KUBERNETES
- 3 (Installation)
What we will learn,
Kubernetes cluster creation,
Steps for Installation,
1. Swap
should be disabled
2. Disable
selinux
3. Firewalld
should be stopped, (if not then must be rules defined to allow
k8s)
4. Entry
of all master & worker in /etc/hosts
5. Mac
id and product_uuid should be unique
6. Enable
Internet
7. Yum
update
8. Install
docker-ce on all nodes [docker engine/docker daemon, responsible for
all the container management docker build, docker network, docker volume and
docker inspect. Requires docker-ce-cli.]
9. Install
docker-ce-cli on all nodes [command line interface for docker engine]
10. Install
containerd.io on all nodes [daemon containerd to interface with the OS API,
It uses kernel features to provide a runtime environment for containers. Containerd
is the container runtime software which is responsible for running containers.
11. Install
Kubelet on all nodes
12. Install
Kubeadm on all nodes
13. Install
Kubectl on all nodes
14. Initialize
kubeadm on Master node only
15. Install/Deploy
a Container Network Interface (CNI) based Pod network on Master Node only (our
case Calico) [Required for Pods communication with each other. Cluster DNS
(CoreDNS) will not start up before a network is installed. A CNI plugin is
required to implement the Kubernetes network model.
16. Join
Worker with Master
17. Validate the setup
