CentOS 5 :: CentOS Auto Update Kernel And Reboot System?

Mar 17, 2010

I am an old days RH release user(from 6.x) and just switching back from Debian/Ubuntu to CentOS on some servers, but I can not understand the kernel update strategy currently enabled in CentOS.There are two boxes, with almost identical installation, but recently there was an auto update of kernel on one box. This auto update also seems to issue an auto reboot on the machine, which is unacceptable on server machines.

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CentOS 5 :: How To Prevent Kernel Upgrade On Reboot After Yum Update Kernel*

May 29, 2010

The server runs# uname -r2.6.18-128.4.1.el5However, today I executed yum update kernel*due to security advisory. I was just about to reboot the system when I realized that it runs VMWare Server Instance that will most likely fail to restart after kernel upgrade (I had a hard time fixing it after previous kernel update). Now I want to keep 2.6.18-128.4.1.el5 after reboot.I see that new kernel is scheduled for booting:

# cat /etc/grub.conf


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CentOS 5 :: KVM Guest Performance After Kernel/system Update?

Mar 30, 2011

Last I upgraded one of our cent 5 boxes which is running kvm with a mix of centos and windows VMs.After the update performance just tanked on the XP guest, but the others (including other windows VMs) are just fine.I checked with our good friend google and didn't really get any help there.We're hoping to NOT have to rebuild the XP guest, so I thought I'd check in here first.

This is CentOS release 5.5 (Final) with kernel

2.6.18-194.32.1.el5 #1 SMP (64bit)

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CentOS 5 Server :: Update Kernel On Centos 5.3?

May 21, 2009

I have centos 5.3 workin on mini itx atom 330. i have some problem with the network when i use Samba. when i move big files the network goes down. i wanna to install the new kernel on my centos to try to fix the network problem with the new drivers includes on the new kernel.

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CentOS 5 :: CentOS 5 Won't Boot After Kernel Update

Sep 10, 2011

I applied the Kernel update that showed in the updater via the GUI.It now won't boot anymore.Memory for crash kernel (0x0 to 0x0) notwithin permissible range.WARNING calibrate_APIC_clock: the APIC timer calibration may be wrong.

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CentOS 5 :: Yum Auto Update ?

Jun 23, 2011

I just run the Yum install to update my Centos 5, but system error information comes out to require the ntfsprogs = 1.13.1-1 file.

I attached it below. I download the ntfsprogs-1.13.1-1.i386.rpm form website, then installed it.

However, the error information is still there, I check the rpm has been installed in my computer.

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CentOS 5 :: Can't Reboot After Update?

Oct 22, 2009

I did a yum clean all then yum update and got all the 5.4 stuff at which point I rebooted it gets to the udev entry and dies. Any one have any sugestions on how to fix this?

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Red Hat :: Yum Update On CentOS 5.3 Upgraded My System To CentOS 5.4

Oct 29, 2009

I just ran a "yum update" on my CentOS 5.3 system. After a reboot, I noticed /etc/redhat-release show CentOS 5.4.

I thought yum upgrade was supposed to do that?

I wanted to simply patch my CentOS 5.3 system without turning it into CentOS 5.4 ... YET.

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CentOS 5 :: Allow One User To Reboot System Only?

Sep 8, 2011

I was wondering if anyone knew how to add a user/pass and allow them to issue the reboot command. Ideally, I dont want them to be able to see files/directories or anything else for that matter.I was thinking something along the lines of a chroot jail that has a single script that would call the reboot.

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CentOS 5 Hardware :: NIC Only Find Sporadic After Kernel Update To Kernel-2.6.18-164.el5

Sep 27, 2009

after update to kernel-2.6.18-164.el5 one of the 2 NIC's of my machine are only found at 1 of 4 reboots. Using the old one kernel-2.6.18-128.7.1.el5 all is fine. This are the to NIC's:

00:0a.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
00:0b.0 Ethernet controller: Intel Corporation 82557/8/9/0/1 Ethernet Pro 100 (rev 0c)

And the Intel one, makes the problems with the new kernel.

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CentOS 5 Server :: Update 5.3 - "Warning - Your System Is Actually Running CentOS Linux Version 5.3."

Jul 31, 2009

I have Centos 5.3 on our server When I log-in in webmin I have a message "Warning - Your system is actually running CentOS Linux version 5.3." In the next line I have a button "Update Detected Operating System" My question is Do I need to click the link and update Detected operating system? If I do, is it going to change any configuration on our server?

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CentOS 5 Server :: Unattended Reboot With An Encrypted Root File System?

Mar 31, 2009

Centos 5.3 includes Ext4 and improved support for encrypted file systems but it appears to be aimed at laptop/desktop systems, in that a password must be entered at boot time.

Is it possible to have a server with an encrypted root file system boot up without entering a password?

