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by Jason S-M 01 Feb '11

01 Feb '11

Hi All, On one of my servers I have a personal account and root. I disable root for ssh logins and run ssh on an alternative port. When 'scp'ing files I usually scp them up, then ssh in 'su' root and move them to /var/www/html. I can sftp I realize, but what group can I add my personal account to, but not root, so I can sftp in and put the files in /var/www/html? Secondarily /var/www/html/<my website> is owned by root:root, can I change this to something else so my sftp'ing is easier? apache:apache as owner? -Jason

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Re: [CentOS] RAID support in kernel?
by Les Bell 31 Jan '11

31 Jan '11

Kenni Lund <kenni(a)kelu.dk> wrote: >> Fakeraid is a proprietary software RAID solution, so if your motherboard suddently decides to die, how will you then get access to your data? << Obviously, you restore it from a backup. RAID is not a substitute for backups. Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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zfs experience
by ann kok 31 Jan '11

31 Jan '11

Hi Anyone is trying zfs in linux. Any experience can be shared Thank you

6 8

Building RPMs for CentOS
by Marcos Lois Bermúdez 31 Jan '11

31 Jan '11

Hi. Some times i need to build packages for CentOS, the major requeriment is build some missing module or package newer version required to run some sotware. I setup a mock build enviroment to compile packages, all is working as expected, but i enconter problem to share this work in a source repo, i try to figure out how other people are making this, in CentOS i have no idea on which source repo are kept the package metadata, specs and patches, but in other repos, epel for example it only versions specs and patches, all binary files are downloaded in the time that the srpms are built to send to mock (koji in their case), fedora is swiching from a Makefile per package to a fedpkg tool to work with package sources. I see that a friend will be spectool, and some of scripting i can get a build system from source version control, but i think that this already is made, so i'm don't want to reinvent the well, i prefer help other people in make more robust system. There is a currently model for package metadata store and common task work? Regards.

1 0

Re: [CentOS] CentOS and Dell MD3200i / MD3220i iSCSI w/ multipath -- slightly OT
by Rajagopal Swaminathan 31 Jan '11

31 Jan '11

Greetings, On 1/22/11, Edward Morbius <dredmorbius(a)gmail.com> wrote: > CentOS is not a Dell-supported configuration, and we've had little helpful > advice from Dell. There's been some amount of FUD in that Dell don't seem > to know what Dell's own software installation (the md3 > > Dell doesn't seem to have much OS experience generally. > +1 It is to be expected from Dell as they outsource support to non-"equal opportunity" employers who do not hire support agents beond 40 years of age (per HR). Above fact. below imho Now, experience often helps reach the source of the problem much faster that fast-talking street-smart agents who proliferated. It is sad that IT industry treats its early community members so callously. I don't know but Dell seems to be headed the Sun way -- open for takeover by HP/IBM Above imho. Regards, Rajagopal

3 6

RAID support in kernel?
by Michael Klinosky 31 Jan '11

31 Jan '11

Hello. I'm setting up a computer that will run 'CentOS 6 server'. The MB is an Asus with a hw raid controller (Promise PDC-20276), which I want to use in RAID-1 mode. I noted (from a MB website) that it also needs a driver - which is probably why it's called a 'fakeraid'. So, I've been trying to determine if any recent kernels support this chip. Using google.com/linux, I found lots of hits dating about 2002 - 04, and referencing the 2.4 kernel (which had the driver compiled into it). But, nothing newer. I checked kernel.org and kernelnewbies.org - I see that raid-1 is supported. But, I can't find any reference to this chip. How can I find out what drivers are compiled into a given kernel? Or, basically what hardware a given kernel supports?

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Re: [CentOS] Ext4 on CentOS 5.5 x64
by cpolish＠surewest.net 31 Jan '11

31 Jan '11

Sorin Srbu wrote: <snip> > Anyway, I get a bad block message when running fsck, and am not sure > whether this is a interface problem between the chair and the monitor or > something with the tech preview. <snip> Having just live through this issue, I recommend you run the extended (long) SMART test on all your drives and check the reports. The relevant package to install is smartmontools. It's worth investing a little time in setting up the package. I ended up with this incantation in /etc/smartd.conf : /dev/hda -T normal -p -a -o on -S on -s (S/../.././02|L/../../6/03) -m root@localhost To execute the extended tests (doesn't mess with your data): # smartctl --test=long /dev/hda To view the test results about 80 minutes later: # smartctl --log=selftest /dev/hda and so on. -- Charles Polisher

