A easy walkthrough for setting up a Kubernetes cluster on Ubuntu( multinodes )

Actually there is a complete user-guild for creating a kubernetes cluster at github/kubernetes.

However, it is organized in a bad and unclear manner, which makes it difficult for beginners to find out where to start up.

Don't worry. I abstract it here.

All below is tested successfully on Ubuntu 14.04

git clone https://github.com/kubernetes/kubernetes.git
cd kubernetes

in the file cluster/Ubuntu/config-default.sh, you need to customize it according to your own settings. Below is a where you should modify:

export nodes="vcap@10.10.103.250 vcap@10.10.103.162 vcap@10.10.103.223"

export role="ai i i"

export NUM_MINIONS=${NUM_MINIONS:-3}

export SERVICE_CLUSTER_IP_RANGE=192.168.3.0/24

export FLANNEL_NET=172.16.0.0/16

variable nodes is all your cluster nodes, which in the form of username@hostname

variable role is all the roles of your above cluster nodes. Roles include a for master and i for minion. master and minion can be combined for nodes that are both master and minion.

variable NUM_MINIONS corresponds to the number of cluster nodes you've defined above.

Other variables you can leave them alone. In most cases, they can't affect your kubernetes cluster setting up.

just type command below once and for all

cd kubernetes/cluster
KUBERNETES_PROVIDER=ubuntu ./kube-up.sh

to test if it works successfully, you need to add the cluster/ubuntu/binaries to PATH and type:

kubectl get nodes

that will show all the nodes in the cluster like this

NAME            LABELS                              STATUS   AGE
<hostname>      kubernetes.io/hostname=<hostname>   Ready    2s