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feat!: update kube-dns configMap using kubernetes_config_map_v1_data #1214

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Apr 14, 2022
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feat!: update kube-dns configMap using kubernetes_config_map_v1_data #1214

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b364173
feat!: kube-dns using kubernetes_config_map_v1_data
apeabody Apr 12, 2022
839ec51
fix: node_pool test with node auto-provisioning
apeabody Apr 14, 2022
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2 changes: 0 additions & 2 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -148,12 +148,10 @@ Then perform the following commands on the root folder:
| filestore\_csi\_driver | The status of the Filestore CSI driver addon, which allows the usage of filestore instance as volumes | `bool` | `false` | no |
| firewall\_inbound\_ports | List of TCP ports for admission/webhook controllers. Either flag `add_master_webhook_firewall_rules` or `add_cluster_firewall_rules` (also adds egress rules) must be set to `true` for inbound-ports firewall rules to be applied. | `list(string)` | <pre>[<br> "8443",<br> "9443",<br> "15017"<br>]</pre> | no |
| firewall\_priority | Priority rule for firewall rules | `number` | `1000` | no |
| gcloud\_upgrade | Whether to upgrade gcloud at runtime | `bool` | `false` | no |
| grant\_registry\_access | Grants created cluster-specific service account storage.objectViewer and artifactregistry.reader roles. | `bool` | `false` | no |
| horizontal\_pod\_autoscaling | Enable horizontal pod autoscaling addon | `bool` | `true` | no |
| http\_load\_balancing | Enable httpload balancer addon | `bool` | `true` | no |
| identity\_namespace | The workload pool to attach all Kubernetes service accounts to. (Default value of `enabled` automatically sets project-based pool `[project_id].svc.id.goog`) | `string` | `"enabled"` | no |
| impersonate\_service\_account | An optional service account to impersonate for gcloud commands. If this service account is not specified, the module will use Application Default Credentials. | `string` | `""` | no |
| initial\_node\_count | The number of nodes to create in this cluster's default node pool. | `number` | `0` | no |
| ip\_masq\_link\_local | Whether to masquerade traffic to the link-local prefix (169.254.0.0/16). | `bool` | `false` | no |
| ip\_masq\_resync\_interval | The interval at which the agent attempts to sync its ConfigMap file from the disk. | `string` | `"60s"` | no |
Expand Down
56 changes: 11 additions & 45 deletions autogen/main/dns.tf.tmpl
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Expand Up @@ -17,43 +17,15 @@
{{ autogeneration_note }}

/******************************************
Delete default kube-dns configmap
Manage kube-dns configmaps
*****************************************/
module "gcloud_delete_default_kube_dns_configmap" {
source = "terraform-google-modules/gcloud/google//modules/kubectl-wrapper"
version = "~> 3.1"

enabled = (local.custom_kube_dns_config || local.upstream_nameservers_config) && !var.skip_provisioners
cluster_name = google_container_cluster.primary.name
cluster_location = google_container_cluster.primary.location
project_id = var.project_id
upgrade = var.gcloud_upgrade
impersonate_service_account = var.impersonate_service_account
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kubectl_create_command = "${path.module}/scripts/delete-default-resource.sh kube-system configmap kube-dns"
kubectl_destroy_command = ""

module_depends_on = concat(
[google_container_cluster.primary.master_version],
{% if autopilot_cluster != true %}
[for pool in google_container_node_pool.pools : pool.name]
{% endif %}
)
}

/******************************************
Create kube-dns confimap
*****************************************/
resource "kubernetes_config_map" "kube-dns" {
resource "kubernetes_config_map_v1_data" "kube-dns" {
count = local.custom_kube_dns_config && !local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -62,26 +34,22 @@ ${jsonencode(var.stub_domains)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
{% if autopilot_cluster != true %}
google_container_node_pool.pools,
{% endif %}
]
}

resource "kubernetes_config_map" "kube-dns-upstream-namservers" {
resource "kubernetes_config_map_v1_data" "kube-dns-upstream-namservers" {
count = !local.custom_kube_dns_config && local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"

name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -90,25 +58,22 @@ ${jsonencode(var.upstream_nameservers)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
{% if autopilot_cluster != true %}
google_container_node_pool.pools,
{% endif %}
]
}

resource "kubernetes_config_map" "kube-dns-upstream-nameservers-and-stub-domains" {
resource "kubernetes_config_map_v1_data" "kube-dns-upstream-nameservers-and-stub-domains" {
count = local.custom_kube_dns_config && local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -121,8 +86,9 @@ ${jsonencode(var.stub_domains)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
{% if autopilot_cluster != true %}
google_container_node_pool.pools,
Expand Down
12 changes: 0 additions & 12 deletions autogen/main/variables.tf.tmpl
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Original file line number Diff line number Diff line change
Expand Up @@ -458,12 +458,6 @@ variable "firewall_inbound_ports" {
default = ["8443", "9443", "15017"]
}

variable "gcloud_upgrade" {
type = bool
description = "Whether to upgrade gcloud at runtime"
default = false
}

variable "add_shadow_firewall_rules" {
type = bool
description = "Create GKE shadow firewall (the same as default firewall rules with firewall logs enabled)."
Expand All @@ -490,12 +484,6 @@ variable "disable_default_snat" {
}
{% endif %}

variable "impersonate_service_account" {
type = string
description = "An optional service account to impersonate for gcloud commands. If this service account is not specified, the module will use Application Default Credentials."
default = ""
}

