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Add cloudflare

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This commit is contained in:
Kasper Juul Hermansen 2022-05-08 15:51:41 +02:00
parent 2d86502991
commit 1c2d58f090
Signed by: kjuulh
GPG Key ID: 0F95C140730F2F23
7 changed files with 4149 additions and 192 deletions
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.gitignore vendored
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terraform.tfvars
.terraform.lock.hcl
.terraform/
.keys/
kubeconfig.yaml
kustomization_backup.yaml

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main.tf
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module "kube-hetzner" {
source = "kube-hetzner/kube-hetzner/hcloud"
source = "kube-hetzner/kube-hetzner/hcloud"
hcloud_token = vars.hcloud_token
hcloud_token = var.hcloud_token
# insert the required variables here found in terraform.tfvars.example
#
# Only the first values starting with a * are obligatory; the rest can remain with their default values, or you
# could adapt them to your needs.
#
# Note that some values, notably "location" and "public_key" have no effect after initializing the cluster.
# This is to keep Terraform from re-provisioning all nodes at once, which would lose data. If you want to update
# those, you should instead change the value here and manually re-provision each node. Grep for "lifecycle".
public_key = ".keys/id_ed25519.pub"
private_key = ".keys/id_ed25519"
# * Your Hetzner project API token
public_key = "./keys/id_ed25519.pub"
# * Your private key must be "private_key = null" when you want to use ssh-agent for a Yubikey-like device authentification or an SSH key-pair with a passphrase.
# For more details on SSH see https://github.com/kube-hetzner/kube-hetzner/blob/master/docs/ssh.md
private_key = "./keys/id_ed25519"
network_region = "eu-central" # change to `us-east` if location is ash
control_plane_nodepools = [
{
name = "control-plane-fsn1",
server_type = "cpx11",
location = "fsn1",
labels = [],
taints = [],
count = 1
},
{
name = "control-plane-nbg1",
server_type = "cpx11",
location = "nbg1",
labels = [],
taints = [],
count = 1
},
{
name = "control-plane-hel1",
server_type = "cpx11",
location = "hel1",
labels = [],
taints = [],
count = 1
}
]
# These can be customized, or left with the default values
# * For Hetzner locations see https://docs.hetzner.com/general/others/data-centers-and-connection/
network_region = "eu-central" # change to `us-east` if location is ash
agent_nodepools = [
{
name = "agent-small1",
server_type = "cpx11",
location = "fsn1",
labels = [],
taints = [],
count = 1
},
{
name = "agent-small2",
server_type = "cpx11",
location = "nbg1",
labels = [],
taints = [],
count = 1
},
{
name = "storage1",
server_type = "cpx11",
location = "fsn1",
labels = [
"node.kubernetes.io/server-usage=storage"
],
taints = [
"server-usage=storage:NoSchedule"
],
count = 1
}
]
# For the control planes, at least three nodes are the minimum for HA. Otherwise, you need to turn off the automatic upgrade (see ReadMe).
# As per Rancher docs, it must always be an odd number, never even! See https://rancher.com/docs/k3s/latest/en/installation/ha-embedded/
# For instance, one is ok (non-HA), two is not ok, and three is ok (becomes HA). It does not matter if they are in the same nodepool or not! So they can be in different locations and of various types.
load_balancer_type = "lb11"
load_balancer_location = "fsn1"
traefik_enabled = true
metrics_server_enabled = true
automatically_upgrade_k3s = true
initial_k3s_channel = "stable"
cluster_name = "clank"
use_cluster_name_in_node_name = true
# Of course, you can choose any number of nodepools you want, with the location you want. The only constraint on the location is that you need to stay in the same network region, Europe, or the US.
# For the server type, the minimum instance supported is cpx11 (just a few cents more than cx11); see https://www.hetzner.com/cloud.
