Highly Available Kubernetes Cluster Using HAproxy and Keepalived

Sun, 17 Oct 2021 00:00:00 +0000

Kubernetes provides us a convenient way to make our application easier to maintain and more scalable. Since kubernetes is only an abstraction that runs on a set of machines and consists of many components, we have some work to do to keep our kubernetes cluster well-established and healthy, especially to make that cluster highly available. In this case, I use two HAproxy instances to balance the load over the network or we usually say that as load balancing. Not only that, I also use Keepalived which will make it redundant between the two HAproxy instances. The diagram below depicts how HAproxy and Keepalived play their role :

Automating K8S Cluster Installation with Kubespray

Mon, 18 Jan 2021 00:00:00 +0000

There are various ways to perform a kubernetes installation. If you look at the environment in which kubernetes will be installed on, you have options that can be done, namely:

Learning purposes :

Kind tools ( Kubernetes In Docker )
Minikube

Production purposes :

Bootstrapping K8S with kubeadm
Installing K8S with kubespray
Installing K8S with kops

In this opportunity, I will do the installation of a kubernetes cluster using kubespray. Kubespray itself is a way to install Kubernetes cluster by automating it using ansible playbook.

Kubespray on Blog · Muhammad Fauzi Islami

Highly Available Kubernetes Cluster Using HAproxy and Keepalived

Automating K8S Cluster Installation with Kubespray