CentOS 5 :: Unix Timer Fast In Virtualbox 3.06
Oct 12, 2009
I installed centos 5.3 with last update in Virtualbox 3.06. Everything looks quite good except the unix time. It's very fast than normal. I even couldn't make ntpd work.
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I also modified the menu.lst files as following: kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/vg00/lv00 rhgb quiet divider=10 But it still dosen't work. how to sync the local time in the virtualbox? It looks like a bug in current kernel as other linux with newer kernel don't have such problem.
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Oct 22, 2010
I am interested in running Linux on my Mac Pro (8-core, 24 GB RAM).
What are the main caveats one should expect? Can all hardware be used natively after booting, say Linux or FreebSD?
Does Solaris run on this type of machine?
My use case is mostly Mail, instant messaging, web browsing and network simulation (hence this machine) and I value interactivity under full system load the most. How is interactivity under full load in Linux? My experiences with Debian "lenny" showed delays when task switching of up to 1.5 seconds. May I should look at FreeBSD?
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Jan 18, 2010
I run faster virtualbox I must do I install kernel server? my cpu does not support kvm
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Mar 20, 2009
I converted a PXE boot environment to CentOS 5.2 (64 bit). It is used to install various flavors of Linux. The default timer within the menu is configured for 10 seconds. Can anyone recommend a version of syslinux that is compatible with CentOS 5.2 (x86_64) in which the menu timer issue has been resolved?
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Sep 1, 2009
I'm running CentOS 5.3 on a laptop and there are numerous warnings in the dmesg output that look like:
Warning Timer ISR/0: Time went backwards: delta=-252671169 delta_cpu=-248671169 shadow=6729603658291 off=235680520 processed=6730092000000 cpu_processed=6730088000000 0: 6730088000000
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May 4, 2009
I was try to compile the drirver from cd asus, but my lan card still not detected in centos 5.3. when i bringing up eth0 its show like : "the atl2 device eth0 does not to be present, delaying initialization."iwas suft on google some driver but all driver just to centos 5.3 when i install the rpm it does not work. i love centos i dont want to change my lovely centos.
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Jun 25, 2011
i have a centos 5 and i cant access to the LAN or Internet because , i cant create a network connection , i try to say My Ethernet dont appears,and i cant add any connections.i id thisTerminal:Quote:sudo iwconfig
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Oct 23, 2009
I have some virtual machines running with CentOS 5.3 (32 bit) and everything works as expected. To test a possible upgrade I took one of then and did yum clean all yum update after rebooting I get a kernel panic with the following message:
MP BIOS BUG : 8254 timer not connected to APIC IO I know that I can change the boot command not to use APIC and after that the machine boots again but I doubt that there has been any change to the virtual APIC implementation during the upgrade of the OS. Is there anything that iI should exclude from upgrading while working in a vm? I use VMWare Player 2.5.3 build-185404 on a 64 bit Ubuntu 9.04 as host.
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May 4, 2009
I am using asus p5ld2-x/1333 motherboard,I installed the centos ,Centos saw other drivers but didn't see ethernet card.I am not connection the internet.
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May 11, 2010
What can be the cause of this error.
dmesg | grep -i time
ACPI: PM-Timer IO Port: 0x408
Calibrating delay using timer specific routine.. 4658.19 BogoMIPS (lpj=2329098)
Using local APIC timer interrupts.
[code]....
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Jun 28, 2009
Did a netstat -an got this
Active UNIX domain sockets (servers and established)
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Aug 27, 2010
I just ran into a weird problem with a CentOS 5.5 64-bit server running VirtualBox 3.2.8 (I would run Vmware Server 2.0.2 if not for the well known fact that Vmware doesn't care about its Server line anymore and it doesn't run on CentOS > 5.3 without major splits). I currently have two guests in that VirtualBox setup, a CentOS 5.5 64-bit and a Fedora 13 64-bit. The CentOS 5.5 guest shows less memory available than configured. If, for example, I give the virtual machine 512MB of memory the guest OS only recognizes 380MB. If I give it 768MB it only recognizes 637MB, and so on. I don't have that problem on the Fedora guest - 1024MB configured, 1024MB available.
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May 7, 2010
My wireless seems to be fast for a good 30secs then bang takes good while to load the next page almost as if it's disconnecting and then reconnecting/scanning reconnecting. Why cant it stay connected. I have WAP PSK security here is my network setting please let me know if I should change any of them:(side not is there a way to fix this problem occuring so frequently it says on the wiki that it should only occur once in a whilce https:[url].....
