- Discuss - lists.centos.org

Desktop Supercomputer
by Rajagopal Swaminathan 19 Jul '10

19 Jul '10

Greetings, Have been looking at the specs of Boston Venom T4000. Boston Venom T4000 http://www.bostonindia.in/products/bos-t4000.aspx I could not figure out the lowest base price points, HA features and KVM support Yet to work out the storage part of say 8TB storage (with HA features, of course) for this beast. and accessability issues from devices. I am in the middle of trying to find out about What AMD has been doing in its end. and Lastly, wireless fencing devices Yet to look into easy monitoring and management tools. Any opinions please? Regards, Rajagopal

11 21

xm console -- what should I get?
by David Dyer-Bennet 19 Jul '10

19 Jul '10

If I type "xm console 6", say (when I have a virtual machine 6 running), what should I get? The documentation seems to indicate that I should get something that behaves like a telnet to a serial console. What I actually get is a connection that might show me a couple of lines of output that do look like they belonged on the console, but doesn't seem to accept any input (except that it does exit on the documented escape character ^[). These virtual systems show as running, and in fact with virt-viewer I can get a VNC console to them. Dom0 and the guests are Centos 5.5 x64, running on Intel processors with modern virtualization support (turned on in the bios, and it looks like Xen found it from xm dmesg output). -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

6 5

Paravirtualized Centos 5.5 guest under Xen
by David Dyer-Bennet 19 Jul '10

19 Jul '10

The virtualization manual doesn't seem to say; does one have to do anything to get the Centos 5.5 paravirtualization drivers installed? Or is it sufficient to specify a paravirtualized guest, and the Centos install will then detect that and load the right things? And, is there a way to check in the guest that the right drivers are loaded? What are they? -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

2 1

Re-exporting an NFS mount.. Possible?
by Kwan Lowe 19 Jul '10

19 Jul '10

I have an issue that is not all that unique, so I'm hoping someone has done it before. On the client end I have some very old RedHat based systems. On the server end is a Windows 2008 system running NFS server software. The clients mount the server resource as an NFS2 mount but some compliance issues were discovered with the setup. For various reasons, updating the client is not an option at this time. The fix the issue, the server needs to export NFS3 mounts but the clients do not support that version. As a workaround, I considered adding a third system running CentOS that would mount the server and re-export it to the clients. This will mitigate the current issue related to visibility of the share from certain groups. It does not appear possible, using the current kernel-based NFS server, to export an NFS-mounted filesystem. However, it appears that there is a FUSE NFS project that might work. Does anyone have any experience with such a setup?

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Re: [CentOS] 2X app server alternatives
by John R Pierce 19 Jul '10

19 Jul '10

On 07/18/10 11:15 AM, Silviu Hutanu wrote: > Yeap, but it will be nice to be based on VNC, actually I use Ulteo > Virtual Desktop ( http://www.ulteo.com ) I'm trying to figure out if > there is a better alternative.2X app server is just an example of a > better alternative. > > NX could be also an alternative. I suspect you'll need to define what your requirements are before discussing alternatives to some commercial package. 2X runs windows apps on a windows server, using the RDP protocol. apparently if you're considering VNC and other such things, none of those are requirements, leading me to wonder just what your requirements are. otoh, this discussion really has nothing to do with CentOS per se.

1 0

2X app server alternatives
by Silviu Hutanu 18 Jul '10

18 Jul '10

Does anyone know any oss alternatives to 2x aplication server ? Regards, Silviu Hutanu

4 3

noReplaceConfig equivalent for /etc/yum.conf
by FHDATA 16 Jul '10

16 Jul '10

Greetings, In up2date config file there is a directive by the name of noReplaceConfig . . . Do you know what is the /etc/yum.conf equivalent for that? noReplaceConfig[comment]=When selected, no packages that would change configuration data are automatically installed noReplaceConfig=1 Thank you,

2 1

Xen / KVM CentOS-5 How To Document
by gene.poole＠macys.com 16 Jul '10

16 Jul '10

Does anyone have any idea where I can locate a 'GOOD' how-to document on implementing Xen and/or KVM on a CentOS-5.3 system? I'm currently running VMware Server 2.0.2, but I would like to make the move to the open source virtualization - if possible. What I found is somewhat short on the networking piece. It doesn't matter if it's TUI or GUI. Thanks, Gene Poole gene.poole(a)macys.com

4 3

Error message downloading latest Spamassassin data files via sa-update
by Gilbert Sebenste 16 Jul '10

16 Jul '10

Hello everyone, When I type "sa-update" to get the latest files for Spamassassin, I see this error: ]# sa-update Argument "1.39_01" isn't numeric in subroutine entry at /usr/bin/sa-update line 83. My Google-fu came up with nothing when searching for this error. Am I the only one getting this to happen, or are any of you seeing it as well? Gilbert ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************

3 3

Subject=Re:CentOS Simple solution for small network in school
by Paul Schoonderwoerd 16 Jul '10

16 Jul '10

Hello, I would use some (old) pc's as thin clients and have them boot over the network from the server, or from cd. Then, have them make a connection to the server with the NX protocol. Thinstation.org provides all this. Just install FreeNX on the server (yum install) and manage the accounts as local accounts. Can't have it any simpeler than that in my opinion, also for management. Regards, -- Paul Schoonderwoerd Pollux IT - Open Source oplossingen & Netwerk beveiliging http://www.Pollux-IT.nl 0294-283832

1 0

Grub booting issue
by Jason Pyeron 16 Jul '10

16 Jul '10

https://bugzilla.redhat.com/show_bug.cgi?id=499204 Given I can boot the install disk and chroot in, there must be away around Grub while still keeping LVM installed. Any ideas? Screen says: Booting Centos (2.6.18-194.3.1.el5) root (hd0,0) Filesystem type is ext2fs, partition type 0x83 kernel /vmlinuz-2.6.18-194.3.1.el5 ro root=/dev/VolGroup00/LogVol00 [Linux-bzImage, setup=0x1e00, size=0x1db35c] And then hangs. It is aleged that Grub probes aroung the bios which chrashes on optiplex 320s -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

