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  • cannot resolve DNS server's own domain name

    - by sims
    I have a DNS server (mega.dude - 123.123.123.123) running bind 9.4. When I: dig mega.dude I get no answer section. I have nameserver 123.123.123.123 in /etc/resolv.conf Here is my zone file: $TTL 1W @ IN SOA mega.dude. names.mega.dude. ( 2009081502 ; serial 3H ; refresh 15M ; retry 1W ; expiry 1D ) ; minimum NS ns1 NS ns2 MX 10 mail.mega.dude. A 123.123.123.123 @ A 123.123.123.123 ns1 A 123.123.123.123 ns2 A 123.123.123.123 www CNAME @ mail A 123.123.123.123 It didn't used to look like this. I read that it's evil to have an mx record pointing to a CNAME. So I changed that. Then I thought maybe that was also the case for NS. So I changed those too. Still no good. The ports are open. I can't figure it out. Oh by the way, all the other zones return fine. But not the servers own domain. So I know I'm doing something stupid. Thanks for your help all!

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  • Typical outbound port list for guest access?

    - by Steve
    I manage a weekly rental house that includes wireless Internet access. I've allowed all outbound ports on my router but my ISP has disabled my Internet access twice now because guests have downloaded (or served up) copyrighted content. So I'd like to institute some port filtering to discourage p2p sharing (see disclaimer below). But I don't want to inconvenience the 99.9% of folks who keep things above-board. My question is, what outbound ports are typically open for rental/hotel wireless Internet access, or where can I find such a list? TCP 80,443,25,110 at a minimum. Though my own email service uses 995 and 465 for SSL, some may use IMAP, I personally use SSH and FTP, so I'll open those. Roughly I figure I need to open access to privileged ports, and close 1024 & above. Is there a whitelist I should institute for commonly used high ports? And does it make sense to block UDP 1024 ? Disclaimer: I realize anyone replying to this message could circumvent the port filtering and share content to their heart's content. I do not need comprehensive p2p blocking, which requires more than a port whitelist. Anyone staying at the house shoulders the responsibility for their Internet use, per the rental contract. Also anyone savvy enough to circumvent the port filters would hopefully be savvy enough to use some sort of peer blocking, thereby preventing the ISP from taking down the service.

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  • How to get a higher resolution on Ubuntu 11.04 using an intel chipset

    - by Saif Bechan
    I have a bit slow PC here, so I decided to put Ubuntu 11.04 on it. It use to run Windows Vista on a resolution of 1280x1024, so both my hardware and monitor support it. Now I'm on Ubuntu, but can only run 1024x768, and the screen is not that bright. Its like when you don't have the right drivers on a Windows machine. Now i'm new to linux, so I do not know what do do. I have an onboard Intel chipset i965. Maybe this is some useful information, I read something about it on a forum: lspci 00:00.0 Host bridge: Intel Corporation 82G33/G31/P35/P31 Express DRAM Controller (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express Integrated Graphics Controller (rev 02) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 01) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 01) 00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01) 00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 01) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01) 03:03.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev c0) Can someone please tell me how I can get the screen better? saif@sodium:~$ xrandr Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096 VGA1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0* 800x600 60.3 56.2 848x480 60.0 640x480 59.9

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  • Expand disk space on Ubuntu 10.04 (VMWare Guest)

    - by Jason Clawson
    I need to resize the disk space of an ubuntu guest in VMWare Workstation. After using the expand disk utility in vmware workstation, I need to do some linux magic to resize the parition. I have searched and found a lot of posts about resizing it. Unfortunately I don't really understand it all that well. Can anyone help me out with this? df -h gives me: Filesystem Size Used Avail Use% Mounted on /dev/mapper/ubuntu-root 19G 2.6G 16G 15% / none 496M 172K 495M 1% /dev none 500M 0 500M 0% /dev/shm none 500M 64K 500M 1% /var/run none 500M 0 500M 0% /var/lock none 500M 0 500M 0% /lib/init/rw none 19G 2.6G 16G 15% /var/lib/ureadahead/debugfs /dev/sda1 228M 36M 181M 17% /boot lvs says: LV VG Attr LSize Origin Snap% Move Log Copy% Convert root ubuntu -wi-ao 18.88g swap_1 ubuntu -wi-ao 884.00m fdisk -l says: Disk /dev/sda: 21.5 GB, 21474836480 bytes 255 heads, 63 sectors/track, 2610 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00033718 Device Boot Start End Blocks Id System /dev/sda1 * 1 32 248832 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 32 2611 20719617 5 Extended /dev/sda5 32 2611 20719616 8e Linux LVM I really appreciate the help.

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  • How does Windows 7 DNS client work?

