gke-cluster-autopilot: add logging configuration (#1625)

Although one cannot disable Cloud Logging and Cloud Monitoring integration in GKE Autopilot clusters, one has some flexibility over which control plane components' logs should be ingested. This commit adds a new variable and a block to the cluster resource to facilitate that.

* gke-cluster-autopilot: update logging configuration and add an example to module README
This commit is contained in:
Oliver Frolovs 2023-08-31 12:06:57 +01:00 committed by GitHub
parent 9fa30b5e9c
commit 80e85ad343
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5 changed files with 91 additions and 22 deletions

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@ -35,7 +35,6 @@ module "cluster-1" {
# tftest modules=1 resources=1 inventory=basic.yaml
```
### Cloud DNS
This example shows how to [use Cloud DNS as a Kubernetes DNS provider](https://cloud.google.com/kubernetes-engine/docs/how-to/cloud-dns) for GKE Standard clusters.
@ -62,6 +61,31 @@ module "cluster-1" {
# tftest modules=1 resources=1 inventory=dns.yaml
```
### Logging configuration
This example shows how to [collect logs for the Kubernetes control plane components](https://cloud.google.com/stackdriver/docs/solutions/gke/installing). The logs for these components are not collected by default.
> **Note**
> System and workload logs collection is pre-configured for Autopilot clusters and cannot be disabled.
```hcl
module "cluster-1" {
source = "./fabric/modules/gke-cluster-autopilot"
project_id = var.project_id
name = "cluster-1"
location = "europe-west1"
vpc_config = {
network = var.vpc.self_link
subnetwork = var.subnet.self_link
}
logging_config = {
enable_api_server_logs = true
enable_scheduler_logs = true
enable_controller_manager_logs = true
}
}
# tftest modules=1 resources=1 inventory=logging-config.yaml
```
### Backup for GKE
@ -95,23 +119,24 @@ module "cluster-1" {
| name | description | type | required | default |
|---|---|:---:|:---:|:---:|
| [location](variables.tf#L112) | Autopilot cluster are always regional. | <code>string</code> | ✓ | |
| [name](variables.tf#L147) | Cluster name. | <code>string</code> | ✓ | |
| [project_id](variables.tf#L173) | Cluster project id. | <code>string</code> | ✓ | |
| [vpc_config](variables.tf#L196) | VPC-level configuration. | <code title="object&#40;&#123;&#10; network &#61; string&#10; subnetwork &#61; string&#10; master_ipv4_cidr_block &#61; optional&#40;string&#41;&#10; secondary_range_blocks &#61; optional&#40;object&#40;&#123;&#10; pods &#61; string&#10; services &#61; string&#10; &#125;&#41;&#41;&#10; secondary_range_names &#61; optional&#40;object&#40;&#123;&#10; pods &#61; string&#10; services &#61; string&#10; &#125;&#41;, &#123; pods &#61; &#34;pods&#34;, services &#61; &#34;services&#34; &#125;&#41;&#10; master_authorized_ranges &#61; optional&#40;map&#40;string&#41;&#41;&#10; stack_type &#61; optional&#40;string&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | ✓ | |
| [location](variables.tf#L110) | Autopilot cluster are always regional. | <code>string</code> | ✓ | |
| [name](variables.tf#L155) | Cluster name. | <code>string</code> | ✓ | |
| [project_id](variables.tf#L181) | Cluster project id. | <code>string</code> | ✓ | |
| [vpc_config](variables.tf#L204) | VPC-level configuration. | <code title="object&#40;&#123;&#10; network &#61; string&#10; subnetwork &#61; string&#10; master_ipv4_cidr_block &#61; optional&#40;string&#41;&#10; secondary_range_blocks &#61; optional&#40;object&#40;&#123;&#10; pods &#61; string&#10; services &#61; string&#10; &#125;&#41;&#41;&#10; secondary_range_names &#61; optional&#40;object&#40;&#123;&#10; pods &#61; string&#10; services &#61; string&#10; &#125;&#41;, &#123; pods &#61; &#34;pods&#34;, services &#61; &#34;services&#34; &#125;&#41;&#10; master_authorized_ranges &#61; optional&#40;map&#40;string&#41;&#41;&#10; stack_type &#61; optional&#40;string&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | ✓ | |
| [backup_configs](variables.tf#L17) | Configuration for Backup for GKE. | <code title="object&#40;&#123;&#10; enable_backup_agent &#61; optional&#40;bool, false&#41;&#10; backup_plans &#61; optional&#40;map&#40;object&#40;&#123;&#10; encryption_key &#61; optional&#40;string&#41;&#10; include_secrets &#61; optional&#40;bool, true&#41;&#10; include_volume_data &#61; optional&#40;bool, true&#41;&#10; namespaces &#61; optional&#40;list&#40;string&#41;&#41;&#10; region &#61; string&#10; schedule &#61; string&#10; retention_policy_days &#61; optional&#40;string&#41;&#10; retention_policy_lock &#61; optional&#40;bool, false&#41;&#10; retention_policy_delete_lock_days &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;, &#123;&#125;&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>&#123;&#125;</code> |
