How to create Ubuntu 11.04 Natty Narwhal LXC template

By Emanuelis, on June 2nd, 2011

First create a network configuration file:

lxc.network.type = veth lxc.network.flags = up lxc.network.link = br0

…and run lxc-create:

root@servukas:~# lxc-create -n natty-lxc-template -t natty -f /tmp/natty-template-network.conf debootstrap is /usr/sbin/debootstrap Checking cache download in /var/cache/lxc/natty/rootfs-amd64 … Downloading ubuntu natty minimal … … Copy /var/cache/lxc/natty/rootfs-amd64 to /var/lib/lxc/natty-lxc-template/rootfs … Copying rootfs to /var/lib/lxc/natty-lxc-template/rootfs …Please change root-password ! . . . → Read More: How to create Ubuntu 11.04 Natty Narwhal LXC template

How to install Windows 3.11 to VirtualBox on Ubuntu

By Emanuelis, on October 7th, 2010

Why? Because it is funny . . . → Read More: How to install Windows 3.11 to VirtualBox on Ubuntu

How to make MS-DOS 6.22 to stop consuming 100% CPU in VirtualBox on Ubuntu

By Emanuelis, on October 1st, 2010

So you have a MS-DOS installed to a virtual machine on your super new multicore computer and it consumes 100% of your CPU (well… 100% of one core actually…)? . . . → Read More: How to make MS-DOS 6.22 to stop consuming 100% CPU in VirtualBox on Ubuntu

How to install MS-DOS 6.22 to VirtualBox on Ubuntu

By Emanuelis, on September 30th, 2010

Why? Because it is funny . . . → Read More: How to install MS-DOS 6.22 to VirtualBox on Ubuntu

“mknod: `/lib/udev/devices/ppp’: Operation not permitted” when updating Ubuntu 10.04 on virtual LXC machine

By Emanuelis, on September 15th, 2010

Today I wanted to update my virtual LXC Ubuntu and I got an error: mknod: `/lib/udev/devices/ppp’: Operation not permitted . . . → Read More: “mknod: `/lib/udev/devices/ppp’: Operation not permitted” when updating Ubuntu 10.04 on virtual LXC machine

How to solve Redmine error “Permission denied – /etc/redmine/default/session.yml” on Ubuntu 10.04

By Emanuelis, on September 15th, 2010

After installing Redmine on Ubuntu 10.04 Lucid Lynx from repositories (apt-get install redmine redmine-mysql) I got an error: Permission denied – /etc/redmine/default/session.yml . . . → Read More: How to solve Redmine error “Permission denied – /etc/redmine/default/session.yml” on Ubuntu 10.04

Workaround “/usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?)” on diskless Ubuntu

By Emanuelis, on August 26th, 2010

When trying to “aptitude upgrade” a diskless Ubuntu 10.04 machine I gen an arror:

update-initramfs: Generating /boot/initrd.img-2.6.32-23-generic Running postinst hook script /usr/sbin/update-grub. /usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?). User postinst hook script [/usr/sbin/update-grub] exited with value 1 dpkg: error processing linux-image-2.6.32-23-generic (–configure): subprocess installed post-installation script returned error exit . . . → Read More: Workaround “/usr/sbin/grub-probe: error: cannot find a device for / (is /dev mounted?)” on diskless Ubuntu

KVM failed to start with error: internal error unable to start guest: chardev: opening backend “pty” failed

By Emanuelis, on August 25th, 2010

This is just a quick workaround.

After restarting my Ubuntu 10.04 server KVM virtual machines didn’t start. Tried manually:

virsh # start saturn error: Failed to start domain saturn error: internal error unable to start guest: chardev: opening backend “pty” failed

I needed a fast solution. Very fast googling and this gave me a . . . → Read More: KVM failed to start with error: internal error unable to start guest: chardev: opening backend “pty” failed

How to Install Oracle SQL Developer on Ubuntu 10.04 Lucid Lynx

By Emanuelis, on July 2nd, 2010

Download newest version of Oracle SQL Developer for other platforms (a zip file). Install sun-java6-jre, debhelper and sqldeveloper-package packages. Fix a “dos2unix: not found” problem.

Make a deb package from previously downloaded zip file.

emanuelis@ramune:~/tmp$ make-sqldeveloper-package sqldeveloper-2.1.1.64.45-no-jre.zip make-sqldeveloper-package: Building sqldeveloper package in “/home/emanuelis/tmp”.

Install this deb package as usual.

emanuelis@ramune:~/tmp$ sudo dpkg -i sqldeveloper_2.1.1.64.45+0.2.3-1_all.deb . . . → Read More: How to Install Oracle SQL Developer on Ubuntu 10.04 Lucid Lynx

How to fix “dos2unix: not found” on Ubuntu 10.04 Lucid Lynx with tofrodos

By Emanuelis, on July 1st, 2010

Just create two symlinks… . . . → Read More: How to fix “dos2unix: not found” on Ubuntu 10.04 Lucid Lynx with tofrodos

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