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can I use 2 HDD's with the same LVM labels at the same time?
by Rudi Ahlers 10 Nov '08

10 Nov '08

Hi all, I need to add a drive with the same LVM labels (i.e. system) to a machine with a drive with the same label. How can I access the data on both drive's LVM partitions at the same time? -- Kind Regards Rudi Ahlers

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Hiding Files in Samba
by Vandaman 10 Nov '08

10 Nov '08

I may need a strong shot of coffee but I though putting "hide files = /~*/" as follows in the samba config file would hide files with a tilde. [homes] comment = Home Directories browseable = no writable = yes hide files = /~*/ Unfortunately after restarting the server the files are still visible. Regards, Vandaman.

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Re: [CentOS] re: HA Storage
by Ross Walker 10 Nov '08

10 Nov '08

On Nov 9, 2008, at 11:38 AM, Stephen Harris wrote: > On Sun, Nov 09, 2008 at 08:30:42AM -0800, nate wrote: >> Stephen Harris wrote: >> >>> ZFS is really nice. If VMware was supported on Solaris 86 then I >>> would have built my own home server with Solaris rather than CentOS. >>> (Although I'm not using VMware on that machine, at present; merely >>> UserModeLinux for my protected instances). But CentOS is handling >>> my >>> 5*1Tbyte RAID5 OK for now :-) >> >> You know the inverse is true right? Solaris is supported on >> VMWare ESX(i). Though SATA disks are not officially supported >> by the VMFS file system in 3.x. > > I wanted Solaris as the Host OS so it could natively manage my disks > via ZFS. Making it a guest would be pointless. Underneath that I > would > run a couple of smaller Linux instances (eg for internet facing > services), > maybe a Windows instance and so on. You know you may not find VMware server for Solaris, but there is always Xen or VirtualBox. -Ross

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Appliance platform
by Ted Miller 10 Nov '08

10 Nov '08

I have a project that I need some hardware pointers for. I need to build some Centos "appliances" (dedicated boxes to do one thing only). Target cost is under $250/box. Need: OS: Centos 5 Hardware Cost: less than $250 USD USB: at least 2 (not including keyboard) Memory: at least 128K Storage: prefer flash (USB stick OK) Network: 10 Base T Want: Height: less than 4" (fit on a 3RU shelf) Width: less than 10" (slide keyboard beside CPU on rack shelf)\ Display: 80x25 (or better) LCD on front of case (comes that way or I mount it there) Network: 2 x 10 Base T Application (in case anyone cares): Move better-than-FM quality audio across a leased audio circuit with delay under 10 seconds. No Internet exposure. Obviously one box is required at each end, and the encoding box works much harder than the decoding box. Software to run will probably be Ices -> Icecast -> network -> mplayer. Will be using USB audio interfaces, probably something like the M-Audio Fast Track Pro. Because of the nature of the application, once it is booted up the only disk activity is occasional logging when there is a problem with the connection. Any advice, web links, battle scars, or advice gladly accepted. Ted Miller Indiana, USA

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only backup selected files
by chloe K 09 Nov '08

09 Nov '08

Hi I have number of selected files to backup and it is also in different folders How can I make it easy? eg: tar zcvf select-file.tar.gz from selected file or tar zcvf select-file.tar.gz (from selected files in file.txt)? Thank you for your help --------------------------------- Now with a new friend-happy design! Try the new Yahoo! Canada Messenger

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re: HA Storage
by Rajagopal Swaminathan 09 Nov '08

09 Nov '08

Greetings, on this matter, Sunfire x4150 a 1U machine with 2xcpu sockets, "eight" drive bays, 64 GB expandability, 4 NIC packs quite a punch for its size. I don't think I've ever seen such power in such a small package Regards Rajagopal

4 4

centralized logs server and also storing the logs on the local server
by ankush grover 09 Nov '08

09 Nov '08

Hi Friends, I am running most of my company's Linux Servers on Centos 4.x/5.x 32 and 64-bit. I am now trying to configure a centralized logging server where logs of all the linux servers will be stored and also I want to store all the logs on the local server aka means logs will be sent to the central log server but also will be stored on the local server. The reason for storing the logs locally is because we have offices in different cities and few more offices are coming up and it is good to store the logs locally so that when the connectivity b/w the offices break the logs does not get lost. There are lots of configuration available on internet which tells how to send the logs to the centralized log server but I did not find any configuration where logs can be stored locally as well as send to the centralized log. Moreover I am also looking for logs analyzer tool which can generate reports separately for each host for ex there are logs of 15 servers are stored on the server and this logs analyzer tool should generate reports separately for each host. Thanks & Regards Ankush

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What happened to the CentOS Docs?
by Vandaman 09 Nov '08

09 Nov '08

I don't log into the CentOS forum, CentOS chat but I don't know why the docs were removed from http://mirror.centos.org/centos/4/docs/ I also had a look on the CentOS forum and the forum FAQ still links to the above location. Example http://mirror.centos.org/centos/4/docs/html/rhel-rg-en-4/s1-grub-installing… Not everyone uses IRC/Forum/Developers mailing list so for the benefit of others, what happened to the docs? Regards, Vandaman.