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RHEL-6 vs. CentOS-5.5 (was: Static assignment of SCSI device names?)
by Chuck Munro 30 Jan '11

30 Jan '11

Hello list members, My adventure into udev rules has taken an interesting turn. I did discover a stupid error in the way I was attempting to assign static disk device names on CentOS-5.5, so that's out of the way. But in the process of exploring, I installed a trial copy of RHEL-6 on the new machine to see if anything had changed (since I intend this box to run CentOS-6 anyway). Lots of differences, and it's obvious that RedHat does things a bit differently here and there. My focus has been on figuring out how best to solve my udev challenge, and I found that tools like 'scsi_id' and udev admin/test commands have changed. The udev rules themselves seem to be the same. Regarding networking, all of my 'ifcfg-*' files from CentOS-5.5 worked well, including bridging for KVM. Of course, one of the first things I did was remove that atrocious NetworkManager package ... it needs to be rewritten to make it a *lot* more intuitive. RedHat uses it during installation to manually configure the NICs, which I think is a mistake. I much prefer the way CentOS anaconda has done it so far, as a separate install menu form. The performance of the machine seemed to be better with the newer kernel, which is encouraging. I suspect we can look forward to a number of improvements. I've just managed to scratch the surface. I do expect there may be a few challenges for those of us upgrading a system from 5.x to 6, where some user-written admin scripts could break depending on the system commands they use. I look forward to CentOS-6 and all the goodies we can expect, and I'm quite happy to wait until the CentOS crew does their thing before releasing it ... they deserve a lot of credit for doing a thorough job all these years. Chuck

4 3

py-yaml complaints from yum
by Tim Dunphy 30 Jan '11

30 Jan '11

hello list!! I'm having a curious issue.. if I type yum update -y the system complains of a PyYAML dependency: --> Finished Dependency Resolution PyYAML-3.08-4.el5.x86_64 from installed has depsolving problems --> Missing Dependency: libyaml-0.so.1()(64bit) is needed by package PyYAML-3.08-4.el5.x86_64 (installed) Error: Missing Dependency: libyaml-0.so.1()(64bit) is needed by package PyYAML-3.08-4.el5.x86_64 (installed) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest if I do yum whatprovides "*/libyaml-0.so.1" this is what I get back: [root@VIRTCENT14:~] #yum whatprovides "*/libyaml-0.so.1" Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * addons: mirror.cogentco.com * base: hpc.arc.georgetown.edu * centosplus: mirror.steadfast.net * contrib: hpc.arc.georgetown.edu * epel: mirror.seas.harvard.edu * extras: mirror.atlanticmetro.net * remi: rpms.famillecollet.com * rpmforge: fr2.rpmfind.net * updates: mirror.ash.fastserv.com libyaml-0.1.2-3.el5.i386 : YAML 1.1 parser and emitter written in C Repo : epel Matched from: Filename : /usr/lib/libyaml-0.so.1 libyaml-0.1.2-3.el5.x86_64 : YAML 1.1 parser and emitter written in C Repo : epel Matched from: Filename : /usr/lib64/libyaml-0.so.1 libyaml-0.1.2-3.el5.x86_64 : YAML 1.1 parser and emitter written in C Repo : installed Matched from: Filename : /usr/lib64/libyaml-0.so.1 but it looks like /usr/lib64/libyaml-0.so.1 is already installed on this system. [root@VIRTCENT14:~] #ls -l /usr/lib64/libyaml-0.so.1 lrwxrwxrwx 1 root root 18 Dec 19 22:46 /usr/lib64/libyaml-0.so.1 -> libyaml-0.so.1.1.0 So what's yum complaining about here, and may I have some advice on how to correct this error? thanks CentOS list! You have a history of awesomeness which I respect. -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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Amazon EC2 - building a minimal centOS ebs bootable image
by Sanjay Arora 29 Jan '11

29 Jan '11

Hello Looking to build CentOS based micro EC2 instance bootable from Amazon EBS. Want that the image be minimal, so that I can add only the rpms I want. Despite looking could not find a way to import a CentOS image from scratch or an existing minimal CentOS image that is bootable from EBS. My server must must persist, as I cannot handle issues with a dynamic server, so I want to use a server that can boot from EBS. Am a EC2 newbie and a follow the instructions kind of a Sys Admin ;-) Please guide me to links, howtos and give experienced advice, in general. With best regards. Sanjay.

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