name = "cluster"

zone = "europe-north1-a"

machine_type = "f1-micro"

boot_disk {

initialize_params {

image = "debian-cloud / debian-9"

}

}

metadata = {

ssh-keys = "essh: $ {file (" ./ node-cluster.pub ")}"

}

network_interface {

network = "default"

access_config {

nat_ip = "$ {google_compute_address.static-ip-address.address}"

}

}

}

resource "null_resource" "cluster" {

triggers = {

cluster_instance_ids = "$ {join (", ", google_compute_instance.cluster. *. id)}"

}

connection {

host = "$ {google_compute_address.static-ip-address.address}"

type = "ssh"

user = "essh"

timeout = "2m"

private_key = "$ {file (" ~ / node-cluster / node-cluster ")}"

# agent = "false"

}

provisioner "file" {

source = "client.js"

destination = "~ / client.js"

}

provisioner "remote-exec" {

inline = [

"cd ~ && echo 1> test.txt"

]

}

essh @ kubernetes-master: ~ / node-cluster $ sudo ./terraform apply

google_compute_address.static-ip-address: Creating …

google_compute_address.static-ip-address: Creation complete after 5s [id = node-cluster-243923 / europe-north1 / static-ip-address]

google_compute_instance.cluster: Creating …

google_compute_instance.cluster: Still creating … [10s elapsed]

google_compute_instance.cluster: Creation complete after 12s [id = cluster]

null_resource.cluster: Creating …

null_resource.cluster: Provisioning with 'file' …

null_resource.cluster: Provisioning with 'remote-exec' …

null_resource.cluster (remote-exec): Connecting to remote host via SSH …

null_resource.cluster (remote-exec): Host: 35.228.82.222

null_resource.cluster (remote-exec): User: essh

null_resource.cluster (remote-exec): Password: false

null_resource.cluster (remote-exec): Private key: true

null_resource.cluster (remote-exec): Certificate: false

null_resource.cluster (remote-exec): SSH Agent: false

null_resource.cluster (remote-exec): Checking Host Key: false

null_resource.cluster (remote-exec): Connected!

null_resource.cluster: Creation complete after 7s [id = 816586071607403364]

Apply complete! Resources: 3 added, 0 changed, 0 destroyed.

esschtolts @ cluster: ~ $ ls / home / essh /

client.js test.txt

[sudo] password for essh:

google_compute_address.static-ip-address: Refreshing state … [id = node-cluster-243923 / europe-north1 / static-ip-address]

google_compute_instance.cluster: Refreshing state … [id = cluster]

null_resource.cluster: Refreshing state … [id = 816586071607403364]

Enter a value: yes

null_resource.cluster: Destroying … [id = 816586071607403364]

null_resource.cluster: Destruction complete after 0s

google_compute_instance.cluster: Destroying … [id = cluster]

google_compute_instance.cluster: Still destroying … [id = cluster, 10s elapsed]

google_compute_instance.cluster: Still destroying … [id = cluster, 20s elapsed]

google_compute_instance.cluster: Destruction complete after 27s

google_compute_address.static-ip-address: Destroying … [id = node-cluster-243923 / europe-north1 / static-ip-address]

google_compute_address.static-ip-address: Destruction complete after 8s

To deploy the entire project, you can add it to the repository, and we will upload it to the virtual machine by copying the installation script to this virtual machine and then launching it:

Moving on to Kubernetes

In the minimal version, creating a cluster of three nodes looks like this:

essh @ kubernetes-master: ~ / node-cluster / Kubernetes $ cat main.tf

provider "google" {

credentials = "$ {file (" ../ kubernetes_key.json ")}"

project = "node-cluster-243923"

region = "europe-north1"

}

resource "google_container_cluster" "node-ks" {

name = "node-ks"

location = "europe-north1-a"

initial_node_count = 3

}

essh @ kubernetes-master: ~ / node-cluster / Kubernetes $ sudo ../terraform init