This commit is contained in:
2023-10-18 16:57:40 +02:00
parent 9b172c24ae
commit 8661e6bef9
15 changed files with 520 additions and 180 deletions

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locals {
app-name = var.component == var.instance ? var.instance : format("%s-%s", var.component, var.instance)
main-group = format("app-%s", local.app-name)
}
data "authentik_group" "akadmin" {
name = "authentik Admins"
}
resource "authentik_group" "groups" {
name = local.main-group
attributes = jsonencode({"${local.app-name}" = true})
}
resource "authentik_group" "subgroup" {
count = length(var.sub-groups)
name = format("%s-%s", local.app-name, var.sub-groups[count.index])
parent = authentik_group.prj_users.id
}
resource "authentik_application" "prj_app" {
name = "${var.instance}"
slug = "${var.component}-${var.instance}"
group = var.app-group
protocol_provider = var.protocol_provider
meta_launch_url = format("https://%s.%s", var.sub-domain, var.domain-name)
meta_icon = format("https://%s.%s/%s", var.sub-domain, var.domain-name, var.icon)
}
resource "authentik_policy_expression" "policy" {
name = local.main-group
expression = <<-EOF
attr = request.user.group_attributes()
return attr['${local.app-name}'] if '${local.app-name}' in attr else False
EOF
}
resource "authentik_policy_binding" "prj_access_users" {
target = authentik_application.prj_app.uuid
policy = authentik_policy_expression.policy.id
order = 0
}
resource "authentik_policy_binding" "prj_access_vynil" {
target = authentik_application.prj_app.uuid
group = data.authentik_group.akadmin.id
order = 1
}

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variable "component" {
type = string
}
variable "instance" {
type = string
}
variable "icon" {
type = string
}
variable "app-group" {
type = string
}
variable "protocol_provider" {
type = number
}
variable "sub-domain" {
type = string
}
variable "domain-name" {
type = string
}
variable "sub-groups" {
type = list(string)
default = []
}

125
modules/forward/forward.tf Normal file
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locals {
request_headers = {
"Content-Type" = "application/json"
Authorization = "Bearer ${var.authentik-token}"
}
forward-outpost-providers = jsondecode(data.http.get_forward_outpost.response_body).results[0].providers
forward-outpost-pk = jsondecode(data.http.get_forward_outpost.response_body).results[0].pk
app-name = var.component == var.instance ? var.instance : format("%s-%s", var.component, var.instance)
main-group = format("app-%s", local.app-name)
external-url = format("https://%s", var.dns-names[0])
rules-icons = [ for v in var.dns-names : {
"host" = "${v}"
"http" = {
"paths" = [{
"backend" = {
"service" = local.service
}
"path" = "/${var.icon}"
"pathType" = "Prefix"
}]
}
}]
}
resource "kubectl_manifest" "prj_ingress_icon" {
force_conflicts = true
yaml_body = <<-EOF
apiVersion: "networking.k8s.io/v1"
kind: "Ingress"
metadata:
name: "${var.instance}-icons"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
spec:
ingressClassName: "${var.ingress-class}"
rules: ${jsonencode(local.rules-icons)}
tls:
- hosts: ${jsonencode(var.dns-names)}
secretName: "${var.instance}-cert"
EOF
}
data "authentik_flow" "default-authorization-flow" {
depends_on = [authentik_group.prj_users]
slug = "default-provider-authorization-implicit-consent"
}
resource "authentik_provider_proxy" "prj_forward" {
name = local.app-name
external_host = local.external-url
authorization_flow = data.authentik_flow.default-authorization-flow.id
mode = "forward_single"
access_token_validity = var.access-token-validity
}
resource "authentik_policy_binding" "prj_access_users" {
target = authentik_application.prj_application.uuid
policy = authentik_policy_expression.policy.id
order = 0
}
resource "authentik_policy_binding" "prj_access_vynil" {
target = authentik_application.prj_application.uuid
group = data.authentik_group.vynil-admin.id
order = 1
}
data "http" "get_forward_outpost" {
depends_on = [authentik_provider_proxy.prj_forward]
url = "http://authentik.${var.domain}-auth.svc/api/v3/outposts/instances/?name__iexact=forward"
method = "GET"
request_headers = local.request_headers
lifecycle {
postcondition {
condition = contains([200], self.status_code)
error_message = "Status code invalid"
}
}
}
provider "restapi" {
uri = "http://authentik.${var.domain}-auth.svc/api/v3/"
headers = local.request_headers
create_method = "PATCH"
update_method = "PATCH"
destroy_method = "PATCH"
write_returns_object = true
id_attribute = "name"
}
resource "restapi_object" "forward_outpost_binding" {
path = "/outposts/instances/${local.forward-outpost-pk}/"
data = jsonencode({
name = "forward"
providers = contains(local.forward-outpost-providers, authentik_provider_proxy.prj_forward.id) ? local.forward-outpost-providers : concat(local.forward-outpost-providers, [authentik_provider_proxy.prj_forward.id])
})
}
resource "kubectl_manifest" "prj_middleware" {
yaml_body = <<-EOF
apiVersion: traefik.containo.us/v1alpha1
kind: Middleware
metadata:
name: "forward-${local.app-name}"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
spec:
forwardAuth:
address: http://ak-outpost-forward.${var.domain}-auth.svc:9000/outpost.goauthentik.io/auth/traefik
trustForwardHeader: true
authResponseHeaders:
- X-authentik-username
# - X-authentik-groups
# - X-authentik-email
# - X-authentik-name
# - X-authentik-uid
# - X-authentik-jwt
# - X-authentik-meta-jwks
# - X-authentik-meta-outpost
# - X-authentik-meta-provider
# - X-authentik-meta-app
# - X-authentik-meta-version
EOF
}