2 4

Tired of Fedora, shopping for a new OS. Upgrade from F8 ? CentOS kernel versions ?
by Linuxguy123 09 Nov '08

09 Nov '08

I've been a RH/Fedora guy since the RH8 days. When Fedora came along, I moved to it, but its been a bit painful beta testing software all the time. I ran Ubuntu for a while, but I found their package management to be difficult... I do a lot of technical work, development and loading and building special stuff. I much prefer RPMs over other methods of package distribution. Presently I'm miffed with the Fedora community. Back in July I blindly upgraded to F9 because I was in need of a few things that it shipped with. Little did I know it contained KDE4 or more precisely a rough, unfinished version of KDE4. I stuck with it, however, and upgraded to KDE4.1 and finally to KDE 4.1.2. About a month ago I received a new laptop. Being it was a new machine, I did a fresh install of F8 on it, thus dumping KDE4. While all has been well since then, I am watching the KDE4 release schedule and noting that I don't think KDE4 is going to be done, ie polished and ready to use until late spring, 2009. I've also noted the Fedora is going to abandon support for F8 before Christmas. As F9 contains a very bleeding edge version of KDE4, I am loathe to upgrade to it. Thus I am shopping for a new OS to solve this problem and the problem of continually being a beta tester if one is an up to date Fedora user. With Fedora it seems that one just gets a new installation working nicely when support for it is dropped and the cycle starts all over again. I'd like to get away from that. So... questions. a) I am running F8 right now. Most, but not all, of the package versions seem about the same as CentOS 5.2. Kernels are the notable exception to this rule. Could I forego F8 updates for a while, to leave CentOS catch up, and then add the CentOS repository to my repo list and "update" to the CentOS via yum ? b) One of the things I really need are up to date (bleeding edge) kernels. For example, F8 has 2.6.26 kernels, whereas CentOS appears to be running 2.6.18 kernels. I do know how to build my own kernels, but that is a pain. Does someone keep a separate repository that has more modern kernels ? Can yum be configured to use only specific packages (ie kernels) from a specific repository ? c) Is there any problem with using the livna repository for various things that I might need ? I notice that they don't have a CentOS specific repository, but would it be OK to point to F8 or so and use those RPMs ? Thanks I'm listening if you have any other comments or advice on my situation. LG

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A broader CentOS information sharing issue? [ Was What's an Enterprise class OS ]
by William L. Maltby 08 Nov '08

08 Nov '08

On Sat, 2008-11-08 at 08:55 -0800, Akemi Yagi wrote: > <snip> > Many of you on this mailing list may still remember the longish thread > regarding the writing of a HowTo rpmbuild article. At that time, I > quoted several forum posts to demonstrate the fact that we repeatedly > *type* the same answer each time a new person asks the same question. > This was because there wasn't really a good single point of reference > we could use and the best way of responding was to write the whole > thing out (again and again). > > At lease for me, the most propelling reason for creating a new article > is to make things easier for people helping new users rather than to > expect new users to read it. > > And the article/subject Ned is proposing is indeed worth writing. > With so many people switching from Fedora and other distros, we have > been having so many occasions in which we should explain what an > enterprise class OS (thus CentOS) is about. Agree 100%. I just want to mention that the OP, combined with your post, really opens a whole can of worms, when considered in the light of things such as what you mention and the assumption that the user base is growing. I thought it might be useful to the project to think about this. If not, just ignore this please. In projects I've seen in the past, the addressing of things such as _effective_ FAQs, proper indoctrination of new users (in ML, fora and chat rooms) into the _basics_ of the project are usually delayed until the swelling volume forces action to be taken just for sanity/survival of the "hittest". :-) Although these things weren't ignored, they are often considered, effectively, in isolation. Consideration or estimations of user-base constituency, user-base size, project growth, degree of confusion experienced by new users, ... often miss the mark. The folks who try to actively help get hit the hardest with repetitive questions. the most frequent symptom of the need for a re-examination. Often these don't make it into a FAQ or other standard frequently referenced place because of a lack of a FAQ coordinator or maintainer or a lack of effective support from the rest of the group in proposing new potential FAQ entries. Further, the new user often doesn't review the FAQ (or other resources) until someone gets really ticked and says something like "It's in the FAQ - GO READ IT". Some mild coercion when a user signs up for an ML, forum or chat room could help alleviate that situation. If the FAQ is well maintained, organized, supported by appropriate proposals, and somewhat forcefully introduced to new sign-ups, ML and fora support folks might see reduced repetition and could also use it, via a quick inclusion of a URL, to expeditiously answer some of the oft seen issues. However, this is an isolated stab at a larger problem, IMO. The number of informative articles on the wiki can be expected to continue to grow. There are also many links in the list archives that reference outside resources, such as blogs or other web sites, that answer many questions. This list has already entertained a thread that proposes some "consolidation" of activity in the fora and mailing lists. Unresolved, IIRC. The basic issue here is that in a project with a user base as diverse as CentOS (regardless of a strong skew of the profiles towards one or another group, like administrators or programmers, or ...), there are too many portals to obtaining information: Planet/People/.../FAQ/Forum/ML/homer page "Information" drop-down, ... Combined with search engines, all this conspires to overwhelm a new user, especially of the user is in a time-constrained environment where a quick resolution is needed. If my sense of the growing popularity is correct, I suggest that now is a good time to start a thorough discussion about the information infrastructure and ways of ... "encouraging" new users to use the infrastructure _and_ reduce the number of possible paths that exist to finding needed information. A combination of "single path" access to all these information resources, a new sign-up "introduction" to this path, a dedicated support team to keep the components current and a commitment of all those who participate to constantly propose (and generate/maintain where possible) these components should be considered. If something results from this thread, I volunteer to help as I can, although most of you realize that my skills are limited and dated. But I still can learn relatively quickly. It's just that I seem to fit the profile I read long ago: younger folks grasp, retain and more quickly recall details while older folks tend to grasp, integrate and apply concepts more quickly without being as nimble about the details of things. > > Akemi > <snip sig stuff> -- Bill

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