3 9

Disks for virtualization
by David Dyer-Bennet 16 Jul '10

16 Jul '10

I'm not looking to move virtual machines between physical platforms; just want some protection between applications sharing a physical server. They'll all be using local disk in one form or another. Much the easiest to manage is just having the virtual machine use a file in dom0 as its disk. Without pre-allocating, this lets me over-commit somewhat to cover unknown future needs, for example. The alternative seems to be LVM partitions. Those are easy to throw around too, but after enough creation / destruction you can end up with your free-space fragmented so you can't use it, right? But I imagine there's a performance benefit to LVM partitions over dom0 files. For things like foswiki for internal use by a development team, and Nagios monitoring for about a dozen systems, do i need that extra performance? Does anybody have a rule-of-thumb for the difference? -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

2 1

Problems getting my wireles connection to work
by Mark 16 Jul '10

16 Jul '10

I have an Everex laptop (ick, but it was super cheap) that has an Atheros wireless NIC in it, but I can't seem to get it to connect to my wireless in-home LAN. Here's what I've done so far (that isn't working) - any suggestions? [root@marktop mark]# lspci | grep Ether 00:12.0 Ethernet controller: VIA Technologies, Inc. VT6102 [Rhine-II] (rev 7c) 05:01.0 Ethernet controller: Atheros Communications Inc. AR2413 802.11bg NIC (rev 01) [root@marktop mark]# iwconfig wlan0 wlan0 IEEE 802.11bg ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm RTS thr:off Fragment thr:off Encryption key:off Power Management:off [root@marktop mark]# iwconfig wlan0 essid hrfamnet-101 [root@marktop mark]# iwconfig wlan0 enc XXXXXXXXXX [not really...] [root@marktop mark]# iwconfig wlan0 wlan0 IEEE 802.11bg ESSID:"hrfamnet-101" Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm RTS thr:off Fragment thr:off Encryption key:XXXXXXXXXX Power Management:off [root@marktop mark]# ifup wlan0 Determining IP information for wlan0... failed. [root@marktop mark]# iwlist wlan0 scan wlan0 Scan completed : Cell 01 - Address: 00:1C:F0:58:9A:31 Channel:6 Frequency:2.437 GHz (Channel 6) Quality=47/70 Signal level=-63 dBm Encryption key:on ESSID:"hrfamnet-101" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s 12 Mb/s; 24 Mb/s; 36 Mb/s Bit Rates:9 Mb/s; 18 Mb/s; 48 Mb/s; 54 Mb/s Mode:Master Extra:tsf=00000073d81085b2 Extra: Last beacon: 468ms ago IE: Unknown: 000C687266616D6E65742D313031 IE: Unknown: 010882848B960C183048 IE: Unknown: 030106 IE: Unknown: 2A0102 IE: Unknown: 32041224606C IE: WPA Version 1 Group Cipher : TKIP Pairwise Ciphers (2) : TKIP CCMP Authentication Suites (1) : PSK IE: Unknown: DD0900037F0101001FFF7F IE: WPA Version 257 Group Cipher : Proprietary Pairwise Ciphers (64) : IE: WPA Version 1 Group Cipher : Proprietary Pairwise Ciphers (22768) : Cell 02 - Address: 00:D0:9E:F6:B3:19 Channel:6 Frequency:2.437 GHz (Channel 6) Quality=39/70 Signal level=-71 dBm Encryption key:on ESSID:"2WIRE067" Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 22 Mb/s Mode:Master Extra:tsf=00000002b79d1987 Extra: Last beacon: 554ms ago IE: Unknown: 00083257495245303637 IE: Unknown: 010582840B162C IE: Unknown: 030106 [root@marktop mark]# What step am I missing that will connect me to the listed access point? I've looked this up in Google, but frankly the mass of information there is either off point (ubuntu, SuSE, etc.) or Windoze or doesn't apply to my NIC or something else. I've spent a whole day on this one and I'm no closer to a/the solution - well, I did get as far as the above. Thanks. Mark

10 34

DomU install failure for Centos 5.5 using the "RHEL 5.4 and greater" OS option
by David Dyer-Bennet 15 Jul '10

15 Jul '10

Had some trouble getting Centos x64 installed as a guest in my new Centos 5.5 x64 server using Xen (thanks again for all the help getting the hardware virtualization turned on and confirmed yesterday!). When I chose OS Linux, and whatever they called the detailed OS subtype I chose the Red Hat Enterprise 5.4 and greater, and then tried to install Centos 5.5, the install started and I got into the graphics installer, but when it was supposed to start installing individual packages the whole virt-manager and console window hung. Three times, at that same point. (I was monitoring web traffic to the install files it was working from, and it wasn't fetching files, either). When I selected just "RHEL 5", it installed (and I'm now running the package updater, and it may have hung there; we'll see). I would have expected the rhel 5.4 and greater option to be the right one for Centos 5.5. Anybody have similar experiences? Or, even more interesting, contrary experiences? -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

3 4

Redhat Exams.
by Ru-Benz Cáceres 15 Jul '10

15 Jul '10

I want to take the exams of redhat.. I´m starting now.. What advices I can get from you list? _________________________________________________________________ Explore the seven wonders of the world http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=QBRE

4 3

Follow Up - Centos / Red Hat EL Broken 5.4 + 5.5, ** Alternative solution **
by Seth Bardash 15 Jul '10

15 Jul '10

To the list: 1) Someone off the list (thanks!) offered to send me an RT kernel based on 2.6.23.X. So I thought why not try to build a standard / server type based on the standard 2.6.23 version. 2) Red Hat 6 Beta 2 is based on a similar starting point 3) I was not going to fix something Red Hat broke. They responded to me that they only support the configuration of the generic binary they ship. This is the answer I received from them for bug # 558367 "Jarod Wilson 2010-07-14 13:40:06 EDT Officially, Red Hat does not support rebuilds of its kernel with configurations other than the one Red Hat ships. You're welcome to submit a patch to fix the build, which will be considered for inclusion, and/or wait for someone here to have the time to work on this, but there are only so many hours in the day. Most of Red Hat engineering is busy working on problems related to configurations that Red Hat *does* support. If this is a particularly serious issue for you though, you're welcome to try to escalate it through customer support. " /Flame proof on This answer brings to light some very serious limitations. First, if you want to turn on a standard kernel feature and its broken (like what I tried), it is not officially supported by Red Hat nor Centos. Therefore, xfs, ntfs, and many other features quite a few of us use may be broken at any time when the upstream provider "fixes or updates" a kernel. /Flame proof off/ I am just stating a warning based on an official answer. NO OPINION OFFERED OR IMPLIED Now for the fix.... No, it was not me that fixed this. I just thought maybe we should try a kernel that has been thoroughly tested by the "kernel people". I used the kernel.org, 2.6.23.17 kernel I used the old .config from the latest Centos 5.5 src.rpm Ran make oldconfig I answered most new questions with the default I enabled AMD Opteron, Disabled optimize for size and changed the default CPU frequency governor to performance. I turned off isdn, infiniband, ATM and a few others (we don't use them) I turned on NTFS and with writes (it was broken in 5.2), xfs and jfs then make; make install_modules mkinitrd ; edit grub; reboot This seems to work fine on a standard Centos 5.5 x86_64 install. I am going to run this on a test server for a few weeks and see how well it works. If I see any issues I will report them but so far it works just fine -- Seth Bardash Integrated Solutions and Systems LLC A Metso IT Consultant 719-495-5866 Shop Phone 719-386-0218 Metso Phone 719-337-4779 Cell seth(a)integratedsolutions.org Failure cannot survive knowledge and perseverance!