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Nov 10, 2009
following situation and configuring authentication for Windows users on my CentOS clients please:IHAC WIN2003 R2 Domaincontroller with ALL my users and groups maintained there. For Usermapping (SID to UID/GID) I want to use IMU which is included with WIN2003 R2 srv and extends my Active Directory schema for UID, GID, NIS Domain etc. I want now authenticate my Windows users on my CentOS clients via their "domainnameusername" and passwords on the CentOS clients.
I also have a NAS server which has usermapping integrated and resolves the Windows SID's to the UID/GID's configured within the IMU schema extensions. Now I have no idea to setup my CentOS clients to use winbind, PAM and LDAP (IMU supports LDAP queries for UID/GID resolving) WITHOUT needing any Samaba Server or functionality.
* Do I need to configure the smb.conf file because my usermapping is done on the NAS Server and I want to resolve my Windows Users/Groups UID/GID's from IMU via LDAP?
* Do I (just) need to Join the AD (2003 native) or even using Kerberos with generating ktpass.exe keytab files (what is needed/recommended and what is the difference?) Can I authenticate the users without using Kerberos?
For e.g. my username is "domainuser_a" and within the IMU the UID is set to "12345", I don't want Samba/winbind to do usermapping again based on the configured values in the smb.conf file. Some hints would be really nice for me to understand how exactly it works and what is needed...
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Nov 7, 2010
Its 2 weeks i'm trying to configure freeradius2 on centos5 64bit after installed it from yum.all seems working, but i cant authenticate unix users.after digging in many sites its simply cant find user name and password ( ++[unix] returns notfound )Also how can i paste here all the radiusd -X log lines? i can't find any
radius.log file.
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Sep 11, 2010
I have setup a Centos5.5 VMWare guest with Samba and Winbind for Active Directory integration, using GUI tools. Authentication works flawlessly, with automatic home directory creation. What I want to achieve now is using local UNIX groups to controll access to shared folders, to avoid bothering AD administrators with groups management. This is my smb.conf global section:
workgroup = COGITANS
password server = domainserver.hq.cogitans.it
realm = HQ.COGITANS.IT
security = ads
[code]....
'finance' is a local UNIX group where I added user 'COGITANSalberto' (I also tried with 'alberto') as a secondary group (primary group is 'domain users' and it cannot be changed). I am sure the user is added, because it is listed in 'getent group'. If I specify user COGITANSalberto in valid users it works, i.e. only that use can access the share, the others get a NT_STATUS_ACCESS_DENIED error. But if I use +finance, access is denied to everybody, and this is the log:
[2010/09/11 14:12:37, 10] smbd/share_access.c:user_ok_token(211)
User COGITANSalberto not in 'valid users'
[2010/09/11 14:12:37, 2] smbd/service.c:make_connection_snum(617)
user 'COGITANSalberto' (from session setup) not permitted to access this share (finance)
[code]....
It seems like winbind cannot recognize finance as a local group. For the same reason, I guess, 'force group = finance' does not work either (files are created with 'domain users' group ownership). My /etc/nsswitch.conf:
passwd: files winbind
shadow: files winbind
group: files winbind
Grants and ownership on the '/repositories/shared/finance' folder are
root:domain users with permissions 775
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Dec 3, 2010
Following msg is displayed
INIT: Id "x" respawing too fast:disabled for 5 minutes
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Dec 12, 2009
Installing 11.2 from KDE LiveCD on an IBM ThinkCenter with 3.2Gb CPU and 1Gb RAM. Ubuntu 9.04 on first two partitions. I go through the configuration, click to 'install': Install display bars remain blank. After 2-3 minutes, black screen with scroll of attempted installation pieces and the error message: "Respawning too fast. Disabled for 5 min." Freeze.
Other posts mention problem with init. But this is happening with the install so not able to address that. No apparent md5chksum for LiveCDs. No mention of this problem in installation help guide. Does anyone know how to deal with this? If you need more info, I will provide. Though it seems this is not an unusual problem when booting an installed system, there's no mention of it happening during installation.
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Mar 9, 2010
i would like to install CentOS 5.3 on my VirtualBox?
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Jul 5, 2010
I decided to take centos 5.5 for a testdrive. I download the live cd iso and attempted to boot the system via virtualbox on my mac os 10 system. I get the blue boot screen and choosing either the graphical boot or text boot gets me no where, the blue screen remains and nothing happens). Virtualbox is able to boot other linux systems fine so I am not sure if this is a centos issue or centos/virtualbox issue.
