Daily Archives: October 4, 2014

Ubuntu Server Installation and Initial Config Guideline

This is meant to be an outline not a complete guideline. It is based off on notes I took and may be helpful to keep me or someone else straight on the process in the future. There are some sections that are a bit light, but there is more out there on the web and half the problem for me at least is remembering this kind of outline. If I have the outline, I can jump off and find more. This particular post on the install is rather long, but it didn’t seem like a good idea to break it up.

Install,  using Ubuntu Server 12.04

Boot via the DVD that was created by burning the downloaded ISO to it.

Ubuntu Server 12.04 Screen
Ubuntu Server 12.04 Screen

Select Install Ubuntu Server, unless of course you want to test out RAM, a good idea if it has been freshly installed. Which was true in my case. So I ran MEMTEST overnight via this menu first.

Next you will be presented with screens to select language, location and keyboard type.
Ubuntu Server Select Language Screen
Ubuntu Server Select Language Screen
Ubuntu Server Select Location Screen
Ubuntu Server Select Location Screen

If you know what kind of keyboard you have select no to the next screen. If not selecting yes will put the keyboard through a test, having you press various keys to identify it.

Ubuntu Server Detect Keyboard Screen
Ubuntu Server Detect Keyboard Screen

 

Ubuntu Server, Select The Keyboard Screen
Ubuntu Server, Select The Keyboard Screen
Ubuntu Server Select Keyboard Layout Screen
Ubuntu Server Select Keyboard Layout Screen
Next the Ubuntu Server install will start loading additional components, this can take a few minutes…
Ubuntu Server Install, Installing Additional Components
Ubuntu Server Install, Installing Additional Components
 Networking Setup

Ubuntu Server will automatically configure DHCP. Later on, after the install, this will be switched to a static IP address.

Ubuntu Server Auto configuring with DHCP
Ubuntu Server Auto configuring with DHCP

Create a hostname for the computer. Choose something that makes sense for you. A really long hostname ( I think > 14 chars) can present issues with Windows when using Samba. It will truncate the name, just something to be aware of.

Ubuntu Server, Configure the Network, Create a Hostname
Ubuntu Server, Configure the Network, Create a Hostname
User and Password

You can set up a user next by filling out a username and password. After the installation you can add more users if you need to.

The first screen will ask for your name, this could be your real name.

Ubuntu Server Setup Users and Passwords Screen
Ubuntu Server Setup Users and Passwords Screen

Next you will enter your username. Something simple like your first name in all caps is a good choice.

Ubuntu Server Enter a Username Screen
Ubuntu Server Enter a Username Screen

Choose a decent password. Something not listed in a dictionary is a good choice, with some numbers and a capitalized letter, punctuation as well. One approach taken is to take two unrelated words that are easy to remember and concatenating them. Whatever you do, don’t lose it, I am not sure you can recover it unless you can reset it as root, provided you have that password.  In Ubuntu, you have to log in as a user to even execute sudo. So if you have one user and lose the password, it’s probably game over.

Ubuntu Server Choosing a Password
Ubuntu Server Choosing a Password

To encrypt or not to encrypt your home directory on your Ubuntu Server install. I chose no, it’s a server, I am not going to do much with the home directory. Encryption is nice, but it comes with a small speed cost of decoding, this could be a burden on a slow processor.

Ubuntu Server Encrypt Home Directory Question
Ubuntu Server Encrypt Home Directory Question
Time Zone

Where are you in the world?  I think the install is taking an educated guess as to where you are, so what it chooses may be correct, just double check. If not, set up your time zone via this drop down menu. After the install it is possible to install ntp which can keep the server clock sync’ed up with an atomic clock time.

Ubuntu Server, Check The Time Zone
Ubuntu Server, Check The Time Zone
Partitioning

Whole disk, LVM. Lots of options. I choose to wipe the disk clean and use LVM. I will be adding disks to this machine and with LVM, they can appear as one big disk, not mounting required. LVM is a thin layer of software that manages the Logical Volumes. Therefor it does consume a small amount of resources and must lower disk transfers slightly. One thing that I did noticed once with an LVM disk, is that I could not read it using a IDE to USB adapter. It was invisible to it. I have to try plugging that disk into a Linux machine at some point to see if I can read it’s contents. So it seems that LVM could complicate a recovery of a disk. Supposedly an advantage of LVM is that you can mirror copy the volumes and expand them across disk. I need to research this some more as it is new to me.

