Fist attempt to factor microOS install
This commit is contained in:
Marco Nenciarini
parent
2a47ad6b89
commit
0090c1a6f1
71
agents.tf
71
agents.tf
@ -1,65 +1,45 @@
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resource "hcloud_server" "agents" {
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module "agents" {
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source = "./modules/host"
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count = var.agents_num
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name = "k3s-agent-${count.index}"
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image = data.hcloud_image.linux.name
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rescue = "linux64"
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server_type = var.agent_server_type
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location = var.location
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ssh_keys = [hcloud_ssh_key.k3s.id]
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public_key = var.public_key
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private_key = var.private_key
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firewall_ids = [hcloud_firewall.k3s.id]
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placement_group_id = hcloud_placement_group.k3s.id
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location = var.location
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network_id = hcloud_network.k3s.id
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ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 513 + count.index)
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server_type = var.control_plane_server_type
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labels = {
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"provisioner" = "terraform",
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"engine" = "k3s",
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"engine" = "k3s"
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}
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hcloud_token = var.hcloud_token
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}
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resource "null_resource" "agents" {
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count = var.agents_num
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triggers = {
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agent_id = module.agents[count.index].id
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}
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connection {
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user = "root"
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private_key = local.ssh_private_key
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agent_identity = local.ssh_identity
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host = self.ipv4_address
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}
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provisioner "file" {
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content = templatefile("${path.module}/templates/config.ign.tpl", {
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name = self.name
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ssh_public_key = local.ssh_public_key
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})
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destination = "/root/config.ign"
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}
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# Combustion script file to install k3s-selinux
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provisioner "file" {
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content = local.combustion_script
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destination = "/root/script"
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}
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# Install MicroOS
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provisioner "remote-exec" {
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inline = local.microOS_install_commands
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}
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# Issue a reboot command and wait for the node to reboot
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provisioner "local-exec" {
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command = "ssh ${local.ssh_args} root@${self.ipv4_address} '(sleep 2; reboot)&'; sleep 3"
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}
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provisioner "local-exec" {
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command = <<-EOT
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until ssh ${local.ssh_args} -o ConnectTimeout=2 root@${self.ipv4_address} true 2> /dev/null
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do
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echo "Waiting for MicroOS to reboot and become available..."
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sleep 3
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done
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EOT
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host = module.agents[count.index].ipv4_address
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}
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# Generating k3s agent config file
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provisioner "file" {
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content = yamlencode({
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node-name = self.name
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node-name = module.agents[count.index].name
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server = "https://${local.first_control_plane_network_ip}:6443"
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token = random_password.k3s_token.result
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kubelet-arg = "cloud-provider=external"
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@ -89,13 +69,8 @@ resource "hcloud_server" "agents" {
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]
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}
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network {
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network_id = hcloud_network.k3s.id
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ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 513 + count.index)
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}
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depends_on = [
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hcloud_server.first_control_plane,
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null_resource.first_control_plane,
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hcloud_network_subnet.k3s
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]
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}
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6
data.tf
6
data.tf
@ -15,8 +15,4 @@ data "github_release" "kured" {
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repository = "kured"
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owner = "weaveworks"
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retrieve_by = "latest"
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}
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data "hcloud_image" "linux" {
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name = local.hcloud_image_name
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}
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}
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@ -1,17 +1,19 @@
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data "remote_file" "kubeconfig" {
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conn {
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host = hcloud_server.first_control_plane.ipv4_address
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host = module.first_control_plane.ipv4_address
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port = 22
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user = "root"
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private_key = local.ssh_private_key
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agent = var.private_key == null
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}
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path = "/etc/rancher/k3s/k3s.yaml"
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depends_on = [null_resource.first_control_plane]
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}
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locals {
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kubeconfig_external = replace(data.remote_file.kubeconfig.content, "127.0.0.1", hcloud_server.first_control_plane.ipv4_address)
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kubeconfig_external = replace(data.remote_file.kubeconfig.content, "127.0.0.1", module.first_control_plane.ipv4_address)
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kubeconfig_parsed = yamldecode(local.kubeconfig_external)
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kubeconfig_data = {
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host = local.kubeconfig_parsed["clusters"][0]["cluster"]["server"]
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31
locals.tf
31
locals.tf
@ -1,6 +1,5 @@
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locals {
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first_control_plane_network_ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 257)
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hcloud_image_name = "ubuntu-20.04"
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ssh_public_key = trimspace(file(var.public_key))
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# ssh_private_key is either the contents of var.private_key or null to use a ssh agent.