2 1

error: _IceTransSocketUNIXConnect: Cannot connect to non-local host [hostname]
by ken 15 Jul '10

15 Jul '10

When launching oowriter and other apps, I get this error: _IceTransSocketUNIXConnect: Cannot connect to non-local host myh.dom.tld The app -- oowriter or whatever I happen to be invoking-- starts okay. But this error message tells me something's not right. Curiously, the "hostname" command yields "myhost", but "hostname -f" yields "localhost.localdomain". Doing "ifconfig eth0" specifies the correct IP address for this system. And the listing in /etc/hosts for that IP address does specify myh.dom.tld. -- Find research and analysis on US healthcare, health insurance, and health policy at: <http://healthpolicydaily.blogspot.com/>

1 0

Linux Kernel Physical Interface Limit
by William Warren 15 Jul '10

15 Jul '10

I think it's baloney mainly because i can't find a mention of it anywhere. Is there REALLY a limit on the number of physical network interfaces in the Kernel?

10 16

GPT Partitions >2.2T with Centos 5.5
by Jens Neu 15 Jul '10

15 Jul '10

Dear all, unfortunately I observe drastic drops in read- performance when I connect LUNs >2.2T to our Centos 5.5 Servers. I suspect issues with the GUID Partition Table, since it happens reproducibly only on the LUNs >2.2T and goes back to normal performance when using a LUN <2T with "normal", Legacy MBR partitions. All machines are CentOS 5.5 (and RHEL 5.5) on IBM Blades LS21/LS41, all LUNs via Brocade 4G FC Switches from a SUN 7310 Unified Storage, EXT3 filesystems with standard settings. Any hints? regards Jens

4 5

Unloking gnome keyring on login
by Giulio Troccoli 15 Jul '10

15 Jul '10

I hope someone can help me because I have spent a week on this and still I can't make it to work. I have a CentOS 5.5 server and I am trying to set it up so that upon login the gnome default keyring is unlocked. I don't have a desktop as users will login using ssh only. I have search the forum and google it, and I did find some help. All the articles though said to change /etc/pam.d/gdm (which I think is for the Gnome Desktop Manager). I did it anyway but no joy. I tried changin /etc/pam.d/login, and no joy. I'm becoming a bit desperate. The changes I have done are to add auth optional pam_keyring.so (sometimes with try_first_pass) and session optional pam_keyring.so auto_start (sometimes without auto_start) All the time the gnome-keyring-daemon is not started. But even if I start it at login, with a new /etc/prodile.d/gnome-keyring-daemon.sh script which runs export `/usr/bin/gnome-keyring-daemon`, the keyring is not unlocked at login. Just to let you know, I use the keyring to store passwords for a Subversion repository. The first time, after logging in, I use Subversion I am asked for the password to unlock the keyring. Then everything goes fine, i.e. I'm not ask for the Subversion password. After I sorted this out I need to set the server so that the keyring password is changed automatically when the user changes his login password (I tried alread, changing /etc/pam.d/passwd similarly as I've done above but it's not working) So, please can anyone help me? Thanks Giulio Linedata Limited Registered Office: 85 Gracechurch St., London, EC3V 0AA Registered in England and Wales No 3475006 VAT Reg No 710 3140 03

3 6

free
by Jason Pyeron 14 Jul '10

14 Jul '10

The man page does not say much, but does this mean I have only 396668 used by programs (used-cached)? Or shoul I be reading the 2nd line? [root@ten-212 ~]# free total used free shared buffers cached Mem: 7918844 5478820 2440024 0 111684 5082152 -/+ buffers/cache: 284984 7633860 Swap: 9961464 204 9961260 -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is copyright PD Inc, subject to license 20080407P00.

5 5

os that rather uses the gpu?
by Jozsi Avadkan 14 Jul '10

14 Jul '10

Does someone know a distribution/operating system, that rather uses the GPU for "working", not the CPU? [by default] Or this solution is still in the "beginning part"? Thanks for any tips, link, suggestions.

3 2

Re: [CentOS] GPT Partitions >2.2T with Centos 5.5
by Alexander Dalloz 14 Jul '10

14 Jul '10

>> I think ext3 is a bit slow on so big LUNS, try xfs or similar? > > there is no official support for xfs in RHEL5, so that is not an option. > Besides, I'm talking about a drop of >150mb/s to ~10mb/s read performance > when cracking the 2.2T size. This is clearly not in the ext3 (or FS for > that matter) magnitude of performance issues. Also, numbers stay the same > when dd'ing on the raw device (LUN). > > -Jens Hello Jens, I always used LVM to make LUNs from a NetApp SAN available to CentOS/RHEL 4/5 systems. Administrating several systems with multiple LUNs of +2.2TB and not seeing such a negative performance impact. Filesystem used is ext3. Regards Alexander

