Cloning an Ubuntu VM using Virtualbox

I was able to install Ubuntu on a virtual machine that I created with Oracle Virtualbox.  I installed Oracle XE, SOLR, and MongoDB. Since I will be testing master-slave for SOLR and MongoDB, I decided to clone my first VM. Here's what I did when cloning a VM and any issue that I encountered.

1. Open Oracle VM Virtualbox Manager.
2. Click on the VM that you want to clone.
3. Click on Machine > Clone.
4. Enter the new machine name.
5. Check reinitialize the MAC address of all network cards.
6. Click clone.
7. After the machine is cloned, I had to change some settings. This step depends on your requirements:
1. Click on settings.
2. Click on Network.
3. Change Adapter 1 Attached to: to Bridged Adapter.
4. Change Name to the wired connection.
8. Start the machine by double-clicking on the name.

At this point, your machine should be up and running with a different IP address that you the source.

However, there might be an instance where you forgot to put a check to reinitialize the MAC Address. Here's the solution:

1. Start the VM.
2. Log into the machine.
3. Delete the file /etc/udev/rules.d/70-persisten-net.rules
4. Shutdown the VM.
5. In the Virtualbox Manager, click on the VM name.
6. Click Settings > Network.
7. Click on MAC Address refresh (the two-arrows at the end of the MAC address field).
8. Click OK.
9. Start the VM.

This helped me resolved the issue.