    - by Mark Allison
    I am using a local DHCP and DNS server on my home network on a linux machine. It is running CentOS 6.3 with dnsmasq 2.48. It's all working fine except for local DNS lookups for Windows machines only. I have a mix of Ubuntu, CentOS and Windows machines on the network, some virtual, some physical. I have a machine called boron and the domain is called localdomain If I ping boron from any linux machine, I get [root@lithium lists]# ping -c3 boron PING boron.localdomain (10.0.0.5) 56(84) bytes of data. 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=1 ttl=64 time=0.740 ms 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=2 ttl=64 time=0.478 ms 64 bytes from boron.localdomain (10.0.0.5): icmp_seq=3 ttl=64 time=0.458 ms --- boron.localdomain ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2000ms rtt min/avg/max/mdev = 0.458/0.558/0.740/0.131 ms If I do it from my Windows 7 machine, I get: Ping request could not find host boron. Please check the name and try again. If I try ping boron.localdomain I get: Pinging boron.localdomain [67.215.65.132] with 32 bytes of data: Reply from 67.215.65.132: bytes=32 time=16ms TTL=57 Reply from 67.215.65.132: bytes=32 time=188ms TTL=57 Reply from 67.215.65.132: bytes=32 time=15ms TTL=57 Reply from 67.215.65.132: bytes=32 time=14ms TTL=57 Ping statistics for 67.215.65.132: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 14ms, Maximum = 188ms, Average = 58ms which is clearly wrong. Why is it going out to the internet? Why can't my windows machine resolve the boron hostname to a FQDN? My Windows machines and linux machines get their network config from DHCP. UPDATE If I do ipconfig /all in Windows, it looks as I would expect: Windows IP Configuration Host Name . . . . . . . . . . . . : lanthanum Primary Dns Suffix . . . . . . . : Node Type . . . . . . . . . . . . : Hybrid IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : .localdomain Ethernet adapter Local Area Connection: Connection-specific DNS Suffix . : .localdomain Description . . . . . . . . . . . : Realtek PCIe GBE Family Controller Physical Address. . . . . . . . . : 50-E5-49-38-FC-A2 DHCP Enabled. . . . . . . . . . . : Yes Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 10.0.0.57(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Lease Obtained. . . . . . . . . . : 23 August 2012 13:58:45 Lease Expires . . . . . . . . . . : 24 August 2012 07:58:48 Default Gateway . . . . . . . . . : 10.0.0.6 DHCP Server . . . . . . . . . . . : 10.0.0.6 DNS Servers . . . . . . . . . . . : 10.0.0.6 208.67.222.222 208.67.220.220 NetBIOS over Tcpip. . . . . . . . : Enabled When I do an nslookup I get: Server: carbon.localdomain Address: 10.0.0.6 *** carbon.localdomain can't find boron: Unspecified error However if I do ifconfig -a in Linux I get: [root@nitrogen ~]# ifconfig -a eth0 Link encap:Ethernet HWaddr 00:0C:29:AF:EC:2A inet addr:10.0.0.7 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:187687 errors:0 dropped:0 overruns:0 frame:0 TX packets:5857 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:23910700 (22.8 MiB) TX bytes:712964 (696.2 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:329894 errors:0 dropped:0 overruns:0 frame:0 TX packets:329894 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:67153143 (64.0 MiB) TX bytes:67153143 (64.0 MiB) and nslookup: [root@nitrogen ~]# nslookup boron Server: 10.0.0.6 Address: 10.0.0.6#53 Name: boron Address: 10.0.0.5 Both machines are on the same network using the same DHCP server. UPDATE 2 I thought the issue was resolved but I am getting intermittent DNS resolving issues but only on my Windows 7 machine. All my linux boxes are fine. This is what happens when I ping and nslookup from Windows to a Windows 2008 Server: C:\Users\mark>nslookup magnesium Server: carbon.localdomain Address: 10.0.0.6 Name: magnesium.localdomain Address: 10.0.0.12 C:\Users\mark>ping magnesium Pinging magnesium.localdomain [67.215.65.132] with 32 bytes of data: Reply from 67.215.65.132: bytes=32 time=267ms TTL=57 Reply from 67.215.65.132: bytes=32 time=162ms TTL=57 Reply from 67.215.65.132: bytes=32 time=510ms TTL=57 Reply from 67.215.65.132: bytes=32 time=146ms TTL=57 Ping statistics for 67.215.65.132: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 146ms, Maximum = 510ms, Average = 271ms And from Linux: [root@beryllium ~]# ping -c4 magnesium PING magnesium.localdomain (10.0.0.12) 56(84) bytes of data. 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=1 ttl=128 time=0.176 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=2 ttl=128 time=0.634 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=3 ttl=128 time=0.685 ms 64 bytes from magnesium.localdomain (10.0.0.12): icmp_seq=4 ttl=128 time=0.263 ms --- magnesium.localdomain ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3002ms rtt min/avg/max/mdev = 0.176/0.439/0.685/0.223 ms [root@beryllium ~]# nslookup magnesium Server: 10.0.0.6 Address: 10.0.0.6#53 Name: magnesium.localdomain Address: 10.0.0.12 UPDATE 3 I stopped the Windows DNS client on my Windows 7 machine with net stop dnscache and it is now working fine. It would be nice to get DNS working with the DNS client on, but I might be OK without it, what do you think?

