CloudLinux Kernel Wont Boot initrd Missing in grub.conf

[madihrb]

Hello,

I am using CloudLinux for years now and it is great product. We never had problem with cloudlinux unless the current one which is headache since 2 days.

When I convert cpanel centos to cloudlinux, after reboot my server will never reboot. From rescue mode, I removed the cloudlinux kernel my server worked perfectly.

Now here is my gub.conf, I want to boot with cloudlinux kernel, please keep in mind that initrd is missing in kernel and also the *.img file is not available in the /boot

# 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 (hd0,1)

#          kernel /vmlinuz-version ro root=/dev/md2

#          initrd /initrd-[generic-]version.img

#boot=/dev/sda

default=0

timeout=5

splashimage=(hd0,1)/grub/splash.xpm.gz

hiddenmenu

title CloudLinux Server (2.6.32-604.16.2.lve1.3.54.el6.x86_64)

root (hd0,1)

kernel /vmlinuz-2.6.32-604.16.2.lve1.3.54.el6.x86_64 ro root=UUID=1249db1c-7c02-4b68-b30e-d051806e6080 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=de-latin1-nodeadkeys SYSFONT=latarcyrheb-sun16 rd_MD_UUID=08a9343f:bd527607:40916d5b:25a59e89 crashkernel=auto rd_NO_LVM LANG=de_DE.UTF-8 rd_NO_DM rhgb quiet

title CentOS (2.6.32-573.1.1.el6.x86_64)

root (hd0,1)

kernel /vmlinuz-2.6.32-573.1.1.el6.x86_64 ro root=UUID=1249db1c-7c02-4b68-b30e-d051806e6080 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=de-latin1-nodeadkeys SYSFONT=latarcyrheb-sun16 rd_MD_UUID=08a9343f:bd527607:40916d5b:25a59e89 crashkernel=auto rd_NO_LVM LANG=de_DE.UTF-8 rd_NO_DM rhgb quiet

initrd /initramfs-2.6.32-573.1.1.el6.x86_64.img

title CentOS 6 (2.6.32-573.el6.x86_64)

root (hd0,1)

kernel /vmlinuz-2.6.32-573.el6.x86_64 ro root=UUID=1249db1c-7c02-4b68-b30e-d051806e6080 rd_NO_LUKS  KEYBOARDTYPE=pc KEYTABLE=de-latin1-nodeadkeys SYSFONT=latarcyrheb-sun16 rd_MD_UUID=08a9343f:bd527607:40916d5b:25a59e89 crashkernel=auto rd_NO_LVM LANG=de_DE.UTF-8 rd_NO_DM rhgb quiet

initrd /initramfs-2.6.32-573.el6.x86_64.img

[ighertesco]

Hello,

Please try to reinstall kernel package: $ yum reinstall kernel-2.6.32-604.16.2.lve1.3.54.el6.x86_64

initramfs file should be generated. Also please make sure that you have sufficient free space on /boot

[madihrb]

Thank you for reply, I already tried such commands, it is not working. Here is the below reply when I try yum reinstall kernel-2.6.32-604.16.2.lve1.3.54.el6.x86_64

root@server1 [~]# yum reinstall kernel-2.6.32-604.16.2.lve1.3.54.el6.x86_64

Loaded plugins: fastestmirror, rhnplugin, security

Setting up Reinstall Process

Loading mirror speeds from cached hostfile

* cloudlinux-x86_64-server-6: cl-mirror.veriteknik.com

Installed package kernel-2.6.32-604.16.2.lve1.3.54.el6.x86_64 not available.

Error: Nothing to do

[madihrb]

Well actually following command worked for me:
yum reinstall kernel.x86_64 2.6.32-604.16.2.lve1.3.54.el6

Thank You Igor Ghertesco

[morten]

Thanks for sharing this. It solved my issue too, but have not tested to reboot into the new kernel yet.

But, why was not initrd added correctly in the first place when doing a yum update?

I also got a warning with the cpuspeed:
kernel-2.6.32-604.30.3.lve1.3.63.el6.x86_64.rpm | 32 MB 00:09
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : kernel-2.6.32-604.30.3.lve1.3.63.el6.x86_64 1/1
Verifying : kernel-2.6.32-604.30.3.lve1.3.63.el6.x86_64 1/2
1:cpuspeed-1.5-22.el6.x86_64 was supposed to be removed but is not!
Verifying : 1:cpuspeed-1.5-22.el6.x86_64 2/2

Installed:
kernel.x86_64 0:2.6.32-604.30.3.lve1.3.63.el6

Failed:
cpuspeed.x86_64 1:1.5-22.el6

Complete!

[bogdan.sh]

We are really not sure how it interacts with initrd originally.

About the cpuspeed was supposed to be removed but is not - seems like somehow yum cached data and the rpm database got out of sync with each other. Please backup /var/lib/rpm database to be on safe side then try running following:

yum clean all

rpm --rebuilddb

yum erase cpuspeed

[morten]

So cpuspeed it not necessary with kernel 2.6.32-604.30.3.lve1.3.63.el6.x86_64 for example?

[bogdan.sh]

Yes, cpuspeed is not needed. Even more, it makes things worst in most cases as it reduce CPU speed to save the power. http://kb.cloudlinux.com/2014/12/hig...ing-kondemand/