Mandos will do it...
...by serving up the password from another server...
...to a client loaded into the initial RAM disk environment...
...but it's not available on CentOS, and is only in Debian unstable.

Is there a similar (or any) solution for CentOS?

In particular, I'm envisaging encrypted virtual machines being served passwords from their virtual host.

Alternatively, the data that *really* needs to be protected could be encrypted while the system core remains unencrypted. But then the keys to decrypt the file system must be stored in the unencrypted portion, so this is not an effective method.

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CentOS 5 :: How To Update To Kernel Version >= 2.6.27 Via Yum

Oct 9, 2010

i'm currently running centos 5 with kernel version 2.6.18-92.1.22.el5 is there any way to update to kernel version >= 2.6.27 via yum ? if not via yum is it advisable to compile from source?

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CentOS 5 :: Yum Update FAIL \ Error When Want To Update System Via YUM?

Jul 13, 2010

I have a error when i want to update my system via YUMI execute the next command.sh@ yum -y updateYou could try using --skip-broken to work around the problemYou could try running:package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigestThe program package-cleanup is found in the yum-utils package.

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CentOS 5 :: Kernel Update Fails Dependencies

Apr 3, 2009

Update to 5.3 went OK a few days ago.Today there is updated kernel packages available but it fails dependencies on ecryptfs-utils.

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CentOS 5 :: Kernel Yum Update Installed But Not Working

Aug 17, 2009

I try to update my kernel to using
# yum update

After # yum update # rpm -qa kernel*|sort gives the following:
kernel-devel-2.6.18-128.1.14.el5 .....

This my grub.conf:
# 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/VolGroup00/LogVol00
# initrd /initrd-version.img

yum update installed:
CentOS (2.6.18-128.4.1.el5.centos.plusxen) and
CentOS (2.6.18-128.4.1.el5.centos.plus)

both are not working. I have to run the system using: 2.6.18-128.1.14.el5. Upon trying again #yum update it says that no packages are marked for update. Can I manually install the desired kernel? Do you know a reason why yum update is not automatically installing the proper kernel?

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CentOS 5 :: Yum Kernel Update - Unable To Boot

Oct 24, 2010

I had a Centos 5.5 system working great...and then due to crazy curiosity, installed the kernel update. Did this through the graphical interface, uncheck all update other than kernel. It downloaded, installed fine..After reboot now all I get is GRUB_ and then nothing else! I waited 3-4 minutes and had to shut down system. Have been googling around but thought I will post it here as well..When I boot with Win7 and use Ext2fsd to check, the boot folder is empty. Not sure if this is because ext2fsd does not read boot folder or it got wiped out by the yum upgrade process.

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CentOS 5 :: Unable To Boot New Kernel After A 'yum Update'?

Oct 26, 2010

I have recently run an update and now we are unable to boot the newer kernel. We get stuck as below;

Memory for crash kernel (0x0 to 0x0) notwithin permissible range
Red Hat nash version starting
Unable to access resume device (/dev/VolGroup00/LogVol06)


The kernel version we were at was 2.6.18-194.el5 and the update move us to 2.6.18-194.17.1.el5. I've done some googleing but I'm unable to work out exactly what I need to do. I'm guessing the new kernal is missing a module?

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Software :: CentOS - Yum Update Excluding Current Kernel Possible?

Mar 5, 2010

I am running CentOS 5.x and want to yum update, but I do not want to touch the kernel. How can I exclude the kernel update and prevent yum from removing my current kernel?

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CentOS 5 :: Server Only Detect 4 Cores After New Kernel Update?

Aug 28, 2009

I'm using Cpanel on my server, before upgrade to new kernel, i could see 8 cores on my i7 server, now i only see 4 cores, is there anything that i need to do to have another time the 8 cores?

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CentOS 5 :: Hyper-v Cannot Start After Upgrading Kernel Via Yum Update

Dec 19, 2009

I have 2.6.18-164.2.1.e15 running on Hyper-v. I did yum update and noticed that kernel is upgraded to 2.6.18-164.9.1.e15. If I try to boot into the new kernel it hangs with message first "switchroot mount failed" and then "kernel panic". This is probably related to Hyper-v drivers installed in the old kernel. First question: Do you think this is correct? Is it possible to somehow disable Hyper-v drivers so I can boot into the new kernel and then reinstall drivers? There is nothing in Microsoft documentation about uninstalling Linux Integration Components.

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CentOS 5 Server :: Update Kernel In Xen Virtual Machine

Jun 20, 2010

I installed the Centos 5.5 with XEN and put 03 virtual machines (Centos 5.5 too). I did this correctly, but I have a problem. In the virtual machine, I need update the kernel. I used "yum update kernel" and this is downloaded correctly and the menu.lst file is updated too, but the kernel not ran. I ran "grub-install /dev/sda" or "grub-install /dev/xvda" and received a error return. I read the device.map file and i ran "grub-install /dev/sde" and received a error return too.

