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• Excessive CPU Utilization for Bind 9.8.1 `named` processes

  - by justinzane

  I just noticed that named is eating vast amounts of CPU time for a very small network with only a few domains. Can someone help me determine what is misconfigured, please? Or how to debug this. top top - 14:13:08 up 25 days, 14:16, 1 user, load average: 1.04, 1.04, 1.05 Tasks: 149 total, 1 running, 148 sleeping, 0 stopped, 0 zombie %Cpu(s): 17.3 us, 4.3 sy, 0.0 ni, 78.2 id, 0.1 wa, 0.0 hi, 0.0 si, 0.0 st KiB Mem: 2042776 total, 1347916 used, 694860 free, 249396 buffers KiB Swap: 3976080 total, 30552 used, 3945528 free, 574164 cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 17445 bind 20 0 244m 42m 3124 S 99.4 2.2 2345:03 named rndc stats +++ Statistics Dump +++ (1352931389) ++ Incoming Requests ++ 65869 QUERY ++ Incoming Queries ++ 31809 A 241 NS 3 CNAME 27455 SOA 276 PTR 123 MX 462 TXT 5400 AAAA 7 A6 1 DS 14 DNSKEY 15 SPF 55 AXFR 8 ANY ++ Outgoing Queries ++ [View: internal] 22206 A 509 NS 10 SOA 25 PTR 12 MX 524 TXT 4851 AAAA 62 DNSKEY 19 SPF 3157 DLV [View: external] 87 A 2 NS 80 AAAA 120 DNSKEY 7 DLV [View: _bind] ++ Name Server Statistics ++ 65869 IPv4 requests received 27670 requests with EDNS(0) received 112 TCP requests received 65652 responses sent 20 truncated responses sent 27670 responses with EDNS(0) sent 62920 queries resulted in successful answer 37117 queries resulted in authoritative answer 28482 queries resulted in non authoritative answer 7 queries resulted in referral answer 591 queries resulted in nxrrset 53 queries resulted in SERVFAIL 2081 queries resulted in NXDOMAIN 14530 queries caused recursion 162 duplicate queries received 55 requested transfers completed ++ Zone Maintenance Statistics ++ 109536 IPv4 notifies sent ++ Resolver Statistics ++ [Common] [View: internal] 29362 IPv4 queries sent 2013 IPv6 queries sent 28531 IPv4 responses received 4209 NXDOMAIN received 6 SERVFAIL received 31 FORMERR received 32 EDNS(0) query failures 3359 query retries 836 query timeouts 5348 IPv4 NS address fetches 3271 IPv6 NS address fetches 83 IPv4 NS address fetch failed 2779 IPv6 NS address fetch failed 17421 DNSSEC validation attempted 12731 DNSSEC validation succeeded 4690 DNSSEC NX validation succeeded 21104 queries with RTT 10-100ms 7418 queries with RTT 100-500ms 3 queries with RTT 500-800ms 1 queries with RTT 800-1600ms [View: external] 192 IPv4 queries sent 104 IPv6 queries sent 192 IPv4 responses received 2 NXDOMAIN received 104 query retries 44 IPv4 NS address fetches 44 IPv6 NS address fetches 1 IPv4 NS address fetch failed 1 IPv6 NS address fetch failed 4 DNSSEC validation attempted 3 DNSSEC validation succeeded 1 DNSSEC NX validation succeeded 152 queries with RTT 10-100ms 40 queries with RTT 100-500ms [View: _bind] ++ Cache DB RRsets ++ [View: internal (Cache: internal)] 2007 A 652 NS 131 CNAME 1 MX 32 TXT 421 AAAA 28 DS 244 RRSIG 110 NSEC 3 DNSKEY 2 !A 2 !TXT 89 !AAAA 2 !SPF 14 !DLV 148 NXDOMAIN [View: external (Cache: external)] 55 A 12 NS 34 AAAA 2 DS 10 RRSIG 1 DNSKEY [View: _bind (Cache: _bind)] ++ Socket I/O Statistics ++ 82958 UDP/IPv4 sockets opened 2118 UDP/IPv6 sockets opened 4 TCP/IPv4 sockets opened 1 TCP/IPv6 sockets opened 82956 UDP/IPv4 sockets closed 2117 UDP/IPv6 sockets closed 58 TCP/IPv4 sockets closed 15 UDP/IPv4 socket bind failures 2117 UDP/IPv6 socket connect failures 29554 UDP/IPv4 connections established 59 TCP/IPv4 connections accepted 2117 UDP/IPv6 send errors 5 UDP/IPv4 recv errors ++ Per Zone Query Statistics ++ --- Statistics Dump --- (1352931389)

