Discuss July 2011

discuss@lists.centos.org

315 participants
289 discussions

CentOS 6 system-config-bind missing?
by Emmett Culley 04 Aug '11

04 Aug '11

First system-config-network is not part of CentOS/RHEL 6, now I don't see system-config-bind either. Is there an alternative (GUI) way to manage the bind DNS server? Emmett

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EL6: Hard Disk upgrade howto?
by Benjamin Smith 03 Aug '11

03 Aug '11

I have a tested copy of EL6 that I would like to duplicate to a number of similar servers, but can't seem to find a sane howto on the subject. TLDP's "Hard disk upgrade howto" is embarrassingly antiquated: when's the last time you saw LILO? What's the recommended procedure for doing an HDD copy/upgrade from one disk to another? Is there a nice, detailed howto that explains this in detail? My set up is pretty straight forward. My partitions are all set up as simple partitions, with UUID's in /etc/fstab. I'm not using LVM or RAID. Any ideas? -Ben -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

7 16

Sudo #includedir function ignored CentOS 6
by Trey Dockendorf 02 Aug '11

02 Aug '11

I am unable to get the #includedir function to work with sudo. This works just fine on all my CentOS 5.6 servers, but on 6 it is being ignored. I have this line in the file /etc/sudoers.d/zabbix-puppet zabbix ALL=NOPASSWD: /var/lib/zabbix/bin/start_puppet However sudo still requires a password. If I put that same line into /etc/sudoers file , there is no password prompt. At the end of my sudoers file I have this line #includedir "/etc/sudoers.d" It seems that line is being ignored. The permissions on the file in that directory are 0440. Any ideas would be greatly appreciated. Thanks - Trey

4 6

Good for a chuckle
by R P Herrold 02 Aug '11

02 Aug '11

I see in my overnight email spool: https://bugzilla.redhat.com/show_bug.cgi?id=726872 I am amused because this kind of request comes up time and time again with respect the package management system It is technically _possible_ to attain this kind of rollbacks, in some tightly controlled environments [something like cell phone tower control computer applications, where there are essentially NO end users in the environment and the computer is acting like an embedded controller], but in the general case with many diverse and randomly maintained packages, each with their own assumptions as to how to maintain their run-time environments, it is 'not gonna happen'' (TM) After deployment, User A will use postgresql or perhaps mysql to build a LAMP system. Updates will happen, and either pgsql or mysql will need to rebuild indices on the database store, because there has been a non-compatible bugfix, that is not backward compatible, or something to that effect. Because the database software authors have been burned, they have written documentation cautioning to take and test database backup dumps that may be reloaded, and and indeed also conversion testing scripts that actually attempt to do it 'behind the scenes'. The scripts are robust and will carp and bail if they run out of space, or otherwise fail other sanity checks. But there is a design decision: is one 'polite' as to filesystem use and pollution, and NOT leave that intermediate dump behind; or is one paranoid and save and age several backups, both for this conversion and generally, because you (the database software author) have been berated by your use community for THEIR failure not to read the documentation and to heed the warning to take and test backups [Those reading this will note certain parallels to rants by low-formality 'admins' who appear here from time to time -- just a random co-incidence, I am sure] Then RPM has the reasonable design feature, quite intentionally, of providing access to the full, Turing complete which a shell prompt offers. Anconda does as well. THAT can provide for dynamic repartitioning, filesystem type conversions, and so on ... How does one 'roll back' from such one-way operations? The answer of course, is one cannot without 'out of the installation' backups So I am amused that a person sees the RPM hammer, and thinks every problem looks like a nail, rather than, say, TESTING all variants, so there IS NO NEED for such a 'roll-back' capability; or running virtual instances so a 'prior backup' can be taken, the upgrade performed, and if problems show up -- no problem, just start the prior backup and the undesired 'upgrade' does not hurt at all -- Russ herrold

5 4

No debuginfo for Centos 6?
by Dennis Jacobfeuerborn 02 Aug '11

02 Aug '11

Hi, I'm trying to use oprofile to debug a problem with idle virtual machines eating 10% cpu but apparently the debuginfo packages for Centos 6 do not exist and so I cannot get any useful information from the kernel. Is there some way to at least get the kernel-debuginfo from somewhere? Regards, Dennis

2 4

Iptables - flooding console
by cbulist＠gmail.com 01 Aug '11

01 Aug '11

Hi, We are trying to track some specific rules using LOG as target. Everything is working well but the problem is that iptables is flooding the console with LOG messages. We tried --log level 4 on iptables rules but it didn't work. We fixed the problem changing KLOGD_OPTIONS value in /etc/sysconfig/syslog to: KLOG_OPTIONS="-c 4" Is it the best option or we are missing something? Thanks in advance

