Before continuing, be sure you have completed stage 1 and stage 2.
You will need ansible installed on your build server. This could be the same server that you are hosting the web services from. We have tested with 2.2.1.0
yum -y install gcc python-devel
pip install ansible
You should already have the KUBaM Repo installed on your build server. Go to the stage 3 Ansible directory:
cd ~/Code/KUBaM/stage3/ansible
Put the host names in your /etc/hosts
files unless you already have a DNS setup with the names. For example, you might have something like:
127.0.0.1 localhost
10.61.124.120 buildmaster
10.61.124.170 kube01
10.61.124.171 kube02
10.61.124.172 kube03
This has a simple 3 node kubernetes cluster.
Next, you can put the host names in the ~/Code/KUBaM/stage3/ansible/inventory/hosts
file.
You will see there is a master
section and a nodes
section. If you have more nodes you can add them here.
By default, KUBaM names the nodes kube0n
where n
is the node number. The master node is kube01
cd ~/Code/KUBaM/stage3/ansible
ansible -m ping all
This command should return that all nodes can be reached.
If you need to set up SSH (because you didn’t in the kickstart file to authorize passwordless ssh sessions from the build server) then you can modify the group_vars/all.yml
to contain the proper entries to anisible_ssh_user
and ansible_ssh_pass
. This approach is not recommended as authorized keys is a much more efficient and secure way.
You are now ready to move to stage 4
~/Code/KUBaM/stage3/ansible/group_vars/all.yml
If there is no proxy set it to an empty string. The master_ip_address should be set to the IP address of kube01
The local_repo
should be set to the same source where your kickstart file was specified.
Install Kubernetes and Contiv using:
cd ~/Code/KUBaM/stage3/ansible
ansible-playbook site.yml
This operation will take around 10 minutes and install the kubernetes cluster downloading the necessary pieces. It uses kubeadm and will evolve with the project as more features are supported.
You are now ready to move to stage 4