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@ -18,39 +17,9 @@ locals {
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csi_version = var.hetzner_csi_version != null ? var.hetzner_csi_version : data.github_release.hetzner_csi.release_tag
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kured_version = data.github_release.kured.release_tag
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microOS_install_commands = [
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"set -ex",
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"apt-get update",
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"apt-get install -y aria2",
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"aria2c --follow-metalink=mem https://download.opensuse.org/tumbleweed/appliances/openSUSE-MicroOS.x86_64-kvm-and-xen.qcow2.meta4",
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"qemu-img convert -p -f qcow2 -O host_device $(ls -a | grep -ie '^opensuse.*microos.*qcow2$') /dev/sda",
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"sgdisk -e /dev/sda",
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"parted -s /dev/sda resizepart 4 99%",
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"parted -s /dev/sda mkpart primary ext2 99% 100%",
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"partprobe /dev/sda && udevadm settle && fdisk -l /dev/sda",
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"mount /dev/sda4 /mnt/ && btrfs filesystem resize max /mnt && umount /mnt",
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"mke2fs -L ignition /dev/sda5",
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"mount /dev/sda5 /mnt",
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"mkdir /mnt/ignition",
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"cp /root/config.ign /mnt/ignition/config.ign",
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"mkdir /mnt/combustion",
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"cp /root/script /mnt/combustion/script",
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"umount /mnt"
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]
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combustion_script = <<EOF
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#!/bin/bash
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# combustion: network
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rpm --import https://rpm.rancher.io/public.key
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zypper refresh
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zypper --gpg-auto-import-keys install -y https://rpm.rancher.io/k3s/stable/common/microos/noarch/k3s-selinux-0.4-1.sle.noarch.rpm
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udevadm settle
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EOF
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common_commands_install_k3s = [
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"set -ex",
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# first we disable automatic reboot (after transactional updates), and configure the reboot method as kured
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"rebootmgrctl set-strategy off && echo 'REBOOT_METHOD=kured' > /etc/transactional-update.conf",
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# prepare the k3s config directory
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"mkdir -p /etc/rancher/k3s",
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# move the config file into place
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69
master.tf
69
master.tf
@ -1,63 +1,45 @@
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resource "hcloud_server" "first_control_plane" {
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module "first_control_plane" {
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source = "./modules/host"
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name = "k3s-control-plane-0"
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image = data.hcloud_image.linux.name
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rescue = "linux64"
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server_type = var.control_plane_server_type
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location = var.location
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ssh_keys = [hcloud_ssh_key.k3s.id]
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public_key = var.public_key
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private_key = var.private_key
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firewall_ids = [hcloud_firewall.k3s.id]
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placement_group_id = hcloud_placement_group.k3s.id
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location = var.location
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network_id = hcloud_network.k3s.id
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ip = local.first_control_plane_network_ip
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server_type = var.control_plane_server_type
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labels = {
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"provisioner" = "terraform",
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"engine" = "k3s"
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}
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hcloud_token = var.hcloud_token
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}
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resource "null_resource" "first_control_plane" {
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triggers = {
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first_control_plane_id = module.first_control_plane.id
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}
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connection {
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user = "root"
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private_key = local.ssh_private_key
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agent_identity = local.ssh_identity
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host = self.ipv4_address
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}
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provisioner "file" {
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content = templatefile("${path.module}/templates/config.ign.tpl", {
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name = self.name
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ssh_public_key = local.ssh_public_key
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})
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destination = "/root/config.ign"
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}
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# Combustion script file to install k3s-selinux
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provisioner "file" {
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content = local.combustion_script
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destination = "/root/script"
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}
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# Install MicroOS
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provisioner "remote-exec" {
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inline = local.microOS_install_commands
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}
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# Issue a reboot command and wait for the node to reboot
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provisioner "local-exec" {
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command = "ssh ${local.ssh_args} root@${self.ipv4_address} '(sleep 2; reboot)&'; sleep 3"
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}
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provisioner "local-exec" {
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command = <<-EOT
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until ssh ${local.ssh_args} -o ConnectTimeout=2 root@${self.ipv4_address} true 2> /dev/null
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do
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echo "Waiting for MicroOS to reboot and become available..."
