aws-terraform-kubeAdm

In this repository, you can create kubernetes cluster using only terraform apply in AWS.

1. Configure on your docker

$ docker run -it graykode/aws-kubeadm-terraform:0.3 /bin/bash

Export your own AWS Access / Secret keys

$ export AWS_ACCESS_KEY_ID=<Your Access Key in AWS>
$ export AWS_SECRET_ACCESS_KEY=<Your Access Key in Secret>

Generate your SSH key pair for aws_key_pair

$ ssh-keygen -t rsa -N "" -f tf-kube

Create your k8stoken

$ python -c 'import random; print "%0x.%0x" % (random.SystemRandom().getrandbits(3*8), random.SystemRandom().getrandbits(8*8))'

> ebd70e.ad84c12d14ee5dae

2. Create Kubernetes Cluster

Initialize terraform

$ terraform init 

Create all objects in AWS and put k8s token before you created! It's Done.

$ terraform apply
var.k8stoken
  Enter a value: ebd70e.ad84c12d14ee5dae

Check if k8s Cluster is created.

$ ssh -i tf-kube ubuntu@server-ip
ubuntu@ip-10-43-0-40:~$ kubectl get nodes
NAME                                            STATUS   ROLES    AGE     VERSION
ip-10-43-0-30.ap-northeast-2.compute.internal   Ready    <none>   3m40s   v1.15.0
ip-10-43-0-40.ap-northeast-2.compute.internal   Ready    master   4m4s    v1.15.0

If you want to delete all cluster, type this.

$ terraform destroy

If you want to see Kubernetes Clustering Step.

$ tail -f /home/ubuntu/master.log # in master node
$ tail -f /home/ubuntu/worker.log # in worker node
$ tail -f /home/ubuntu/etcd.log # in etcd node

3. Set variables.tf

1. Set EC2 instance_type

variable etcd_instance_type {
  default = "t2.medium"
}
variable controller_instance_type {
  default = "t2.medium"
}
variable worker_instance_type {
  default = "t2.medium"
}

2. Set Number of EC2 Node

variable number_of_etcd{
  description = "The number of etcd, only acts as etcd"
  default = 0
}

variable number_of_worker{
  description = "The number of worker nodes"
  default = 1
}

PS

If you meet provider.aws: error validating provider credentials Error, Please check that your IAM key is activate.

ToDo

• Set up a High Availability etcd cluster with kubeadm
• Add k8s master node ingress, ingress-controller with ELB

Author

• Reference : alicek106/aws-terraform-kubernetes, cablespaghetti/kubeadm-aws
• Tae Hwan Jung(Jeff Jung) @graykode
• Author Email : [email protected]