1 0

Re: [CentOS] Running yum shows errors
by Jens Neu 14 Jul '10

14 Jul '10

Hi, Did you try to disable the mirror selection and specify one single repo? -Jens ----- Originalnachricht ----- Von: Jatin Davey [jashokda(a)cisco.com] Gesendet: 14.07.2010 11:03 ZE5B An: centos(a)centos.org Betreff: [CentOS] Running yum shows errors Hi I am getting the following errors when i try to use yum to install the net-snmp paclages. [root@sc1 yum.repos.d]# yum install net-snmp Loaded plugins: fastestmirror Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 229, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 104, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 339, in doCommands self._getTs(needTsRemove) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in _getTs self._getTsInfo(remove_only) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in _getTsInfo pkgSack = self.pkgSack File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 591, in <lambda> pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 434, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.4/site-packages/yum/repos.py", line 223, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 71, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 176, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 176, in postreposetup_hook if downgrade_ftp and _len_non_ftp(repo.urls) == 1: File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 585, in <lambda> urls = property(fget=lambda self: self._geturls(), File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 582, in _geturls self._baseurlSetup() File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 538, in _baseurlSetup mirrorurls.extend(self._getMirrorList()) File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1349, in _getMirrorList fo = urlgrabber.grabber.urlopen(url, proxies=self.proxy_dict) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 612, in urlopen return default_grabber.urlopen(url, **kwargs) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 891, in urlopen return self._retry(opts, retryfunc, url) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 852, in _retry r = apply(func, (opts,) + args, {}) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 890, in retryfunc return URLGrabberFileObject(url, filename=None, opts=opts) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1008, in __init__ self._do_open() File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1091, in _do_open fo, hdr = self._make_request(req, opener) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1204, in _make_request fo = opener.open(req) File "/usr/lib/python2.4/urllib2.py", line 358, in open response = self._open(req, data) File "/usr/lib/python2.4/urllib2.py", line 376, in _open '_open', req) File "/usr/lib/python2.4/urllib2.py", line 337, in _call_chain result = func(*args) File "/usr/lib/python2.4/urllib2.py", line 573, in <lambda> lambda r, proxy=url, type=type, meth=self.proxy_open: \ File "/usr/lib/python2.4/urllib2.py", line 580, in proxy_open if '@' in host: TypeError: iterable argument required Please let me know what needs to be done. Thanks Jatin _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos http://www.biotronik.com * * * * * * * * BIOTRONIK SE & Co. KG Woermannkehre 1, 12359 Berlin, Germany Sitz der Gesellschaft: Berlin, Registergericht: Berlin HRA 6501 Vertreten durch ihre Komplementärin: BIOTRONIK MT SE Sitz der Gesellschaft: Berlin, Registergericht: Berlin HRB 118866 B Vorsitzender des Verwaltungsrats: Dr. Max Schaldach Geschäftsführende Direktoren: Christoph Böhmer, Dr. Werner Braun, Dr. Lothar Krings * * * * * * * * BIOTRONIK - A global manufacturer of advanced Cardiac Rhythm Management systems and Vascular Intervention devices. Quality, innovation, and reliability define BIOTRONIK and our growing success. We are innovators of technologies like the first wireless remote monitoring system - Home Monitoring®, Closed Loop Stimulation and coveted lead solutions as well as state-of-the-art stents, balloons and guide wires for coronary and peripheral indications. We highly invest in the development of drug eluting devices and are leading the industry with our bioabsorbable metal stent program. * * * * * * * * This e-mail and the information it contains including attachments are confidential and meant only for use by the intended recipient(s); disclosure or copying is strictly prohibited. If you are not addressed, but in the possession of this e-mail, please notify the sender immediately and delete the document.

1 0

Running yum shows errors
by Jatin Davey 14 Jul '10

14 Jul '10

Hi I am getting the following errors when i try to use yum to install the net-snmp paclages. [root@sc1 yum.repos.d]# yum install net-snmp Loaded plugins: fastestmirror Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.user_main(sys.argv[1:], exit_code=True) File "/usr/share/yum-cli/yummain.py", line 229, in user_main errcode = main(args) File "/usr/share/yum-cli/yummain.py", line 104, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 339, in doCommands self._getTs(needTsRemove) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in _getTs self._getTsInfo(remove_only) File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in _getTsInfo pkgSack = self.pkgSack File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 591, in <lambda> pkgSack = property(fget=lambda self: self._getSacks(), File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 434, in _getSacks self.repos.populateSack(which=repos) File "/usr/lib/python2.4/site-packages/yum/repos.py", line 223, in populateSack self.doSetup() File "/usr/lib/python2.4/site-packages/yum/repos.py", line 71, in doSetup self.ayum.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 176, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 176, in postreposetup_hook if downgrade_ftp and _len_non_ftp(repo.urls) == 1: File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 585, in <lambda> urls = property(fget=lambda self: self._geturls(), File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 582, in _geturls self._baseurlSetup() File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 538, in _baseurlSetup mirrorurls.extend(self._getMirrorList()) File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1349, in _getMirrorList fo = urlgrabber.grabber.urlopen(url, proxies=self.proxy_dict) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 612, in urlopen return default_grabber.urlopen(url, **kwargs) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 891, in urlopen return self._retry(opts, retryfunc, url) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 852, in _retry r = apply(func, (opts,) + args, {}) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 890, in retryfunc return URLGrabberFileObject(url, filename=None, opts=opts) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1008, in __init__ self._do_open() File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1091, in _do_open fo, hdr = self._make_request(req, opener) File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line 1204, in _make_request fo = opener.open(req) File "/usr/lib/python2.4/urllib2.py", line 358, in open response = self._open(req, data) File "/usr/lib/python2.4/urllib2.py", line 376, in _open '_open', req) File "/usr/lib/python2.4/urllib2.py", line 337, in _call_chain result = func(*args) File "/usr/lib/python2.4/urllib2.py", line 573, in <lambda> lambda r, proxy=url, type=type, meth=self.proxy_open: \ File "/usr/lib/python2.4/urllib2.py", line 580, in proxy_open if '@' in host: TypeError: iterable argument required Please let me know what needs to be done. Thanks Jatin

1 0

[Vulgarly-Selfish-Commercial] Project: Private Super computer (HPC) in a Private cloud
by Rajagopal Swaminathan 13 Jul '10

13 Jul '10

Greetings, I am atempting to build the above captioned environment. I will contribute to this list my learnings. I need income as I need to fund this project. Threre are various revenue sharing models I have in mind. One size just cant fit all after all. (angel investors or whatever, anybody)? My offer: "Every reply for this thread will get INR 11/- from me iff only I could remit my money in a single click to the thread posters and me." Learners should pay Rs. 21/- to cober my private tution charges and establishment charges that they choose engage with. Please contact me offlist. Regards, Rajagopal

