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323 lines
12 KiB
Markdown
323 lines
12 KiB
Markdown
---
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layout: "google"
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page_title: "Google: google_container_cluster"
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sidebar_current: "docs-google-container-cluster"
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description: |-
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Creates a Google Kubernetes Engine (GKE) cluster.
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---
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# google\_container\_cluster
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Creates a Google Kubernetes Engine (GKE) cluster. For more information see
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[the official documentation](https://cloud.google.com/container-engine/docs/clusters)
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and
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[API](https://cloud.google.com/container-engine/reference/rest/v1/projects.zones.clusters).
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~> **Note:** All arguments including the username and password will be stored in the raw state as plain-text.
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[Read more about sensitive data in state](/docs/state/sensitive-data.html).
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## Example usage
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```hcl
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resource "google_container_cluster" "primary" {
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name = "marcellus-wallace"
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zone = "us-central1-a"
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initial_node_count = 3
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additional_zones = [
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"us-central1-b",
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"us-central1-c",
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]
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master_auth {
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username = "mr.yoda"
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password = "adoy.rm"
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}
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node_config {
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oauth_scopes = [
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"https://www.googleapis.com/auth/compute",
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"https://www.googleapis.com/auth/devstorage.read_only",
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"https://www.googleapis.com/auth/logging.write",
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"https://www.googleapis.com/auth/monitoring",
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]
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labels {
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foo = "bar"
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}
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tags = ["foo", "bar"]
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}
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}
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# The following outputs allow authentication and connectivity to the GKE Cluster.
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output "client_certificate" {
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value = "${google_container_cluster.primary.master_auth.0.client_certificate}"
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}
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output "client_key" {
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value = "${google_container_cluster.primary.master_auth.0.client_key}"
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}
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output "cluster_ca_certificate" {
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value = "${google_container_cluster.primary.master_auth.0.cluster_ca_certificate}"
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}
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```
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## Argument Reference
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* `name` - (Required) The name of the cluster, unique within the project and
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zone.
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* `zone` - (Required) The zone that the master and the number of nodes specified
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in `initial_node_count` should be created in.
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- - -
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* `additional_zones` - (Optional) The list of additional Google Compute Engine
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locations in which the cluster's nodes should be located. If additional zones are
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configured, the number of nodes specified in `initial_node_count` is created in
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all specified zones.
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* `addons_config` - (Optional) The configuration for addons supported by GKE.
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Structure is documented below.
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* `cluster_ipv4_cidr` - (Optional) The IP address range of the kubernetes pods in
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this cluster. Default is an automatically assigned CIDR.
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* `description` - (Optional) Description of the cluster.
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* `enable_kubernetes_alpha` - (Optional) Whether to enable Kubernetes Alpha features for
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this cluster. Note that when this option is enabled, the cluster cannot be upgraded
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and will be automatically deleted after 30 days.
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* `enable_legacy_abac` - (Optional) Whether the ABAC authorizer is enabled for this cluster.
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When enabled, identities in the system, including service accounts, nodes, and controllers,
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will have statically granted permissions beyond those provided by the RBAC configuration or IAM.
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* `initial_node_count` - (Optional) The number of nodes to create in this
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cluster (not including the Kubernetes master). Must be set if `node_pool` is not set.
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* `ip_allocation_policy` - (Optional) Configuration for cluster IP allocation. As of now, only pre-allocated subnetworks (custom type with secondary ranges) are supported.
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* `logging_service` - (Optional) The logging service that the cluster should
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write logs to. Available options include `logging.googleapis.com` and
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`none`. Defaults to `logging.googleapis.com`
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* `maintenance_policy` - (Optional) The maintenance policy to use for the cluster. Structure is
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documented below.
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* `master_auth` - (Optional) The authentication information for accessing the
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Kubernetes master. Structure is documented below.
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* `master_authorized_networks_config` - (Optional) The desired configuration options
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for master authorized networks. Omit the nested `cidr_blocks` attribute to disallow
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external access (except the cluster node IPs, which GKE automatically whitelists).
