As a reminder, in this example, this is our cluster setup:
| Hostname | Kubernetes IP | Role |
|---|---|---|
| Master 1 | 10.1.10.11 | Master |
| node 1 | 10.1.10.21 | node |
| node 2 | 10.1.10.22 | node |
For this setup we will use the steps specified here: Ubuntu getting started guide 16.04
For ubuntu version earlier than 15, you will need to refer to this process: Ubuntu getting started guide
To install Kubernetes on our ubuntu systems, we will leverage kubeadm
Here are the steps that are involved (detailed later):
to make sure the systems are up to date, run this command on all systems:
sudo apt-get update && sudo apt-get upgrade -y
Warning
Make sure that your /etc/hosts files on master and nodes resolve your hostnames with 10.1.10.X IPs
You need root privileges for this section, either use sudo or su to gain the required privileges.
you need to give access to the kubernetes packages to your systems, do this on all systems:
apt-get update && apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF
apt-get update
sudo apt-get -y install kubectl=1.5.3-00 kubelet=1.5.3-00 kubernetes-cni=0.3.0.1-07a8a2-00
curl -Lo /tmp/old-kubeadm.deb https://apt.k8s.io/pool/kubeadm_1.6.0-alpha.0.2074-a092d8e0f95f52-00_amd64_0206dba536f698b5777c7d210444a8ace18f48e045ab78687327631c6c694f42.deb
sudo dpkg -i /tmp/old-kubeadm.deb
sudo apt-get install -f
sudo apt-mark hold kubeadm kubectl kubelet kubernetes-cni
once this is done, install docker if not already done on all systems:
apt-get install -y docker.io
for a full list of the limitations go here: kubeadm limitations