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sleep 3
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done
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EOT
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host = module.first_control_plane.ipv4_address
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}
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# Generating k3s master config file
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provisioner "file" {
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content = yamlencode({
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node-name = self.name
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node-name = module.first_control_plane.name
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token = random_password.k3s_token.result
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cluster-init = true
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disable-cloud-controller = true
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disable = ["servicelb", "local-storage"]
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@ -65,7 +47,7 @@ resource "hcloud_server" "first_control_plane" {
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kubelet-arg = "cloud-provider=external"
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node-ip = local.first_control_plane_network_ip
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advertise-address = local.first_control_plane_network_ip
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token = random_password.k3s_token.result
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tls-san = local.first_control_plane_network_ip
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node-taint = var.allow_scheduling_on_control_plane ? [] : ["node-role.kubernetes.io/master:NoSchedule"]
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node-label = var.automatically_upgrade_k3s ? ["k3s_upgrade=true"] : []
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})
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@ -177,11 +159,6 @@ resource "hcloud_server" "first_control_plane" {
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]
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}
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network {
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network_id = hcloud_network.k3s.id
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ip = local.first_control_plane_network_ip
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}
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depends_on = [
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hcloud_network_subnet.k3s,
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hcloud_firewall.k3s
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43
modules/host/locals.tf
Normal file
43
modules/host/locals.tf
Normal file
@ -0,0 +1,43 @@
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locals {
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ssh_public_key = trimspace(file(var.public_key))
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# ssh_private_key is either the contents of var.private_key or null to use a ssh agent.
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ssh_private_key = var.private_key == null ? null : trimspace(file(var.private_key))
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# ssh_identity is not set if the private key is passed directly, but if ssh agent is used, the public key tells ssh agent which private key to use.
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# For terraforms provisioner.connection.agent_identity, we need the public key as a string.
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ssh_identity = var.private_key == null ? local.ssh_public_key : null
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# ssh_identity_file is used for ssh "-i" flag, its the private key if that is set, or a public key file
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# if an ssh agent is used.
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ssh_identity_file = var.private_key == null ? var.public_key : var.private_key
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# shared flags for ssh to ignore host keys, to use our ssh identity file for all connections during provisioning.