{% if beta_cluster %}
variable "notification_config_topic" {
type = string
Expand Down
4 changes: 2 additions & 2 deletions autogen/main/versions.tf.tmpl
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ terraform {
}
kubernetes = {
source = "hashicorp/kubernetes"
version = "~> 2.0"
version = "~> 2.10"
}
}
provider_meta "google-beta" {
Expand All @@ -42,7 +42,7 @@ terraform {
}
kubernetes = {
source = "hashicorp/kubernetes"
version = "~> 2.0"
version = "~> 2.10"
}
}
provider_meta "google" {
Expand Down
54 changes: 11 additions & 43 deletions dns.tf
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Original file line number Diff line number Diff line change
Expand Up @@ -17,41 +17,15 @@
// This file was automatically generated from a template in ./autogen/main

/******************************************
Delete default kube-dns configmap
Manage kube-dns configmaps
*****************************************/
module "gcloud_delete_default_kube_dns_configmap" {
source = "terraform-google-modules/gcloud/google//modules/kubectl-wrapper"
version = "~> 3.1"

enabled = (local.custom_kube_dns_config || local.upstream_nameservers_config) && !var.skip_provisioners
cluster_name = google_container_cluster.primary.name
cluster_location = google_container_cluster.primary.location
project_id = var.project_id
upgrade = var.gcloud_upgrade
impersonate_service_account = var.impersonate_service_account

kubectl_create_command = "${path.module}/scripts/delete-default-resource.sh kube-system configmap kube-dns"
kubectl_destroy_command = ""

module_depends_on = concat(
[google_container_cluster.primary.master_version],
[for pool in google_container_node_pool.pools : pool.name]
)
}

/******************************************
Create kube-dns confimap
*****************************************/
resource "kubernetes_config_map" "kube-dns" {
resource "kubernetes_config_map_v1_data" "kube-dns" {
count = local.custom_kube_dns_config && !local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -60,24 +34,20 @@ ${jsonencode(var.stub_domains)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
google_container_node_pool.pools,
]
}

resource "kubernetes_config_map" "kube-dns-upstream-namservers" {
resource "kubernetes_config_map_v1_data" "kube-dns-upstream-namservers" {
count = !local.custom_kube_dns_config && local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"

name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -86,23 +56,20 @@ ${jsonencode(var.upstream_nameservers)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
google_container_node_pool.pools,
]
}

resource "kubernetes_config_map" "kube-dns-upstream-nameservers-and-stub-domains" {
resource "kubernetes_config_map_v1_data" "kube-dns-upstream-nameservers-and-stub-domains" {
count = local.custom_kube_dns_config && local.upstream_nameservers_config ? 1 : 0

metadata {
name = "kube-dns"
namespace = "kube-system"

labels = {
maintained_by = "terraform"
}
}

data = {
Expand All @@ -115,8 +82,9 @@ ${jsonencode(var.stub_domains)}
EOF
}

force = true

depends_on = [
module.gcloud_delete_default_kube_dns_configmap.wait,
google_container_cluster.primary,
google_container_node_pool.pools,
]
Expand Down
16 changes: 16 additions & 0 deletions docs/upgrading_to_v21.0.md
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@@ -0,0 +1,16 @@
# Upgrading to v21.0

The v21.0 release of *kubernetes-engine* is a backwards incompatible
release.

### Terraform Kubernetes Engine Module

The [Terraform Kubernetes Engine Module](https://github.com/terraform-google-modules/terraform-google-kubernetes-engine) has been rewritten to use the 'kubernetes_config_map_v1_data' resouce added to the Terraform Kubernetes provider version 2.10.

1. Run `terraform state rm module.gke.kubernetes_config_map.kube-dns`
2. Update the module version to v21.0
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4. Run `terraform apply`

### Kubernetes Provider upgrade
The Terraform Kubernetes Engine module now requires version 2.10 or higher of
the Kubernetes Provider.
2 changes: 0 additions & 2 deletions modules/beta-autopilot-private-cluster/README.md
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Expand Up @@ -91,12 +91,10 @@ Then perform the following commands on the root folder:
| enable\_vertical\_pod\_autoscaling | Vertical Pod Autoscaling automatically adjusts the resources of pods controlled by it | `bool` | `false` | no |
| firewall\_inbound\_ports | List of TCP ports for admission/webhook controllers. Either flag `add_master_webhook_firewall_rules` or `add_cluster_firewall_rules` (also adds egress rules) must be set to `true` for inbound-ports firewall rules to be applied. | `list(string)` | <pre>[<br> "8443",<br> "9443",<br> "15017"<br>]</pre> | no |
| firewall\_priority | Priority rule for firewall rules | `number` | `1000` | no |
| gcloud\_upgrade | Whether to upgrade gcloud at runtime | `bool` | `false` | no |
| grant\_registry\_access | Grants created cluster-specific service account storage.objectViewer and artifactregistry.reader roles. | `bool` | `false` | no |
| horizontal\_pod\_autoscaling | Enable horizontal pod autoscaling addon | `bool` | `true` | no |
| http\_load\_balancing | Enable httpload balancer addon | `bool` | `true` | no |
| identity\_namespace | The workload pool to attach all Kubernetes service accounts to. (Default value of `enabled` automatically sets project-based pool `[project_id].svc.id.goog`) | `string` | `"enabled"` | no |
| impersonate\_service\_account | An optional service account to impersonate for gcloud commands. If this service account is not specified, the module will use Application Default Credentials. | `string` | `""` | no |
| ip\_masq\_link\_local | Whether to masquerade traffic to the link-local prefix (169.254.0.0/16). | `bool` | `false` | no |
| ip\_masq\_resync\_interval | The interval at which the agent attempts to sync its ConfigMap file from the disk. | `string` | `"60s"` | no |
| ip\_range\_pods | The _name_ of the secondary subnet ip range to use for pods | `string` | n/a | yes |
Expand Down
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