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• Is it possible to do DNS-based ACLs on a Cisco ASA?

  - by pickles

  Short of using static IP addresses, is it possible to have a Cisco ASA use a DNS name rather than an IP address? For instance, if I want to limit a host in the DMZ to access only one particular web service, but that web service might be globally load balanced or using DynDNS or cloud, how can the ACL be expressed so that a fixed IP address isn't used and the admin doesn't have to keep opening and closing down IP addresses?

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• Remove a file on linux using the inode number

  - by WebDevHobo

  If you create a file on UNIX/linux with special chars, like touch \"la*, you can't remove it with rm "la*. You have to use the inode number(you can if you add the \ before the name, I know, but you'd have to guess as a user that it was used in the file creation). I checked the manpage for rm, but there's no metion of the inode number. Doing rm inodenumber doesn't work either. What is the command for this?

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• Virtual Box, Virtual Mac on Ubuntu Karmic ?

  - by Arkapravo

  Dear Friends I have been trying to virtualise Mac OS-X 10.5 Leopard (I used an iso) on my Ubuntu 9.10 Karmic Koala. Which has yielded no success ! ..... can OS-X be the guest OS in Virtual Box ? Has anyone done it, are there any legality issues Regards Arkapravo

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• Moving new drive volume out of /media

  - by nomoreflash

  I have the following filesystem: Filesystem Size Used Avail Use% Mounted on /dev/sda1 33G 2.7G 29G 9% / udev 1007M 232K 1007M 1% /dev none 1007M 244K 1007M 1% /dev/shm none 1007M 292K 1007M 1% /var/run none 1007M 0 1007M 0% /var/lock none 1007M 0 1007M 0% /lib/init/rw none 33G 2.7G 29G 9% /var/lib/ureadahead/debugfs /dev/sdb1 137G 69M 137G 1% /media/New Volume I want the /media/New Volume to become part of /. Does anyone know how I can do that without using gparted etc.?

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• How memory hungry is Jetty?

  - by Sanoj

  I am planning to use Jetty + MySQL on a small VPS with just 256 or 512MB memory, for serving a few websites. I haven't used Jetty before, only PHP on shared hosting. Is 256 or 512MB too limited for a Jetty server? or should I go with nginx + php + php-fpm setup instead? The websites will not have much traffic, they are just small sites.

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• how to force an illegal netmask in ubuntu

  - by user1064232

  I want to force a netmask on my Ubuntu machine. For example, I want 11.0.0.1 to get a netmask of 255.255.255.0 I tried editing /etc/network/interfaces and I forced the desired netmask, but as soon as I restarted the interfaces it changed it back to the default value. When I used ifconfig the netmask that I gave survived the interface restart but it was reset as soon as I rebooted the machine. Is there a way to force an "illegal" netmask on an interface?

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• Nagios vs Splunk

  - by dan_vitch

  I am looking to implement log tracking at my current company. After some research it seems Nagios and Splunk are the two best options. I was wondering if there is a consensus with which is better. I understand that Splunk can be quite pricey if the non-free version is used. That being said I can imagine the answer to my question will be "If you have the money use Splunk, if not use Nagios"

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• Verify burned CD image

  - by Brian

  Is there a way to verify a CD image (.iso) after it has been burned (and either the CD burning software does not have a "verify" option, or it was not used at the time of burning)? I tried ripping the CD using dd and comparing the md5sum of that image and the original, but they don't match. I didn't really expect them to, but I'm pretty sure this disc burned without errors (I just want to be sure since this is a master disc to be sent off to be duplicated).

