Kubernetes setup in AWS using KOPS

Kubernetes setup in AWS using KOPS

Kubernetes Cluster setup in AWS using KOPS
 

1) Create Ubuntu EC2 instance

2) Install AWSCLI

sudo apt update -y
sudo curl https://s3.amazonaws.com/aws-cli/awscli-bundle.zip -o awscli-bundle.zip
sudo apt install unzip python -y
sudo unzip awscli-bundle.zip
#sudo apt-get install unzip – if you dont have unzip in your system
sudo ./awscli-bundle/install -i /usr/local/aws -b /usr/local/bin/aws

3) Install kops on ubuntu instance:

#Install wget if not installed
sudo apt install wget -y
sudo wget https://github.com/kubernetes/kops/releases/download/v1.16.1/kops-linux-amd64
sudo chmod +x kops-linux-amd64
sudo mv kops-linux-amd64 /usr/local/bin/kops

4) Install kubectl

sudo curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl

sudo chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl

5) Create an IAM role from Consloe or CLI with below Policies.

AmazonEC2FullAccess
AmazonS3FullAccess
IAMFullAccess
AmazonVPCFullAccess

Then Attach IAM role to ubuntu server from Console Select KOPS Server –> Actions –> Instance Settings –> Attach/Replace IAM Role –> Select the role which
You Created. –> Save.

6) create an S3 bucket Execute below commond in KOPS Server use unique bucket name if you get bucket name exists error.

aws s3 mb s3://<bucketname>

ex:
# S3 bucket name should be unique across AWS
aws s3 mb s3://balajimtbatch18.k8s.local

Expose environment variable:

# Add env variables in bashrc
vi .bashrc

# Give Unique Name And S3 Bucket which you created.
export NAME=balajimtbatch18.k8s.local
export KOPS_STATE_STORE=s3://balajimtbatch18.k8s.local

source .bashrc

7) Create sshkeys before creating cluster

ssh-keygen

8)Create kubernetes cluster definitions on S3 bucket

kops create cluster –zones ap-south-1a –networking weave –master-size t2.medium –master-count 1 –node-size t2.micro –node-count=2 ${NAME}

kops create secret –name ${NAME} sshpublickey admin -i ~/.ssh/id_rsa.pub

9) Create kubernetes cluser

kops update cluster ${NAME} –yes

10) Validate your cluster(KOPS will take some time to create cluster ,Execute below commond after 3 or 4 mins)

kops validate cluster

11) To list nodes

kubectl get nodes

To Delete Cluster

kops delete cluster –name=${NAME} –state=${KOPS_STATE_STORE} –yes

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IF you wan to SSH to Kubernates Master or Nodes Created by KOPS. You can SSH From KOPS_Server

ssh  admin@<IPOrDNS>
it above command  is not working
then execute
ssh -i ~/.ssh/id_rsa admin@<IPOrDNS>

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