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About DNS service
by Bassem Sossan 11 Feb '13

11 Feb '13

I've followed these commands successfully : - yum install bind bind-chroot bind-libs bind-utils - service named start When I used " host x.domain.com localhost" I got : using domain name server : name : localhost address : 172.0.0.1#53 host x.domain.com not found: 2(SERVFAIL) I've changed the ip settings from (Automatic dhcp to manual ) but with the same result... --

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Strange error pop up on my box
by Mark LaPierre 11 Feb '13

11 Feb '13

I'm getting a strange error pop up on my box: ############################# No more mirrors are available Required data could not be found on any of the configured software sources. There were no more download mirrors that could be tried. More details failure: repodata/filelists.sqlite.bz2 from elrepo: [Errno 256] No more mirrors to try. ############################# How to figure out what's causing this error? Linux mushroom.patch 2.6.32-279.22.1.el6.i686 #1 SMP Wed Feb 6 00:31:03 UTC 2013 i686 i686 i386 GNU/Linux Tail of dmesg: hub 1-0:1.0: unable to enumerate USB device on port 7 usb 1-7: new high speed USB device number 7 using ehci_hcd usb 1-7: New USB device found, idVendor=0781, idProduct=74d1 usb 1-7: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 1-7: Product: SanDisk Sansa Clip+ usb 1-7: Manufacturer: SanDisk usb 1-7: SerialNumber: 9C01F60D9554B7A80000000000000000 usb 1-7: configuration #1 chosen from 1 choice Initializing USB Mass Storage driver... scsi8 : SCSI emulation for USB Mass Storage devices usb-storage: device found at 7 usb-storage: waiting for device to settle before scanning usbcore: registered new interface driver usb-storage USB Mass Storage support registered. usb-storage: device scan complete scsi 8:0:0:0: Direct-Access SanDisk Sansa Clip+ 4GB v01. PQ: 0 ANSI: 0 scsi 8:0:0:1: Direct-Access SanDisk Sansa Clip+ 4GB v01. PQ: 0 ANSI: 0 sd 8:0:0:0: Attached scsi generic sg3 type 0 sd 8:0:0:1: Attached scsi generic sg4 type 0 sd 8:0:0:0: [sdc] 7683072 512-byte logical blocks: (3.93 GB/3.66 GiB) sd 8:0:0:0: [sdc] Write Protect is off sd 8:0:0:0: [sdc] Mode Sense: 04 00 00 00 sd 8:0:0:0: [sdc] Assuming drive cache: write through sd 8:0:0:0: [sdc] Assuming drive cache: write through sdc: sd 8:0:0:1: [sdd] 61497344 512-byte logical blocks: (31.4 GB/29.3 GiB) sd 8:0:0:0: [sdc] Assuming drive cache: write through sd 8:0:0:0: [sdc] Attached SCSI removable disk sd 8:0:0:1: [sdd] Write Protect is off sd 8:0:0:1: [sdd] Mode Sense: 04 00 00 00 sd 8:0:0:1: [sdd] Assuming drive cache: write through sd 8:0:0:1: [sdd] Assuming drive cache: write through sdd: sdd1 sd 8:0:0:1: [sdd] Assuming drive cache: write through sd 8:0:0:1: [sdd] Attached SCSI removable disk SELinux: initialized (dev sdc, type vfat), uses genfs_contexts SELinux: initialized (dev sdd1, type vfat), uses genfs_contexts -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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'Best' Platform
by Gene Poole 11 Feb '13

11 Feb '13

OK, What's the best CentOS platform for KVM? CentOS 5 or CentOS 6? TIA, Gene It's impossible for everything to be true at the same time.

