog: Latest updates from the SOA Community on a weekly base for additional blogs please visit our wiki Books: What you must read when you start with Oracle SOA Suite! SOA & Application Grid Specialization eBook and the SOA & Application Grid Specialization Checklist to become an certified expert and partner! See you in Utrecht Jürgen Kress For more information on SOA Specialization and the SOA Partner Community please feel free to register at www.oracle.com/goto/emea/soa (OPN account required) Blog Twitter LinkedIn Mix Forum Wiki Website Technorati Tags: Oracle SOA Expert,Oracle,SOA,SOA Community,SOA Partner Community,OPN,Jürgen Kress

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• Entering new user data into AD LDS

  - by Robert Koritnik

  I need some help configuring AD LDS (Active Directory Lightweight Directory Services). I'm not an administrator, have never configured domains and I don't have a clue how to add new users to existing domains. The thing is I need to develop an app on top of Sharepoint 2010 that must be connected to AD. I've chosen AD LDS because I can install it on Windows 7 and it acts as an active directory even though there's no domain controller present in the network. What I've done so far: I've installed AD LDS I've added a new instance with appication directory partition name DN=Air,DC=Watanabe,DC=pri I can connect to it using ADSI Edit and see all kinds of strange But now I don't know what to do? When it opens I can see the window below, but where's next? Can anybody give me some guidelines, how can I add domain users, so I can use them in my app AD required app?

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• Wifi range issues and intermittent dropouts, Thinkpad Edge

  - by jimbo

  If I am more than a couple of metres from my access point (and I'm seeing this across various APs) with my newish Thinkpad Edge 15, running 10.10, the wifi performance becomes ... flaky. When this is happening, I see the following in dmesg, although I'm not sure if it's related: [ 2497.011099] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2502.012711] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2507.009254] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2512.008367] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2517.007467] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2522.006558] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2527.008157] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2532.007251] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2537.003838] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2542.005427] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2547.004496] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded [ 2552.003611] intel ips 0000:00:1f.6: CPU power or thermal limit exceeded lspci -vvv has the following to say about my wireless adapter: 03:00.0 Network controller: Intel Corporation Centrino Wireless-N 1000 Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx- Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 0, Cache Line Size: 64 bytes Interrupt: pin A routed to IRQ 49 Region 0: Memory at f0500000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlagn Kernel modules: iwlagn If I get within a couple of metres of the access point, I still see that output in dmesg, but the connection stabilises. My question is threefold: how do I get better wifi range, what can/should I do about those messages in dmesg, and most crucially, are the two related? As ever let me know if there's other information that would help! Edit: I am using this machine in exactly the same locations I used my previous Thinkpad (T61) running various older versions of Ubuntu, so I definitely feel there is something wrong, rather me having unreasonable expectations of range!

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• How do I figure out what is changing the userWorkstations attribute in Active Directory?

  - by Martin

  I just took over the IT for a medium sized business with a three domain controllers (2003/2008 Standard) and whenever I create a new user, after some time the user account cannot log into most machines on the network. I have traced this back to the "Log On To..." area becoming populated with a small list of machines. Even when I set the option to all computers, this list comes back after some time. I started hunting for vbs and ps1 scripts with the word "workstations" in them on all domain controllers to see if there is some kind of script to blame, but I have thus far come up empty handed. Is there a known software suite that can cause this (Microsoft Forefront, etc)? How can I figure out what is causing this list to change?

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• Windows 7 Natively on Mac OS X Bootcamp, Airport Wifi Unable To Connect....

  - by Goober

  Hello! I am using a brand new MacBook Pro. I am running a copy of Windows 7 natively via bootcamp (No use of Virtual Machine Software at all). However the only way I can get Windows to connect to the internet is via ethernet, as opposed to the Macs Airport card picking up the wireless. It just refuses to connect, and gives me a limited access status. Any ideas!? I've run Windows XP natively via bootcamp and I had a few issues with the network constantly dropping out, however I blamed that on the drivers and the general shiteness of XP.... Help greatly appreciated.

