Discuss February 2013

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197 discussions

Selinux blocking bind access to named/data and slave directories
by Robert Moskowitz 15 Feb '13

15 Feb '13

I was getting permission errors (seen in /var/log/messages) in accessing these two directories within my chroot tree. I was pulling out what little hair I have, as the permissions were identical to those on my Centos 5.5 server. So I switched selinux into permissive mode and now I have /var/named/chroot/var/named/data/named.run and my ..../named/slave/ stubs. What is the selinux magic to allow bind to write here?

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Questions about software RAID, LVM.
by Robert Heller 15 Feb '13

15 Feb '13

I am planning to increase the disk space on my desktop system. It is running CentOS 5.9 w/XEN. I have two 160Gig 2.5" laptop (2.5") SATA drives in two slots of a 4-slot hot swap bay configured like this: Disk /dev/sda: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 125 1004031 fd Linux raid autodetect /dev/sda2 126 19457 155284290 fd Linux raid autodetect Disk /dev/sdb: 160.0 GB, 160041885696 bytes 255 heads, 63 sectors/track, 19457 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 * 1 125 1004031 fd Linux raid autodetect /dev/sdb2 126 19457 155284290 fd Linux raid autodetect sauron.deepsoft.com% cat /proc/mdstat Personalities : [raid1] md0 : active raid1 sdb1[1] sda1[0] 1003904 blocks [2/2] [UU] md1 : active raid1 sdb2[1] sda2[0] 155284224 blocks [2/2] [UU] unused devices: <none> That is I have two RAID1 arrays: a small (1Gig) one mounted as /boot and a larger 148Gig one that is a LVM Volume Group (which contains a pile of file systems, some for DOM0 and some that are for other VMs). What I plan on doing is getting a pair of 320Gig 2.5" (laptop) SATA disks and fail over the existing disks to this new pair. I believe I can then 'grow' the second RAID array to be like ~300Gig. My question is: what happens to the LVM Volume Group? Will it grow when the RAID array grows? Or should I leave /dev/md1 its current size and create a new RAID array and add this as a second PV and grow the Volume Group that way? The documentation is not clear as to what happens -- the VG is marked 'resisable'. sauron.deepsoft.com% sudo pvdisplay --- Physical volume --- PV Name /dev/md1 VG Name sauron PV Size 148.09 GB / not usable 768.00 KB Allocatable yes PE Size (KByte) 4096 Total PE 37911 Free PE 204 Allocated PE 37707 PV UUID ttB15B-3eWx-4ioj-TUvm-lAPM-z9rD-Prumee sauron.deepsoft.com% sudo vgdisplay --- Volume group --- VG Name sauron System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 65 VG Access read/write VG Status resizable MAX LV 0 Cur LV 17 Open LV 12 Max PV 0 Cur PV 1 Act PV 1 VG Size 148.09 GB PE Size 4.00 MB Total PE 37911 Alloc PE / Size 37707 / 147.29 GB Free PE / Size 204 / 816.00 MB VG UUID qG8gCf-3vou-7dp2-Ar0B-p8jz-eXZF-3vOONr -- Robert Heller -- 978-544-6933 / heller(a)deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments

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bind-chroot rpm only builds chroot tree?
by Robert Moskowitz 15 Feb '13

15 Feb '13

I just downloaded the bind-chroot rpm and looked into it with Archive manager (so I am lazy), and no files, just the chroot tree. I am assuming there is some script that Archive manager does not show, or I am just missing it, because the ROOTDIR= did get added to /etc/sysconfig/named (and the one in the bind rpm is without this line). Just interesting that if you chroot, you are expected to know that everything needs to be placed there. And they leave the /etc/named.conf there untouched. Seems they should remove this or make it a symlink? And what about /etc/rndc.key? your chrooted bind uses the /var/named/chroot/etc/rndc.key and rndc uses the /etc/rndc.key, or so it seems, so your rndc.key is left unprotected outside of the chroot jail? Am I missing something in the rndc setup with chrooted bind? I am not seeing any special instructions on this in the Redhat documentation.

2 2

chrooted bind -- addition to rsyslog.conf
by Robert Moskowitz 14 Feb '13

14 Feb '13

In /etc/sysconfig/named that gets installed along with bind-chroot there is a comment that basically says: Don't forget to add "$AddUnixListenSocket /var/named/chroot/dev/log" line to your /etc/rsyslog.conf file. All these little touches you need to find out about. But is there any order in rsyslog.conf? Do I just add this line to the end of it?

2 2

motherboard for cents 6.3
by Jerry Geis 14 Feb '13

14 Feb '13

Seems like overnight every motherboard that worked with linux has DROPPED off the face of the earth. Every motherboard I looked at is using the realtek 8111 chipset and a northbridge that is not supported. Example: GIGABYTE GA-970A-DS3, does not work with linux I tried disabling the onboard NIC and using a PCI-E intel card I always use and that would not work either. The north or south bridge is messing with the network card. The card asks for a PXE boot but after centos starts it can no longer find kickstart files, network is messed up. I was using Asus M5A88-M and they are no longer available. Anyway - anyone have a suggestion for and AMD motherboard that works with linux be great if it has onboard video (gaming is not needed), onboard network, SATA nothing super special just "working". Thanks, jerry

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Re: [CentOS] Really changing the hostname
by m.roth＠5-cent.us 14 Feb '13