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ssh_args = "-o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -i ${local.ssh_identity_file}"
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microOS_install_commands = [
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"set -ex",
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"apt-get update",
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"apt-get install -y aria2",
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"aria2c --follow-metalink=mem https://download.opensuse.org/tumbleweed/appliances/openSUSE-MicroOS.x86_64-kvm-and-xen.qcow2.meta4",
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"qemu-img convert -p -f qcow2 -O host_device $(ls -a | grep -ie '^opensuse.*microos.*qcow2$') /dev/sda",
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"sgdisk -e /dev/sda",
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"parted -s /dev/sda resizepart 4 99%",
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"parted -s /dev/sda mkpart primary ext2 99% 100%",
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"partprobe /dev/sda && udevadm settle && fdisk -l /dev/sda",
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"mount /dev/sda4 /mnt/ && btrfs filesystem resize max /mnt && umount /mnt",
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"mke2fs -L ignition /dev/sda5",
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"mount /dev/sda5 /mnt",
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"mkdir /mnt/ignition",
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"cp /root/config.ign /mnt/ignition/config.ign",
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"mkdir /mnt/combustion",
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"cp /root/script /mnt/combustion/script",
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"umount /mnt"
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]
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combustion_script = <<EOF
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#!/bin/bash
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# combustion: network
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rpm --import https://rpm.rancher.io/public.key
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zypper refresh
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zypper --gpg-auto-import-keys install -y https://rpm.rancher.io/k3s/stable/common/microos/noarch/k3s-selinux-0.4-1.sle.noarch.rpm
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udevadm settle
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EOF
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}
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71
modules/host/main.tf
Normal file
71
modules/host/main.tf
Normal file
@ -0,0 +1,71 @@
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resource "hcloud_server" "server" {
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name = var.name
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image = "ubuntu-20.04"
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rescue = "linux64"
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server_type = var.server_type
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location = var.location
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ssh_keys = var.ssh_keys
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firewall_ids = var.firewall_ids
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placement_group_id = var.placement_group_id
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labels = var.labels
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network {
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network_id = var.network_id
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ip = var.ip
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}
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connection {
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user = "root"
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private_key = local.ssh_private_key
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agent_identity = local.ssh_identity
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host = self.ipv4_address
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}
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provisioner "file" {
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content = templatefile("${path.module}/templates/config.ign.tpl", {
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name = self.name
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ssh_public_key = local.ssh_public_key
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})
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destination = "/root/config.ign"
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}
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# Combustion script file to install k3s-selinux
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provisioner "file" {
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content = local.combustion_script
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destination = "/root/script"
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}
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# Install MicroOS
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provisioner "remote-exec" {
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inline = local.microOS_install_commands
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}
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# Issue a reboot command
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provisioner "local-exec" {
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command = "ssh ${local.ssh_args} root@${self.ipv4_address} '(sleep 2; reboot)&'; sleep 3"
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}
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# Wait for MicroOS to reboot and be ready
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provisioner "local-exec" {
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command = <<-EOT
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until ssh ${local.ssh_args} -o ConnectTimeout=2 root@${self.ipv4_address} true 2> /dev/null
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do
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echo "Waiting for MicroOS to reboot and become available..."
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sleep 2
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done
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EOT
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}
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# Run the agent
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provisioner "remote-exec" {
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inline = [
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# set the hostname in a persistent fashion
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"hostnamectl set-hostname ${self.name}",
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# Disable automatic reboot (after transactional updates), and configure the reboot method as kured
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"rebootmgrctl set-strategy off && echo 'REBOOT_METHOD=kured' > /etc/transactional-update.conf"
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]
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}
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}
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12
modules/host/out.tf
Normal file
12
modules/host/out.tf
Normal file
@ -0,0 +1,12 @@
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output "ipv4_address" {
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value = hcloud_server.server.ipv4_address
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}
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output "name" {
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value = hcloud_server.server.name
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}
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output "id" {
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value = hcloud_server.server.id
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}
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31
modules/host/templates/config.ign.tpl
Normal file
31
modules/host/templates/config.ign.tpl
Normal file
@ -0,0 +1,31 @@
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{
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"ignition": {
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"version": "3.0.0"
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},
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"passwd": {
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"users": [
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{
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"name": "root",
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"sshAuthorizedKeys": [
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"${ssh_public_key}"
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]
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}
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]
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},
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"storage": {
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"files": [
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{
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"path": "/etc/sysconfig/network/ifcfg-eth1",
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"mode": 420,
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"overwrite": true,
|
||||
"contents": { "source": "data:,BOOTPROTO%3D%27dhcp%27%0ASTARTMODE%3D%27auto%27" }
|
||||
},
|
||||
{
|
||||
"path": "/etc/ssh/sshd_config.d/kube-hetzner.conf",
|
||||
"mode": 420,
|
||||
"overwrite": true,
|
||||
"contents": { "source": "data:,PasswordAuthentication%20no%0AX11Forwarding%20no%0AMaxAuthTries%202%0AAllowTcpForwarding%20no%0AAllowAgentForwarding%20no%0AAuthorizedKeysFile%20.ssh%2Fauthorized_keys" }
|
||||
}
|
||||
]
|
||||
}
|
||||
}
|
||||
65
modules/host/variables.tf
Normal file
65
modules/host/variables.tf
Normal file
@ -0,0 +1,65 @@
|
||||
variable "hcloud_token" {
|
||||
description = "Hetzner Cloud API Token"
|
||||
type = string
|
||||
sensitive = true
|
||||
}
|
||||
|
||||
variable "name" {
|
||||
description = "Host name"
|
||||
type = string
|
||||
}
|
||||
|
||||
variable "public_key" {
|
||||
description = "SSH public Key."