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  • configure server and create website without any control panel

    - by Emad Ahmed
    i am trying to configure my new server without cpanel i've installed php/mysql/apache And it's now working fine if you visit the server ip http://46.166.129.101/ you'll see the welcome page i've configured my dns too my nameserverips file [root@server]# cat /etc/nameserverips 46.166.129.101=ns1.isellsoftwares.com 46.166.129.101=ns2.isellsoftwares.com if you visit this link http://ns1.isellsoftwares.com you'll see the welcome page too!! but if you visit isellsoftwares.com you'll see ( 'Firefox can't find the server at www.isellsoftwares.com.' ) Now my question is: How to create an account for this domain on the server?? i've tryied to add virtualHost tag in apache <VirtualHost *:80> ServerAdmin [email protected] ServerAlias www.isellsoftwares.com DocumentRoot /var/www/html/issoft ServerName isellsoftwares.com ErrorLog logs/dummy-host.example.com-error_log CustomLog logs/dummy-host.example.com-access_log common </VirtualHost> it still not working ... i've added named file for this domain (( isellsoftwares.com.db )) ; Zone file for isellsoftwares.com $TTL 14400 isellsoftwares.com. 86400 IN SOA ns1.isellsoftwares.com. elsolgan.yahoo.com. ( 2012031500 ;Serial Number 86400 ;refresh 7200 ;retry 3600000 ;expire 86400 ;minimum ) isellsoftwares.com. 86400 IN NS ns1.isellsoftwares.com. isellsoftwares.com. 86400 IN NS ns2.isellsoftwares.com. isellsoftwares.com. 14400 IN A 46.166.129.101 localhost 14400 IN A 127.0.0.1 isellsoftwares.com. 14400 IN MX 0 isellsoftwares.com. mail 14400 IN A 46.166.129.101 www 14400 IN CNAME isellsoftwares.com. ftp 14400 IN A 46.166.129.101 cpanel 14400 IN A 46.166.129.101 whm 14400 IN A 46.166.129.101 webmail 14400 IN A 46.166.129.101 webdisk 14400 IN A 46.166.129.101 ns1 14400 IN A 46.166.129.101 ns2 14400 IN A 46.166.129.101 but it still not working !!!!! So, what else i should do??

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  • Processing-time billing in Amazon EC2

    - by Rafael Almeida
    Hi all! I think my question is fairly basic, but I would like a clarification: in the Pricing part of AWS we can see that Amazon charges people around .10 by the 'instance computing hour'. I've seen in a blog post somewhere (can't remember where exactly, and even if I did I think it was in Portuguese anyway) that this way your minimum monthly payment would be $72 (= .10 $s/hour x 24 hours x 30 days). Is this correct? (I don't think it is!) In my understanding is that this 'virtual computing time' is only used when your machine is actually doing something (serving pages, serving the admin via ssh, whatever), so real billable usage would be less than 720 hours/month in most webserver scenarios. Is my view correct? If it is, then it leads me to another question: is it economically interesting to buy access to one of these instances for testing? I mean, would I have the 'freedom' to 'forget' about it for a month and receive a very-close-to-zero (as in, a few cents) bill? Do you do it/know of anybody who does? Any thoughts on the matter (as in, "yes, it's a good idea", or "yes, but there's this 'gotcha': ...", or "no, nobody does it because of...")? PS: sorry for the loong question text. I highlighted the main questions for easy view. Also, I'm not sure if this question is actually more than one and if it's desirable for the community, so, sorry if it is too! Thanks in advance!

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  • Disappearing Arial on 2 Macs

    - by drewk
    I noticed that Safari started rendering common web pages in a funny manner on two different Macs that I have. One is a Macbook Pro and the other a Mac Pro desktop. Yahoo and Google would appear all excessively bold or all italic and not at all look right or acceptable. The computers are all running OS X 10.6.3 "Snow Leopard" Turns out that "Arial.TTF" and "Arial Bold.ttf" got deleted somehow on these two computers. I restored Arial through Font Book and got my web mojo back. So questions: 1) Anyone seen "arial" strangely randomly disappear? The only thing in common is these are the only two computers out of eight on site that recently got Adobe CS 5 installed. Has anyone had CS 5 delete arial? 2) When I restored arial with font book, it goes into User fonts rather than the All fonts. Can I use Font Book to restore a font in /System/Library/Fonts or do I need to do that manually? 3) I located THIS article on the web regarding OS X fonts. Essentially, Snow Leopard did away with the older .dfont format and replaced with open True Type. There is a minimum font list, but Arial is not among them. Arial is installed by MS Office. 4) Why are web sites affected by Arial being missing anyway? If I look at the HTML source for Yahoo for example, "arial" is specified by name only in an ad. Yahoo itself does not specify a font name. In my Safari preferences, I have Times and Courier specified as the default font which is the default for Safari when installed. How does a missing Arial screw things up anyway? Thanks in advance.

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  • Degraded RAID-5 array with lvm2 lost superblock and partition table

    - by Fred Phillips
    I have a RAID-5 array of 4x1TB hard disks with one lvm2 partition on Ubuntu Linux 10.04 LTS. One of the disks has failed. I have re-assembled the array without this failed disk but now mdadm --examine claims the array has no superblock and fdisk says it has no partition table. What can I do to recover the data? # mdadm -D /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sat Mar 5 14:43:49 2011 Raid Level : raid5 Array Size : 2930276352 (2794.53 GiB 3000.60 GB) Used Dev Size : 976758784 (931.51 GiB 1000.20 GB) Raid Devices : 4 Total Devices : 4 Persistence : Superblock is persistent Update Time : Sat Mar 5 15:06:49 2011 State : clean, degraded Active Devices : 3 Working Devices : 3 Failed Devices : 1 Spare Devices : 0 Layout : left-symmetric Chunk Size : 512K Name : boba:1 (local to host boba) UUID : 52eb4bc9:c3d8aab5:e0699505:e0e1aa05 Events : 18 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 8 65 1 active sync /dev/sde1 2 8 49 2 active sync /dev/sdd1 3 0 0 3 removed 4 8 17 - faulty spare /dev/sdb1 # mdadm --examine /dev/md0 mdadm: No md superblock detected on /dev/md0. # fdisk -l /dev/md0 Disk /dev/md0: 3000.6 GB, 3000602984448 bytes 2 heads, 4 sectors/track, 732569088 cylinders Units = cylinders of 8 * 512 = 4096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 524288 bytes / 1572864 bytes Disk identifier: 0x00000000 Disk /dev/md0 doesn't contain a valid partition table # cat /proc/mdstat Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1] [raid10] md0 : active raid5 sdb1[4](F) sda1[0] sdd1[2] sde1[1] 2930276352 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/3] [UUU_] unused devices: <none>