1 1

Superblock Problem
by Guy Boisvert 13 Jul '10

13 Jul '10

Hi all, After rebooting my CentOS 5.5 server, i have the following message: ================================== Red Hat nash version 5.1.19.6 starting EXT3-fs: unable to read superblock mount: error mounting /dev/root on /sysroot as ext3: invalid argument setuproot: moving /root failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory switchroot: mount failed: no such file or directory Kernel panic - not syncing: Attempted to kill init! I booted the server (rescue mode) with CentOS 5.4 x64 i have used to initially install it. It recognizes all the RAID1 partitions i have. cat /mnt/sysimage/proc/mdstat ============================ md3 : active raid1 sdb2[1] sda2[0] 2048192 blocks [2/2] [UU] md1 : active raid1 sdb3[1] sda3[0] 486134848 blocks [2/2] [UU] md0 : active raid1 sdb1[0] sda1[1] 200704 blocks [2/2] [UU] unused devices: <none> cat /mnt/sysimage/boot/grub/menu.lst =================================== # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You have a /boot partition. This means that # all kernel and initrd paths are relative to /boot/, eg. # root (hd0,0) # kernel /vmlinuz-version ro root=/dev/md1 # initrd /initrd-version.img #boot=/dev/md0 default=0 timeout=5 splashimage=(hd0,0)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-164.10.1.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-164.10.1.el5 module /vmlinuz-2.6.18-164.10.1.el5xen ro root=/dev/md1 rhgb quiet module /initrd-2.6.18-164.10.1.el5xen.img title CentOS (2.6.18-164.10.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.10.1.el5 ro root=/dev/md1 rhgb quiet initrd /initrd-2.6.18-164.10.1.el5.img title CentOS (2.6.18-164.6.1.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.6.1.el5 ro root=/dev/md1 rhgb quiet initrd /initrd-2.6.18-164.6.1.el5.img title CentOS (2.6.18-164.6.1.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-164.6.1.el5 module /vmlinuz-2.6.18-164.6.1.el5xen ro root=/dev/md1 rhgb quiet module /initrd-2.6.18-164.6.1.el5xen.img title CentOS (2.6.18-164.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-164.el5 module /vmlinuz-2.6.18-164.el5xen ro root=/dev/md1 rhgb quiet module /initrd-2.6.18-164.el5xen.img title CentOS-base (2.6.18-164.el5) root (hd0,0) kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/md1 rhgb quiet initrd /initrd-2.6.18-164.el5.img ./getinfo.sh disk ============== == BEGIN uname -rmi == 2.6.18-164.el5 x86_64 x86_64 == END uname -rmi == == BEGIN rpm -q centos-release == centos-release-5-5.el5.centos == END rpm -q centos-release == == BEGIN getenforce == Permissive == END getenforce == == BEGIN cat /etc/fstab == /dev/md1 / ext3 defaults,acl 1 1 /dev/md0 /boot ext3 defaults 1 2 tmpfs /dev/shm tmpfs defaults 0 0 devpts /dev/pts devpts gid=5,mode=620 0 0 sysfs /sys sysfs defaults 0 0 proc /proc proc defaults 0 0 /dev/md3 swap swap defaults 0 0 == END cat /etc/fstab == == BEGIN df -h == Filesystem Size Used Avail Use% Mounted on /dev/md1 450G 72G 355G 17% / /dev/md0 190M 45M 136M 25% /boot == END df -h == == BEGIN fdisk -l == Disk /dev/md0 doesn't contain a valid partition table Disk /dev/md1 doesn't contain a valid partition table Disk /dev/md3 doesn't contain a valid partition table Disk /dev/sda: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sda1 * 1 25 200781 fd Linux raid autodetect /dev/sda2 26 280 2048287+ fd Linux raid autodetect /dev/sda3 281 60801 486134932+ fd Linux raid autodetect Disk /dev/sdb: 500.1 GB, 500107862016 bytes 255 heads, 63 sectors/track, 60801 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdb1 * 1 25 200781 fd Linux raid autodetect /dev/sdb2 26 280 2048287+ fd Linux raid autodetect /dev/sdb3 281 60801 486134932+ fd Linux raid autodetect Disk /dev/md0: 205 MB, 205520896 bytes 2 heads, 4 sectors/track, 50176 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md1: 497.8 GB, 497802084352 bytes 2 heads, 4 sectors/track, 121533712 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk /dev/md3: 2097 MB, 2097348608 bytes 2 heads, 4 sectors/track, 512048 cylinders Units = cylinders of 8 * 512 = 4096 bytes == END fdisk -l == == BEGIN blkid == /dev/md3: TYPE="swap" /dev/md0: UUID="085a2fe2-a28b-4c82-aae8-d4711a73f824" TYPE="ext3" /dev/md1: UUID="4e26e66d-b4f3-45e3-8307-e13358b13610" TYPE="ext3" /dev/sdb3: UUID="4e26e66d-b4f3-45e3-8307-e13358b13610" TYPE="ext3" /dev/sdb2: TYPE="swap" /dev/sdb1: UUID="085a2fe2-a28b-4c82-aae8-d4711a73f824" TYPE="ext3" /dev/sda3: UUID="4e26e66d-b4f3-45e3-8307-e13358b13610" TYPE="ext3" /dev/sda2: TYPE="swap" /dev/sda1: UUID="085a2fe2-a28b-4c82-aae8-d4711a73f824" TYPE="ext3" == END blkid == Tried to boot from different kernels, same result. I searched Google and read something about superblock being "repeted" to many places on the filesystem but didn't tried anything because of bad explanations and fear of srewing up the partition. I already backed up the important stuff to another server. I'd like to know if it's possible to fix that problem quickly, if not i'll re-install it. But i'd like to know the fix anyway so if it appends again, would know what to do! Thanks! Guy Boisvert IngTegration inc. -- Guy Boisvert, ing. IngTegration inc. http://www.ingtegration.com AVIS DE CONFIDENTIALITÉ : ce message peut contenir des renseignements confidentiels appartenant exclusivement à IngTegration Inc. ou à ses filiales. Si vous n'êtes pas le destinataire indiqué ou prévu dans ce message (ou responsable de livrer ce message à la personne indiquée ou prévue) ou si vous pensez que ce message vous a été adressé par erreur, vous ne pouvez pas utiliser ou reproduire ce message, ni le livrer à quelqu'un d'autre. Dans ce cas, vous devez le détruire et vous êtes prié d'avertir l'expéditeur en répondant au courriel. CONFIDENTIALITY NOTICE : Proprietary/Confidential Information belonging to IngTegration Inc. and its affiliates may be contained in this message. If you are not a recipient indicated or intended in this message (or responsible for delivery of this message to such person), or you think for any reason that this message may have been addressed to you in error, you may not use or copy or deliver this message to anyone else. In such case, you should destroy this message and are asked to notify the sender by reply email.

