Spot Ocean EKS Terraform Module

A Terraform module to create an Amazon Elastic Kubernetes Service (EKS) cluster with Spot Ocean. The module will install the Ocean Controller into the cluster.

Table of Contents

• Prerequisites
• Usage
• Examples
• Requirements
• Providers
• Modules
• Resources
• Inputs
• Outputs
• Documentation
• Getting Help
• Community
• Contributing
• License

Prerequisites

For kubectl to connect and interface properly with your Amazon Elastic Kubernetes Service (EKS) cluster, you have to install and configure the AWS Command Line Interface (CLI) with the aws-iam-authenticator component. Instructions on how to install the following components can be found below:

• aws-cli
• aws-iam-authenticator
• kubectl

Usage

module "ocean-eks" {
  source = "spotinst/ocean-eks/spotinst"

  # Credentials.
  spotinst_token   = var.spotinst_token
  spotinst_account = var.spotinst_account
}

Examples

• Simple Cluster
• Update Policy

Requirements

Name	Version
terraform	>= 0.13.1
aws	~> 3.37
kubernetes	~> 2.0
random	~> 3.1
spotinst	~> 1.60

Providers

Name	Version
aws	3.62.0
random	3.1.0
spotinst	1.60.0

Modules

Name	Source	Version
eks	terraform-aws-modules/eks/aws	~> 17.0
ocean-controller	spotinst/ocean-controller/spotinst	~> 0.35
vpc	terraform-aws-modules/vpc/aws	>= 2.78.0

Resources

Name	Type
random_string.suffix	resource
spotinst_ocean_aws.this	resource
aws_availability_zones.available	data source
aws_eks_cluster.cluster	data source
aws_eks_cluster_auth.cluster	data source
aws_region.current	data source