5 8

high performance open source DHCP solution?
by Rogelio 01 Aug '11

01 Aug '11

The free DHCP solution, ISC, seems to be having scaling issues (i.e. handling only about 200 DHCPDISCOVER and 20 DHCPRENEW requests), and I was wondering if anyone had any open source suggestions of solutions that could scale much better? (Ideally, I could find a free version of a solution like Nominum, but I know that's asking for much.) Anyone have any suggestions? -- Also on LinkedIn? Feel free to connect if you too are an open networker: scubacuda(a)gmail.com

7 7

Intel HD graphics & CentOS 6: Error inserting i915
by Timo Neuvonen 01 Aug '11

01 Aug '11

I installed CentOS 6 to Acer 7750 laptop, which has Intel Sandybridge CPU ( i5-2410M) with integrated Intel HD Graphics 3000. By default X won't use intel driver for graphics, but vesa instead, which limits the resolution to 1024x768. I tried to force the use of intel driver by writing a xorg.cof file, but then X doesn't start at all. I updated libdrm and xorg-x11-drv-intel from elrepo. This intel driver 2.15 is newer than in Fedora 15 Live CD, and with it the graphics work properly. The problem seems to be related with i915 kernel module: (==) Using config file: "/etc/X11/xorg.conf" FATAL: Error inserting i915 (/lib/modules/2.6.32-71.29.1.el6.x86_64/kernel/drivers/gpu/drm/i915/i915.ko): No such device (EE) No devices detected. I've tried kernels from CentOS Base repo, and CentOS-Plus repo too, no difference. I found a similar old bugzilla entry: https://bugzilla.redhat.com/show_bug.cgi?id=495524 Somewhere (don't find the source any more) I saw that i915 would need intel_agp module, and that would be the problem. This goes a little bit beyond my knowledge level. Maybe this has been fixed somewhere about a year ago: https://patchwork.kernel.org/patch/120293/ But is this patch something that is still missing from latest CentOS kernels? If someone has a solution for this, please advice. Regards, Timo

5 7

perl-Nagios-Plugin-0.35-1.el5.rf.noarch from rpmforge: dependency problem
by Dirk 31 Jul '11

31 Jul '11

Hi folks, I hope this is the right mailing list to ask since on the repoforge website there is no list or contact information. I have a problem with updating the perl-Nagios-Plugin package. I have installed perl-Nagios-Plugin-0.33-1.el6.rf.noarch, and running yum update leads to: > Error: Package: perl-Nagios-Plugin-0.35-1.el6.rf.noarch (rpmforge) > Requires: /usr/local/bin/perl > You could try using --skip-broken to work around the problem > You could try running: rpm -Va --nofiles --nodigest > I do not see how to get this fixed; enabling rpmforge-extras and rpmforge-testing did not work (no /usr/local/bin/perl there), and symlinking /usr/local/bin/perl to stanard perl did not work either. I run into this problem on CentOS5 and 6, the latter both in 32bit and 64bit. And I do not find any hint on Google. Am I the only one to use this package? :-) Any hint or help is appreciated. Dirk

3 3

www.mydomain.org and mydomain.org should resolve to the same IP
by Rob Kampen 31 Jul '11

31 Jul '11

Hi list, I am having a debate with one of my clients where I administer their domain and storage server but the website is hosted by godaddy. thus www.mydomain.org goes to one of godaddy's servers but the mydomain.org and mail.mydomain.org and ns1.mydomain.org all go elsewhere. My website designer has been convinced by the godaddy web design team that we should <quote> Again, the standard practice in the industry is for name.org and www.name.org to be "tied" together. The primary domain is mydomain.org and you have it while the church's web site is using the sub domain, www.mydomain.org. I have been on the phone with tech support and they say that out of close to 1 million web site hosting customers, NOBODY purposely separates the two. We will run into these issues every time someone tries to create a form, new navigation and potentially new pages, according to Godaddy. PLEASE create a sub-domain for your server that is not mydomain.org and, transfer mydomain.org into the new godaddy account we just set up for the new web site. </quote> I have never heard this before, and have not had any problems with any other clients until this client hooked up with godaddy for their website. Anyone out there that can shed some light on this? Do most domains keep the Top Level Domain (TLD) the same as the www.TLD? TIA Rob

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Discuss July 2011