Update README.md

Author: Fiware-Community

README.md

@@ -1,57 +1,7 @@
 # kubernetes-in-FiwareLab
 This repository has set of ansible playbooks created to setup a kubernetes cluster fully automated with one master and multiple worker nodes. This will work on Fiware-Lab VMs. This has been tested and verified on Centos 7.9 64 bit operating systems with Kernel 5.12.10-1.el7.elrepo.x86_64 and Ubuntu 16.04 64 bit operating systems with Kernel Linux 4.4.0-210-generic. 
-
-# Prerequisites
-1.	At least three VMs are required for K8s deployment.
-2.	Servers required:
-
-    a. Ansible Host
-    
-    b. Master Node
-    
-    c. Worker Nodes
-    
-3.	Ansible should be installed on Ansible Host. For installation steps, follow [install-ansible.md](https://github.com/Fiware-Community/kubernetes-in-FiwareLab/blob/main/docs/install-ansible.md).
-
-# How to use this (Setup Instructions)
-1.	Make servers ready (Ansible Host, one master node and multiple worker nodes) by creating new VMs on Fiware-Lab.
-2.	Update the Kernel if it is lower than 5.x (for CentOS). Steps are added in [update-kernel.md](https://github.com/Fiware-Community/kubernetes-in-FiwareLab/blob/main/docs/update-kernel.md).
-3.	Install firewall (if not installed). Steps are added in [setup-firewalld.md](https://github.com/Fiware-Community/kubernetes-in-FiwareLab/blob/main/docs/setup-firewalld.md).
-4.	Make an entry of each hosts in /etc/hosts file for name resolution in Master and Worker VM as:
-
-    On Master: 127.0.0.1   <master-vm-name>.novalocal
-    
-    On Worker: 127.0.0.1   <worker-vm-name>.novalocal
-    
-5.	Make sure kubernetes master node and other worker nodes are reachable between each other.
-6.	Internet connection must be enabled in all nodes, required packages will be downloaded from kubernetes official yum repository. 
-7.	Copy the script and ansible playbooks on Ansible Host VM.
-8.	There is a file ```hosts``` in this folder, make entries of all kubernetes nodes.
-9.	Provide server details in ```playbooks/env_variables```.
-10.	Deploy the ssh key from Ansible Host to nodes for password less authentication. Steps are added in [passwordless-ssh.md](https://github.com/Fiware-Community/kubernetes-in-FiwareLab/blob/main/docs/passwordless-ssh.md).
-11.	Provide root level privilege to centos or ubuntu user. Steps are added in [root-access.md](https://github.com/Fiware-Community/kubernetes-in-FiwareLab/blob/main/docs/root-access.md).
-12.	Run ```settingup_kubernetes_cluster.yml``` playbook to setup all nodes and kubernetes master configuration.
-    
-    ```ansible-playbook settingup_kubernetes_cluster.yml```
-
-13.	Run ```join_kubernetes_workers_nodes.yml``` playbook to join the worker nodes with kubernetes master node once ```settingup_kubernetes_cluster.yml``` playbook tasks are completed.
-    
-    ```ansible-playbook join_kubernetes_workers_nodes.yml```
-
-14.	Verify the configuration from master node.
-    ```
-    kubectl get nodes
-    kubectl get pods --all-namespaces
-    ```
-
-# Troubleshooting
-In case settingup_kubernetes_cluster playbook fails due to some system errors. Then reset the cluster otherwise it will show different errors like **PORT IN USE** and **CERTIFICATES ALREADY EXIST**
-To fix these errors run below commands on master node:
-    
-    Kubeadm reset
-    iptables -F && iptables -t nat -F && iptables -t mangle -F && iptables -X
 
-# Files in this repository
+# Files in this repository under centos and ubuntu folders
 1.	**ansible.cfg** - Ansible configuration file created locally.
 2.	**hosts** - Ansible Inventory File
 3.	**env_variables** - Main environment variable file where we have to specify based on our environment.
@@ -60,14 +10,6 @@ To fix these errors run below commands on master node:
 6.	**clear_k8s_setup.yml** - Ansible Playbook helps to delete entire configurations from all nodes.
 7.	**playbooks** – It’s a directory holds all playbooks.
 
-# Deploy Fiware GEs using HELM
-1.	To make use of the charts, you may add the repository:
-    
-    helm repo add fiware https://fiware.github.io/helm-charts
-2.	After the repo is added all charts can be installed via:
-    
-    ```helm install <RELEASE_NAME> fiware/<CHART_NAME>```
-
 # Limitations
-1.	Ansible script would deploy bare minimum K8s. User can configure K8s like persistent storage etc.
+1. Ansible script would deploy bare minimum K8s. User can configure K8s like persistent storage etc.
 2. At least three VMs are required for K8s deployment.