Inputs

Name	Description	Type	Default	Required
ami_id	The image ID for the EKS worker nodes. If none is provided, Terraform will search for the latest version of their EKS optimized worker AMI based on platform	string	null	no
associate_public_ip_address	Associate a public IP address to worker nodes	bool	false	no
attach_worker_cni_policy	Whether to attach the Amazon managed AmazonEKS_CNI_Policy IAM policy to the default worker IAM role. WARNING: If set false the permissions must be assigned to the aws-node DaemonSet pods via another method or nodes will not be able to join the cluster	bool	true	no
autoscaler_cooldown	Sets cooldown period between scaling actions	number	null	no
autoscaler_headroom_cpu_per_unit	Configures the number of CPUs to allocate the headroom (CPUs are denoted in millicores, where 1000 millicores = 1 vCPU)	number	null	no
autoscaler_headroom_gpu_per_unit	Configures the number of GPUs to allocate the headroom	number	null	no
autoscaler_headroom_memory_per_unit	Configures the amount of memory (MB) to allocate the headroom	number	null	no
autoscaler_headroom_num_of_units	Sets the number of units to retain as headroom, where each unit has the defined headroom CPU and memory	number	null	no
autoscaler_headroom_percentage	Sets the auto headroom percentage (a number in the range [0, 200]) which controls the percentage of headroom from the cluster. Relevant only when autoscale_is_auto_config toggled on	number	null	no
autoscaler_is_auto_config	Controls whether Ocean Auto Scaler should be auto configured	bool	true	no
autoscaler_is_enabled	Controls whether Ocean Auto Scaler should be enabled	bool	true	no
autoscaler_max_scale_down_percentage	Sets the maximum percentage (a number in the range [1, 100]) to scale down	number	null	no
autoscaler_resource_limits_max_memory_gib	Sets the maximum memory in GiB units that can be allocated to the cluster	number	null	no
autoscaler_resource_limits_max_vcpu	Sets the maximum cpu in vCPU units that can be allocated to the cluster	number	null	no
aws_auth_additional_labels	Additional kubernetes labels applied on aws-auth ConfigMap	map(string)	{}	no
blacklist	List of instance types not allowed in the Ocean cluster (whitelist and blacklist are mutually exclusive)	list(string)	null	no
cidr	The CIDR block for the VPC	string	"10.0.0.0/16"	no
cluster_create_endpoint_private_access_sg_rule	Whether to create security group rules for the access to the Amazon EKS private API server endpoint	bool	false	no
cluster_create_security_group	Whether to create a security group for the cluster or attach the cluster to cluster_security_group_id	bool	true	no
cluster_create_timeout	Timeout value when creating the EKS cluster	string	"30m"	no
cluster_delete_timeout	Timeout value when deleting the EKS cluster	string	"15m"	no
cluster_enabled_log_types	A list of the desired control plane logging to enable. For more information, see Amazon EKS Control Plane Logging documentation (https://docs.aws.amazon.com/eks/latest/userguide/control-plane-logs.html)	list(string)	[]	no
cluster_encryption_config	Configuration block with encryption configuration for the cluster. See examples/secrets_encryption/main.tf for example format	list(object({ provider_key_arn = string resources = list(string) }))	[]	no
cluster_endpoint_private_access	Indicates whether or not the Amazon EKS private API server endpoint is enabled	bool	false	no
cluster_endpoint_private_access_cidrs	List of CIDR blocks which can access the Amazon EKS private API server endpoint	list(string)	null	no
cluster_endpoint_public_access	Indicates whether or not the Amazon EKS public API server endpoint is enabled	bool	true	no
cluster_endpoint_public_access_cidrs	List of CIDR blocks which can access the Amazon EKS public API server endpoint	list(string)	[ "0.0.0.0/0" ]	no
cluster_iam_role_name	IAM role name for the cluster. Only applicable if manage_cluster_iam_resources is set to false	string	""	no
cluster_identifier	Cluster identifier	string	null	no
cluster_log_kms_key_id	If a KMS Key ARN is set, this key will be used to encrypt the corresponding log group. Please be sure that the KMS Key has an appropriate key policy (https://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/encrypt-log-data-kms.html)	string	""	no
cluster_log_retention_in_days	Number of days to retain log events. Default retention - 90 days	number	90	no
cluster_name	Name of the EKS cluster. Also used as a prefix in names of related resources	string	null	no
cluster_security_group_id	If provided, the EKS cluster will be attached to this security group. If not given, a security group will be created with necessary ingress/egress to work with the workers	string	""	no
cluster_version	Kubernetes version to use for the EKS cluster	string	"1.18"	no
controller_disable_auto_update	Controls whether the auto-update feature should be disabled for the Ocean Controller	bool	false	no
controller_image	Set the Docker image name for the Ocean Controller that should be deployed	string	"gcr.io/spotinst-artifacts/kubernetes-cluster-controller"	no
controller_node_selector	Specifies the node selector which must match a node's labels for the Ocean Controller resources to be scheduled on that node	map(string)	null	no
create_eks	Controls whether EKS resources should be created (it affects almost all resources)	bool	true	no
create_fargate_pod_execution_role	Controls whether the EKS Fargate pod execution IAM role should be created	bool	true	no
create_ocean	Controls whether Ocean should be created (it affects all Ocean resources)	bool	true	no
desired_capacity	The number of worker nodes to launch and maintain in the Ocean cluster	number	1	no
eks_oidc_root_ca_thumbprint	Thumbprint of Root CA for EKS OIDC, Valid until 2037	string	"9e99a48a9960b14926bb7f3b02e22da2b0ab7280"	no
enable_irsa	Whether to create OpenID Connect Provider for EKS to enable IRSA	bool	false	no
enable_nat_gateway	Should be true if you want to provision NAT Gateways for each of your private networks	bool	true	no
external_nat_ip_ids	List of EIP IDs to be assigned to the NAT Gateways (used in combination with reuse_nat_ips)	list(string)	[]	no
fargate_pod_execution_role_name	The IAM Role that provides permissions for the EKS Fargate Profile	string	null	no
fargate_profiles	Fargate profiles to create. See fargate_profile keys section in fargate submodule's README.md for more details	any	{}	no
iam_path	If provided, all IAM roles will be created on this path	string	"/"	no
image_pull_policy	Image pull policy (one of: Always, Never, IfNotPresent)	string	"Always"	no
key_name	The key pair to attach to the worker nodes launched by Ocean	string	null	no
kubeconfig_aws_authenticator_additional_args	Any additional arguments to pass to the authenticator such as the role to assume. e.g. ["-r", "MyEksRole"]	list(string)	[]	no
