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VNC viewer blank screen
by Vijay Shanker Dubey 11 Mar '10

11 Mar '10

Hi, I have configured vnc on my centos server machine. But, unable to access the vnc client. When ever i try to access my client. All I get is a blank screen with only mouse working. I am very clue less about the problem, Can I find out this error. Regards, Vijay Shanker Dubey

3 8

An odd IPMI problem
by m.roth＠5-cent.us 11 Mar '10

11 Mar '10

Well, we're figure the board's got problems, but I installed OpenIPMI a couple weeks ago, and fired it up as a service, then added a cron job. That all ran well until last evening; we came in to find 5 zillion emails complaining Unable to open SDR for reading I worked my way through logs, and googling, and then trying to run ipmitool by hand, and it complains there's no such device as /dev/ipmi[three versions]. More googling, and down to modprobe, then insmod, of ipmi_si. Then trying to give it parameters, and it continually comes back (after 5 min of trying) with "No such device". One thing I note: after I found the docs for IPMI, I found the list of parms <http://www.mjmwired.net/kernel/Documentation/IPMI.txt>, and gave it, among other things, the slave_attrs. Then I look at dmesg and /var/log/messages... and it seems to be utterly ignoring that parm. That is, I say (and get) $ insmod /lib/modules/2.6.18-164.11.1.el5/kernel/drivers/char/ipmi/ipmi_si.ko ports=0xca2 slave_addrs=0x10 insmod: error inserting '/lib/modules/2.6.18-164.11.1.el5/kernel/drivers/char/ipmi/ipmi_si.ko': -1 No such device and in the log Mar 10 11:24:36 south kernel: IPMI System Interface driver. Mar 10 11:24:36 south kernel: ipmi_si: Trying hardcoded-specified kcs state machine at i/o address 0xca2, slave address 0x0, irq 0 Mar 10 11:26:28 south kernel: ipmi_si: There appears to be no BMC at this location Mar 10 11:26:28 south kernel: ipmi_si: Trying SMBIOS-specified kcs state machine at i/o address 0xca2, slave address 0x20, irq 0 Mar 10 11:28:20 south kernel: ipmi_si: There appears to be no BMC at this location Mar 10 11:30:12 south kernel: ipmi_si: Unable to find any System Interface(s) Notice that it's looking at slave_addrs of 0x0 and 0x20, *not* 0x10. Any clues? mark

4 4

unable to get domain status from libvirt & KVM
by Tom Georgoulias 11 Mar '10

11 Mar '10

I have a python script that monitors the VMs on physical host servers running Xen, but the script doesn't work properly on a server I just built with KVM. The script runs as a non-root user and simply gathers some details on the status and names of the domains running on the host. Both Xen and KVM servers are running the same version of libvirt (libvirt-0.6.3-20.1.el5_4) and have the same, default /etc/libvirt/libvirtd.conf config file. To troubleshoot, I've been running python interactively. Here's how my Xen servers behave: $ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [0, 3, 15, 16, 21, 24, 26, 30, 32, 36, 38, 41, 43, 45, 47, 49, 51, 55, 63, 67] >>> When I try the same thing on the KVM server: $ python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) 14:33:07.303: error : No vport operation path found for host0 14:33:07.320: error : No vport operation path found for host4 14:33:07.325: error : No vport operation path found for host3 14:33:07.367: error : No vport operation path found for host1 14:33:07.368: error : No vport operation path found for host2 >>> domains = conn.listDomainsID() >>> print domains [] >>> (The vport stuff is weird, but I found this posting that suggests its harmless (http://www.mail-archive.com/libvir-list@redhat.com/msg17477.html) so I'm ignoring it.) However, when logged in as root on the KVM server, it works just like my Xen servers: # python Python 2.4.3 (#1, Sep 3 2009, 15:37:37) [GCC 4.1.2 20080704 (Red Hat 4.1.2-46)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import libvirt >>> conn = libvirt.openReadOnly(None) >>> domains = conn.listDomainsID() >>> print domains [1] Again, on the KVM server, plain old "virsh list" with the debug level set to "2" $ export LIBVIRT_DEBUG=2 $ virsh list 14:21:06.532: error : No vport operation path found for host0 14:21:06.550: error : No vport operation path found for host4 14:21:06.555: error : No vport operation path found for host3 14:21:06.598: error : No vport operation path found for host1 14:21:06.599: error : No vport operation path found for host2 14:21:06.615: info : No security driver available Id Name State ---------------------------------- Permissions in /var/run/libvirt: # ls -ld /var/run/libvirt/* srwx------ 1 root root 0 Feb 5 08:53 /var/run/libvirt/libvirt-sock srwxrwxrwx 1 root root 0 Feb 5 08:53 /var/run/libvirt/libvirt-sock-ro drwxr-xr-x 2 root root 4096 Jan 21 14:38 /var/run/libvirt/network drwxr-xr-x 2 root root 4096 Oct 20 18:50 /var/run/libvirt/qemu Can someone provide some tips on what else I can check, if this might be a bug, or point out any mistakes that I might've made? Any help is appreciated. Thanks, Tom