# Adding extra firewall rules, like opening a port
# More info on the format here https://registry.terraform.io/providers/hetznercloud/hcloud/latest/docs/resources/firewall
# extra_firewall_rules = [
# # For Postgres
# {
# direction = "in"
# protocol = "tcp"
# port = "5432"
# source_ips = ["0.0.0.0/0", "::/0"]
# destination_ips = [] # Won't be used for this rule
# },
# # To Allow ArgoCD access to resources via SSH
# {
# direction = "out"
# protocol = "tcp"
# port = "22"
# source_ips = [] # Won't be used for this rule
# destination_ips = ["0.0.0.0/0", "::/0"]
# }
# ]
# IMPORTANT: Before you create your cluster, you can do anything you want with the nodepools, but you need at least one of each control plane and agent.
# Once the cluster is up and running, you can change nodepool count and even set it to 0 (in the case of the first control-plane nodepool, the minimum is 1),
# you can also rename it (if the count is 0), but do not remove a nodepool from the list.
# The only nodepools that are safe to remove from the list when you edit it are at the end of the lists. That is due to how subnets and IPs get allocated (FILO).
# You can, however, freely add other nodepools at the end of each list if you want! The maximum number of nodepools you can create combined for both lists is 255.
# Also, before decreasing the count of any nodepools to 0, it's essential to drain and cordon the nodes in question. Otherwise, it will leave your cluster in a bad state.
# Before initializing the cluster, you can change all parameters and add or remove any nodepools. You need at least one nodepool of each kind, control plane, and agent.
# The nodepool names are entirely arbitrary, you can choose whatever you want, but no special characters or underscore, and they must be unique; only alphanumeric characters and dashes are allowed.
# If you want to have a single node cluster, have one control plane nodepools with a count of 1, and one agent nodepool with a count of 0.
# * Example below:
control_plane_nodepools = [
{
name = "control-plane-fsn1",
server_type = "cpx11",
location = "fsn1",
labels = [],
taints = [],
count = 1
},
{
name = "control-plane-nbg1",
server_type = "cpx11",
location = "nbg1",
labels = [],
taints = [],
count = 1
},
{
name = "control-plane-hel1",
server_type = "cpx11",
location = "hel1",
labels = [],
taints = [],
count = 1
}
]
agent_nodepools = [
{
name = "agent-small1",
server_type = "cpx11",
location = "fsn1",
labels = [],
taints = [],
count = 1
},
{
name = "agent-small2",
server_type = "cpx11",
location = "nbg1",
labels = [],
taints = [],
count = 1
},
{
name = "storage1",
server_type = "cpx11",
location = "fsn1",
labels = [
"node.kubernetes.io/server-usage=storage"
],
taints = [
"server-usage=storage:NoSchedule"
],
count = 1
}
]
# * LB location and type, the latter will depend on how much load you want it to handle, see https://www.hetzner.com/cloud/load-balancer
load_balancer_type = "lb11"
load_balancer_location = "fsn1"
### The following values are entirely optional
# To use local storage on the nodes, you can enable Longhorn, default is "false".
# enable_longhorn = true
# To disable Hetzner CSI storage, you can set the following to true, default is "false".
# disable_hetzner_csi = true
# traefik_acme_tls = true
# traefik_acme_email = "mail@example.com"
traefik_enabled = true
metrics_server_enabled = true
# If you want to allow non-control-plane workloads to run on the control-plane nodes, set "true" below. The default is "false".
# True by default for single node clusters.
# allow_scheduling_on_control_plane = true
# If you want to disable the automatic upgrade of k3s, you can set this to false. The default is "true".
automatically_upgrade_k3s = true
# Allows you to specify either stable, latest, testing or supported minor versions (defaults to stable)
# see https://rancher.com/docs/k3s/latest/en/upgrades/basic/ and https://update.k3s.io/v1-release/channels
initial_k3s_channel = "stable"
# The cluster name, by default "k3s"
cluster_name = "clank"
# Whether to use the cluster name in the node name, in the form of {cluster_name}-{nodepool_name}, the default is "true".
use_cluster_name_in_node_name = true
# Adding extra firewall rules, like opening a port
# More info on the format here https://registry.terraform.io/providers/hetznercloud/hcloud/latest/docs/resources/firewall
# extra_firewall_rules = [
# # For Postgres
# {
# direction = "in"
# protocol = "tcp"
# port = "5432"
# source_ips = ["0.0.0.0/0", "::/0"]
# destination_ips = [] # Won't be used for this rule
# },
# # To Allow ArgoCD access to resources via SSH
# {
# direction = "out"
# protocol = "tcp"
# port = "22"
# source_ips = [] # Won't be used for this rule
# destination_ips = ["0.0.0.0/0", "::/0"]
# }
# ]
# If you want to configure additional Arguments for traefik, enter them here as a list and in the form of traefik CLI arguments; see https://doc.traefik.io/traefik/reference/static-configuration/cli/
# Example: traefik_additional_options = ["--log.level=DEBUG", "--tracing=true"]
traefik_additional_options = [ "--tracing=true"]