| [description](variables.tf#L37) | Cluster description. | <code>string</code> | | <code>null</code> |
| [enable_addons](variables.tf#L43) | Addons enabled in the cluster (true means enabled). | <code title="object&#40;&#123;&#10; cloudrun &#61; optional&#40;bool, false&#41;&#10; config_connector &#61; optional&#40;bool, false&#41;&#10; dns_cache &#61; optional&#40;bool, false&#41;&#10; horizontal_pod_autoscaling &#61; optional&#40;bool, false&#41;&#10; http_load_balancing &#61; optional&#40;bool, false&#41;&#10; istio &#61; optional&#40;object&#40;&#123;&#10; enable_tls &#61; bool&#10; &#125;&#41;&#41;&#10; kalm &#61; optional&#40;bool, false&#41;&#10; network_policy &#61; optional&#40;bool, false&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code title="&#123;&#10; horizontal_pod_autoscaling &#61; true&#10; http_load_balancing &#61; true&#10;&#125;">&#123;&#8230;&#125;</code> |
| [enable_features](variables.tf#L64) | Enable cluster-level features. Certain features allow configuration. | <code title="object&#40;&#123;&#10; binary_authorization &#61; optional&#40;bool, false&#41;&#10; cost_management &#61; optional&#40;bool, false&#41;&#10; dns &#61; optional&#40;object&#40;&#123;&#10; provider &#61; optional&#40;string&#41;&#10; scope &#61; optional&#40;string&#41;&#10; domain &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10; database_encryption &#61; optional&#40;object&#40;&#123;&#10; state &#61; string&#10; key_name &#61; string&#10; &#125;&#41;&#41;&#10; gateway_api &#61; optional&#40;bool, false&#41;&#10; groups_for_rbac &#61; optional&#40;string&#41;&#10; l4_ilb_subsetting &#61; optional&#40;bool, false&#41;&#10; mesh_certificates &#61; optional&#40;bool&#41;&#10; pod_security_policy &#61; optional&#40;bool, false&#41;&#10; allow_net_admin &#61; optional&#40;bool, false&#41;&#10; resource_usage_export &#61; optional&#40;object&#40;&#123;&#10; dataset &#61; string&#10; enable_network_egress_metering &#61; optional&#40;bool&#41;&#10; enable_resource_consumption_metering &#61; optional&#40;bool&#41;&#10; &#125;&#41;&#41;&#10; tpu &#61; optional&#40;bool, false&#41;&#10; upgrade_notifications &#61; optional&#40;object&#40;&#123;&#10; topic_id &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10; vertical_pod_autoscaling &#61; optional&#40;bool, false&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code title="&#123;&#10;&#10;&#10;&#125;">&#123;&#8230;&#125;</code> |
| [issue_client_certificate](variables.tf#L100) | Enable issuing client certificate. | <code>bool</code> | | <code>false</code> |
| [labels](variables.tf#L106) | Cluster resource labels. | <code>map&#40;string&#41;</code> | | <code>null</code> |
| [maintenance_config](variables.tf#L118) | Maintenance window configuration. | <code title="object&#40;&#123;&#10; daily_window_start_time &#61; optional&#40;string&#41;&#10; recurring_window &#61; optional&#40;object&#40;&#123;&#10; start_time &#61; string&#10; end_time &#61; string&#10; recurrence &#61; string&#10; &#125;&#41;&#41;&#10; maintenance_exclusions &#61; optional&#40;list&#40;object&#40;&#123;&#10; name &#61; string&#10; start_time &#61; string&#10; end_time &#61; string&#10; scope &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code title="&#123;&#10; daily_window_start_time &#61; &#34;03:00&#34;&#10; recurring_window &#61; null&#10; maintenance_exclusion &#61; &#91;&#93;&#10;&#125;">&#123;&#8230;&#125;</code> |
| [min_master_version](variables.tf#L141) | Minimum version of the master, defaults to the version of the most recent official release. | <code>string</code> | | <code>null</code> |
| [node_locations](variables.tf#L152) | Zones in which the cluster's nodes are located. | <code>list&#40;string&#41;</code> | | <code>&#91;&#93;</code> |
| [private_cluster_config](variables.tf#L159) | Private cluster configuration. | <code title="object&#40;&#123;&#10; enable_private_endpoint &#61; optional&#40;bool&#41;&#10; master_global_access &#61; optional&#40;bool&#41;&#10; peering_config &#61; optional&#40;object&#40;&#123;&#10; export_routes &#61; optional&#40;bool&#41;&#10; import_routes &#61; optional&#40;bool&#41;&#10; project_id &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>null</code> |
| [release_channel](variables.tf#L178) | Release channel for GKE upgrades. | <code>string</code> | | <code>null</code> |
| [service_account](variables.tf#L184) | The Google Cloud Platform Service Account to be used by the node VMs created by GKE Autopilot. | <code>string</code> | | <code>null</code> |
| [tags](variables.tf#L190) | Network tags applied to nodes. | <code>list&#40;string&#41;</code> | | <code>null</code> |