|
||||
type = string
|
||||
}
|
||||
|
||||
variable "private_key" {
|
||||
description = "SSH private Key."
|
||||
type = string
|
||||
}
|
||||
|
||||
variable "ssh_keys" {
|
||||
description = "List of SSH key IDs"
|
||||
type = list(string)
|
||||
nullable = true
|
||||
}
|
||||
|
||||
variable "firewall_ids" {
|
||||
description = "Set of firewal IDs"
|
||||
type = set(number)
|
||||
nullable = true
|
||||
}
|
||||
|
||||
variable "placement_group_id" {
|
||||
description = "Placement group ID"
|
||||
type = number
|
||||
nullable = true
|
||||
}
|
||||
|
||||
variable "labels" {
|
||||
description = "Labels"
|
||||
type = map(any)
|
||||
nullable = true
|
||||
}
|
||||
|
||||
variable "location" {
|
||||
description = "The server location"
|
||||
type = string
|
||||
}
|
||||
|
||||
variable "network_id" {
|
||||
description = "The network or subnet id"
|
||||
type = number
|
||||
}
|
||||
|
||||
variable "ip" {
|
||||
description = "The IP"
|
||||
type = string
|
||||
nullable = true
|
||||
}
|
||||
|
||||
variable "server_type" {
|
||||
description = "The server type"
|
||||
type = string
|
||||
}
|
||||
16
modules/host/versions.tf
Normal file
16
modules/host/versions.tf
Normal file
@ -0,0 +1,16 @@
|
||||
terraform {
|
||||
required_providers {
|
||||
hcloud = {
|
||||
source = "hetznercloud/hcloud"
|
||||
version = ">= 1.0.0, < 2.0.0"
|
||||
}
|
||||
local = {
|
||||
source = "hashicorp/local"
|
||||
version = ">= 2.0.0, < 3.0.0"
|
||||
}
|
||||
remote = {
|
||||
source = "tenstad/remote"
|
||||
version = "~> 0.0.23"
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -1,10 +1,10 @@
|
||||
output "controlplanes_public_ip" {
|
||||
value = concat([hcloud_server.first_control_plane.ipv4_address], hcloud_server.control_planes.*.ipv4_address)
|
||||
value = concat([module.first_control_plane.ipv4_address], module.control_planes.*.ipv4_address)
|
||||
description = "The public IP addresses of the controlplane server."
|
||||
}
|
||||
|
||||
output "agents_public_ip" {
|
||||
value = hcloud_server.agents.*.ipv4_address
|
||||
value = module.agents.*.ipv4_address
|
||||
description = "The public IP addresses of the agent server."