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• What is reverse DNS?

  - by Pitto

  *.in-addr.arpa domains: lot of requests in my OpenDNS account. I know this should be normal and it's about reverse DNS. I've been reading here and there but still I can't really get how it works and why I get so much requests (higher number than www.google.com). I'd just need someone that, like Einstein suggested, could explain to me what this reverse dns is used for like he would explain it to his grandmother :) Thanks a lot!

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• Lefthand SAN questions.

  - by Gk

  I'm curious about Lefthand SAN solutions from HP. People from Dell have told me that Lefthand SAN's require at least two nodes and data must be mirroring between them so capacity is a half less compare to other SAN technology (e.g.Equal Logic). Is it true? Can a HP lefhand SAN be used as a stand-alone storage server with full RAID function (1, 10, 5)? TIA, -giobuon

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• Can No Longer Find Firefox Spell Check Personal Database in Firefox 3

  - by Volomike

  I have Ubuntu Linux 8.04 LTS with Firefox 3.6.3. Unfortunately it is super easy to accidentally click Add To Dictionary on a word you do not want added into one's personal dictionary used in Firefox. How do I remove the word 'intsead' out of it? I tried some tutorials on the web that said to find ~/.mozilla/*.default/persdict.dat, but I could not see one. As well, others have complained that this file no longer exists in Firefox 3.

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• Moving Windows XP from ICH10R RAID 5 to single disk using Linux [migrated]

  - by tudor

  A friend's machine running Windows XP refused to boot recently which is running 3 SATA disks on RAID 5 (which was previously upgraded from RAID 1 not by me). I have determined there to be a disk failure. The disks have been replaced many times in the past few years. I wish to backup the RAID5 partition before I try anything to fix it. The RAID chipset used is ICH10R/DO. So, I plugged in an extra IDE drive and an Ubuntu USB key and looked at the RAID. The partitioning is a mess, but I did find at least one degraded but working RAID array with two partitions, one 79GB and the other 86GB. Then I: 1) Partitioned my IDE disk using fdisk to have a partition of 80GB and bootable, and marked as NTFS. 2) dd the contents of the array to the partition 3) disconnected everything else 4) inserted a Windows XP CD and ran fixboot, fixmbr, and bootcfg. They all run ok and claim that they worked. (e.g. bootcfg detects the Windows partition, fixboot returns saying that it was written correctly.) However, I'm still getting an error like "DISK FAILURE, BOOT DISK NOT FOUND". I have tried running the GRUB rescue disk, which also runs ok, but won't boot into Windows. It just stops with a flashing cursor after chainloader +1, boot. One clue may be that the partitions appear to be wack. One disk has a 79GB RAID partition on a 500GB drive with a offset, the second disk has a 320GB RAID partition across the whole drive. Additionally, the BIOS lists the RAID size as being 149GB. I don't see how this works. How are they even assembling the array when the partitions are so different? I have also tried running the Windows XP automated repair tool, but that didn't work either. I'm presuming this is something simple. Perhaps Windows is attempting to boot into RAID and, upon not finding it, simply crashing? Perhaps the 79GB partitions offset means that it's looking into the disk by that much? Please help!! To clarify: I want to make the single IDE disk bootable with a copy of the array so that I can prove/disprove that it's just that Windows has become corrupted, and use windows tools to correct it before attempting the same thing on the RAID array. That way I have a working backup and can show the process I used to fix it.

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• Defragment a file or folder? Windows 7

  - by acidzombie24

  Is there a built-in way to defragment a folder? I am using VM Player so I would like my 3 GB disk image to be defragmented if possible. FYI my disk partition that the image lies in has 12 GB left and has roughly 90% of the disk used. I probably would not need a defrag but I would like to do it if it's possible.

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• force Macbook to connect via 802.11a?

  - by Joseph

  How do I force a Macbook in OSX to prefer 802.11a over 802.11g? I cannot shut off 802.11g on the WAP because it is used by other devices.