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  • Server unreachable without www

    - by deamon
    My server is unreachable without "www." prefix, even when trying it with ping. The DNS entry looks like this: $TTL 86400 @ IN SOA ns1.first-ns.de. postmaster.robot.first-ns.de. ( 2011010600 ; serial 14400 ; refresh 1800 ; retry 604800 ; expire 86400 ) ; minimum @ IN NS robotns3.second-ns.com. @ IN NS robotns2.second-ns.de. @ IN NS ns1.first-ns.de. @ IN A 1.2.3.4 localhost IN A 127.0.0.1 mail IN A 1.2.3.4 www IN A 1.2.3.4 ftp IN CNAME www imap IN CNAME www loopback IN CNAME localhost pop IN CNAME www relay IN CNAME www smtp IN CNAME www @ A DNS record of the same type for another domain on the same server is working with and without "www". And the VirualHost config looks like this: <VirtualHost *:80> ServerName somewhere.com ServerAlias www.somewhere.com ServerSignature Off ... </VirtualHost> Any idea what could be wrong?

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  • Do you really need cable management for a cabinet with just switches and patch panels?

    - by ObligatoryMoniker
    We are about to start wiring out a building expansion and our vendor has laid out the racks in the following configuration: Option 1 1U Fiber patch panel 2U Cable Manager 2U 48 port Patch Panel 2U Cable Manager 2U 48 port Patch Panel 2U Cable Manager 1U 48 port Switch 2U Cable Manager 1U 48 port Switch Total = 15U All the patch panels would be connected to the switches with 1ft+ cables fed through cable management. What I am considering instead is: Option 2 1U Fiber patch panel 1U 24 port Patch Panel 1U 48 port Switch 2U 48 port Patch Panel 1U 48 port Switch 2U 48 port Patch Panel Total = 8U All of the patch panels would be connected to the switches with .5 ft cables directly on their face with the top 24 ports of each switch patched to the patch panel above it and the bottom 24 ports of each switch patched to the patch panel beneath it which would not require any cable management. If I go with option 2 it save all of the space used by cable management and allows us to keep adding on switches and patch panels at the end without having to re-cable all of the patch panels above. Our vendor has indicated that this is not best practice and that .5ft cables will introduce cross talk. I could understand that being the case if we were connecting the .5 ft cable directly into another switch but we are connecting it to a patch panel that likely has another 150 ft cable run from the back of the patch panel out to the port in the building in which case the real resulting cable is 150.5 ft at minimum before even connecting it to a PC. It seems like it makes much more sense to go with option 2. It is easier to expand, saves space, and saves money on cabling and cable management. Does this kind of configuration make sense or is there a legitimate reason to choose Option 1 over Option 2?

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  • Server 2012, Jumbo Frames - should I expect problems?

    - by TomTom
    Ok, this sound might stupid - but is there any negative on just enabling jumbo frames in practice? From what I understand: Any switch or ethernet adapter that sees a jumbo frame it can not handle will just drop it. TCP is not a problem as max frame size is negotiated in the setinuo phase. UCP is a theoretical problem as a server may just send a LARGE UDP packet that gets dropped on the way. Practically though, as UDP is packet based, I do not really think any software WOULD send a UDP packet larger than 1500 bytes net without app level configuration changes - at least this is how I do my programming, as it is quite hard to get a decent MTU size for that without testing yourself, so you fall back in programming to max 1500 packets. The network in question is a standard small business network - we upgraded now from a non managed 24 port switch to a 52 port switch with 4 10g ports (netgear - quite cheap) and will mov a file server to 10g for also ISCSI serving. All my equipment on the Ethernet level can handle minimum 9000 bytes and due to local firewalls I really want to get packets larger (less firewall processing), but the network is also NAT'ed to the internet. On top, different machines move around (download) large files (multi gigabyte area) quite often for processing. The question is - can I expect problems when I just enable jumbo frames? Again, this is not totally ignorance - I just don't see programs sending more than 1500 byte UDP packets (if that is a practical problem please tell me) and for TCP the MTU is negotiated anyway. if there is a problem I can move to a dedicated VLAN, but this has it's own shares of problems as basically most workstations must then be on both VLAN's.

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  • What is the best way/Software to manage multiple short lived instances of virtual machines ?

