Assuming you have Vagrant (1.9+) installed with virtualbox (it may work
with vmware, but is untested) you should be able to launch a 3 node
Kubernetes cluster by simply running $ vagrant up.
This will spin up 3 VMs and install kubernetes on them. Once they are
completed you can connect to any of them by running
$ vagrant ssh k8s-0[1..3].
$ vagrant up
Bringing machine 'k8s-01' up with 'virtualbox' provider...
Bringing machine 'k8s-02' up with 'virtualbox' provider...
Bringing machine 'k8s-03' up with 'virtualbox' provider...
==> k8s-01: Box 'bento/ubuntu-14.04' could not be found. Attempting to find and install...
...
...
k8s-03: Running ansible-playbook...
PLAY [k8s-cluster] *************************************************************
TASK [setup] *******************************************************************
ok: [k8s-03]
ok: [k8s-01]
ok: [k8s-02]
...
...
PLAY RECAP *********************************************************************
k8s-01 : ok=157 changed=66 unreachable=0 failed=0
k8s-02 : ok=137 changed=59 unreachable=0 failed=0
k8s-03 : ok=86 changed=51 unreachable=0 failed=0
$ vagrant ssh k8s-01
vagrant@k8s-01:~$ kubectl get nodes
NAME STATUS AGE
k8s-01 Ready 45s
k8s-02 Ready 45s
k8s-03 Ready 45s
You can override the default settings in the Vagrantfile either by directly modifying the Vagrantfile
or through an override file.
In the same directory as the Vagrantfile, create a folder called vagrant and create config.rb file in it.
You're able to override the variables defined in Vagrantfile by providing the value in the vagrant/config.rb file,
e.g.:
echo '$forwarded_ports = {8001 => 8001}' >> vagrant/config.rb
and after vagrant up or vagrant reload, your host will have port forwarding setup with the guest on port 8001.
By default, Vagrant uses Ubuntu 16.04 box to provision a local cluster. You may use an alternative supported operating system for your local cluster.
Customize $os variable in Vagrantfile or as override, e.g.,:
echo '$os = "coreos-stable"' >> vagrant/config.rb
The supported operating systems for vagrant are defined in the SUPPORTED_OS constant in the Vagrantfile.