Orchestrating-Containers-Across-Multiple-Virtual-Servers-with-Kubernetes-1

SETTING UP A KUBERNETES CLUSTER FROM GROUND UP (THE HARD WAY)

In this project, a Kubernetes cluster is manually setup from the scratch without any automated helpers in order to better understand each aspect of spinning up a Kubernetes cluster as each components are manually installed from scratch..

STEP 1:

The first step i took was to install minikube on my local machine. This open-source tool has docker runtime pre-install on it.Using 'brew intall kminikube' installed minikube and its various dependencies which included command line interface for kubernetes callled kubectl.

images/minikube installation.jpeg

STEP 2:

Install CFSSL and CFSSLJSON The cfssl is an open source tool by Cloudflare used to setup a Public Key Infrastructure(PKI) for generating, signing and bundling TLS certificates.

STEP 3:

Configuring Network Structure Creating a directory named k8s-cluster-from-ground-up and changing directory: mkdir k8s-cluster-from-ground-up && cd k8s-cluster-from-ground-up

Creating a VPC and storing its ID as a variable:

$ VPC_ID=$(aws ec2 create-vpc --cidr-block 172.31.0.0/16 --output text --query 'Vpc.VpcId' )

Tagging the VPC so that it is named:

$ NAME=k8s-cluster-from-ground-up

$ aws ec2 create-tags --resources ${VPC_ID} --tags Key=Name,Value=${NAME}

Enabling DNS support for the VPC:

$ aws ec2 modify-vpc-attribute --vpc-id ${VPC_ID} --enable-dns-support '{"Value": true}' Enabling DNS support for hostnames: $ aws ec2 modify-vpc-attribute --vpc-id ${VPC_ID} --enable-dns-hostnames '{"Value": true}'

Setting the required region:$ AWS_REGION=eu-central-1

Configuring DHCP Options Set:

$ DHCP_OPTION_SET_ID=$(aws ec2 create-dhcp-options --dhcp-configuration "Key=domain-name,Values=$AWS_REGION.compute.internal" "Key=domain-name-servers,Values=AmazonProvidedDNS" --output text --query 'DhcpOptions.DhcpOptionsId') Tagging the DHCP Option set:

$ aws ec2 create-tags \

--resources ${DHCP_OPTION_SET_ID} --tags Key=Name,Value=${NAME} Associating the DHCP Option set with the VPC: $ aws ec2 associate-dhcp-options --dhcp-options-id ${DHCP_OPTION_SET_ID} --vpc-id ${VPC_ID}