Lesson 2

Date: 1/30/2019
Linux installation and upgrade
Linux System Administration


Ubuntu Interactive Installation (Exercise)

  • Click onto kvm1 in the KVM manager. It will bring up a virtual console for the VM with the installer running. After accepting 'English Language', press F4, which stands for "Modes" in the installer bottom menu line, and scroll down to "Install a minimal virtual machine" selection, press ENTER:

    1. 2.

  • Choose "Install Ubuntu Server", and press ENTER.

  • Choose language: English, United States. Choose 'No' for detecting keyboard layout, USA for the origin of the keyboard, USA for keyboard layout. In 'Configure the network' menu, set 'kvm1':

    1. 2. 3. 4. 5. 6.



  • When the installer prompts you, set a new user account, 
                      name: hostadm
                  passwd: unisys
    Accept the "weak password" when prompted.
    1. 2. 3.

  • In 'Configure the clock', choose Eastern in the time zone list.

  • In the partition disks menu, select 'Guided - use entire disk' partitioning method.
    1. 2. 3.

  • Choose no encryption for home directory.

  • Select "No automatic updates".

  • Do not select any additional software to install. Keep everything in the list unchecked:



  • When prompted to Install the GRUB boot loader, choose the default option, "Install the GRUB boot loader to the master boot record" .

  • Accept setting the system clock to UTC.

  • Click on 'continue' when the installation completes.

  • After the system reboots, login as user hostadm

  • Install SSH server by using apt 
    sudo -s
apt-get install openssh-server

  • Install the latest 4.x Linux kernel available in Ubuntu 18.04 LTS repository: 
    apt-get update
apt-get install linux-virtual

  • Edit file /etc/default/grub and increase the GRUB prompt timeout from 2 to 10: GRUB_TIMEOUT=10: 
    GRUB_TIMEOUT=10
  • Change the value of GRUB_TIMEOUT_STYLE from hidden to menu 
    GRUB_TIMEOUT_STYLE=menu
    Note: you can use one of the available editors, for example nano or vi. If there is no nano editor, install it first, then edit file /etc/default/grub: 
    apt-get install nano
nano /etc/default/grub


  • Run the commands to update the boot loader configuration, then reboot: 
    update-grub
reboot
    You should be able to see the boot loader prompt when the system boots up.

  • Login to kvm1 and make sure it is running the kernel you just have installed: 
    uname -a
    It should show Linux kvm1 4.15.0-44-generic...

  • Uninstall the old kernel: 
    apt-get remove linux-image-4.15.0-29-generic 
apt-get remove linux-headers-4.15.0-29 
update-grub

  • After you are done with the exercise, shutdown the virtual machine by issuing shutdown in its command prompt: 
    shutdown now -h


    References
    Ubuntu Installation Guide

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