3 3

About addition of hardware and kernel
by Jose Luis Marin Perez 11 Mar '10

11 Mar '10

Dear Sirs I have a ML370 G4 server with 1 CPU Intel (R) Xeon (TM) 3.60GHz and 2GB of RAM with operating system CentOS 4.7 and kernel 2.6.9-78.0.22.ELsmp We have acquired 1 CPU and 2 GB of RAM additional to improve the functioning of the server, my question is whether the current kernel can support the addition of hardware or if I need a new kernel or install any additional software. Thanks Jose Luis _________________________________________________________________ Discover the new Windows Vista http://search.msn.com/results.aspx?q=windows+vista&mkt=en-US&form=QBRE

4 6

RAID 5 on Install?
by Slack-Moehrle 11 Mar '10

11 Mar '10

Hi All, I cannot seem to find a resource that will allow me to RAID5 3 x 1tb drives on system install. Can this be done? -jason

3 2

FreeNX : forward audio from server to client ?
by Niki Kovacs 10 Mar '10

10 Mar '10

Hi, I setup a FreeNX server with a GNOME desktop, and I can access it from a client with the NoMachine client. Everything is running fine, and now I only have two problems left : audio and printing forwarding. I'll follow the "only-slay-one-dragon-at-a-time" rule and take care of audio first. Did anyone manage to forward sound with FreeNX ? Here, server and client are using CentOS. And yes, I did check the little "enable multimedia" checkbox on the client, but to no avail. Whenever I play a sound in the client session, it comes out on the server speakers. Any suggestions ? Niki

3 7

strange su behavior
by Uwe Kiewel 10 Mar '10

10 Mar '10

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi, I have a strange su hehavior on a CentOS 5.4 32Bit installation in a VMware ESXi virtualizied environment: If I am root and want to change the user to a non-root user, the system prompts me for a password: [root@halifax ~]# useradd test00 [root@halifax ~]# su - test00 We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. Password: [test00@halifax ~]$ logout [root@halifax ~]# su - test00 [test00@halifax ~]$ logout [root@halifax ~]# At this test procedure I just hit the enter key at the password promt. Do you have any idea for this behavoir? I expect to do so from root to any account _without_ being prompted for the password. Thanks, Uwe -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJLlVsjAAoJENs3frmum9swFTwH/1ulj7ZRETV/fAt/0NztXsn5 NJ7szhb+CPDxQCM49RdN6c8OUcZReVZsP1sTPCTiu6kvuNPm7vPhminuecIOEXA/ GUZC/6nS9YcHlFUbmO7nxpP2bbJHrrO2r9s4JdWftHP0YQUADNad9AN/jAQHd032 0xfp/vtAkj2PfIBt/J6h3taVwxx3Epb4gY2wuWYLRcJyDuzJLLD25OJVAOxuUaik RkNcpfiZM3Japq6Mb3kUGlYkdLf4+xxPCC/pwdVVC2fzSUVK9asmqq0pbu6KQfTc Lv5WwS6ENmY6eBbO5IcpILtC+LwBayjU50RWByaFl4uMcfQd9F9uVAdmnLW8/8c= =TNjq -----END PGP SIGNATURE-----

10 19

Yum errors on a new install
by Kevin Kempter 10 Mar '10

10 Mar '10

Hi all; I'm getting this the first time I try and run yum update on a new install of CentOS 5.4 (x86_64): Error: requested datatype primary not available My internet connection is working a 'yum clean all' does not help [root@localhost ~]# yum clean all Loaded plugins: fastestmirror Cleaning up Everything Cleaning up list of fastest mirrors [root@localhost ~]# yum update Loaded plugins: fastestmirror Determining fastest mirrors * addons: mirror.fdcservers.net * base: mirror.fdcservers.net * extras: mirrors.serveraxis.net * updates: mirrors.bluehost.com addons | 509 B 00:00 Error: requested datatype primary not available thoughts? thanks in advance...

1 0

Re: [CentOS] Help with Ruby on Rails setup using Centos 4
by James B. Byrne 10 Mar '10

10 Mar '10

On Wed, March 10, 2010 13:39, Todd Cary wrote: > James - > > I made a typo...see my post to Craig. And here is the error, so > maybe that gives you some salient info: > > [todd@centos4 hello]$ ruby script/server > => Booting WEBrick > => Rails 2.3.5 application starting on http://0.0.0.0:3000 > => Call with -d to detach > => Ctrl-C to shutdown server > [2010-03-10 06:26:48] INFO WEBrick 1.3.1 > [2010-03-10 06:26:48] INFO ruby 1.8.5 (2006-08-25) [i386-linux] > [2010-03-10 06:26:48] INFO WEBrick::HTTPServer#start: pid=20336 > port=3000 > /!\ FAILSAFE /!\ Wed Mar 10 06:27:24 -0800 2010 > Status: 500 Internal Server Error > no such file to load -- sqlite3 > /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `gem_original_require' > /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in > `require' > Do you have the sqlite3 (not sqlite) gem installed? -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

1 0

Help with Ruby on Rails setup using Centos 4
by Todd Cary 10 Mar '10

10 Mar '10

Before asking questions about Ruby on Rails setup on CentOS 4, I want to make sure that this forum is the proper place for those questions. Are there any members who can help? Many thanks... Todd -- Ariste Software Petaluma, CA 94952 http://www.toddcary.com/aristephotography/

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