kubeconfig_aws_authenticator_command	Command to use to fetch AWS EKS credentials	string	"aws-iam-authenticator"	no
kubeconfig_aws_authenticator_command_args	Default arguments passed to the authenticator command. Defaults to [token -i $cluster_name]	list(string)	[]	no
kubeconfig_aws_authenticator_env_variables	Environment variables that should be used when executing the authenticator. e.g. { AWS_PROFILE = "eks"}	map(string)	{}	no
kubeconfig_file_permission	File permission of the Kubectl config file containing cluster configuration saved to kubeconfig_output_path.	string	"0600"	no
kubeconfig_name	Override the default name used for items kubeconfig	string	""	no
kubeconfig_output_path	Where to save the Kubectl config file (if write_kubeconfig = true). Assumed to be a directory if the value ends with a forward slash /	string	"./"	no
manage_aws_auth	Whether to apply the aws-auth configmap file	bool	true	no
manage_cluster_iam_resources	Whether to let the module manage cluster IAM resources. If set to false, cluster_iam_role_name must be specified	bool	true	no
manage_worker_iam_resources	Whether to let the module manage worker IAM resources. If set to false, iam_instance_profile_name must be specified for workers	bool	true	no
map_accounts	Additional AWS account numbers to add to the aws-auth configmap. See examples/basic/variables.tf for example format	list(string)	[]	no
map_roles	Additional IAM roles to add to the aws-auth configmap. See examples/basic/variables.tf for example format	list(object({ rolearn = string username = string groups = list(string) }))	[]	no
map_users	Additional IAM users to add to the aws-auth configmap. See examples/basic/variables.tf for example format	list(object({ userarn = string username = string groups = list(string) }))	[]	no
max_size	The upper limit of worker nodes the Ocean cluster can scale up to	number	null	no
min_size	The lower limit of worker nodes the Ocean cluster can scale down to	number	null	no
node_groups	Map of map of node groups to create. See node_groups module's documentation for more details	any	{}	no
node_groups_defaults	Map of values to be applied to all node groups. See node_groups module's documentation for more details	any	{}	no
one_nat_gateway_per_az	Should be true if you want only one NAT Gateway per availability zone	bool	false	no
permissions_boundary	If provided, all IAM roles will be created with this permissions boundary attached	string	null	no
private_subnets	A list of private subnets inside the VPC	list(string)	[ "10.0.1.0/24", "10.0.2.0/24", "10.0.3.0/24" ]	no
public_subnets	A list of public subnets inside the VPC	list(string)	[ "10.0.4.0/24", "10.0.5.0/24", "10.0.6.0/24" ]	no
reuse_nat_ips	Should be true if you don't want EIPs to be created for your NAT Gateways and will instead pass them in via the 'external_nat_ip_ids' variable	bool	false	no
root_volume_size	The size (in GiB) to allocate for the root volume	string	null	no
single_nat_gateway	Should be true if you want to provision a single shared NAT Gateway across all of your private networks	bool	true	no
spot_percentage	Sets the percentage of nodes that should be Spot (vs On-Demand) in the cluster	number	100	no
spotinst_account	Spot account ID	string	n/a	yes
spotinst_token	Spot Personal Access token	string	n/a	yes
subnets	A list of subnets to place the EKS cluster and workers within	list(string)	null	no
tags	A map of tags to add to all resources. Tags added to launch configuration or templates override these values for ASG Tags only	map(string)	{}	no
update_policy	Configures the cluster update policy	object({ should_roll = bool batch_size_percentage = number launch_spec_ids = list(string) })	null	no
vpc_id	VPC where the cluster and workers will be deployed	string	null	no
whitelist	List of instance types allowed in the Ocean cluster (whitelist and blacklist are mutually exclusive)	list(string)	null	no
worker_additional_security_group_ids	A list of additional security group ids to attach to worker instances	list(string)	[]	no
worker_ami_name_filter	Name filter for AWS EKS worker AMI. If not provided, the latest official AMI for the specified 'cluster_version' is used	string	""	no
worker_ami_name_filter_windows	Name filter for AWS EKS Windows worker AMI. If not provided, the latest official AMI for the specified 'cluster_version' is used	string	""	no
worker_ami_owner_id	The ID of the owner for the AMI to use for the AWS EKS workers. Valid values are an AWS account ID, 'self' (the current account), or an AWS owner alias (e.g. 'amazon', 'aws-marketplace', 'microsoft')	string	"amazon"	no
worker_ami_owner_id_windows	The ID of the owner for the AMI to use for the AWS EKS Windows workers. Valid values are an AWS account ID, 'self' (the current account), or an AWS owner alias (e.g. 'amazon', 'aws-marketplace', 'microsoft')	string	"amazon"	no
worker_create_cluster_primary_security_group_rules	Whether to create security group rules to allow communication between pods on workers and pods using the primary cluster security group	bool	false	no
worker_create_initial_lifecycle_hooks	Whether to create initial lifecycle hooks provided in worker groups	bool	false	no
worker_create_security_group	Whether to create a security group for the workers or attach the workers to worker_security_group_id	bool	true	no
worker_groups	A list of maps defining worker group configurations to be defined using AWS Launch Configurations. See workers_group_defaults for valid keys	any	[ { "asg_desired_capacity": 0, "asg_max_size": 0, "asg_min_size": 0 } ]	no
worker_groups_launch_template	A list of maps defining worker group configurations to be defined using AWS Launch Templates. See workers_group_defaults for valid keys	any	[]	no
worker_security_group_id	If provided, all workers will be attached to this security group. If not given, a security group will be created with necessary ingress/egress to work with the EKS cluster	string	""	no
worker_sg_ingress_from_port	Minimum port number from which pods will accept communication. Must be changed to a lower value if some pods in your cluster will expose a port lower than 1025 (e.g. 22, 80, or 443)	number	1025	no
worker_user_data	User data to pass to worker node instances. If none is provided, a default Linux EKS bootstrap script is used	string	null	no
workers_additional_policies	Additional policies to be added to workers	list(string)	[]	no
workers_group_defaults	Override default values for target groups. See workers_group_defaults_defaults in local.tf for valid keys	any	{}	no
workers_role_name	User defined workers role name	string	""	no
write_kubeconfig	Whether to write a Kubectl config file containing the cluster configuration. Saved to kubeconfig_output_path	bool	true	no