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DNS caching is not working on CentOS
by Ed Morrison 10 Feb '13

10 Feb '13

Hi All: For whatever reason I can not get dns caching to work on any of my centos boxes. Running Centos 5 and 6. Any thoughts on why these will not run? The services start fine but when telling to perform a dig using itself as the resolver the queries fail (See below). Any help would be appreciated. Thanks, Ed [root@qmail ~]# ps -aux | grep pdns-recursor Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ root 7908 0.0 0.1 61208 568 pts/2 R+ 11:07 0:00 grep pdns-recursor [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# dig mx blm.gov @127.0.0.1 ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 <<>> mx blm.gov @127.0.0.1 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 4634 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;blm.gov. IN MX ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Fri Feb 8 11:08:04 2013 ;; MSG SIZE rcvd: 25 [root@qmail ~]# service pdns-recursor stop Stopping pdns-recursor: [ OK ] [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# service named start Starting named: [ OK ] [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# [root@qmail ~]# dig mx teichert.com @127.0.0.1 ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 <<>> mx teichert.com @127.0.0.1 ;; global options: printcmd ;; connection timed out; no servers could be reached [root@qmail ~]# * *[root@qmail ~]# dig mx teichert.com @192.168.1.6 ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 <<>> mx teichert.com @192.168.1.6 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28537 ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1 ;; QUESTION SECTION: ;teichert.com. IN MX ;; ANSWER SECTION: teichert.com. 3600 IN MX 10 mailgw4.ppt.questsys.com. teichert.com. 3600 IN MX 10 mailgw1.ppt.questsys.com. teichert.com. 3600 IN MX 10 mailgw2.ppt.questsys.com. teichert.com. 3600 IN MX 10 mailgw3.ppt.questsys.com. ;; ADDITIONAL SECTION: mailgw4.ppt.questsys.com. 3600 IN A 208.67.178.51 ;; Query time: 125 msec ;; SERVER: 192.168.1.6#53(192.168.1.6) ;; WHEN: Fri Feb 8 11:12:20 2013 ;; MSG SIZE rcvd: 155 [root@qmail ~]# [root@qmail ~]# dig mx blm.gov @192.168.1.6 ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.6 <<>> mx blm.gov @192.168.1.6 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 63254 ;; flags: qr aa; QUERY: 1, ANSWER: 2, AUTHORITY: 2, ADDITIONAL: 8 ;; QUESTION SECTION: ;blm.gov. IN MX ;; ANSWER SECTION: blm.gov. 300 IN MX 5 mail4.blm.gov. blm.gov. 300 IN MX 5 mail5.blm.gov. ;; AUTHORITY SECTION: blm.gov. 86400 IN NS blmdns2.blm.gov. blm.gov. 86400 IN NS blmdns1.blm.gov. ;; ADDITIONAL SECTION: mail4.blm.gov. 600 IN A 204.124.92.27 mail4.blm.gov. 600 IN AAAA 2001:49c8:8004:20fc::92:27 mail5.blm.gov. 600 IN A 204.124.92.28 mail5.blm.gov. 600 IN AAAA 2001:49c8:8004:20fc::92:28 blmdns1.blm.gov. 86400 IN A 204.124.92.8 blmdns1.blm.gov. 86400 IN AAAA 2001:49c8:8004:20fc::92:8 blmdns2.blm.gov. 86400 IN A 204.124.93.8 blmdns2.blm.gov. 86400 IN AAAA 2001:49c8:8004:20fc::93:8 ;; Query time: 78 msec ;; SERVER: 192.168.1.6#53(192.168.1.6) ;; WHEN: Fri Feb 8 11:13:01 2013 ;; MSG SIZE rcvd: 289* *

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How to limit upload bandwidth for a KVM guest?
by Neil Aggarwal 10 Feb '13

10 Feb '13

Hello: I am using a CentOS server as a KVM host using bridged networking for the guest servers. I would like to limit the bandwidth available to a guest. I tried using the tc command, but it is only limiting the download speed to the guest. Is there a way to limit the upload speed from the guests? Thanks, Neil -- Neil Aggarwal, (972) 834-1565 We lend money to investors to buy or refinance single family rent houses. No origination fees, quick approval, no credit check.

