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Kubernetes Cluster setup in AWS using KOPS
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>
