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1612 discussions

Re: [CentOS-virt] date problem on my virtual centos server
by Christopher G. Stach II 14 Apr '10

14 Apr '10

----- "John Berrocal" <johnstevebh(a)gmail.com> wrote: > I have a Centos server 5.4 64 bits with xen server, and It has 6 > virtual servers, windows 2003 and centos 5.4 64bits. > One of my servers have a special problem with the time. It is a centos > server 5.4 64 bits, with apache, and mysql and dokuwiki running. When > somebody update the content in the wiki apps, it take the time of the > server and always the time is forward than the real time, for example > right now the time of that centos server is and hour more than the > current time. I was changing manually the time, and also I update the > packages to fix any possible bug, but I still have the same problem. > I checked the time on the host server and it has the current time and > my other, > Have you ever had the same problem? Do you use NTP correctly? Is localtime set correctly? -- Christopher G. Stach II http://ldsys.net/~cgs/

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Connection stall when connecting to XEN guests
by Peter Hopfgartner 14 Apr '10

14 Apr '10

Hello I have a physical server (Dell Poweredge 1950III) running current CentOS 5.4 x86_64 and the XEN hypervisor, provided by CentOS. This machine has 2 virtual machines installed, both with CentOS 5.4 x86_64. Unfortunatly SSH connections coming both, from an external machine or from DOM0, regularly stall, for a period of some minutes. In other words, while working through SSH, at a given moment everything freezes and after some minutes thaws again. We have several other machines with similar hardware/software configurations, but none of these has similar stalls. Anyway, when attaching the console with "xm console <vm-name>" there are no stalls at all. Does anybody have any suggestion on where to start to trouble shoot this problem? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgartner(a)r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com XING : http://www.xing.com/go/invita/8917535

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Re: [CentOS-virt] Useless use of AllowOverride
by Christopher G. Stach II 14 Apr '10

14 Apr '10

----- "Luke Carrier" <luke.carrier(a)xinos.org> wrote: > So what, it's 2010? People still have to start somewhere, and being rude and > unwelcoming is not the right way to go about things. Please keep your rude > comments to yourself, or don't subscribe to mailing lists where people are > inevitably going to make mistakes? Aww, you're so sweet. Maybe there are some girls on the list you can impress with your unbounded kindness. Who says it's not the right way? Since we're going to start fielding off topic questions to waste everyone's time on a focused list, can you tell me why my foot hurts? I mean, I was just using it normally, like a foot. But now it hurts. Could it be cancer? Fungus? Maybe we can turn CentOS into a foot pain site and extend off topic threads instead of just letting them die after short and quick re-educations that anyone subscribing to a mailing list should be aware of by now. Maybe if all of you tarts who are in such an uproar about this used your time to contribute anything substantial, or anything at all (Luke, Nenad, John), you would have something. Since all of you are just consumers and none of you actually participate in any way other than to complain that someone was "rude", STFU. In the meantime, maybe you should join a Ruby dev list with all of your happiness and smiles. Together, you can change the world! -- Christopher G. Stach II http://ldsys.net/~cgs/

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Useless use of AllowOverride
by Manoj Rajput 14 Apr '10

14 Apr '10

Hello, While i m trying to start my apache server i am getting following error. [Wed Apr 14 01:47:58 2010] [warn] Useless use of AllowOverride in line 31 of /home/tomcat/conf/mod_jk.conf. [Wed Apr 14 01:47:58 2010] [warn] Useless use of AllowOverride in line 36 of /home/tomcat/conf/mod_jk.conf. Please let me know if you have any solution regarding this. Thanks & Regards Manoj

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date problem on my virtual centos server
by John Berrocal 14 Apr '10

14 Apr '10

I have a Centos server 5.4 64 bits with xen server, and It has 6 virtual servers, windows 2003 and centos 5.4 64bits. One of my servers have a special problem with the time. It is a centos server 5.4 64 bits, with apache, and mysql and dokuwiki running. When somebody update the content in the wiki apps, it take the time of the server and always the time is forward than the real time, for example right now the time of that centos server is and hour more than the current time. I was changing manually the time, and also I update the packages to fix any possible bug, but I still have the same problem. I checked the time on the host server and it has the current time and my other, Have you ever had the same problem? Thanks in advance for your answers -- John S. Berrocal

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Re: [CentOS-virt] Xen HVM domU won't start since updates to 2.6.18-164.15.1 kernels
by Christopher G. Stach II 12 Apr '10

12 Apr '10

----- "Aaron Clark" <ophidian(a)ophidian.homeip.net> wrote: > qemu: could not open serial device 'none' http://os-drive.com/files/docbook/xen-faq.html#serial_console_hvm Does the LV show that it's open (or ever changes state) when the VM attempts to boot? Did you try taking a snapshot of the LV and mucking around with the xen configuration to see if anything changes? Did you update anything else on the machine, like perhaps the BIOS? Can you mount the VM's filesystem? Is its partition table okay? How about the boot loader? -- Christopher G. Stach II http://ldsys.net/~cgs/

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kickstart + domU for static IP
by john maclean 07 Apr '10