# If you want to configure a different CNI for k3s, use this flag
# possible values: flannel (Default), calico
# Cilium or other would be easy to add, you can mirror how Calico was added. PRs are welcome!
# CAVEATS: Calico is not supported for single node setups, because of the following issue https://github.com/k3s-io/klipper-lb/issues/6.
# cni_plugin = "calico"
# If you want to disable the k3s default network policy controller, use this flag!
# Calico overrides this value to true automatically, the default is "false".
# disable_network_policy = true
# If you want to disable the automatic use of placement group "spread". See https://docs.hetzner.com/cloud/placement-groups/overview/
# That may be useful if you need to deploy more than 500 nodes! The default is "false".
# placement_group_disable = true
# You can enable cert-manager (installed by Helm behind the scenes) with the following flag, the default is "false".
enable_cert_manager = true
# You can enable Rancher (installed by Helm behind the scenes) with the following flag, the default is "false".
# When Rancher is enabled, it automatically installs cert-manager too, and it uses rancher's own certificates.
# As for the number of replicas, it is set to the numbe of control plane nodes.
# You can customized all of the above by creating and applying a HelmChartConfig to pass the helm chart values of your choice.
# See https://rancher.com/docs/k3s/latest/en/helm/
# and https://rancher.com/docs/rancher/v2.6/en/installation/install-rancher-on-k8s/chart-options/
# enable_rancher = true
# When Rancher is deployed, by default is uses the "stable" channel. But this can be customized.
# The allowed values are "stable", "latest", and "alpha".
# rancher_install_channel = "latest"
# Set your Rancher hostname, the default is "rancher.example.com".
# It is a required value when using rancher, but up to you to point the DNS to it or not.
# You can also not point the DNS, and just port-forward locally via kubectl to get access to the dashboard.
# rancher_hostname = "rancher.xyz.dev"#
#
# If you want to configure additional Arguments for traefik, enter them here as a list and in the form of traefik CLI arguments; see https://doc.traefik.io/traefik/reference/static-configuration/cli/
# Example: traefik_additional_options = ["--log.level=DEBUG", "--tracing=true"]
traefik_additional_options = ["--tracing=true"]
enable_cert_manager = true
}
module "dns" {
source = "./modules/cloudflare"
api_token = var.cloudflare_api_token
zone_id = "9454b35cb1010b9eab9aadf206fdf11f"
records = [
{
name = "kjuulh.app",
ip = module.kube-hetzner.load_balancer_public_ipv4
ip_type = "A"
},
{
name = "*.kjuulh.app",
ip = module.kube-hetzner.load_balancer_public_ipv4
ip_type = "A"
}
]
}

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modules/cloudflare/main.tf Normal file
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terraform {
required_providers {
cloudflare = {
source = "cloudflare/cloudflare"
version = "~> 3.0"
}
}
}
provider "cloudflare" {
api_token = var.api_token
}
resource "cloudflare_record" "exact" {
zone_id = var.zone_id
for_each = { for record in var.records : record.name => record }
name = each.value.name
value = each.value.ip
type = each.value.ip_type
ttl = 3600
}

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variable "api_token" {
description = "cloudflare token"
type = string
nullable = false
sensitive = true
}
variable "zone_id" {
description = "cloudflare zone id "
type = string
nullable = false
}
variable "records" {
description = "cloudflare records"
type = list(object({
name = string
ip = string
ip_type = string
}))
}

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variable "hcloud_token" {
description = "Hetzner Cloud API Token"
type = string
sensitive = true
type = string
sensitive = true
}
variable "cloudflare_api_token" {
description = "Hetzner Cloud API Token"
type = string
sensitive = true
}