Remove asset_dir variable and optional asset writes

* Originally, poseidon/terraform-render-bootstrap generated
TLS certificates, manifests, and cluster "assets" written
to local disk (`asset_dir`) during terraform apply cluster
bootstrap
* Typhoon v1.17.0 introduced bootstrapping using only Terraform
state to store cluster assets, to avoid ever writing sensitive
materials to disk and improve automated use-cases. `asset_dir`
was changed to optional and defaulted to "" (no writes)
* Typhoon v1.18.0 deprecated the `asset_dir` variable, removed
docs, and announced it would be deleted in future.
* Add Terraform output `assets_dir` map
* Remove the `asset_dir` variable

Cluster assets are now stored in Terraform state only. For those
who wish to write those assets to local files, this is possible
doing so explicitly.

```
resource local_file "assets" {
  for_each = module.yavin.assets_dist
  filename = "some-assets/${each.key}"
  content = each.value
}
```

Related:

* https://github.com/poseidon/typhoon/pull/595
* https://github.com/poseidon/typhoon/pull/678

CHANGES.md

@@ -4,6 +4,8 @@ Notable changes between versions.
 
 ## Latest
 
+* Remove `asset_dir` variable (default off in [v1.17.0](https://github.com/poseidon/typhoon/pull/595), deprecated in [v1.18.0](https://github.com/poseidon/typhoon/pull/678))
+
 ## v1.19.3
 
 * Update Cilium from v1.8.3 to [v1.8.4](https://github.com/cilium/cilium/releases/tag/v1.8.4)

aws/container-linux/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers          = aws_route53_record.etcds.*.fqdn
-  asset_dir             = var.asset_dir
   networking            = var.networking
   network_mtu           = var.network_mtu
   pod_cidr              = var.pod_cidr

aws/container-linux/kubernetes/outputs.tf

@@ -52,3 +52,9 @@ output "worker_target_group_https" {
   value       = module.workers.target_group_https
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

aws/container-linux/kubernetes/variables.tf

@@ -149,12 +149,6 @@ variable "worker_node_labels" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by CoreDNS. Default is cluster.local (e.g. foo.default.svc.cluster.local)"

aws/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers          = aws_route53_record.etcds.*.fqdn
-  asset_dir             = var.asset_dir
   networking            = var.networking
   network_mtu           = var.network_mtu
   pod_cidr              = var.pod_cidr

aws/fedora-coreos/kubernetes/outputs.tf

@@ -52,3 +52,9 @@ output "worker_target_group_https" {
   value       = module.workers.target_group_https
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

aws/fedora-coreos/kubernetes/variables.tf

@@ -96,12 +96,6 @@ variable "ssh_authorized_key" {
   description = "SSH public key for user 'core'"
 }
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "networking" {
   type        = string
   description = "Choice of networking provider (calico or flannel)"

azure/container-linux/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers = formatlist("%s.%s", azurerm_dns_a_record.etcds.*.name, var.dns_zone)
-  asset_dir    = var.asset_dir
 
   networking = var.networking
 

azure/container-linux/kubernetes/outputs.tf

@@ -57,3 +57,10 @@ output "backend_address_pool_id" {
   description = "ID of the worker backend address pool"
   value       = azurerm_lb_backend_address_pool.worker.id
 }
+
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

azure/container-linux/kubernetes/variables.tf

@@ -130,12 +130,6 @@ variable "worker_node_labels" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

azure/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers = formatlist("%s.%s", azurerm_dns_a_record.etcds.*.name, var.dns_zone)
-  asset_dir    = var.asset_dir
 
   networking = var.networking
 

azure/fedora-coreos/kubernetes/outputs.tf

@@ -57,3 +57,10 @@ output "backend_address_pool_id" {
   description = "ID of the worker backend address pool"
   value       = azurerm_lb_backend_address_pool.worker.id
 }
+
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

azure/fedora-coreos/kubernetes/variables.tf

@@ -129,12 +129,6 @@ variable "worker_node_labels" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

bare-metal/container-linux/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]
   etcd_servers                    = var.controllers.*.domain
-  asset_dir                       = var.asset_dir
   networking                      = var.networking
   network_mtu                     = var.network_mtu
   network_ip_autodetection_method = var.network_ip_autodetection_method

bare-metal/container-linux/kubernetes/outputs.tf

@@ -2,3 +2,9 @@ output "kubeconfig-admin" {
   value = module.bootstrap.kubeconfig-admin
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

