Linux, programming and more
Some days ago I wrote a similar post about nagios and lighty, now I decided to test Icinga on Debian Squeeze.
The installation was pretty easy:
1 2 | aptitude install lighttpd aptitude install icinga |
To use Icinga we need following modules:
The simple way to install grub/ grub2 from any linux live-CD or any other bootable medium.
Step 1: boot from linux live CD/DVD or even USB
Step 2: mount your hdd
Step 3: chroot in the mounted filesystem
Step 3: install grub
Step 4: reboot
1 2 3 4 5 6 7 8 9 | fdisk -l mount /dev/sda1 /mnt/ mount -t proc none /mnt/proc mount -o bind /dev /mnt/dev mount -t sysfs sys /mnt/sys chroot /mnt/ /bin/bash update-grub /usr/sbin/grub-install --recheck --no-floppy /dev/sda sync & reboot |
SUSE Syntax:
update-grub is debian and ubuntu little helper this execute the same as:
1 2 3 | grub2-install --recheck --no-floppy /dev/sda grub2-mkconfig -o /boot/grub2/grub.cfg mkinitrd |
There are a lot virtual emulators for windows, but most of them aren’t free and forbidden for commercial use. QEMU emulator released under GPL-license and works very well on windows. (I tested it only Windows Server 2003)
You can be downloaded from here – clickme
Some hardware just don’t work with ehci_hcd on Ubuntu and other distributions. My older mobile phone refused to work no matter what I did and want. After plugging the device nothing happened, doing dmesg showed me the following error:
Output from dmesg:
1 2 3 4 5 | [ 4494.828096] usb 5-1: new low speed USB device using uhci_hcd and address 41 [ 4495.244038] usb 5-1: device not accepting address 41, error -71 [ 4495.356066] usb 5-1: new low speed USB device using uhci_hcd and address 42 [ 4495.768030] usb 5-1: device not accepting address 42, error -71 [ 4495.768057] hub 5-0:1.0: unable to enumerate USB device on port 1 |
After searching a lot around web, I came to a conclusion that my device (mobile phone) doesn’t work with USB 2.0. So I tried to disable the ehci_hcd to make it work.
Since Karmic doesn’t use ehci_hcd as a module, modprobe -r ehci_hcd no longer works. This module was compiled into the kernel.
There is a trick to disable it. execute the following commands in terminal:
1 2 | cd /sys/bus/pci/drivers/ehci_hcd ls |
You will see one or two files with 0000:00:xx.x format. Execute the following command:
1 | sudo sh -c 'echo -n "0000:00:xx.x" > unbind' |
Replace the xx.x with the numbers displayed on your file/s. It should disable the ehci_hcd.
Another way:
1 2 | cd /sys/bus/pci/drivers/ehci_hcd/ sudo sh -c 'find ./ -name "0000:00:*" -print| sed "s/\.\///">unbind' |
Some days ago I started to give up my VMWare Workstation Server (version: 6.5.1 build-126130) that is running on Debian Lenny.
The reason was it’s very difficult to upgrade (you see my installation is a little bit outdated:)) and maintain.
The first step is to migrate to VirtualBox running. And I wrote this little tutorial to migrate VMWare VMDK Image to VirtualBox.
Step 1:
Start Virtualbox
Step 2:
File -> Virtual Media Manager