| [enable_features](variables.tf#L64) | Enable cluster-level features. Certain features allow configuration. | <code title="object&#40;&#123;&#10; binary_authorization &#61; optional&#40;bool, false&#41;&#10; cost_management &#61; optional&#40;bool, false&#41;&#10; dns &#61; optional&#40;object&#40;&#123;&#10; provider &#61; optional&#40;string&#41;&#10; scope &#61; optional&#40;string&#41;&#10; domain &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10; database_encryption &#61; optional&#40;object&#40;&#123;&#10; state &#61; string&#10; key_name &#61; string&#10; &#125;&#41;&#41;&#10; gateway_api &#61; optional&#40;bool, false&#41;&#10; groups_for_rbac &#61; optional&#40;string&#41;&#10; l4_ilb_subsetting &#61; optional&#40;bool, false&#41;&#10; mesh_certificates &#61; optional&#40;bool&#41;&#10; pod_security_policy &#61; optional&#40;bool, false&#41;&#10; allow_net_admin &#61; optional&#40;bool, false&#41;&#10; resource_usage_export &#61; optional&#40;object&#40;&#123;&#10; dataset &#61; string&#10; enable_network_egress_metering &#61; optional&#40;bool&#41;&#10; enable_resource_consumption_metering &#61; optional&#40;bool&#41;&#10; &#125;&#41;&#41;&#10; tpu &#61; optional&#40;bool, false&#41;&#10; upgrade_notifications &#61; optional&#40;object&#40;&#123;&#10; topic_id &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10; vertical_pod_autoscaling &#61; optional&#40;bool, false&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>&#123;&#125;</code> |
| [issue_client_certificate](variables.tf#L98) | Enable issuing client certificate. | <code>bool</code> | | <code>false</code> |
| [labels](variables.tf#L104) | Cluster resource labels. | <code>map&#40;string&#41;</code> | | <code>null</code> |
| [logging_config](variables.tf#L115) | Logging configuration. | <code title="object&#40;&#123;&#10; enable_api_server_logs &#61; optional&#40;bool, false&#41;&#10; enable_scheduler_logs &#61; optional&#40;bool, false&#41;&#10; enable_controller_manager_logs &#61; optional&#40;bool, false&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>&#123;&#125;</code> |
| [maintenance_config](variables.tf#L126) | Maintenance window configuration. | <code title="object&#40;&#123;&#10; daily_window_start_time &#61; optional&#40;string&#41;&#10; recurring_window &#61; optional&#40;object&#40;&#123;&#10; start_time &#61; string&#10; end_time &#61; string&#10; recurrence &#61; string&#10; &#125;&#41;&#41;&#10; maintenance_exclusions &#61; optional&#40;list&#40;object&#40;&#123;&#10; name &#61; string&#10; start_time &#61; string&#10; end_time &#61; string&#10; scope &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code title="&#123;&#10; daily_window_start_time &#61; &#34;03:00&#34;&#10; recurring_window &#61; null&#10; maintenance_exclusion &#61; &#91;&#93;&#10;&#125;">&#123;&#8230;&#125;</code> |
| [min_master_version](variables.tf#L149) | Minimum version of the master, defaults to the version of the most recent official release. | <code>string</code> | | <code>null</code> |
| [node_locations](variables.tf#L160) | Zones in which the cluster's nodes are located. | <code>list&#40;string&#41;</code> | | <code>&#91;&#93;</code> |
| [private_cluster_config](variables.tf#L167) | Private cluster configuration. | <code title="object&#40;&#123;&#10; enable_private_endpoint &#61; optional&#40;bool&#41;&#10; master_global_access &#61; optional&#40;bool&#41;&#10; peering_config &#61; optional&#40;object&#40;&#123;&#10; export_routes &#61; optional&#40;bool&#41;&#10; import_routes &#61; optional&#40;bool&#41;&#10; project_id &#61; optional&#40;string&#41;&#10; &#125;&#41;&#41;&#10;&#125;&#41;">object&#40;&#123;&#8230;&#125;&#41;</code> | | <code>null</code> |
| [release_channel](variables.tf#L186) | Release channel for GKE upgrades. | <code>string</code> | | <code>null</code> |
| [service_account](variables.tf#L192) | The Google Cloud Platform Service Account to be used by the node VMs created by GKE Autopilot. | <code>string</code> | | <code>null</code> |
| [tags](variables.tf#L198) | Network tags applied to nodes. | <code>list&#40;string&#41;</code> | | <code>null</code> |
## Outputs
@ -120,11 +145,11 @@ module "cluster-1" {
| [ca_certificate](outputs.tf#L17) | Public certificate of the cluster (base64-encoded). | ✓ |
| [cluster](outputs.tf#L23) | Cluster resource. | ✓ |
| [endpoint](outputs.tf#L29) | Cluster endpoint. | |
| [id](outputs.tf#L34) | FUlly qualified cluster id. | |
| [id](outputs.tf#L34) | Fully qualified cluster id. | |
| [location](outputs.tf#L39) | Cluster location. | |
| [master_version](outputs.tf#L44) | Master version. | |
| [name](outputs.tf#L49) | Cluster name. | |
| [notifications](outputs.tf#L54) | GKE PubSub notifications topic. | |
| [notifications](outputs.tf#L54) | GKE Pub/Sub notifications topic. | |
| [self_link](outputs.tf#L59) | Cluster self link. | ✓ |
| [workload_identity_pool](outputs.tf#L65) | Workload identity pool. | |
<!-- END TFDOC -->

