Markus Blog

error: kernel image does not exist: /boot/hypervm-xen-vmlinuz

If you have a CentOS Xen Dom0 and experiencing this problem “error: kernel image does not exist: /boot/hypervm-xen-vmlinuz” after upgrading Xen kernel on HyperVM based VPS, here is how to fix it: More »

CPanel Problem Upgrading MySQL 5

Several months ago I had problem on upgrading CPanel’s MySQL 4.1 to MySQL 5. The problem was occurred on Centos 5 OpenVZ based VPS. Since someone contact me at WebHostingTalk forum asking about the same problem so I decided to re-try again the steps to fix the problem. Hence I post it here too, for future and general purposes

ok, do this at your own risk backup your mysql data first!

the steps i do:

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Checking Your Linux Centos Version

To check your Linux Centos version, just type:

cat /etc/redhat-release

it will show you the information like this:

CentOS release 5 (Final)

Adding yum repositories on Linux Centos

On default Centos installation, your OS will have a few yum repositories which are the official Centos repo. To add additional 3rd party repositories you can modify your /etc/yum.conf and add these configurations: More »

Creating /dev/random

Somehow in some Linux Centos installation the /dev/random is missing. The problem is some software needs it to working well. Here is how to create it:

mknod /dev/random c 1 9

Other devices might be missing to such as /dev/urandom, /dev/null and /dev/ptmx if you need those device here is how to create it:

mknod /dev/urandom c 1 9

mknod /dev/ptmx c 5 2

mknod /dev/null c 1 3
chmod +666 /dev/null