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* `min_master_version` - (Optional) The minimum version of the master. GKE
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will auto-update the master to new versions, so this does not guarantee the
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current master version--use the read-only `master_version` field to obtain that.
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If unset, the cluster's version will be set by GKE to the version of the most recent
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official release (which is not necessarily the latest version).
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* `monitoring_service` - (Optional) The monitoring service that the cluster
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should write metrics to. Available options include
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`monitoring.googleapis.com` and `none`. Defaults to
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`monitoring.googleapis.com`
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* `network` - (Optional) The name or self_link of the Google Compute Engine
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network to which the cluster is connected.
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* `network_policy` - (Optional) Configuration options for the
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[NetworkPolicy](https://kubernetes.io/docs/concepts/services-networking/networkpolicies/)
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feature. Structure is documented below.
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* `node_config` - (Optional) Parameters used in creating the cluster's nodes.
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Structure is documented below.
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* `node_pool` - (Optional) List of node pools associated with this cluster.
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See [google_container_node_pool](container_node_pool.html) for schema.
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* `node_version` - (Optional) The Kubernetes version on the nodes. Must either be unset
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or set to the same value as `min_master_version` on create. Defaults to the default
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version set by GKE which is not necessarily the latest version.
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* `project` - (Optional) The project in which the resource belongs. If it
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is not provided, the provider project is used.
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* `subnetwork` - (Optional) The name of the Google Compute Engine subnetwork in
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which the cluster's instances are launched.
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The `addons_config` block supports:
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* `horizontal_pod_autoscaling` - (Optional) The status of the Horizontal Pod Autoscaling
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addon, which increases or decreases the number of replica pods a replication controller
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has based on the resource usage of the existing pods. It is enabled by default;
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set `disabled = true` to disable.
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* `http_load_balancing` - (Optional) The status of the HTTP (L7) load balancing
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controller addon, which makes it easy to set up HTTP load balancers for services in a
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cluster. It is enabled by default; set `disabled = true` to disable.
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* `kubernetes_dashboard` - (Optional) The status of the Kubernetes Dashboard
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add-on, which controls whether the Kubernetes Dashboard is enabled for this cluster.
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It is enabled by default; set `disabled = true` to disable.
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This example `addons_config` disables two addons:
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```
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addons_config {
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http_load_balancing {
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disabled = true
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}
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horizontal_pod_autoscaling {
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disabled = true
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}
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}
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```
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The `maintenance_policy` block supports:
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* `daily_maintenance_window` - (Required) Time window specified for daily maintenance operations.
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Specify `start_time` in [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) format "HH:MM”,
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where HH : \[00-23\] and MM : \[00-59\] GMT. For example:
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```
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maintenance_policy {
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daily_maintenance_window {
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start_time = "03:00"
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}
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}
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```
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The `ip_allocation_policy` block supports:
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* `cluster_secondary_range_name` - (Optional) The name of the secondary range to be
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used as for the cluster CIDR block. The secondary range will be used for pod IP
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addresses. This must be an existing secondary range associated with the cluster
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subnetwork.
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* `services_secondary_range_name` - (Optional) The name of the secondary range to be
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used as for the services CIDR block. The secondary range will be used for service
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ClusterIPs. This must be an existing secondary range associated with the cluster
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subnetwork.
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The `master_auth` block supports:
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* `password` - (Required) The password to use for HTTP basic authentication when accessing
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the Kubernetes master endpoint
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* `username` - (Required) The username to use for HTTP basic authentication when accessing
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the Kubernetes master endpoint
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If this block is provided and both `username` and `password` are empty, basic authentication will be disabled.
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The `master_authorized_networks_config` block supports:
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* `cidr_blocks` - (Optional) Defines up to 10 external networks that can access
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Kubernetes master through HTTPS.
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The `master_authorized_networks_config.cidr_blocks` block supports:
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* `cidr_block` - (Optional) External network that can access Kubernetes master through HTTPS.
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Must be specified in CIDR notation.