Ubuntu Server Guided Partitioning Using Entire Disk and LVM
Ubuntu Server Guided Partitioning Using Entire Disk and LVM

If you have more than one disk, you have to choose which one the OS will install to.

Ubuntu Server, Choose a Disk to Partition
Ubuntu Server, Choose a Disk to Partition

At this point in the install, I ran into an issue with the fact that the disk I was trying to use was originally used in another Linux machine with 3 disks used in LVM. Nothing I did seemed to work as it gave me a warning about the disk being a part of a 3 disk LVM set. I stopped the install and used a CD that came with a drive I bought years ago and wiped out the drive. Then I did the reinstall and successfully made it to the following confirmation screen. If all looks well you can hit Yes, if not hitting No will allow you to work backwards. Hitting Yes is final as disk writes will occur.

Ubuntu Server, Partitioning Disks, Confirmation Screen
Ubuntu Server, Partitioning Disks, Confirmation Screen
System Install, Configuring Updates and Installing Software

Once the partition in complete the OS will install, which will take several minutes.

Ubuntu Server Installing Base System
Ubuntu Server Installing Base System

There is an option to have automatic updates, this is a good idea, especially for a headless server. So it can take care of itself with a minimum of fuss.

Ubuntu Server, Configure tasksel for Automatic Updates
Ubuntu Server, Configure tasksel for Automatic Updates

Choose software to install. Open SSH is a must if you are to remotely shell into the server. Because I will be running OwnCloud on this unit and it uses a web interface and a database and PHP, installing LAMP Server is a must. I will also make a few folders that can be reached directly from Windows computers on the network, mostly for direct backups, so Samba file server is a must.

Ubuntu Server Software Selection
Ubuntu Server Software Selection

 

Final Steps for Ubuntu Server 12.04 install

The Ubuntu server install will prompt for installation of software. Install the following when prompted by the screen.

  • Open SSH
  • LAMP
  • Samba Server
 MySql Password

Because the LAMP Server (Linux-Apache-MySql-PHP)  installs MySql a password is needed for the “root” user of the database. During the process of configuring LAMP, a prompt will appear for a MySQL root password, make it something memorable in case you ever have to manage or do work with the database manually, or if a program asks for it, such as when doing a WordPress install.

LAMP Install Choosing a MySql Password
LAMP Install Choosing a MySql Password
GRUB

As the description for GRUB states this is the only install going in, so it safe to hit Yes and go ahead. Results may vary for you specific case. If you have a multi boot machine, GRUB will setup Ubuntu Server to load first, if you are configuring a multi boot machine.

Ubuntu Server GRUB Install
Ubuntu Server GRUB Install

The done screen, pull out the disk hit continue and the PC now will reboot, I went into the BIOS and did a few more things to it.

Ubuntu Server Installation Finished
Ubuntu Server Installation Finished
Additional  Steps in the BIOS

All BIOS are a bit different. Yours may not look the same, but should have similar settings. This is a Dell Dimension 2400. Configure the BIOS to ignore keyboard errors “Do Not Report”, important for unattended operation with a keyboard and monitor!

Setting BIOS to Ignore Keyboard Errors
Setting BIOS to Ignore Keyboard Errors

I also set “Remote Wake Up” to On as I will use Wake On LAN to wake this machine up remotely. I cover it here … Wake On LAN via Ubuntu Linux

Remote Wake Up Help Screen Description
Remote Wake Up Help Screen Description

I will set Suspend Mode to S3. This has worked well for me with Dell machines in the past. I am considering writing a CRON script that will suspend to RAM when the server is idle for a period of time, so setting this to what I want it to be now is a good idea.

Setting Suspend Mode to S3
Setting Suspend Mode to S3

If the power goes out and comes back on I want the server to go back to what ever state it was in, if off stay off, if it was on, restart. I have used this in the past and it does work well.

Setting AC Power Recovery to Last
Setting AC Power Recovery to Last
Final Steps for Install when the machine reboots

When you exit the BIOS, you be prompted for your username and password.

For good measure run the update and upgrade commands, if all is well they should complete without error.

sudo apt-get update
sudo apt-get upgrade
One of the first steps when configuring a server post-install is to set up a static IP address.

This is explained in the next post…

Configure Static IP and installing NTP

More Resources…

How to Make an Ubuntu File Server With Samba

on Youtube.

Plus … Find a decent Guide to Install Ubuntu Server here