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output "provider-id" {
value = authentik_provider_proxy.prj_forward.id
}

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variable "component" {
type = string
}
variable "instance" {
type = string
}
variable "domain" {
type = string
}
variable "namespace" {
type = string
}
variable "ingress-class" {
type = string
}
variable "labels" {
type = map(string)
}
variable "authentik-token" {
type = string
}
variable "dns-names" {
type = list(string)
}
variable "access-token-validity" {
type = string
default = "hours=10" // ;minutes=10
}

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locals {
rules = [ for v in var.dns-names : {
"host" = "${v}"
"http" = {
"paths" = [{
"backend" = {
"service" = var.service
}
"path" = "/"
"pathType" = "Prefix"
}]
}
}]
}
resource "kubectl_manifest" "prj_certificate" {
yaml_body = <<-EOF
apiVersion: "cert-manager.io/v1"
kind: "Certificate"
metadata:
name: "${var.instance}"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
spec:
secretName: "${var.instance}-cert"
dnsNames: ${jsonencode(var.dns-names)}
issuerRef:
name: "${var.issuer}"
kind: "ClusterIssuer"
group: "cert-manager.io"
EOF
}
resource "kubectl_manifest" "prj_https_redirect" {
yaml_body = <<-EOF
apiVersion: "traefik.containo.us/v1alpha1"
kind: "Middleware"
metadata:
name: "${var.instance}-https"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
spec:
redirectScheme:
scheme: "https"
permanent: true
EOF
}
resource "kubectl_manifest" "prj_ingress" {
force_conflicts = true
yaml_body = <<-EOF
apiVersion: "networking.k8s.io/v1"
kind: "Ingress"
metadata:
name: "${var.instance}"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
annotations:
"traefik.ingress.kubernetes.io/router.middlewares": "${join(",", [for m in var.middlewares : format("%s-%s@kubernetescrd", var.namespace, m)])}"
spec:
ingressClassName: "${var.ingress-class}"
rules: ${jsonencode(local.rules)}
tls:
- hosts: ${jsonencode(var.dns-names)}
secretName: "${var.instance}-cert"
EOF
}

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variable "component" {
type = string
}
variable "instance" {
type = string
}
variable "namespace" {
type = string
}
variable "issuer" {
type = string
}
variable "ingress-class" {
type = string
}
variable "labels" {
type = map(string)
}
variable "dns-names" {
type = list(string)
}
variable "middlewares" {
type = list(string)
default = ["${var.instance}-https"]
}
variable "service" {
default = {
"name" = "${var.component}-${var.instance}"
"port" = {
"number" = 80
}
}
}

66
modules/oauth2/oauth2.tf Normal file
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resource "kubectl_manifest" "oauth2-secret" {
ignore_fields = ["metadata.annotations"]
yaml_body = <<-EOF
apiVersion: "secretgenerator.mittwald.de/v1alpha1"
kind: "StringSecret"
metadata:
name: "${var.component}-${var.instance}-id"
namespace: "${var.namespace}"
labels: ${jsonencode(var.labels)}
spec:
forceRegenerate: false
fields:
- fieldName: "client-id"
length: "32"
EOF
}
data "kubernetes_secret_v1" "oauth2-client-id" {
depends_on = [kubectl_manifest.oauth2-secret]
metadata {
name = kubectl_manifest.oauth2-secret.name
namespace = var.namespace
}
}
data "authentik_certificate_key_pair" "ca" {
name = "authentik Self-signed Certificate"
}
data "authentik_scope_mapping" "oauth2" {
managed_list = [
"goauthentik.io/providers/oauth2/scope-email",
"goauthentik.io/providers/oauth2/scope-openid",
"goauthentik.io/providers/oauth2/scope-profile"
]
}
data "authentik_flow" "default-authorization-flow" {
slug = "default-provider-authorization-implicit-consent"
}
data "authentik_flow" "default-authentication-flow" {
slug = "default-authentication-flow"
}
resource "authentik_provider_oauth2" "oauth2" {
name = "${var.component}-${var.instance}"
client_id = "${data.kubernetes_secret_v1.oauth2-client-id.data["client-id"]}"
authentication_flow = data.authentik_flow.default-authentication-flow.id
authorization_flow = data.authentik_flow.default-authorization-flow.id
client_type = "confidential"
sub_mode = "user_username"
signing_key = data.authentik_certificate_key_pair.ca.id
property_mappings = data.authentik_scope_mapping.oauth2.ids
redirect_uris = [
"https://${var.dns-name}/"
]
}
resource "kubernetes_secret_v1" "oauth2-client-secret" {
metadata {
name = "${var.component}-${var.instance}-secret"
namespace = var.namespace
labels = var.labels
}
data = {
client-secret = authentik_provider_oauth2.oauth2.client_secret
}
}

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output "provider-id" {
value = authentik_provider_oauth2.oauth2.id
}

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variable "component" {
type = string
}
variable "instance" {
type = string
}
variable "namespace" {
type = string
}
variable "labels" {
type = map(string)
}
variable "dns-name" {
type = string
}