14 Feb '13

Les Mikesell wrote: > On Thu, Feb 14, 2013 at 12:15 PM, Digimer <lists(a)alteeve.ca> wrote: >> On 02/14/2013 01:13 PM, Digimer wrote: >>> On 02/14/2013 01:11 PM, Robert Moskowitz wrote: >>>> I need to change the host name on a test server, and in the past when I used hostname to change the hostname, it did not seem to change it everywhere. >>>> >>>> I really don't want to do a rebuild just yet, but I have to feel confident that hostname is really changed (reboot is not too much of an issue). >>>> >>>> What is the recommened practice? Other than get it right the first time. >>> >>> To make the change permanent, edit /etc/ssyconfig/network and set the desired hostname after HOSTNAME=. >> >> Sorry, I typo'd that; >> >> # cat /etc/sysconfig/network >> NETWORKING=yes >> HOSTNAME=<your.new.hostname> > > This will get picked up on the next reboot. You will have to use the hostname command to make it take effect immediately, but some > applications only pick it up when they start so things like your login prompt won't change until the next login. Yep, what les says. If you don't reboot, things like syslog/rsyslog won't change it in messages. mark

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A question
by Bassem Sossan 14 Feb '13

14 Feb '13

I'm beginner with Linux... I have found a good resource, it's a book called "Beginning Red Hat Linux 9"... the centos's version that I've installed "centos 6"... Is this book may be compatible with Centos 6 ? Best regards...

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Error: headerRead failed: hdr blob
by Anumeha Prasad 14 Feb '13

14 Feb '13

Hi, I'm currently at CentOS 5.8 and am applying the latest OS updates available for 5.8. I'm seeing following error: error: bind-libs-9.3.6-20.P1.el5_8.6.x86_64.rpm: headerRead failed: hdr blob(48062): BAD, read returned 515 error: bind-libs-9.3.6-20.P1.el5_8.6.x86_64.rpm cannot be installed Similar error is seen for other rpms as well. Any idea? Thanks, Anumeha

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Re: [CentOS] Bind - built in root hints?
by Robert Moskowitz 14 Feb '13

14 Feb '13

On 02/14/2013 12:47 PM, Reindl Harald wrote: > > Am 14.02.2013 18:37, schrieb Robert Moskowitz: >> On 02/14/2013 12:29 PM, Paul Heinlein wrote: >>> On Thu, 14 Feb 2013, Robert Moskowitz wrote: >>> >>>> Over on the bind-users(a)lists.isc.org list, I am in a discussion about >>>> building the named.zone file, as Centos 6.3 does not provide it. It >>>> DOES provide a named.ca which is already old (wrt AAAA records) compared >>>> to the named.zone provided by internic. >>>> >>>> A few contributors have stated that now the hints are built into bind >>>> and you can see this with: >>>> >>>> strings /usr/local/sbin/named | grep A.ROOT-SERVERS.NET >>>> >>>> Well it looks like Centos has it at /usr/sbin/named and there are no >>>> such strings in there. Oh, these hints come from "lib/dns/rootns.c in >>>> the source code tree". >>>> >>>> So are the hints built in here? >>> See /var/named/named.ca (also visible in /var/named/chroot/var/named). >> Yes. I know about that. But as I said, the discussion is that this is >> no longer needed as the hints are now built into bind if no explicit >> hint is provided. I am asking if the above stub is included in the >> Redhat/Centos build. It does not seem so. > and even if - how would this be updated without the need > for a security fix since otherwise there are no updates > in RHEL Oh, I have checked and eventhough we are stuck at ver 9.8.2, we are current on security patches per the alerts listed by isc. So our 9.8.2 is NOT quite 9.8.2.... > > ftp://ftp.internic.net/domain/named.cache and update > /var/named/chroot/var/named/named.ca with it is the > way to go >

1 0

Installing SOGo on Centos 5
by Nikolaos Milas 14 Feb '13

14 Feb '13

Hello, I was following directions at: http://www.sogo.nu/english/support/faq/article/how-to-install-sogo-and-sope… to install SOGo on CentOS 5.9 and, noticing that among the dependencies is memcached and rpmforge includes a much more recent version than EPEL, I preferred rpmforge and therefore I set a higher priority for rpmforge repo (see below). [Note: I guess I could have left out epel in the first place, because I saw that no package was used from there, yet I thought I should follow the directions at the above page, which claim that epel should be enabled, just in case.] So I did: # yum --enablerepo=rpmforge,epel,rpmforge-extras,sogo-rhel5 install sogo sogo-devel sogo-debuginfo where I have the following priorities set: [base] priority=1 enabled=1 [updates] priority=1 enabled=1 [addons] priority=1 enabled=1 [extras] priority=5 enabled=1 [centosplus] priority=6 gpgcheck=1 enabled=0 [contrib] priority=15 [rpmforge] priority = 2 enabled = 0 [rpmforge-extras] priority = 2 enabled = 0 [epel] priority=5 enabled=0 [sogo-rhel5] enabled=0 priority=3 but I got: ... perl-AnyEvent-5.340-1.el5.rfx.x86_64 from rpmforge-extras has depsolving problems --> Missing Dependency: perl(Net::SSLeay) >= 1.33 is needed by package perl-AnyEvent-5.340-1.el5.rfx.x86_64 (rpmforge-extras) Error: Missing Dependency: perl(Net::SSLeay) >= 1.33 is needed by package perl-AnyEvent-5.340-1.el5.rfx.x86_64 (rpmforge-extras) However, it seems an RPM is available at rpmforge-extras (and is > 1.33): # yum --enablerepo=rpmforge,rpmforge-extras,rpmforge-testing info perl-Net-SSLeay ... Available Packages Name : perl-Net-SSLeay Arch : x86_64 Version : 1.36 Release : 1.el5.rfx Size : 334 k Repo : rpmforge-extras Summary : Net-SSLeay module for perl URL : http://search.cpan.org/dist/Net-SSLeay/ License : Artistic/GPL Description: Net-SSLeay module for perl. Why this package isn't being used during dep solving? Any ideas? Am I doing something wrong? Please advise. Thanks, Nick

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Discuss February 2013