Prerequisites
- Ubuntu 16 running in VirtualBox
VirtualBox Preferences
In VirtualBox Preferences define Host-only adaptor (should already exist and default to the following)
- Ip: 192.168.56.1
- Netmask: 255.255.255.0
- DHCP: Enabled
Create K8Master Node
Create VM
Create a VM with the following:
- 2 GB MEM
- 10 GB disk
- user: test
For Networking assign the following:
Adaptor 1: NAT
Adaptor 2: Host-only adapter (vboxnet0)
For Audio: Disable
Start VM and install Ubuntu Server 16
Networking Setup
Log into the VM and issue the following commands.
Determine your network interfaces
> ifconfig -a
enp0s3 Link encap:Ethernet HWaddr 08:00:27:ff:1a:7b
inet addr:10.0.2.15 Bcast:10.0.2.255 Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:feff:1a7b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2885 errors:0 dropped:0 overruns:0 frame:0
TX packets:644 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3903493 (3.9 MB) TX bytes:39345 (39.3 KB)
enp0s8 Link encap:Ethernet HWaddr 08:00:27:eb:d0:60
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:19723 (19.7 KB) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:161 errors:0 dropped:0 overruns:0 frame:0
TX packets:161 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:11889 (11.8 KB) TX bytes:11889 (11.8 KB)
From the above we can see that our vm has 2 network interfaces but only one is configured. The first interface is using NAT and has been assigned an IP address. We will need to add the second interface which is using the host-only network.
We are going to set this second interface (host-only) to a specific IP address: (192.168.56.100)
> sudo vi /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
source /etc/network/interfaces.d/*
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
auto enp0s3
iface enp0s3 inet dhcp
auto enp0s8
iface enp0s8 inet static
address 192.168.56.100
netmask 255.255.255.0
network 192.168.56.0
broadcast 192.168.56.255
> reboot
After reboot, we should be able to confirm that the ip address is static by issuing the ifconfig command once more.
SSH into your VM from your host:
> ssh test@192.168.56.100
From the VM, confirm that you can resolve DNS by issueing the following command:
> nslookup google.com
Reference
| Reference | URL |
|---|---|
| Kubernetes on Ubuntu | https://kubernetes.io/docs/getting-started-guides/ubuntu/ |
| Install Kubernetes On Ubuntu | https://www.youtube.com/watch?v=UWg3ORRRF60 |
| Building a Kubernetes Cluster in VirtualBox with Ubuntu | https://medium.com/@KevinHoffman/building-a-kubernetes-cluster-in-virtualbox-with-ubuntu-22cd338846dd |
| Kubernetes cluster setup using virtual machines | https://www.profiq.com/kubernetes-cluster-setup-using-virtual-machines/ |