    - by Newtopian
    Hi, We have a QA department that have to test our software on multiple combination of OS and DMBS. With Windows spewing out many different versions the combinatorial math of all this can be daunting. So we decided on visualizing our setups but so far it only displaces the problem. The cost of hardware is expensive and we need many different combination far exceeding your server capacity to deliver. Also, these instances are throw away, once the test is complete we no longer need it, furthermore to ensure proper test isolation we should start fresh from a new instance. Lastly we only need a small subset of these system online at any given time. What I am looking for is a way to manage inventory so that our QA staff can order instances to be put online as required and discarded once used. Instances are spawned from a pool of freshly installed systems with the appropriate combination ready to accept our software. It also should be possible for two or more people to start the same instance at the same time, though we could manage without this if it proves too complex to put in place. Finally our budget is pretty thin, we can probably make some purchases but ideally expenditures should be kept to a minimum. To summarize we should be able to : Bring instances online on demand. Ideally should offer queue and scheduling management Destroy instances on demand Keep masters in inventory but not online. Manage large inventory of VMs (30-100 maybe more) with small staff of users (5-10). Allow adding, deleting and changing instances from inventory (bring online, make changes and check back in, or create new and check in). Allow few long lived instances for support tools (normal VM server usage) Thanks for your answers

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  • Recommendations for handling Directory Harvesting spam on Exchange 2003

    - by Aaron Alton
    Our Exchange server is getting slammed with anywhere between 450,000 and 700,000 spam messages per day. We receive about 1700 legitimate messages in the same time frame. Roughly 75% of the spam is directory harvesting. We currently have GFI MailEssentials installed. To it's credit, it's doing a very good job, but the sheer volume of spam that we're receiving, and the number of connections that our exchange server is making is preventing legitimate email from being delivered in a timely manner. GFI is set up to check for directory harvesting at the SMTP level, which I presume intercepts the mail before it hits the Exchange services , or goes through SMSE. This "module" is ordered at the top of the list, so (hopefully) dealing with the harvesting is consuming a minimum amount of server resources and bandwidth. My question is, is there anything I can do to prevent our Exchange server's connection pool from being eaten up by these spam hosts? We had to limit the number of concurrent connections being made by Exchange, because it was consuming all of our bandwidth. Thanks, in advance.

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  • Finding useful crash-information in Windows 8 Consumer Preview

    - by Lukas Knuth
    I'm currently diving into C# and wanted to play around with the new Metro-styled-applications introduced with Windows 8, so I updated my Windows 7 to Windows 8 Consumer Preview. The problem I'm facing right now is, that the system freezes after 3-5 minutes. It does not take any input from the keyboard or mouse and it does not recover (at least not in less then 10 minutes). Since I have a background in Linux, I'd like to find some information about the cause of the freeze, but I have no idea where to search. I checked the system-logs (under "System Control" - "Management") but they only record that the system was shut down unexpectedly (doe to the face that I held down the power-button to reboot the PC). There is no useful crash-information in there. I don't want to spend hours on randomly reinstalling drivers and doing things that "might help". Isn't there any place I can find some useful information about the freeze? Before you ask: I installed Windows 8 as an updated on my old Windows 7 installation (which worked fine by the way). My hardware fits the minimum requirements (specs can be found here, the MacMini 3,1 model with 2GHz processor). I have updated the graphics-card drivers to the newest Windows 8 drivers from nVidia.

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  • Network latency and speed of light

    - by James
    This was kinda of covered by the following Is minimum latency fixed by the speed of light? , but i would like to add the follow up a bit. The scenario is as follows; we have two opposing sites one on the West Coast of the US and one in Ireland. The customer is in central Europe, and has requested a latency test. Ireland gives responses of ~65-70ms. However the West Coast guys claim to be faster with a response of 60ms. Now a quick check says that light in fiber would take about 42ms to make the trip to the States and 8.5ms to Ireland. So obviously this is a single hop and does not include routers, switches, firewalls, protocol overhead etc. Would I be right to call BS on their figures? As a final note I tested a ping to Google IP address that was allegedly on the west coast from a site that covered a similar distance and was amazed to get a response time of 20ms. Suggesting ICMP packets that travel twice the speed of light. So A) what am I missing B) Am I right to suspect shenanigans? UPDATE: Guys thanks so far for your help and I have been reading various previous questions on this. About 5 years I had an issue where the hop from the UK to Ireland added 10ms of latency no matter what we did. In the end I moved the servers; So imagine my surprise when I have guys that claim they are 5ms faster with a transatlantic trip. So again should I call BS? Oh and assume both sites are normal mortals that don't have access to Google magical routing, warp dives or flux capacitors. :)

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  • convert a logical partition to a primary partition

    - by ant2009
    Hello, Fedora 14 xfce I have the following partition setup. I would like to know how can I convert the logical partition sda6 to a primary partition. Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1707a8a5 Device Boot Start End Blocks Id System /dev/sda1 2048 1026047 512000 83 Linux /dev/sda2 1026048 205844479 102409216 83 Linux /dev/sda3 205844480 214228991 4192256 82 Linux swap / Solaris /dev/sda4 214228992 625141759 205456384 5 Extended /dev/sda5 214231040 573562879 179665920 83 Linux /dev/sda6 573564928 625141759 25788416 7 HPFS/NTFS Filesystem Size Used Avail Use% Mounted on /dev/sda2 97G 5.0G 91G 6% / tmpfs 494M 176K 494M 1% /dev/shm /dev/sda1 485M 68M 392M 15% /boot /dev/sda5 169G 26G 135G 16% /home # partition table of /dev/sda unit: sectors /dev/sda1 : start= 2048, size= 1024000, Id=83 /dev/sda2 : start= 1026048, size=204818432, Id=83 /dev/sda3 : start=205844480, size= 8384512, Id=82 /dev/sda4 : start=214228992, size=410912768, Id= 5 /dev/sda5 : start=214231040, size=359331840, Id=83 /dev/sda6 : start=573564928, size= 51576832, Id= 7 I would like to convert sda6 to a primary partition, the reason for this it to install windows 7 starter. Many thanks for any suggestions,