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• i dont see the option to save the partition table

  - by Bipin Neupane

  the issue is this Undo the CLEAN command on the portable hdd : DISKPART unfortunately at step no 10, i dont see the option to save the partition table.but there are options for: deeper search quit write a partition. wat should i do?plz help(i run testdrive 6.14) here is how this happened... I ran cmd then diskpart then selected the volume used 'CLEAN' command to clear the configuration (accidentally) does reinstalling my windows solve this ? will my hard drive work on other computers?

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• Where can I find great Windows XP themes?

  - by Jon

  For the last couple of years I have used the Zune theme for Windows XP. Once the background picture is removed it is a very classy look for XP. Is there a place on the web where I can find other Windows themes are available to download and try? Do you have any recommendations for individual themes to use?

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• How to restore a file system level copy of a PostgreSQL database (not dump) to a different PC

  - by user782224

  I am new to PostgreSQL. I have to recover a database which was running in widows XP machine. I have the zip folder of postgres. I have extracted postgres installation in a different PC and started a using initDB and created a new database, I was able to login, but I am not able to see any old tables. Would you please post the steps you have used to start server in another windows XP machine and how to recover tables and data in the old data folder?

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• Where is the "fix" button on Windows 7 Photo Viewer?

  - by Edward Tanguay

  When I click on a photo in Vista I get a fix button: When I click on a photo in Windows 7 I don't get a fix button: I used to use this fix button often to fix red-eye and alter the brightness quickly, and the auto-saving was so fast. If I can't get "Windows Photo Viewer" to do this, I'll have to http://www.irfanview.com again to do this.

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• Apple MacBook Pro Time Machine

  - by Daniel

  I just used Apples Time Machine Backups for the first time on my new laptop...I wonder if everything backed up ok, what is the best way to check?

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• .htaccess password not working for all files

  - by hapalibashi

  My .htaccess on Rackspace looks like this: AuthType Basic AuthName "Restricted Area" AuthUserFile /path-to-htdocs/.htpasswd Require valid-user Now I would expect this to password protect the whole directory, however, it only protects files with .php extension! What is wrong with it? Is it something in the default http.conf that I cannot override? The path used to .htpasswd is correct as it accepts the user/passwd in the case of .php

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• Migrate Exchange 2007 Mailbox between Servers

  - by AJ

  Hi all, I am using Outlook 2007 and Exchange 2007. I will need to migrate my Exchange mailbox from one server to another (different organizations), including all email, contacts, and calendar. I have read that there are ways to do this on the server side, but what methods could be used by me to facilitate this on my end? Is there way to back up my mailbox data so that it could be "imported" into the target mailbox? Thanks!

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• How to document mail setup after hand-over.

  - by BradyKelly

  I've just moved a client's email services over from my host to Google Apps. I would like to hand over a document providing all they (or their agent) need should I not be available etc. How are such documents normally structured, and what level of detail should they contain? I know user names and passwords are essential, and instructions on how to manage domains on Google Apps are over the top, but what is a commonly used middle ground?

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• How can i recompile the python 2.7 with enable shared option

  - by user31

  I installed 2.7 with yum. But i didn't used enable shared option so i am not to run mod_wsgi with djnago. Now i want to recompile with enable shared option. Is there any esay way to do that Although mod_wsgi will still work when compiled against a version of Python which only provides a static library, you are highly encouraged to ensure that your Python installation has been configured and compiled with the '--enable-shared' option to enable the production and use of a shared library for Python. http://code.google.com/p/modwsgi/wiki/InstallationIssues

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• RabbitMQ and persistence (blocking writes?)

  - by daharon

  I want to create a RabbitMQ server on a virtual machine (VMware) to be used in production. It will contain persistent queues. I'm wondering if it is a bad idea to store the server on a NAS that's accessed over NFS. Basically my questions are: Will RabbitMQ's writes be blocking? Will the entire queue's operation halt on a write? How much performance degradation should I expect when persisting over NFS?

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