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• Troubleshooting web timeouts with a Belkin router

  - by rexzilla

  I have a Belkin FSD7632-4 ADSL wifi router. Ever since I got it, I've faced this problem of websites timing out. For example, I go to flickr.com, and the images won't load because they come from farm1.static.flickr.com. Either I wait 10 minutes or so until the timed out sockets are closed and retry (with variable results) or I reboot the router. This happens irrespective of whether I use wired or wifi network. I'm in India, using Airtel Broadband, and if I use my ISP supplied Beetel 220BX ADSL router (which has no wifi and only one LAN port), everything works fine. I copied over the broadband settings from my old router: VPI/VCI values=1/32 Encapsulation=LLC MTU=1492 I have not enabled any firewall on the router. Is there anything else I can try? Or is it a defect with the router and should I take it back for a replacement? I bought it just 2 months ago.

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• Setting a Static IP Running FreeBSD8 in VirtualBox hosted on Windows 7

  - by gvkv

  I'm using VirtualBox on Windows 7 (host) to run a FreeBSD (guest) based web server. I`ve assigned a static ip of 192.168.80. 1 to the (virtualized) NIC which is run in bridged mode. The problem is that when I ping an external server (such as google.com) I get a No route to host error: dimetro# ping google.com PING google.com (66.249.90.104): 56 data bytes ping: sendto: No route to host ... I can ping the BSD server from both another virtualized machine and my host machine and from the server, I can ping everything on the network. The router ip is 192.168.1.1/16. ADDENDUM: I have the following lines in /etc/rc.conf on the BSD VM to configure networking: defaultrouter="192.168.1.1" ifconfig_em0="inet 192.168.80.1 netmask 255.255.0.0"

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• Sync Windows Live Mail between two computers

  - by Jesper

  Hi, I have a laptop where I have been using Windows Live Mail as my email application for the last year. Yesterday I got a dell desktop as well and I am desperatly trying to set up so my desktop and laptop sync the email between each other. Im using Super Flexible Synchronizer to sync the email storage folder to a NAS on my network, so when setting up the desktop naturally I set it up to download all from the NAS. But each time I open Windows Live Mail on the new machine, some emails suddenly come in duplicates, one is read, the other is not. I have ran through the registry on the new machine and updated an ID i found, in 3 places, one being: C:\Users\\AppData\Local\Microsoft\Windows Live Contacts{blah blah blah}\DBStore\contacts.edb Still doesnt seem to be enough. Does anyone have any tips or ideas how to sync Windows Live Mail between two computers without duplicates and weird behaviour etc. grateful for your help, jesper

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• Creating windows links on Linux?

  - by Bart B

  I'm running a SAMBA file store for our Windows users, and I'd like to automatically generate windows LNK files linking to other network shares that the user needs access to. I've done quite a bit of googling and I can't find a way of creating windows links on Linux, or through Perl. I did find a perl module that looked promising in CPAN, but it will only run on Windows unfortunately. If it's not possible to create .LNK files, perhaps there is an alternative solution people can suggest to allow the users to click on a file in one SAMBA store to be linked to a different SAMBA share? Thanks, Bart.

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• What are Information Centers?