3 4

Setting apache's maxclients higher than 256 in CentOS
by robert mena 13 Jul '10

13 Jul '10

Hi, I could not find any reference if the version of apache compiled for centos 5.x has support for more than 256 clients in apache's maxclients. If that is not the case how can I recompile the package with such support? Regards.

3 2

is it safe to resize root, on an LVM system, online?
by Rudi Ahlers 12 Jul '10

12 Jul '10

Hi, One of our servers has a too small root partition on LVM and needs to be resized. Can / be safely increased online, without a reboot? [root@zaxen02 ~]# lvscan ACTIVE '/dev/LVM01/root' [4.00 GB] inherit ACTIVE '/dev/LVM01/home' [20.00 GB] inherit ACTIVE '/dev/LVM01/var' [4.00 GB] inherit ACTIVE '/dev/LVM01/swap' [4.00 GB] inherit ACTIVE '/dev/LVM01/log' [1.00 GB] inherit ACTIVE '/dev/LVM01/webmin' [2.00 GB] inherit ACTIVE '/dev/LVM01/xenstored' [2.00 GB] inherit ACTIVE '/dev/LVM01/xensave' [2.00 GB] inherit ACTIVE '/dev/LVM01/opennation-net_img' [10.00 GB] inherit ACTIVE '/dev/LVM01/opennation-net_swap' [1.00 GB] inherit ACTIVE '/dev/LVM01/pluto_img' [100.00 GB] inherit ACTIVE '/dev/LVM01/pluto_swap' [1.00 GB] inherit ACTIVE '/dev/LVM01/tmp' [5.00 GB] inherit [root@zaxen02 ~]# pvscan PV /dev/md1 VG LVM01 lvm2 [232.69 GB / 76.69 GB free] Total: 1 [232.69 GB] / in use: 1 [232.69 GB] / in no VG: 0 [0 ] [root@zaxen02 ~]# -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

6 9

Project Management Solutions
by Joseph L. Casale 12 Jul '10

12 Jul '10

I need to implement a solution and not having ever used anything but MS Project I would be grateful for a reco on something good. The only hope would be that its web based but I am open to anything! Thanks! jlc

8 11

Samba and file permissions
by Todd Cary 12 Jul '10

12 Jul '10

A problem that has plagued me for a long time (finally decided to get some expert help) is setting the owner/group on directories/files I create with samba. Here is my situation: On my Linux/Apache I have a user, smith. The /home/smith directory is owned by smith and is part of the group, todd (me) with permissions 775. This works fine until I create via samba a directory in smith e.g. /home/smith/test. The directory is owned by todd and smith cannot create a file in it. What have I missed and how do I fix it? Todd P.S. My admin expertise is just moderate since my Linux server just runs and runs without much administration needed. -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com

4 5

"yum update": When is new header data downloaded? (Trying to set up custom repository...)
by Toralf Lund 12 Jul '10

12 Jul '10

I'm trying to set up a custom rpm respository for some in-house software, and configure a number of CentOS 5 clients so that they may install and update the software in question from the location in question. I think I've mostly figured out how to do this - I've successfully installed software on one of the clients via "yum install <my package>" after adding an URL of the form ftp://myserver/pub/<mysoftware> to the list of repositories, and uploading 1. A directory containing the packages. 2. A "repodata" directory generated by createrepo. to the appropriate server location. But then I wanted to see if could publish an upgrade, too, so I did, on the server-side: 1. Updated the release number in my rpm spec files and rebuilt. 2. Put the rpms on the right location. 3. createrepo -q --update <directory> And on the client yum update <my package> Problem is, this did nothing besides printing the message: No Packages marked for Update So I thought the repository hadn't been properly updated, but then I tried (still on the client): rm -rf /var/cache/yum/<mysoftware> yum update <my package> And, hey presto, the package was upgraded to the new version. So, it seems like I managed to correctly update the repodata and all, but originally, yum concluded that it didn't need to download a new version, but could use the one cached earlier. instead. Does anyone have any idea why this happened? How exactly does yum decide when to download new headers and when to reuse cached data? Thanks, - Toralf This e-mail, including any attachments and response string, may contain proprietary information which is confidential and may be legally privileged. It is for the intended recipient only. If you are not the intended recipient or transmission error has misdirected this e-mail, please notify the author by return e-mail and delete this message and any attachment immediately. If you are not the intended recipient you must not use, disclose, distribute, forward, copy, print or rely on this e-mail in any way except as permitted by the author.

3 6

Re: [CentOS] Smallest install?
by m.roth＠5-cent.us 12 Jul '10

12 Jul '10

Brunner, Brian T. wrote: > >> > I have a 500Mb ATA Flash drive in my machine. If I deselect >> > everything at install time (CentOS 5.0 - just for testing) it still >> > requires 524Mb. Is there any way of doing an even smaller install? >> >> Run a pre 5 series install and it is straightforward to hold size down >> >> There are lower thresholds one cannot go below and still stay >> with current updates. My article on 'tiny centos' provides >> 'slimming scripts' to trim away coherent sets to taste while >> still satisfying dependencies >> http://www.owlriver.com/tips/tiny-centos/ > > Thank you! Since I also want to make a tiny flash-based centos, I'll > look into this! Timny, flash-based? I recently bought an 8GB USB key for a netbook distro instal, and we have two here at work for some of our rackmounts that have no DVD reader. > >> Just because one is familiar with >> hammers does not mean one should be shaving cats with one > > That depends, in part, on how much one dislikes cats. > > Shaving pissed-off tomcats is best done with welding gloves and apron, > and a hammer. Um, that may not work, he says, thinking of his friend in the US northwet with a full-sized cougar.* ObDiscllosure: cat lover; likes dogs ok, otherwise I'd suggest grooming your dog with a hammer. mark