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* `display_name` - (Optional) Field for users to identify CIDR blocks.
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The `network_policy` block supports:
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* `provider` - (Optional) The selected network policy provider. Defaults to PROVIDER_UNSPECIFIED.
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* `enabled` - (Optional) Whether network policy is enabled on the cluster. Defaults to false.
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The `node_config` block supports:
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* `disk_size_gb` - (Optional) Size of the disk attached to each node, specified
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in GB. The smallest allowed disk size is 10GB. Defaults to 100GB.
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* `image_type` - (Optional) The image type to use for this node.
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* `labels` - (Optional) The Kubernetes labels (key/value pairs) to be applied to each node.
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* `local_ssd_count` - (Optional) The amount of local SSD disks that will be
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attached to each cluster node. Defaults to 0.
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* `machine_type` - (Optional) The name of a Google Compute Engine machine type.
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Defaults to `n1-standard-1`.
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* `metadata` - (Optional) The metadata key/value pairs assigned to instances in
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the cluster.
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* `min_cpu_platform` - (Optional) Minimum CPU platform to be used by this instance.
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The instance may be scheduled on the specified or newer CPU platform. Applicable
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values are the friendly names of CPU platforms, such as `Intel Haswell`. See the
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[official documentation](https://cloud.google.com/compute/docs/instances/specify-min-cpu-platform)
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for more information.
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* `oauth_scopes` - (Optional) The set of Google API scopes to be made available
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on all of the node VMs under the "default" service account. These can be
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either FQDNs, or scope aliases. The following scopes are necessary to ensure
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the correct functioning of the cluster:
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* `compute-rw` (`https://www.googleapis.com/auth/compute`)
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* `storage-ro` (`https://www.googleapis.com/auth/devstorage.read_only`)
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* `logging-write` (`https://www.googleapis.com/auth/logging.write`),
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if `logging_service` points to Google
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* `monitoring` (`https://www.googleapis.com/auth/monitoring`),
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if `monitoring_service` points to Google
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* `preemptible` - (Optional) A boolean that represents whether or not the underlying node VMs
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are preemptible. See the [official documentation](https://cloud.google.com/container-engine/docs/preemptible-vm)
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for more information. Defaults to false.
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* `service_account` - (Optional) The service account to be used by the Node VMs.
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If not specified, the "default" service account is used.
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* `tags` - (Optional) The list of instance tags applied to all nodes. Tags are used to identify
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valid sources or targets for network firewalls.
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## Attributes Reference
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In addition to the arguments listed above, the following computed attributes are
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exported:
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* `endpoint` - The IP address of this cluster's Kubernetes master.
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* `instance_group_urls` - List of instance group URLs which have been assigned
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to the cluster.
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* `maintenance_policy.0.daily_maintenance_window.0.duration` - Duration of the time window, automatically chosen to be
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smallest possible in the given scenario.
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Duration will be in [RFC3339](https://www.ietf.org/rfc/rfc3339.txt) format "PTnHnMnS".
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* `master_auth.0.client_certificate` - Base64 encoded public certificate
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used by clients to authenticate to the cluster endpoint.
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* `master_auth.0.client_key` - Base64 encoded private key used by clients
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to authenticate to the cluster endpoint.
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* `master_auth.0.cluster_ca_certificate` - Base64 encoded public certificate
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that is the root of trust for the cluster.
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* `master_version` - The current version of the master in the cluster. This may
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be different than the `min_master_version` set in the config if the master
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has been updated by GKE.
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<a id="timeouts"></a>
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## Timeouts
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`google_container_cluster` provides the following
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[Timeouts](/docs/configuration/resources.html#timeouts) configuration options:
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- `create` - (Default `30 minutes`) Used for clusters
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- `update` - (Default `10 minutes`) Used for updates to clusters
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- `delete` - (Default `10 minutes`) Used for destroying clusters.
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## Import
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GKE clusters can be imported using the `zone`, and `name`, e.g.
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```
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$ terraform import google_container_cluster.mycluster us-east1-a/my-cluster
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```
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