Tags: [[Lcbru Software Category]] [[Ubuntu Upgrade Summary]]

== Overview

Upgrade Ubuntu 14.04 to Ubuntu 16.04 – Server Upgrade

To check the version of Ubuntu

    {{{lsb_release -a }}}

Upgrade instructions 

1. Make your server system up-to-date as follows:

    {{{sudo apt-get update && sudo apt-get dist-upgrade }}}

Click on Y when necessary.
When messages appear scroll down and press q for quit

2. Then reboot your system to finish installing updates.

    {{{sudo init 6 }}}

3. First, install the update-manager-core package using the command below that is if it is not yet installed on your server:

    {{{sudo apt-get install update-manager-core }}}

4. After that, edit this file, /etc/update-manager/release-upgrades using your favorite editor and set Prompt=lts

    {{{sudo vi /etc/update-manager/release-upgrades }}}

5. Next, start the upgrade process as follows:

    {{{sudo do-release-upgrade -d}}}

Click on Y and Enter when necessary.

Finally you will get notification to restart VM.

6. At this point you have to login the VM using the VSphere Web Client

    {{{https://uhllmvc01:9443/vsphere-client/#extensionId=vsphere.core.viVms.domainView}}}

7. Find the VM network inteface by running 

    {{{ifconfig -a}}}

It will be something like enp0s17 or ens32

8. modify network file

    {{{sudo vi /etc/network/interfaces}}}

replace all instances of eth0 to to network interface found in previous step

9. reboot VM

    {{{sudo reboot}}}

    {{{sudo /sbin/reboot -f}}}