Difference between revisions of "Ubuntu"

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→‎Initial Setup: Added OS Install, Post OS Install etc
m (→‎Change IP Address: Correction)
(→‎Initial Setup: Added OS Install, Post OS Install etc)
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== Initial Setup ==
== Initial Setup ==
Much of this section is ''borrowed'' from http://www.howtoforge.com/perfect-server-ubuntu8.04-lts, its well worth a read!
Much of this section is ''borrowed'' from http://www.howtoforge.com/perfect-server-ubuntu8.04-lts and http://www.howtoforge.com/how-to-install-ubuntu8.04-with-software-raid1, they are well worth a read!
=== Enable Root ===
 
* Use the command <code> sudo passwd root </code>
This section will create a Ubuntu VM installed on one partition, software RAID'ed across two VMDK's (my ESX's storage isn't resilient, hence the software RAID across VMDK's on separate physical disks, if you've got resilient storage you should '''not''' use software RAID).
* Enter a strong password when requested
 
=== Prepare Virtual Machine ===
# Create a virtual machine with the following options (use Custom)
#* Guest OS: Linux > Ubuntu 32bit
#* CPU: 1
#* Memory: 756 MB
#* Disk: 36GB
# Then add a second 36GB disk on a separate physical datastore (if you intend to use software RAID)
# Attach Ubuntu install ISO to the CD-ROM
 
=== OS Installation ===
Follow the default or sensible choices for your locale, however, use the following notes as well...
* '''Configure the network'''
** Enter the server's hostname (not a FQDN, just the hostname)
* '''Partition Disks'''
** If setting up software RAID follow the steps below, otherwise just select "Guided - use entire disk and set up LVM"
**# Select "Manual"
**# Select the first disk (<code>sda</code>) and on the next screen, Yes, to "Create new empty partition table on this device?"
**# Select the FREE SPACE, then "Create a new Partition", use all but the last 2GB of space, and select "Primary"
**# Change ''Use as'' to "physical volume for RAID", and change the ''Bootable flag'' to "Yes", the select "Done setting up this partition
**# Select the remaining FREE SPACE on <code>sda</code>, and create another primary "physical volume for RAID", but '''not''' bootable
**# Select the second disk (sdb) and repeat the steps taken for sda
**# On the same screen, select the "Configure Software RAID" option, and then confirm
**# Select "Create MD device", then select "RAID1" (ie a mirror), then select 2 ''Active devices'', and 0 ''Spare devices''
**# Select both <code>/dev/sda1</code> and <code>/dev/sdb1</code> partitions, and then select "Finish"
**# Repeat to create a RAID volume using <code>/dev/sda2</code> and <code>/dev/sdb2</code> partitions
**# Now select the RAID device #0 partition (select the #1 just under RAID1 device line), and change the ''Use as'' and select "Ext3..."
**# Change the ''Mount point'' to /, then select "Done configuring this partition"
**# Now select the RAID device #1 partition (select the #1 just under RAID1 device line), and change the ''Use as'' and select "Swap area"
**# Then select "Done configuring this partition" then finally "Finish partitioning and write changes to disk", and confirm
**# Accept the "system will need to restart" complaints, after which the install will continue (note there's a little more to do more to do post install).
* '''Software Selection'''
** DNS Server - Required in order to configure split DNS, which is required for an exchange server
** OpenSSH Server - Required (allows you to Putty/SSH to the server)
 
 
=== Post OS Install Config ===
* '''Enable Root'''
*# Use the command <code> sudo passwd root </code>
*# Enter user password, and then a strong password for the root account
* '''Finish Software RAID config''' - only if configured during install
*# Start-up grub (by entering <code> grub </code> and enter the following commands...
*#* <code> device (hd1) /dev/sdb </code>
*#* <code> root (hd1,0) </code>
*#* <code> setup (hd1) </code>
*#* <code> quit </code>
*# Then edit the <code> /boot/grub/menu.lst </code> config file.  Go to the end of the file where the boot options are, and create a copy of the first option and edit the following lines
*#* <code> title </code> Add "Primary disk fail" or something similar to end
*#* <code> root </code> Change <code> hd0 </code> to <code> hd1 </code>
 


=== Change IP Address ===
=== Change IP Address ===

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