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Aug 26, 2010
I installed CentOS however during package selection, I deselected every option because I don't need or want the bloated dependencies however now when I try and install a 3rd party RPM from Oracle (VirtualBox), it fails:[root@vbox ~]# cat /var/log/vbox-install.log ** Compiling vboxdrvMakefile:159: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR=<directory> and run Make again.
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Feb 23, 2009
i have been using samba to gain access into windows computer through my pc which has fedora 8 ..can i access the unix machine from another unix machine? is yes then what is the procedures ?
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Oct 24, 2009
I am trying to learn about networking and am looking to set up a mini network between three bare bones Centos machines in Virtualbox. I set up the machines with a static IP. In the Virtualbox I am using NAT and have the IPs as follows
Centos-1
IP: 10.0.2.15
Gateway: 10.0.2.2
DNS: 10.0.2.3
Centos-2
IP: 10.0.2.16
Gateway: 10.0.2.2
DNS: 10.0.2.3
Centos-3
IP: 10.0.2.17
Gateway: 10.0.2.2
DNS: 10.0.2.3
On all machines i can ping google.com, and yum updates, but I can not ping any other machine. It says they are unreachable. NOt really sure what to do. Any help would be much appreciated.
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May 6, 2011
I want to install a Centos 5.0 Virtualbox for Windows 7 x64. Can someone please let me know where I can go to get that, because I would like to have the virtualbox to further understand how LINUX works. I have taken a course in Redhat Enterprise Linux Computing Essentials, and I enjoyed using LINUX. So that is why I am searching for a 5.0 free download of Virtualbox.
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Aug 31, 2009
I have installed a recent version of CentOS 5 (kernel is 2.6.18-128.el5) as VM in VirtualBox on a Windows 2008 server. When CentOS is totally idle, the CPU on the host (windows) machine is totally pegged from the VirtualBox process. I have read on some other forums that this is a problem with the clock running at 1000Hz and that recompiling the kernel configured with the clock at 100Hz will fix, or at least minimize the problem.
Has anyone else seen this problem? Can someone point me to a good set of instructions on rebuilding the kernel? I followed one set of instructions, but it wasn't for CentOS. After I building everything I was supposed to and copying files over the System.map* and vmlinuz* in the /boot directory (I think I screwed up that one), I went to modify the lilo.conf per the instructions, but I couldn't find it.
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Jan 15, 2010
I am running a Centos 5 x86_64 guest with VirtualBox 3.1.2.The virtio modules are loaded, but the virtual interface is not detected.Anyone else use the new virtio network drivers with virtual box and know how to get this to work?
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Jan 21, 2010
I have installed the CentOS 5.4 Virtualbox, I downloaded the dvd.iso on my (windows xp) and I installed it straight from there.
Installation went ok, but whenever I start the Centos it boots from the dvd.iso and force me to install or upgrade it again.
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Feb 15, 2010
I have 2 Centos 5.4 builds...one is x64 and the other on aother box is 32 bit...Both are running in virtual machines with version 3.1.4 Virtualbox.
I have tried on both versions to install the guest additions and on each the terminal comes up briely and then does not install...No error messages.
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Oct 28, 2010
I updated my system to the latest version - 5.5. After that I could not install VirtualBox. I was thinking, trying to fix, googling... it over for hours... Finally I found the reason. VirtualBox installer searches for the source kernel at /lib/modules/2.6.18-194.17.4.el5/build, and it can not. Look into /lib/modules, I have some kernels such as:
- 2.6.18-194.17.4.el5
- 2.6.18-194.17.4.el5debug
- 2.6.18-194.17.4.el5xen
... and more old ones.
At that time, I booted on 2.6.18-194.17.4.el5 kernel. But inside that directory, there is no build or source (directory/ file). Then I looked into 2.6.18-194.17.4.el5debug, and it had. So I typed: ln -s /lib/modules/2.6.18-194.17.4.el5debug/build /lib/modules/2.6.18-194.17.4.el5/build
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Apr 27, 2011
I use CentOS under VirtualBox. There are Guest Additions, but for Ubuntu are
virtualbox-ose-guest-utils and virtualbox-ose-guest-x11
There are GA replacements, better than GA (no problem with AppArmor). Are CentOS replacements ?
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