src/foundation/microk8s/main.tf

   1 provider "aws" {
   2   region = var.aws_region
   3   access_key = var.access_key
   4   secret_key = var.secret_key
   5
   6 }
   7
   8 resource "aws_instance" "master" {
   9   ami           = var.aws_ami
  10   instance_type = var.aws_instance
  11   vpc_security_group_ids = [aws_security_group.instance.id]
  12   subnet_id =  var.aws_subnet_id
  13   user_data = <<-EOF
  14               #!/bin/bash
  15               sudo su
  16               apt update -y >> microk8s_install.log
  17               apt install snapd -y >> microk8s_install.log
  18               snap install core >> microk8s_install.log
  19               export PATH=$PATH:/snap/bin
  20               snap install microk8s --classic --channel=1.20/stable >> microk8s_install.log
  21               microk8s status --wait-ready
  22               microk8s enable dns >> microk8s_install.log
  23               microk8s add-node > microk8s.join_token
  24               microk8s config > configFile-master
  25               EOF
  26   key_name = "terraform"
  27   tags = {
  28     Name = "master"
  29   }
  30   provisioner "remote-exec" {
  31   inline = ["until [ -f /microk8s.join_token ]; do sleep 5; done; cat /microk8s.join_token",
  32             "sudo sed -i 's/#MOREIPS/IP.7 = ${self.public_ip}\\n#MOREIPS/g' /var/snap/microk8s/current/certs/csr.conf.template",
  33             "sudo sleep 1m",
  34             "sudo microk8s stop",
  35             "sudo microk8s start"
  36            ]
  37   }
  38
  39   connection {
  40     host = self.public_ip
  41     type     = "ssh"
  42     user     = "ubuntu"
  43     password = ""
  44     private_key = "${file("terraform.pem")}"
  45   }
  46
  47   provisioner "local-exec" {
  48     command = <<EOT
  49                touch token
  50                ssh-keyscan -H ${self.public_dns} >> ~/.ssh/known_hosts
  51                scp -i terraform.pem ubuntu@${self.public_dns}:/microk8s.join_token .
  52                tail -n1 microk8s.join_token >> token
  53                scp -i terraform.pem ubuntu@${self.public_dns}:/configFile-master .
  54               EOT
  55   }
  56
  57   lifecycle {
  58     create_before_destroy = true
  59   }
  60 }
  61
  62 resource "aws_security_group" "instance" {
  63   name = "master_microk8s"
  64   vpc_id = var.vpc_id
  65   ingress {
  66     from_port   = 0
  67     to_port     = 0
  68     protocol    = "-1"
  69     cidr_blocks = ["0.0.0.0/0"]
  70   }
  71   egress {
  72     from_port   = 0
  73     to_port     = 0
  74     protocol    = "-1"
  75     cidr_blocks = ["0.0.0.0/0"]
  76   }
  77
  78 }
  79
  80 data "local_file" "tokenContent" {
  81   filename = "token"
  82   depends_on = [
  83     aws_instance.master,
  84   ]
  85 }
  86
  87
  88 locals {
  89     public_dns = aws_instance.master.public_dns
  90     join = data.local_file.tokenContent.content
  91 }
  92
  93
  94 resource "aws_instance" "worker" {
  95   ami           = var.aws_ami
  96   instance_type = var.aws_instance
  97   vpc_security_group_ids = [aws_security_group.instance.id]
  98   subnet_id =  var.aws_subnet_id
  99   user_data = templatefile("worker_user_data.tmpl", { token = local.join } )
 100   key_name = "terraform"
 101   tags = {
 102     Name = "worker"
 103   }
 104
 105   provisioner "remote-exec" {
 106   inline = ["until [ -f /microk8s.complete ]; do sleep 5; done"]
 107   }
 108
 109   connection {
 110     host = self.public_ip
 111     type     = "ssh"
 112     user     = "ubuntu"
 113     password = ""
 114     private_key = "${file("terraform.pem")}"
 115   }
 116   lifecycle {
 117     create_before_destroy = true
 118   }
 119
 120   depends_on = [
 121     aws_instance.master,
 122   ]
 123 }
 124
 125 resource "null_resource" "cluster" {
 126   provisioner "remote-exec" {
 127   inline = ["sudo microk8s kubectl get no >> kubectl.info"]
 128   }
 129
 130   connection {
 131     host = aws_instance.master.public_ip
 132     type     = "ssh"
 133     user     = "ubuntu"
 134     password = ""
 135     private_key = "${file("terraform.pem")}"
 136   }
 137
 138   provisioner "local-exec" {
 139   command = <<EOT
 140                echo ${aws_instance.master.private_ip}
 141                export privateIP=${aws_instance.master.private_ip}
 142                export publicIP=${aws_instance.master.public_ip}
 143                ssh-keyscan -H ${aws_instance.worker.public_dns} >> ~/.ssh/known_hosts
 144                scp -i terraform.pem ubuntu@${aws_instance.worker.public_dns}:/configFile-worker .
 145               EOT
 146   }
 147
 148   lifecycle {
 149     create_before_destroy = true
 150   }
 151
 152   depends_on = [
 153     aws_instance.worker,
 154   ]
 155 }
 156
 157 output "public_ip" {
 158   value         = aws_instance.master.public_ip
 159 }
 160
 161 output "private_ip" {
 162   value = aws_instance.master.private_ip
 163 }