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  • Why I cannot copy install.wim from Windows 7 ISO to USB (in linux env)

    - by fastreload
    I need to make a USB bootable disk of Windows 7 ISO. My USB is formatted to NTFS, ISO is not corrupt. I can copy install.wim elsewhere but I cannot copy it to USB. I even tried rsync. rsync error sources/install.wim rsync: writefd_unbuffered failed to write 4 bytes to socket [sender]: Broken pipe (32) rsync: write failed on "/media/52E866F5450158A4/sources/install.wim": Input/output error (5) rsync error: error in file IO (code 11) at receiver.c(322) [receiver=3.0.8] Stat for windows.vim File: `X15-65732 (2)/sources/install.wim' Size: 2188587580 Blocks: 4274600 IO Block: 4096 regular file Device: 801h/2049d Inode: 671984 Links: 1 Access: (0664/-rw-rw-r--) Uid: ( 1000/ umur) Gid: ( 1000/ umur) Access: 2011-10-17 22:59:54.754619736 +0300 Modify: 2009-07-14 12:26:40.000000000 +0300 Change: 2011-10-17 22:55:47.327358410 +0300 fdisk -l Disk /dev/sdd: 8103 MB, 8103395328 bytes 196 heads, 32 sectors/track, 2523 cylinders, total 15826944 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdd1 * 32 15826943 7913456 7 HPFS/NTFS/exFAT hdparm -I /dev/sdd: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ATA device, with non-removable media Model Number: UF?F?A????U]r???U u??tF?f?`~ Serial Number: ?@??~| Firmware Revision: ????V? Media Serial Num: $I?vnladip raititnot baelErrrol aoidgn Media Manufacturer: o eparitgns syetmiM Standards: Used: unknown (minor revision code 0x0c75) Supported: 12 8 6 Likely used: 12 Configuration: Logical max current cylinders 17218 0 heads 0 0 sectors/track 128 0 -- Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 0 MBytes device size with M = 1000*1000: 0 MBytes cache/buffer size = unknown Capabilities: IORDY(may be)(cannot be disabled) Queue depth: 11 Standby timer values: spec'd by Vendor R/W multiple sector transfer: Max = 0 Current = ? Recommended acoustic management value: 254, current value: 62 DMA: not supported PIO: unknown * reserved 69[0] * reserved 69[1] * reserved 69[3] * reserved 69[4] * reserved 69[7] Security: Master password revision code = 60253 not supported not enabled not locked not frozen not expired: security count not supported: enhanced erase 71112min for SECURITY ERASE UNIT. 172min for ENHANCED SECURITY ERASE UNIT. Integrity word not set (found 0xaa55, expected 0x80a5)

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  • Allignment of ext3 partition on LVM RAID volume group

    - by John P
    I'm trying to add a partition on a LVM that resides on a RAID6 volume group and fdisk is complaining about the partition not residing on a physical sector boundry. My question is, how do you calculate the correct starting sector for a partition on a LVM? This partition will be formated ext3. Would it be better to just format the LVM directly instead of creating a new partition? Disk /dev/dedvol/backup: 2199.0 GB, 2199023255552 bytes 255 heads, 63 sectors/track, 267349 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 1048576 bytes / 8388608 bytes Disk identifier: 0x4e428f49 Device Boot Start End Blocks Id System /dev/dedvol/backup1 63 267349 2146982827+ 83 Linux Partition 1 does not start on physical sector boundary. lvdisplay /dev/dedvol/backup --- Logical volume --- LV Name /dev/dedvol/backup VG Name dedvol LV UUID OV2n5j-7LHb-exJL-t8dI-dU8A-2vxf-uIicCt LV Write Access read/write LV Status available # open 0 LV Size 2.00 TiB Current LE 524288 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 32768 Block device 253:1 vgdisplay dedvol --- Volume group --- VG Name dedvol System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 3 VG Access read/write VG Status resizable MAX LV 0 Cur LV 2 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 14.55 TiB PE Size 4.00 MiB Total PE 3815448 Alloc PE / Size 3670016 / 14.00 TiB Free PE / Size 145432 / 568.09 GiB VG UUID 8fBcOk-aXGx-P3Qy-VVpJ-0zK1-fQgy-Cb691J

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  • Squid3 not caching simple request and response

