Implementa K3S-Cluster

instances/instance.tf

@@ -5,8 +5,20 @@ terraform {
             version = "5.17.0"
             configuration_aliases = [ aws.main ]
         }
+        tls = {
+            source = "hashicorp/tls"
+            version = "3.1.0"
         }
     }
+}
+
+
+# TERRAFORM SSH KEYS
+
+resource "tls_private_key" "terraform_ssh_key" {
+    algorithm = "RSA"
+    rsa_bits = 4096
+}
 
 
 # EC2 Instances
@@ -29,25 +41,12 @@ locals {
         6443,
         10250
     ]
-    ports_out = [
-        0,
-    ]
 }
 
 resource "aws_security_group" "project_pool" {
     name = "${var.project_name}_pool_security_group"
     description = "Security group for project pool"
 
-    dynamic "egress" {
-        for_each = toset(local.ports_out)
-        content {
-            from_port = egress.value
-            to_port = egress.value
-            protocol = "tcp"
-            cidr_blocks = ["0.0.0.0/0"]
-        }
-    }
-
     dynamic "ingress" {
         for_each = toset(local.ports_in)
         content {
@@ -57,6 +56,15 @@ resource "aws_security_group" "project_pool" {
             cidr_blocks = ["0.0.0.0/0"]
         }
     }
+
+    egress {
+        from_port        = 0
+        to_port          = 0
+        protocol         = "-1"
+        cidr_blocks      = ["0.0.0.0/0"]
+        ipv6_cidr_blocks = ["::/0"]
+    }
+
 }
 
 resource "aws_instance" "main" {
@@ -68,8 +76,25 @@ resource "aws_instance" "main" {
 
     user_data   = templatefile("${path.module}/scripts/setup_server.sh", {
         extra_key = aws_key_pair.ssh_key_ci_cd.public_key
+        terraform_key = tls_private_key.terraform_ssh_key.public_key_openssh
     })
 
+    provisioner "remote-exec" {
+        connection {
+            type        = "ssh"
+            user        = "ubuntu"
+            agent       = false
+            private_key = tls_private_key.terraform_ssh_key.private_key_pem
+            host        = self.public_ip
+        }
+        
+        inline = [
+            "echo 'curl -sfL https://get.k3s.io | K3S_TOKEN=\"${var.k3s_token}\" sh -' >> /home/ubuntu/setup.sh",
+            "chmod +x /home/ubuntu/setup.sh",
+            "exec /home/ubuntu/setup.sh | tee logs.txt"
+        ]
+    }
+
     tags = {
         Name = "${var.project_name}-main"
     }
@@ -85,8 +110,25 @@ resource "aws_instance" "worker" {
 
     user_data   = templatefile("${path.module}/scripts/setup_server.sh", {
         extra_key = aws_key_pair.ssh_key_ci_cd.public_key
+        terraform_key = tls_private_key.terraform_ssh_key.public_key_openssh
     })
 
+    provisioner "remote-exec" {
+        connection {
+            type        = "ssh"
+            user        = "ubuntu"
+            agent       = false
+            private_key = tls_private_key.terraform_ssh_key.private_key_pem
+            host        = self.public_ip
+        }
+        
+        inline = [
+            "echo 'curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC=\"agent\" K3S_TOKEN=\"${var.k3s_token}\" sh -s - --server ${var.project_domain}:6443' >> /home/ubuntu/setup.sh",
+            "chmod +x /home/ubuntu/setup.sh",
+            "exec /home/ubuntu/setup.sh | tee logs.txt"
+        ]
+    }
+
     tags = {
         Name = "${var.project_name}-worker-${count.index+1}"
     }

instances/scripts/setup_server.sh

@@ -1,7 +1,8 @@
 #!/bin/bash
 
 
-echo -e "\n${extra_key}" >> /home/ubuntu/.ssh/authorized_keys;
+echo -e "${extra_key}" >> /home/ubuntu/.ssh/authorized_keys;
+echo -e "${terraform_key}" >> /home/ubuntu/.ssh/authorized_keys;
 
 echo "export TERM='xterm-256color';" > /home/ubuntu/.profile;