1 0

Correct permissions for uploading files
by Todd Cary 12 Jul '10

12 Jul '10

I am trying to implement PHP upload functionality for an application. When I attempt an upload in my test environment, I get the following error: An error has occurred: receiving directory insufficient permission... The upload form is reloading The destination file being moved by move_uploaded_file is /home/httpd//test/upload/uploads/1278898550-_DSC1159.jpg The initial file name is suppose to be /tmp/phpR1lmmc I am not sure what to set for Owner and Group for the "uploads" directory nor the permissions (it is now set to 775). Many thanks for some guidance for this matter... Todd -- Ariste Software Petaluma, CA 94952 http://www.aristesoftware.com

4 4

Smallest install?
by Stephen Harris 12 Jul '10

12 Jul '10

I have a 500Mb ATA Flash drive in my machine. If I deselect everything at install time (CentOS 5.0 - just for testing) it still requires 524Mb. Is there any way of doing an even smaller install? -- rgds Stephen

8 10

Simple solution for small network in a school ?
by Niki Kovacs 12 Jul '10

12 Jul '10

Hi, I have to install a small network in a school in a nearby village. The network will be Linux-only, one server and fifteen desktops. Here's the idea. 1) Authentication should be managed centrally on the server. 2) User home directories should also be on the server. 3) Users should all have disk quotas, something like 1 GB per user. 4) Some shared directories should be read/write for a defined group of users (teachers) and read-only for others. So far, I've only dealt with local authentication. I have a little practice in basic setups of Samba and NFS and managed to get these to work OK. On the other hand, I've never worked with NIS, LDAP or the likes. My question is more general, and I don't want to go into technical details. According to the KISS principle, which solution would you recommend (or explicitly *not* recommend)? A mix of LDAP and Samba? Or NIS and NFS? And what's this thing called Directory Server, which vaguely sounds like it's the right way to go? Any suggestions? Cheers from the hot South of France, Niki

10 10

Networking just stopped working
by Christopher Chan 12 Jul '10

12 Jul '10

Hi all, I have a box with a quad port Netxen NIC running Centos 5. All four interfaces are slaves of bond0 and bond0 is used by two vlan interfaces. All was working just fine until just recently when everything just stopped working. ethtool reports all the individual interfaces are just fine. The switch is not complaining either. But I cannot ping anywhere not can others 'see' the box. Any ideas? I have turned off iptables, rebooted the switches but still the thing won't work. Christopher

7 23

Redundant LAN routing possible?
by Emmanuel Noobadmin 11 Jul '10

11 Jul '10

I've been reading that it's possible to set up a system with multiple NIC to provide redundant internet connectivity such that it will switch to a secondary connection if the primary ISP fails. Is it possible in a similar way to setup redundant LAN routing? I read that it is possible to aggregate/bond multiple NIC to stackable switches that support link aggregation and redundancy. But if only simple switches are available, is something like this possible? e.g. System A eth0 -> lan switch/router 1 eth1 -> lan switch/router 2 System B eth0 -> lan switch 1 eth1 -> lan switch 2 Then somehow specify that, if lan switch 1 fails, the two systems will switch to using switch 2 so that in case of a switch failure, the network continues to remain operational.

7 10

lm_sensors and Shuttle
by listmail 11 Jul '10

11 Jul '10

Hi All, I'm trying to get lm_sensors to work on a Shuttle with an AMD K10. The version of lm_sensors in the main CentOS repo is 2.10.7, which is two years old now. Support for the K10 was added about a year ago. So, does anyone know if there are binaries available for more recent versions of lm_sensors? Also, if anyone has knowledge of the sensors layout for recent Shuttle AMD motherboards, that would be very helpful. The sensors-detect script from 2.10.7 doesn't detect anything useful... Thanks, --Bill

5 6

wlan
by mattias 10 Jul '10

10 Jul '10

How to search after wlans using command prompt I have no gui

3 4

OpenOffice.org 3.1 installation was corrupted-installed again, nothing in Applications/Office menu
by Lanny Marcus 10 Jul '10

10 Jul '10

I had a corrupted installation of OpenOffice.org 3.1. When I used "yum remove openoffice.org-core" the response was "package openoffice.org-core available but not installed", but then, when I used "yum install openoffice.org-core there was a long list of Transaction Check Errors. I then removed openoffice.org3.1-redhat-menus-noarch which was in the errors. Here's the first of those errors: Transaction Check Error: file /usr/bin/soffice from install of openoffice.org-core-3.1.1-19.5.el5_5.1.i386 conflicts with file from package openoffice.org3.1-redhat-menus-3.1-9393.noarch The transaction completed OK, after I removed openoffice.org3.1-redhat-menus-noarch, but now, there is nothing in Applications/Office menu for OpenOffice.org :-) Question: How do I get the different entries for OpenOffice.org to appear in that menu again so I can launch the application? (If I need to install the latest version of openoffice.org3.1-redhat-menus-noarch what command do I use to get the correct version?) CentOS 5.5 (32 bit): [lanny@dell2400 ~]$ uname -a Linux dell2400.homelan 2.6.18-194.3.1.el5 #1 SMP Thu May 13 13:09:10 EDT 2010 i686 i686 i386 GNU/Linuxlate TIA! Lanny Panties, Swimwear, Women's Bras, Mens Underwear http://www.bras-panties.com/

4 11

vmware
by mattias 10 Jul '10

10 Jul '10

How can vmware run more stable on centos and not on ubuntu? I meen Usb works fine on centos but not on ubuntu