Outputs

Name	Description
cloudwatch_log_group_arn	ARN of cloudwatch log group created
cloudwatch_log_group_name	Name of cloudwatch log group created
cluster_arn	The Amazon Resource Name (ARN) of the cluster
cluster_ca_certificate	Cluster CA certificate (base64 encoded)
cluster_certificate_authority_data	Nested attribute containing certificate-authority-data for your cluster. This is the base64 encoded certificate data required to communicate with your cluster
cluster_endpoint	The endpoint for your EKS Kubernetes API
cluster_iam_role_arn	IAM role ARN of the EKS cluster
cluster_iam_role_name	IAM role name of the EKS cluster
cluster_id	The name/id of the EKS cluster. Will block on cluster creation until the cluster is really ready
cluster_oidc_issuer_url	The URL on the EKS cluster OIDC Issuer
cluster_primary_security_group_id	The cluster primary security group ID created by the EKS cluster on 1.14 or later. Referred to as 'Cluster security group' in the EKS console
cluster_security_group_id	Security group ID attached to the EKS cluster. On 1.14 or later, this is the 'Additional security groups' in the EKS console
cluster_token	The token to use to authenticate with the cluster
cluster_version	The Kubernetes server version for the EKS cluster
config_map_aws_auth	A kubernetes configuration to authenticate to this EKS cluster
kubeconfig	kubectl config file contents for this EKS cluster
kubeconfig_filename	The filename of the generated kubectl config
ocean_cluster_id	The ID of the Ocean cluster
ocean_controller_id	The ID of the Ocean controller
oidc_provider_arn	The ARN of the OIDC Provider if enable_irsa = true
security_group_rule_cluster_https_worker_ingress	Security group rule responsible for allowing pods to communicate with the EKS cluster API
worker_iam_instance_profile_arns	Default IAM instance profile ARN for EKS worker groups
worker_iam_instance_profile_names	Default IAM instance profile name for EKS worker groups
worker_iam_role_arn	Default IAM role ARN for EKS worker groups
worker_iam_role_name	Default IAM role name for EKS worker groups
worker_security_group_id	Security group ID attached to the EKS workers
workers_default_ami_id	ID of the default worker group AMI
workers_user_data	User data of worker groups

Documentation

If you're new to Spot and want to get started, please checkout our Getting Started guide, available on the Spot Documentation website.

Getting Help

We use GitHub issues for tracking bugs and feature requests. Please use these community resources for getting help:

• Ask a question on Stack Overflow and tag it with terraform-spotinst.
• Join our Spot community on Slack.
• Open an issue.

Community

• Slack
• Twitter

Contributing

Please see the contribution guidelines.

License

Code is licensed under the Apache License 2.0.