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CentOs 6 DHCP Server and virtual interface
by Grzegorz Sołtys 10 Feb '13

10 Feb '13

Hello All I have looking for any specific answer for one thing. I have a virtualized Server with only one physical interface eth0 (WAN). To run OpenVPN i need to use DHCP server. And here is the question: is there a chance to run DHCP server on eth0:0 interface? Or it is impossible ? Thanks in advance. -- /Best Regards *Greg*/ UML Professional (Cert #251574932)

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Re: [CentOS] LibreOffice 4.0 on Centos 5.9
by fred smith 10 Feb '13

10 Feb '13

On Sun, Feb 10, 2013 at 03:31:44PM +0100, Reindl Harald wrote: > > > Am 10.02.2013 15:11, schrieb fred smith: > > I've just installed LibreOffice 4.0.0.3 on my Centos 5.9 system. the > > previous version (3.4.x) was working fine. But 4.0.0.3 won't start up. > > When run from a terminal it prints: > > > > no suitable windowing system found, exiting. > > > > Is this yet another case of apps moving on beyond compatibility with > > the older components in C5? > > > > Or any hints for making it work? > > why are you using a LTS distribution to get the latest > packages run whch even are not in Fedora? because, well, it's my main home machine which among other things acts as a mail server for the domain, and I just hate having to go thru the pain of re-customizing a new installation to get it the way I want/like it. that's why I run a non-bleeding-edge distro. which, of course, then implies that some new software won't be compatible. Hence my question regarding compatibility. > > maybe at least CentOS 6 instead 5 would be a better base > for bleeding software I'm sure I'll upgrade it soon (for some values of "soon"), but in the meantime, still wondering if anyone else has made it work. -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- "Not everyone who says to me, 'Lord, Lord,' will enter the kingdom of heaven, but only he who does the will of my Father who is in heaven." ------------------------------ Matthew 7:21 (niv) -----------------------------

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Is this right? -- Centos 6 and RHEL 6 infrastrure for continuous update/upgrade
by Gelen James 10 Feb '13

10 Feb '13

Hi all, Both RHEL 6 and CentOS 6 can be installed from any minor releases DVDs: 6.0, 6.1, 6.2, 6.3, etc. And then got continuous upgrade/update with command 'yum -y upgrade' if repos are setup correct. But the repos infrastructure is different between the two. CentOS uses two repos: ..../centos/6/os/... repo and .../centos/6/updates/... The updates/ repo contains ONLY updated RPMs between minor releases. currently the updates/ contains updates after 6.3. and the /centos/6/os/ points to 6.3Base. Question #1: supposed I installed with Centos 6.2 last year, and let's say Centos 6.4 comes out two months later and I have not updated a single package since initial installation until Centos 6.4 comes out (I am way too lazy :) ), then How can I setup my yum config to not miss any updated packages? Should I put all three repos inside yum config? centos-6.2-kickstart-os centos-6-os centos-6-updates or the centos-6.2-kickstart-os is not needed at all -- the centos-6-os and cnetos-6-updates together contains all latest RPMS since 6.0 -- ? The first way may render yum to report warning of 'duplicate RPM group definitions' or similar. Questions #2: I've heard that RHEL 6 uses a different path, they seems to have only one big continuously updated base os/ repository. all the RPMs updated since 6.0 (include RPMs at the published day of RHEL 6.0) are contained in the repo. So only the one repo is in need to upgrade systems at any time. Is this true? and if so, any benefits go with it? Thanks. --Robinson

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SpamAssassin reporting help
by Jason T. Slack-Moehrle 10 Feb '13

10 Feb '13

Hello All, CentOS release 6.3 (Final) I am getting e-mails now where they are: Subject: Cron <root@www> /usr/share/spamassassin/sa-update.cron 2>&1 | tee -a /var/log/sa-update.log Body: http: GET http://daryl.dostech.ca/sa-update/asf/1387055.tar.gz request failed: 404 Not Found: <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <html><head> <title>404 Not Found</title> </head><body> <h1>Not Found</h1> <p>The requested URL /sa-update/asf/1387055.tar.gz was not found on this server.</p> <hr> <address>Apache/2.2.6 (Fedora) Server at daryl.dostech.ca Port 80</address> </body></html> Can anyone help me understand what is happening here? Are they trying to inject an http request, looking for a specific file? Or checking to see if I am running a piece of software that has vulnerabilities to exploit? -Jason

4 3

A problem
by Bassem Sossan 10 Feb '13

10 Feb '13

Hello every one I am a new user of CentOS, I have installed "CentOS-5.8-i386" as a virtual machine on VMware Workstation 9.0 for learning purposes. There is a frequented problems, when I want to use "Add/Remove software", I get this error message: "another application is currently running which is accessing software information." I have tried to know what's the problem from seaching, but, without any good answer.

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