bare-metal/container-linux/kubernetes/variables.tf

@@ -152,12 +152,6 @@ variable "enable_aggregation" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

bare-metal/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name                    = var.cluster_name
   api_servers                     = [var.k8s_domain_name]
   etcd_servers                    = var.controllers.*.domain
-  asset_dir                       = var.asset_dir
   networking                      = var.networking
   network_mtu                     = var.network_mtu
   network_ip_autodetection_method = var.network_ip_autodetection_method

bare-metal/fedora-coreos/kubernetes/outputs.tf

@@ -2,3 +2,9 @@ output "kubeconfig-admin" {
   value = module.bootstrap.kubeconfig-admin
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

bare-metal/fedora-coreos/kubernetes/variables.tf

@@ -80,12 +80,6 @@ variable "ssh_authorized_key" {
   description = "SSH public key for user 'core'"
 }
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "networking" {
   type        = string
   description = "Choice of networking provider (flannel or calico)"

digital-ocean/container-linux/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers = digitalocean_record.etcds.*.fqdn
-  asset_dir    = var.asset_dir
 
   networking = var.networking
 

digital-ocean/container-linux/kubernetes/outputs.tf

@@ -54,3 +54,9 @@ output "vpc_id" {
   value       = digitalocean_vpc.network.id
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

digital-ocean/container-linux/kubernetes/variables.tf

@@ -100,12 +100,6 @@ variable "enable_aggregation" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

digital-ocean/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name = var.cluster_name
   api_servers  = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers = digitalocean_record.etcds.*.fqdn
-  asset_dir    = var.asset_dir
 
   networking = var.networking
 

digital-ocean/fedora-coreos/kubernetes/outputs.tf

@@ -53,3 +53,10 @@ output "vpc_id" {
   description = "ID of the cluster VPC"
   value       = digitalocean_vpc.network.id
 }
+
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

digital-ocean/fedora-coreos/kubernetes/variables.tf

@@ -100,12 +100,6 @@ variable "enable_aggregation" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

google-cloud/container-linux/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers          = google_dns_record_set.etcds.*.name
-  asset_dir             = var.asset_dir
   networking            = var.networking
   network_mtu           = 1440
   pod_cidr              = var.pod_cidr

google-cloud/container-linux/kubernetes/outputs.tf

@@ -42,3 +42,9 @@ output "worker_target_pool" {
   value       = module.workers.target_pool
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

google-cloud/container-linux/kubernetes/variables.tf

@@ -124,12 +124,6 @@ variable "worker_node_labels" {
 
 # unofficial, undocumented, unsupported
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "cluster_domain_suffix" {
   type        = string
   description = "Queries for domains with the suffix will be answered by coredns. Default is cluster.local (e.g. foo.default.svc.cluster.local) "

google-cloud/fedora-coreos/kubernetes/bootstrap.tf

@@ -1,11 +1,10 @@
 # Kubernetes assets (kubeconfig, manifests)
 module "bootstrap" {
-  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=7988fb7159cb81e2d080b365b147fe90542fd258"
+  source = "git::https://github.com/poseidon/terraform-render-bootstrap.git?ref=9037d7311b949439b217cd9c657d4500eab3e16b"
 
   cluster_name          = var.cluster_name
   api_servers           = [format("%s.%s", var.cluster_name, var.dns_zone)]
   etcd_servers          = google_dns_record_set.etcds.*.name
-  asset_dir             = var.asset_dir
   networking            = var.networking
   network_mtu           = 1440
   pod_cidr              = var.pod_cidr

google-cloud/fedora-coreos/kubernetes/outputs.tf

@@ -42,3 +42,9 @@ output "worker_target_pool" {
   value       = module.workers.target_pool
 }
 
+# Outputs for debug
+
+output "assets_dist" {
+  value = module.bootstrap.assets_dist
+}
+

google-cloud/fedora-coreos/kubernetes/variables.tf

@@ -83,12 +83,6 @@ variable "ssh_authorized_key" {
   description = "SSH public key for user 'core'"
 }
 
-variable "asset_dir" {
-  type        = string
-  description = "Absolute path to a directory where generated assets should be placed (contains secrets)"
-  default     = ""
-}
-
 variable "networking" {
   type        = string
   description = "Choice of networking provider (flannel or calico)"