    - by Nick Spacek
    Hi folks, I've pared down my squid.conf to try to figure this out: http_port 80 accel defaultsite=host.to.cache cache_peer ip.to.cache parent 80 0 no-query originserver acl our_sites dstdomain host.to.cache http_access allow our_sites refresh_pattern . 1 20% 4320 Requests are being proxied correctly, so that's a start. Here's a request: GET http://host.to.cache/path?some_param=true Accept: */* Accept-Charset: ISO-8859-1,utf-8 Accept-Encoding: gzip,deflate,sdch Accept-Language: en-US,en Connection: keep-alive Host: host.to.cache User-Agent: myuseragent And the response: Connection: keep-alive Content-Length: 585 Content-Type: application/xml Date: Thu, 06 Jan 2011 18:33:11 GMT Via: 1.0 localhost (squid/3.0.STABLE19) X-Cache: MISS from localhost X-Cache-Lookup: MISS from localhost:80 The response has no caching-related headers, but I thought that refresh_pattern would set a default behavior for responses without caching-related headers. For my test, I wanted to cache everything for one minute at minimum. Am I missing something obvious? I did take a peek at this question: Squid isn't caching ...and ran through the page here: http://www.mnot.net/cache_docs/ briefly, but didn't see anything relevant (not to say that there isn't, I could have missed something). Thanks for any help.

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  • LogMeIn style remote access to NAS drive

    - by Mere Development
    I've been asked to setup some remote access to a NAS drive. The NAS drive will sit on a VLAN inside a network that uses a Cisco 891 IS router as gateway. The charity have no SSL-VPN licenses for the Cisco. At present there are no open ports or services on the Cisco itself and ideally we would like to keep it that way for a while, hence the request for a LogMeIn style service that's initiated from inside. We need multiple user access, about 10 max. Using LogMeIn on a machine connected to the NAS would only provide screen sharing I believe, and no concurrent connections (could be wrong?) The end users need to be able to read and write files to the NAS from Mac's and PC's around the globe. Read-only access from Mobile devices would be a bonus but not absolutely necessary. This is for a charity, non-commercial, but they are willing to spend if necessary. Cisco config knowledge is at a minimum so if I can avoid upsetting that delicate device I'll be happy :) Anyone have any clever ideas? I can provide more information on request. Thanks, Ben

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  • Triple monitor setting in Linux with USB-HDMI adapter

    - by Oscar Carballal
    I'm trying to set up a triple monitor desktop at my office using Fedora 17, but it seems impossible, let me explain the setting: Laptop ASUS K53SD with 2 graphic cards, Intel and nVidia (Screen controled by Intel card) 24" Full HD monitor connected to the HDMI output (controlled by Intel card) 23" Full HD monitor connected to an USB-HDMI adapter (via framebuffer in /dev/fb2, apparently) VGA output (not used) controlled by nVidia card First of all, the USB-HDMI adapter works perfectly, it gives me a green screen (which means the communication is OK) and I can make it work if I set up a single monitor setting via framebuffer in Xorg. Here I leave the page where I got the instructions: http://plugable.com/2011/12/23/usb-graphics-and-linux Now I'm trying to set up the the two main monitors (laptop and 24") with the intel driver and the 23" with the framebuffer, but the most succesful configuration I get is the two main monitors working and the third disconnected. Do you have any idea what can I do to make this work? Here I leave my xRandr output and my Xorg conf: -> xrandr Screen 0: minimum 320 x 200, current 3286 x 1080, maximum 8192 x 8192 LVDS1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 193mm 1366x768 60.0*+ 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA2 disconnected (normal left inverted right x axis y axis) HDMI1 connected 1920x1080+1366+0 (normal left inverted right x axis y axis) 531mm x 299mm 1920x1080 60.0*+ 50.0 25.0 30.0 1680x1050 59.9 1680x945 60.0 1400x1050 74.9 59.9 1600x900 60.0 1280x1024 75.0 60.0 1440x900 75.0 59.9 1280x960 60.0 1366x768 60.0 1360x768 60.0 1280x800 74.9 59.9 1152x864 75.0 1280x768 74.9 60.0 1280x720 50.0 60.0 1440x576 25.0 1024x768 75.1 70.1 60.0 1440x480 30.0 1024x576 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 720x576 50.0 848x480 60.0 720x480 59.9 640x480 72.8 75.0 66.7 60.0 59.9 720x400 70.1 DP1 disconnected (normal left inverted right x axis y axis) 1920x1080_60.00 60.0 The Xorg file: # Xorg configuration file for using a tri-head display Section "ServerLayout" Identifier "Layout0" Screen 0 "HDMI" 0 0 Screen 1 "USB" RightOf "HDMI" Option "Xinerama" "on" EndSection ########### MONITORS ################ Section "Monitor" Identifier "USB1" VendorName "Unknown" ModelName "Acer 24as" Option "DPMS" EndSection Section "Monitor" Identifier "HDMI1" VendorName "Unknown" ModelName "Acer 23SH" Option "DPMS" EndSection ########### DEVICES ################## Section "Device" Identifier "Device 0" Driver "intel" BoardName "GeForce" BusID "PCI:0:02:0" Screen 0 EndSection Section "Device" Identifier "USB Device 0" driver "fbdev" Option "fbdev" "/dev/fb2" Option "ShadowFB" "off" EndSection ############## SCREENS ###################### Section "Screen" Identifier "HDMI" Device "Device 0" Monitor "HDMI1" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" Identifier "USB" Device "USB Device 0" Monitor "USB1" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSection EndSection

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  • Affordable combined Ruby/Rails/Redmine + Subversion hosting?