  - by user12244613

  Information Centers are similar to product pages in the Oracle Sun System Handbook Many customers like the Oracle Sun System Handbook concept of a home page with all the product attributes, troubleshooting etc. access from a single home page. This concept is now available for a range of Oracle Solaris, Systems, and Storage products. The Information Center for each product covers areas such as: Overview, Hot Topics, Patching and Maintenance. The Information Center pages are dynamically generated each night to ensure the latest content is available to you. Here are the top Solaris, Systems, and Storage Information Centers: Oracle Explorer Data Collector Oracle Solaris 10 Live Upgrade Oracle Solaris 11 Booting Information Center Oracle Solaris 11 Desktop and Graphics Information Center Oracle Solaris 11 Image Packaging System (IPS) Information Center Oracle Solaris 11 Installation Information Center Oracle Solaris 11 Product Information Center Oracle Solaris 11 Security Information Center Oracle Solaris 11 System Administration Information Center Oracle Solaris 11 Zones Information Center Oracle Solaris Crash Analysis Tool(SCAT) - Information Center Oracle Solaris Cluster Information Center Oracle Solaris Internet Protocol Multipathing (IPMP) Information Center Oracle Solaris Live Upgrade Information Center Oracle Solaris ZFS Information Center Oracle Solaris Zones Information Center CMT T1000/T2000 and Netra T2000 CMT T5120/T5120/T5140/T5220/T5240/T5440 Systems M3000/M4000/M5000/M8000/M9000-32/M9000-64 Management and Diagnostic Tools for Oracle Sun Systems Netra CT410/810 and Netra CT900 Network-Attached Storage (NAS) Oracle Explorer Data Collector Oracle VM Server for SPARC (LDoms) Pillar Axiom 600 SL3000 Tape Library Sun Disk Storage Patching and Updates Sun Fire 3800/4800/4810/6800/E2900/E4900/E6900/V1280 - Netra 1280/1290 Sun Fire 12K/15K/E20K/E25K Sun Fire X4270 M2 Server Sun x86 Servers T3 and T4 Systems Tape Domain Firmware V210/V240/V440/V215/V245/V445 Servers VSM (VTSS/VLE/VTCS)

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• How can I selectively increase latency? E.g. throttle games

  - by Arcymag

  Basically, I want networked games to run poorly on a network, but I want everything else to run smoothly. I would also appreciate advice on blocking games in general. As far as I can tell, there's a few ways to completely prevent an internet game from running: Blocking entirely via DNS configuration (e.g. hosts file), or router DNS configuration Blocking entirely via a separate DNS server Blocking the application, by uninstalling or some kind of access control Blocking the application by automatically killing the process every once in a while Blocking the application by corrupting files periodically However, I would like a more subtle way to block a program. Something that either: Increases latency (would this be doable through some kind of QoS like what DD-WRT offers?) Increases latency by using a special routing configuration for specific target IPs Throttle other systems resources, such as memory, IO, or CPU Screw around with keyboard configurations when a game is launched I would like this to work on MacOSX and Windows, but Linux would be great too. FYI I don't have a kid, but I was brainstorming with some friends and parents.

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• Keyboard Navigation of File Open Dialog in Windows 7

  - by dkusleika

  In Windows XP standard File - Open dialog, the top has a "Look In" box. I can press Alt+I to drop down a tree of the disks folders and easily navigate to other folders or network shares. In Windows 7, I can't seem to navigate the File - Open dialog as easily. The best I've been able to muster is to tab 5 times (in Excel 2007, but I assume it's a windows standard), then use arrow keys or use Alt+arrow keys like a browser to get around. It's simply not as good because I can't see the whole tree at once. Is there a way to see the whole folder tree? If not, do you have any other tips for keyboard navigation of the file open dialog in Windows 7?

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• Upgraded from VS 2008 -> VS 2010. Can't Connect to SQL Server in Staging Environment

  - by Bob Kaufman

  I have a test application written in C#/ASP.NET that I've developed using Visual Studio 2008 Professional/.NET 3.5 which connects to a local SQL Server 2008 Express instance. I upgraded the development machine to Visual Studio 2010 Professional maintaining .NET 3.5 and everything in the development environment continues to work correctly. Upon deployment of the new app to an internal staging machine, that app cannot connect to its local SQL Server 2008 Express database. I get the customary "server not found" error: A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible... Does something need to be upgraded on the staging machine to be able to host a Visual Studio 2010/.NET 3.5 application?

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