5 8

log
by mj 10 Jul '10

10 Jul '10

My log seems not to be accepted by the list

2 1

OT: ?? Centos Still Broken, Red Hat won't fix ??
by Seth Bardash 09 Jul '10

09 Jul '10

To the Linux Community at Large: I reported to this list back in January, 2010 that the standard x86_64 kernel, when built from the src.rpm and modified for AMD K8 / K10 Extensions would not build. I reported this here and to Red Hat via Bugzilla ID number 558367. RH AS / Centos 5.3 worked fine. That was Centos 5.4 / Red Hat Enterprise AS 5 Update 4. Today we tried to optimize Red Hat Enterprise AS 5 Update 5. Same problem. At last check all kernels from 2.6.18-10 to 2.6.18-194 won't build with AMD specific optimizations. For 9 years now we have used and supported Centos and before that white box. We have sold, installed and provided consulting on Red Hat Linux and RH Enterprise Linux, Centos, Scientific Linux, OpenSUSE and SUSE Linux Enterprise. In April this year, the bug was still marked as new and we had to recommend to a customer to use SUSE Linux Enterprise instead of Red Hat Enterprise, as Novell's product supports optimizations in its kernel for AMD Opterons. 12 SLES Enterprise copies were sold to the customer. I'm sure that would have easily paid for the fix required in Redhat's kernel. I am beginning to wonder if Red Hat is getting too big? Or that it just does not care. Other ideas less pleasant come to mind.... Today, the old bug was still marked as new (6+ months and counting). I entered a new bug report for RH 5.5 for the same issue. Is there no way, unless you are a huge customer, to get your bug listed as anything except LOW PRIORITY?? Now we are looking at the AMD G34 CPU's and are building some demo units. I think its time to benchmark these systems with the working - non optimized Red Hat / Centos Linux versus the optimized Opensuse / SLES Linux for standard server functions and publish them. Has anyone else had this NON response from Red Hat for similar issues? I'd like to hear from them. Thanks for reading.... -- Seth Bardash Integrated Solutions and Systems LLC 719-495-5866 Shop Phone 719-337-4779 Cell seth(a)integratedsolutions.org Failure cannot survive knowledge and perseverance!

8 11

Configuring atrpms repo?
by Jeff Layton 09 Jul '10

09 Jul '10

Afternoon, Sorry for being dense but I can seem to configure the repo for atrpms correctly. I've tried a few things and none of them seem to work so rather than embarrass myself in regard to yum repo configuration, can someone post the repo configuration? TIA! Jeff

2 3

Kickstart from tagged VLAN?
by Jeff Hefner 09 Jul '10

09 Jul '10

I've searched around but haven't found a definitive answer yet, is it possible to kickstart from a tagged VLAN? I found this bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=431915 But I can't find out how far the vlan support goes. I haven't found anything about it in any kickstart docs. I have two tagged vlans: Vlan 100 - server subnet Vlan 101 - backup subnet From start to finish anaconda needs to pick up a dynamic address from vlan 100. After that the kickstart file specifies the static adress from vlan100 and it's address from the backup subnet. Anyone know if this is currently possible? If so any nod in the right direction would be appreciated Jeff

7 8

difference between stickybit SUID and SGID
by Agnello George 09 Jul '10

09 Jul '10

i had a small query , whant is the difference between stickybit SUID and SGID , is there any proper site where i can get a clear understanding . -- Regards Agnello D'souza

3 2

DNS problem while trying to join windows 7 to samba3x pdc
by Doug Coats 09 Jul '10

09 Jul '10

I am running centos 5.5 using samba3x as a pdc. I migrated to samba3x so that I could join Windows 7 machines to the domain. It is a new setup using a tried and true configuration from a different box. I have used this configuration in the past to joing Windows XP Pro machines. And I havn't found anyting helpful on the error with google. I can ping the server name and the server can ping the windows 7 box. I can access smaba shares on the server but I cannot join the domain. I have applied the reg settings to win7 and when I try to join I get this error. An Active Directory Domain Controller (AD DC) for domain admin could not be contacted. Ensure that the domain name is typed correctly. If the name is correct, click Details for troubleshooting information. The details read: Note: This information is intended for a network administrator. If you are not your network's administrator, notify the administrator that you received this information, which has been recorded in the file C:\Windows\debug\dcdiag.txt. The domain name "admin" might be a NetBIOS domain name. If this is the case, verify that the domain name is properly registered with WINS. If you are certain that the name is not a NetBIOS domain name, then the following information can help you troubleshoot your DNS configuration. The following error occurred when DNS was queried for the service location (SRV) resource record used to locate an Active Directory Domain Controller (AD DC) for domain "admin": The error was: "DNS name does not exist." (error code 0x0000232B RCODE_NAME_ERROR) The query was for the SRV record for _ldap._tcp.dc._msdcs.admin Common causes of this error include the following: - The DNS SRV records required to locate a AD DC for the domain are not registered in DNS. These records are registered with a DNS server automatically when a AD DC is added to a domain. They are updated by the AD DC at set intervals. This computer is configured to use DNS servers with the following IP addresses: 192.168.4.1 - One or more of the following zones do not include delegation to its child zone: admin . (the root zone) I seem to have a DNS problem but I don't even know what it should be doing so that I know where to start to troubleshoot. Thanks for any help! Doug

8 45

mount cannot find system /dev/root
by sync 09 Jul '10

09 Jul '10

Hi, guys: I attempt to compile a kernel on CentOS 5.3 i386 which is installed in the Virtualbox machine, and its kernel version is 2.6.18-128.el5 ,the new kernel version is 2.6.34.1 All make procedure is running ok. I can generate initrd image with no problem too. But, when I try booting this kernel, I get Kernel panic error message like these: mount: could not find filesystem '/dev/root' setuproot: moving /dev failed: No such file or directory setuproot: error mounting /proc: No such file or directory setuproot: error mounting /sys: No such file or directory switchroot: mount failed: No such file or directory Kernel panic - not syncing: Attempted to kill init! I don't know what is going on here!! Thanks if somebody will be able to help me!

2 2

EC2 elastic IP failover
by Andrei 08 Jul '10

08 Jul '10

Hello, I have two EC2 instances and I would like to setup some sort of failover strategy for them. They currently act as load balancers, forwarding layer 7 traffic using haproxy and stunnel to other EC2 instances. One of these load balancers currently has an elastic IP assigned with an A record pointing to it. What I'm trying to achieve is to remap this elastic IP in the eventuality of an instance failure. I know that heartbeat/keepalived/pacemaker/openais can do this without any kind of trouble but these tools don't work in Amazon's cloud due to restrictions imposed on their network (multicast/unicast traffic). One way of doing this would would require a network monitoring system that supports event-based script execution. At this point I'm thinking about writing a wrapper script around 'ec2-associate-address' and upon detecting a failure on instance A, my network monitoring system would simply execute the script on instance B in order to re-associate the elastic IP. Does anyone have a better/more elegant solution to this? Regards, -- Andrei

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