    - by Pekka
    I'm a self employed web developer and after nine years of hard work, I'm looking to become a bit more "vagrant" starting next year, do some much-needed traveling and a bit and work off and on, making use of one of the greatest advantages of a programming job: The ability to work virtually from everywhere. For that, I am looking for a reliable hosting company I can entrust my code to in the form of a number of Subversion repositories, and an installation of the Redmine project management tool. As my financial situation may vary during traveling, I am looking for something I can pay up front for a year or two, and is obviously not too pricey. I don't care where the company is located, as long as it's trustworthy and solid, meaning it's not likely to go out of business next month. Does anybody know good recommendations? Preferably from own, personal, good experience. I have looked at CVSDude / Codesion and while they are certainly great, they don't offer Redmine of course, and seem to be aiming toward bigger organizations mainly. What I would need: 2-5 Gigs of space minimum, freely distributable between SVN, and Redmine attachments Unlimited number of Subversion projects Access control (team members / checkout-only accounts / etc.) I don't mind configuring the svn settings on file basis myself I need the possibility to map a custom domain to the package that is hosted elsewhere Frequent backups and access to those backups through FTP or other means I have been running my own virtual server for this until now, but I don't want the hassle, especially on the security side, while I may not always have the internet connection to fix problems that may come up.

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  • New build won't boot: some fans turning, no beep or video

    - by Dave
    When my new system is powered up, the case fan and power supply fans turn fine. The CPU fan twitches, but never gets going. Although I've heard that with AMDs and Gigabyte motherboards that is not necessary a problem. Hard drive is spinning. However, there is absolutely no indication that anything else is happening. The motherboard, as far as I can tell, does not have an internal speaker, but I harvested one from another machine and plugged it in and still no beeps at all. The monitor screen stays black, on both the integrated VGA and DVI. This is a brand new build, and has never successfully booted. My parts are: AMD Athlon II X2 245 Regor 2.9GHz Socket AM3 65W Dual-Core Processor Model ADX245OCGQBOX - includes CPU cooler) GIGABYTE GA-MA785GPMT-UD2H AM3 AMD 785G HDMI Micro ATX AMD Motherboard - Retail G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL8D-4GBRM - Retail CORSAIR CMPSU-400CX 400W ATX12V V2.2 80 PLUS Certified Compatible with Core i7 Power Supply - Retail SAMSUNG Spinpoint F3 HD502HJ 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive COOLER MASTER Elite 341 RC-341C-KKN1-GP Black Steel MicroATX Mid Tower Computer Case - Retail I also have a DVD burner, but it acts the same whether that is plugged in or not. I'm using the on board video. What I've tried so far: I've switched power supplies, with no difference. I've tried different monitors (of which all are working on other machines) with no difference. I have tried putting it one memory module at a time, with no difference. I have tried the absolute minimum I can think of (power supply into motherboard, power button ONLY plugged into front panel, CPU fan plugged in), with no difference. I appreciate any ideas anyone might have. Do I need to RMA the motherboard? This is my first build, so there might be something obvious. I was very careful in assembly with static; I'm confident nothing was zapped during assembly.

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  • mount error 5 = Input/output error

    - by alharaka
    I am running out of ideas. After a long period of testing this morning, I cannot seem to get this to work, and I have no idea why. I want to mount a Windows SMB/CIFS share with a Debian 5.0.4 VM, and it is not cooperating. This the command I am using. debianvm:/home/me# whoami root debianvm:/home/me# smbclient --version Version 3.2.5 debianvm:/home/me# mount -t cifs //hostname.domain.tld/share /mnt/hostname.domain.tld/share --verbose -o user=SUBADDOMAIN.ADDOMAIN.DOMAIN.TLD/username mount.cifs kernel mount options: unc=//hostname.domain.tld\share,ip=10.212.15.53,domain=SUBADDOMAIN.ADDOMAIN.DOMAIN.TLD,ver=1,rw,user=username,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,pass=*********mount error 5 = Input/output error Refer to the mount.cifs(8) manual page (e.g.man mount.cifs) debianvm:/home/me# The word on the nets has not been very specific, and unfortunately it is almost always environment-specific. I receive no authentication errors. I have tried mount -t smbfs and mount -t cifs, along with smbmount and such. I get the same error before. I doubt it is a problem with DNS resolution, because logging shows the correct IP address. dmesg | tail -f no longer shows authentication errors when I format the domain and username accordingly. I have played a little with iocharset=utf8, file_mode, and dir_mode as described here. That did not help either. I have also tried ntlm and ntlmv2 assuming it might be a minimum auth method problem, but not forcing sec=ntlmv2 it can still authenticate without errors anymore. smbclient -L hostname.domain.tld -W SUBADDOMAIN.ADDOMAIN.DOMAIN.TLD -U username correctly lists all the shares and shows it as the following. Domain=[SUBADDOMAIN] OS=[Windows 5.0] Server=[Windows 2000 LAN Manager] Sharename Type Comment --------- ---- ------- IPC$ IPC Remote IPC ETC$ Disk Remote Administration C$ Disk Remote Administration Share Disk Connection to hostname.domain.tld failed (Error NT_STATUS_CONNECTION_REFUSED) NetBIOS over TCP disabled -- no workgroup available I find the last line intriguing/alarming. Does anyone have any pointers!? Maybe I misread the effin manual.

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