07 Apr '10

I've set up a local webserver to store kickstart files for domUs. All parameters are respected apart from the network settings. DomU always gets DHCP. Can any one help to unwrap this one? Does one add hostname, ip, netmask and gateway values to the /etc/xen/blah.cfg file? # ---- domU kickstart file ----# url --url http://192.168.1.120/centos/5/os/i386 lang en_US.UTF-8 keyboard uk network --device=eth0 --bootproto=static --netmask=255.255.255.0 --ip=192.168.1.115 --gateway=192.168.1.1 --nameserver=192.168.1.1 --hostname=dns1 --onboot=yes rootpw blahblahblah firewall --enabled --port=22:tcp authconfig --enableshadow --enablemd5 selinux --disabled timezone --utc Europe/London bootloader --location=mbr --driveorder=xvda --append="console=xvc0" clearpart --all --initlabel --drives=xvda part /boot --fstype ext3 --size=100 --ondisk=xvda --asprimary part / --fstype ext3 --size=10240 --grow --ondisk=xvda --asprimary part swap --size=1024 --ondisk=xvda --asprimary %packages @base @core # sudo cat /etc/xen/dns1.cfg ramdisk = "/home/jayeola/virt/images/centos_domU/initrd.img" kernel = "/home/jayeola/virt/images/centos_domU/vmlinuz"name = "dns1" maxmem = 1024 memory = 1024 vcpus = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" disk = [ "tap:aio:/home/jayeola/virt/images/centos_domU/dns1.img,xvda,w" ] vif = [ "bridge=xenbr0,script=vif-bridge" ] extra = "text ks=http://192.168.1.120/dns1-ks.cfg" -- John Maclean 07739 171 531 MSc (DIC) Enterprise Linux Systems Engineer

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Re: [CentOS-virt] kickstart + domU for static IP
by Christopher G. Stach II 06 Apr '10

06 Apr '10

----- "john maclean" <jayeola(a)gmail.com> wrote: > I've set up a local webserver to store kickstart files for domUs. All > parameters are respected apart from the network settings. DomU always > gets DHCP. Can any one help to unwrap this one? Does one add > hostname, > ip, netmask and gateway values to the /etc/xen/blah.cfg file? If you mean before kickstart is even run: > extra = "text ks=http://192.168.1.120/dns1-ks.cfg" extra = "... ip=..." -- Christopher G. Stach II http://ldsys.net/~cgs/

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CentOS and Xen 3.0.3
by Gilberto Nunes 05 Apr '10

05 Apr '10

Hi I install CentOS 5.4 and try to use Xen.... But when I deploy some VM with Virt-manager and specify 2 or more VCPUS to use, when start the vm it start with just one CPU... On this VM I install Windows 2003 Server... This the file of VM: name = "Avision" uuid = "625139bf-1ad3-86fc-45e6-e8efbb9db643" maxmem = 2048 memory = 2048 vcpus = 4 cpus = "0,1,2,3" builder = "hvm" kernel = "/usr/lib/xen/boot/hvmloader" boot = "c" pae = 1 acpi = 1 apic = 1 localtime = 1 on_poweroff = "destroy" on_reboot = "restart" on_crash = "restart" device_model = "/usr/lib64/xen/bin/qemu-dm" usb = 1 usbdevice = "tablet" sdl = 0 vnc = 1 vncunused = 1 keymap = "pt-br" disk = [ "phy:/dev/etherd/e3.3,hda,w" ] vif = [ "mac=00:16:36:2f:fd:7c,bridge=xenbr0,script=vif-bridge,model=ne2k_pci" ] parallel = "none" serial = "pty" But, on windows I just see one CPU... I don't understand why this happen!! Thanks for any help -- Gilberto Nunes

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Kernel BUG
by Gilberto Nunes 05 Apr '10

05 Apr '10

Hi Every time I up a VM with Xen 3.0.3 on CentOS 5.4 I get this messages on kernel: Apr 5 09:03:07 zebra kernel: BUG: warning at lib/kref.c:32/kref_get() (Not tainted) Apr 5 09:03:07 zebra kernel: Apr 5 09:03:07 zebra kernel: Call Trace: Apr 5 09:03:07 zebra kernel: [<ffffffff8023824d>] kref_get+0x38/0x3d Apr 5 09:03:07 zebra kernel: [<ffffffff8025a440>] kobject_get+0x12/0x17 Apr 5 09:03:07 zebra kernel: [<ffffffff8024b57f>] blk_get_queue+0x1f/0x26 Apr 5 09:03:07 zebra kernel: [<ffffffff887198f7>] :blkbk:dispatch_rw_block_io+0x4db/0x5a2 Apr 5 09:03:07 zebra kernel: [<ffffffff80340368>] __next_cpu+0x19/0x28 Apr 5 09:03:07 zebra kernel: [<ffffffff8026082b>] error_exit+0x0/0x6e Apr 5 09:03:07 zebra kernel: [<ffffffff8028792a>] find_busiest_group+0x1db/0x44d Apr 5 09:03:07 zebra kernel: [<ffffffff802883c0>] dequeue_task+0x18/0x37 Apr 5 09:03:07 zebra kernel: [<ffffffff80288407>] deactivate_task+0x28/0x5f Apr 5 09:03:07 zebra kernel: [<ffffffff8026ef47>] monotonic_clock+0x35/0x7b Apr 5 09:03:07 zebra kernel: [<ffffffff80262dd3>] thread_return+0x6c/0x113 Apr 5 09:03:07 zebra kernel: [<ffffffff80340af5>] kobject_cleanup+0x39/0x7e Apr 5 09:03:07 zebra kernel: [<ffffffff88719d2c>] :blkbk:blkif_schedule+0x36e/0x456 Apr 5 09:03:07 zebra kernel: [<ffffffff887199be>] :blkbk:blkif_schedule+0x0/0x456 Apr 5 09:03:07 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Apr 5 09:03:07 zebra kernel: [<ffffffff80233bef>] kthread+0xfe/0x132 Apr 5 09:03:07 zebra kernel: [<ffffffff80260b2c>] child_rip+0xa/0x12 Apr 5 09:03:07 zebra kernel: [<ffffffff8029bdab>] keventd_create_kthread+0x0/0xc4 Somebody know what is going on???? Thanks for any help -- Gilberto Nunes

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