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@ -121,6 +121,16 @@ resource "google_container_cluster" "cluster" {
}
}
logging_config {
enable_components = toset(compact([
var.logging_config.enable_api_server_logs ? "APISERVER" : null,
var.logging_config.enable_controller_manager_logs ? "CONTROLLER_MANAGER" : null,
var.logging_config.enable_scheduler_logs ? "SCHEDULER" : null,
"SYSTEM_COMPONENTS",
"WORKLOADS",
]))
}
dynamic "gateway_api_config" {
for_each = var.enable_features.gateway_api ? [""] : []
content {

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@ -32,7 +32,7 @@ output "endpoint" {
}
output "id" {
description = "FUlly qualified cluster id."
description = "Fully qualified cluster id."
value = google_container_cluster.cluster.id
}
@ -52,7 +52,7 @@ output "name" {
}
output "notifications" {
description = "GKE PubSub notifications topic."
description = "GKE Pub/Sub notifications topic."
value = try(google_pubsub_topic.notifications[0].id, null)
}

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@ -92,9 +92,7 @@ variable "enable_features" {
}))
vertical_pod_autoscaling = optional(bool, false)
})
default = {
}
default = {}
}
variable "issue_client_certificate" {
@ -114,6 +112,16 @@ variable "location" {
type = string
}
variable "logging_config" {
description = "Logging configuration."
type = object({
enable_api_server_logs = optional(bool, false)
enable_scheduler_logs = optional(bool, false)
enable_controller_manager_logs = optional(bool, false)
})
default = {}
nullable = false
}
variable "maintenance_config" {
description = "Maintenance window configuration."

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@ -0,0 +1,26 @@
# Copyright 2023 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
values:
module.cluster-1.google_container_cluster.cluster:
logging_config:
- enable_components:
- APISERVER
- CONTROLLER_MANAGER
- SCHEDULER
- SYSTEM_COMPONENTS
- WORKLOADS
counts:
google_container_cluster: 1