|
||||
}
|
||||
|
||||
|
||||
72
servers.tf
72
servers.tf
@ -1,69 +1,50 @@
|
||||
resource "hcloud_server" "control_planes" {
|
||||
module "control_planes" {
|
||||
source = "./modules/host"
|
||||
|
||||
count = var.servers_num - 1
|
||||
name = "k3s-control-plane-${count.index + 1}"
|
||||
|
||||
image = data.hcloud_image.linux.name
|
||||
rescue = "linux64"
|
||||
server_type = var.control_plane_server_type
|
||||
location = var.location
|
||||
ssh_keys = [hcloud_ssh_key.k3s.id]
|
||||
public_key = var.public_key
|
||||
private_key = var.private_key
|
||||
firewall_ids = [hcloud_firewall.k3s.id]
|
||||
placement_group_id = hcloud_placement_group.k3s.id
|
||||
location = var.location
|
||||
network_id = hcloud_network.k3s.id
|
||||
ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 258 + count.index)
|
||||
server_type = var.control_plane_server_type
|
||||
|
||||
labels = {
|
||||
"provisioner" = "terraform",
|
||||
"engine" = "k3s",
|
||||
"engine" = "k3s"
|
||||
}
|
||||
|
||||
hcloud_token = var.hcloud_token
|
||||
}
|
||||
|
||||
resource "null_resource" "control_planes" {
|
||||
count = var.servers_num - 1
|
||||
|
||||
triggers = {
|
||||
control_plane_id = module.control_planes[count.index].id
|
||||
}
|
||||
|
||||
connection {
|
||||
user = "root"
|
||||
private_key = local.ssh_private_key
|
||||
agent_identity = local.ssh_identity
|
||||
host = self.ipv4_address
|
||||
}
|
||||
|
||||
provisioner "file" {
|
||||
content = templatefile("${path.module}/templates/config.ign.tpl", {
|
||||
name = self.name
|
||||
ssh_public_key = local.ssh_public_key
|
||||
})
|
||||
destination = "/root/config.ign"
|
||||
}
|
||||
|
||||
# Combustion script file to install k3s-selinux
|
||||
provisioner "file" {
|
||||
content = local.combustion_script
|
||||
destination = "/root/script"
|
||||
}
|
||||
|
||||
# Install MicroOS
|
||||
provisioner "remote-exec" {
|
||||
inline = local.microOS_install_commands
|
||||
}
|
||||
|
||||
# Issue a reboot command and wait for the node to reboot
|
||||
provisioner "local-exec" {
|
||||
command = "ssh ${local.ssh_args} root@${self.ipv4_address} '(sleep 2; reboot)&'; sleep 3"
|
||||
}
|
||||
provisioner "local-exec" {
|
||||
command = <<-EOT
|
||||
until ssh ${local.ssh_args} -o ConnectTimeout=2 root@${self.ipv4_address} true 2> /dev/null
|
||||
do
|
||||
echo "Waiting for MicroOS to reboot and become available..."
|
||||
sleep 3
|
||||
done
|
||||
EOT
|
||||
host = module.control_planes[count.index].ipv4_address
|
||||
}
|
||||
|
||||
# Generating k3s server config file
|
||||
provisioner "file" {
|
||||
content = yamlencode({
|
||||
node-name = self.name
|
||||
node-name = module.control_planes[count.index].name
|
||||
server = "https://${local.first_control_plane_network_ip}:6443"
|
||||
token = random_password.k3s_token.result
|
||||
cluster-init = true
|
||||
disable-cloud-controller = true
|
||||
disable = "servicelb, local-storage"
|
||||
disable = ["servicelb", "local-storage"]
|
||||
flannel-iface = "eth1"
|
||||
kubelet-arg = "cloud-provider=external"
|
||||
node-ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 258 + count.index)
|
||||
@ -95,13 +76,8 @@ resource "hcloud_server" "control_planes" {
|
||||
]
|
||||
}
|
||||
|
||||
network {
|
||||
network_id = hcloud_network.k3s.id
|
||||
ip = cidrhost(hcloud_network_subnet.k3s.ip_range, 258 + count.index)
|
||||
}
|
||||
|
||||
depends_on = [
|
||||
hcloud_server.first_control_plane,
|
||||
null_resource.first_control_plane,
|
||||
hcloud_network_subnet.k3s
|
||||
]
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user