The errors:
[root@vm01 ~]# grub-install /dev/sda
/dev/sda: Not found or not a block device.
[root@vm01 ~]# grub-install /dev/sde
/dev/sda1 does not have any corresponding BIOS drive.
[root@vm01 ~]# grub-install /dev/xvda
/dev/xvda: Not found or not a block device.

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CentOS 5 Networking :: Eth0 Now Broken After Last Kernel Update

Nov 23, 2010

I am currently working to get to a stable dual boot Win7/CentOS 5.5 configuration on a Dell Latitude E6510 with the Intel 82577LM chipset. I haven't gotten the Centrino N WiFI chipset working yet, but the Eth0 device was working just fine.However, yesterday I did a system update. I did not pay close attention, but I believe the update did mention networking, because I thought it might help me get my wireless going. Now, Eth0 fails with the message, "Determining IP information for eth0... failed; no link present. Check cable?" It does this at boot up and if we try reactivating it once the system is up. We have tried unstalling and re-installing the driver.The Window 7 boot sees the adapter and runs just fine. I was at a different site location yesterday when everything was working, but my co-workers and I can't help but think it might be related to the update yesterday, since everything worked prior to the update and Windoze 7 works fine with the adapter.

I have not been able to mount my NTFS harddrive on the CentOS side, despite installing fuse, and I don't have wireless, which makes it difficult to get access to new drivers. I also have a FAT32 partition that would be great to share between the boots for passing info, but I haven't found a way to mount a FAT32 partition in CentOS.

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Software :: Unable To Copy Files From CentOS To Pendrive - System Is Getting Hanged Leaving No Option Then To Reboot

Sep 23, 2009

I am using CentOS 5.3. output of "uname -a" Linux localhost.localdomain 2.6.18-92.el5 #1 SMP Tue Jun 10 18:49:47 EDT 2008 i686 i686 i386 GNU/Linux

My kernal version is kernel-2.6.18-92.el5

Whenver i try to copy files from my centos to pendrive ( 2gb, kingston datatraveller) my system is gettin hanged leaving no option then to reboot. i tried from the terminal also, and as a diffrent user also. but same results. sometimes i can copy files of small size. but when i go above 5 mb..system hangs..

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CentOS 5 :: Kernel Panic After Update - Not Syncing Fatal Exception

Apr 2, 2009

After update to 5.3 and reboot I got this error. googling for it I found that it is a known bug in kernel REHL 5.3 and there is also a patch for it [URL]. I am very new to linux, so how to apply, or just wait for a new kernel?

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General :: Auto Reboot Smoothwall System Box?

Jul 13, 2010

I have a smoothwall linux box that I need to setup an automatic reboot daily. Can anyone point me in the right direction to begin.

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CentOS 5 :: Software RAID Auto Sensing Auto Rebuild Possible?

Jul 23, 2010

I recently installed a server with Software RAID. I tested by powering it down, unplugging one drive and powering it up. Magically, it worked!I found out later that I have to manually add individual devices like md1 to sda2 md2 to sda4. I got all of them added and rebuilt but my question is: Is there a way to make it so that if I "removed" a drive and put it back, the system will senses the new drive and rebuilds based on some internal table?

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CentOS 5 :: Install, Recurring Kernel Panics Crashing System?

Dec 27, 2009

Recently switched my home server from Gentoo to CentOS and have been getting kernel panics consistently since I made the server "live". The machine was built with all new hardware. I'll post relevant configuration info and picture of the kernel panic below. So far all kernel panics have been with kernel "2.6.18-164.9.1.el5.centos.plus", right now I am testing with the kernel listed below to see if it does the same thing (2.6.18-164.9.1.el5).

justin@empire justin $ uname -rmi
2.6.18-164.9.1.el5 x86_64 x86_64
justin@empire justin $ rpm -qa |grep kernel |sort


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CentOS 5 :: Save To Update A Production System With Xen/drbd?

Jun 23, 2009

i have problems with my failover machines and cant locate the cause. The last update is quite some time ago.So will it hurt my configuration when I do an yum-update? I have 5 Xen VM on each machine, also they replicate with drbd and heartbeat. Can I just update the dom0 and leave the VM untouched inside?

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CentOS 5 :: What Will Happen If A System Has A Hard Boot While Yum Update

Aug 10, 2011

i want to know two thinsg about yum update

1) does it overwrite existing configuration files that is will i need to reconfigure every service after running yum update

2) If somebody pushes the reset button or electricity to the system is reset while yum update is running what will happen i think there can be two stages to that

a) if it is still downloading while the electricity to system is reset

b) it is installing while electricity to system is reset

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