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terraform-aws-eks/local.tf

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locals {
asg_tags = ["${null_resource.tags_as_list_of_maps.*.triggers}"]
# Followed recommendation http://67bricks.com/blog/?p=85
# to workaround terraform not supporting short circut evaluation
cluster_security_group_id = "${coalesce(join("", aws_security_group.cluster.*.id), var.cluster_security_group_id)}"
worker_security_group_id = "${coalesce(join("", aws_security_group.workers.*.id), var.worker_security_group_id)}"
default_iam_role_id = "${element(concat(aws_iam_role.workers.*.id, list("")), 0)}"
kubeconfig_name = "${var.kubeconfig_name == "" ? "eks_${var.cluster_name}" : var.kubeconfig_name}"
workers_group_defaults_defaults = {
name = "count.index" # Name of the worker group. Literal count.index will never be used but if name is not set, the count.index interpolation will be used.
ami_id = "${data.aws_ami.eks_worker.id}" # AMI ID for the eks workers. If none is provided, Terraform will search for the latest version of their EKS optimized worker AMI.
asg_desired_capacity = "1" # Desired worker capacity in the autoscaling group.
asg_max_size = "3" # Maximum worker capacity in the autoscaling group.
asg_min_size = "1" # Minimum worker capacity in the autoscaling group.
instance_type = "m4.large" # Size of the workers instances.
spot_price = "" # Cost of spot instance.
placement_tenancy = "" # The tenancy of the instance. Valid values are "default" or "dedicated".
root_volume_size = "100" # root volume size of workers instances.
root_volume_type = "gp2" # root volume type of workers instances, can be 'standard', 'gp2', or 'io1'
root_iops = "0" # The amount of provisioned IOPS. This must be set with a volume_type of "io1".
key_name = "" # The key name that should be used for the instances in the autoscaling group
pre_userdata = "" # userdata to pre-append to the default userdata.
additional_userdata = "" # userdata to append to the default userdata.
ebs_optimized = true # sets whether to use ebs optimization on supported types.
enable_monitoring = true # Enables/disables detailed monitoring.
public_ip = false # Associate a public ip address with a worker
kubelet_extra_args = "" # This string is passed directly to kubelet if set. Useful for adding labels or taints.
subnets = "${join(",", var.subnets)}" # A comma delimited string of subnets to place the worker nodes in. i.e. subnet-123,subnet-456,subnet-789
autoscaling_enabled = false # Sets whether policy and matching tags will be added to allow autoscaling.
additional_security_group_ids = "" # A comma delimited list of additional security group ids to include in worker launch config
protect_from_scale_in = false # Prevent AWS from scaling in, so that cluster-autoscaler is solely responsible.
iam_role_id = "${local.default_iam_role_id}" # Use the specified IAM role if set.
suspended_processes = "" # A comma delimited string of processes to to suspend. i.e. AZRebalance,HealthCheck,ReplaceUnhealthy
target_group_arns = "" # A comma delimited list of ALB target group ARNs to be associated to the ASG
}
workers_group_defaults = "${merge(local.workers_group_defaults_defaults, var.workers_group_defaults)}"
workers_group_launch_template_defaults_defaults = {
name = "count.index" # Name of the worker group. Literal count.index will never be used but if name is not set, the count.index interpolation will be used.
ami_id = "${data.aws_ami.eks_worker.id}" # AMI ID for the eks workers. If none is provided, Terraform will search for the latest version of their EKS optimized worker AMI.
root_block_device_id = "${data.aws_ami.eks_worker.root_device_name}" # Root device name for workers. If non is provided, will assume default AMI was used.
asg_desired_capacity = "1" # Desired worker capacity in the autoscaling group.
asg_max_size = "3" # Maximum worker capacity in the autoscaling group.
asg_min_size = "1" # Minimum worker capacity in the autoscaling group.
instance_type = "m4.large" # Size of the workers instances.
override_instance_type = "t3.large" # Need to specify at least one additional instance type for mixed instances policy. The instance_type holds higher priority for on demand instances.
on_demand_allocation_strategy = "prioritized" # Strategy to use when launching on-demand instances. Valid values: prioritized.
on_demand_base_capacity = "0" # Absolute minimum amount of desired capacity that must be fulfilled by on-demand instances
on_demand_percentage_above_base_capacity = "100" # Percentage split between on-demand and Spot instances above the base on-demand capacity
spot_allocation_strategy = "lowest-price" # The only valid value is lowest-price, which is also the default value. The Auto Scaling group selects the cheapest Spot pools and evenly allocates your Spot capacity across the number of Spot pools that you specify.
spot_instance_pools = 10 # "Number of Spot pools per availability zone to allocate capacity. EC2 Auto Scaling selects the cheapest Spot pools and evenly allocates Spot capacity across the number of Spot pools that you specify."
spot_max_price = "" # Maximum price per unit hour that the user is willing to pay for the Spot instances. Default is the on-demand price
spot_price = "" # Cost of spot instance.
placement_tenancy = "default" # The tenancy of the instance. Valid values are "default" or "dedicated".
root_volume_size = "100" # root volume size of workers instances.
root_volume_type = "gp2" # root volume type of workers instances, can be 'standard', 'gp2', or 'io1'
root_iops = "0" # The amount of provisioned IOPS. This must be set with a volume_type of "io1".
key_name = "" # The key name that should be used for the instances in the autoscaling group
pre_userdata = "" # userdata to pre-append to the default userdata.
additional_userdata = "" # userdata to append to the default userdata.
ebs_optimized = true # sets whether to use ebs optimization on supported types.
enable_monitoring = true # Enables/disables detailed monitoring.
public_ip = false # Associate a public ip address with a worker
kubelet_extra_args = "" # This string is passed directly to kubelet if set. Useful for adding labels or taints.
subnets = "${join(",", var.subnets)}" # A comma delimited string of subnets to place the worker nodes in. i.e. subnet-123,subnet-456,subnet-789
autoscaling_enabled = false # Sets whether policy and matching tags will be added to allow autoscaling.
additional_security_group_ids = "" # A comma delimited list of additional security group ids to include in worker launch config
protect_from_scale_in = false # Prevent AWS from scaling in, so that cluster-autoscaler is solely responsible.
iam_role_id = "${local.default_iam_role_id}" # Use the specified IAM role if set.
suspended_processes = "" # A comma delimited string of processes to to suspend. i.e. AZRebalance,HealthCheck,ReplaceUnhealthy
target_group_arns = "" # A comma delimited list of ALB target group ARNs to be associated to the ASG
}
workers_group_launch_template_defaults = "${merge(local.workers_group_launch_template_defaults_defaults, var.workers_group_launch_template_defaults)}"
ebs_optimized = {
"c1.medium" = false
"c1.xlarge" = true
"c3.large" = false
"c3.xlarge" = true
"c3.2xlarge" = true
"c3.4xlarge" = true
"c3.8xlarge" = false
"c4.large" = true
"c4.xlarge" = true
"c4.2xlarge" = true
"c4.4xlarge" = true
"c4.8xlarge" = true
"c5.large" = true
"c5.xlarge" = true
"c5.2xlarge" = true
"c5.4xlarge" = true
"c5.9xlarge" = true
"c5.18xlarge" = true
"c5d.large" = true
"c5d.xlarge" = true
"c5d.2xlarge" = true
"c5d.4xlarge" = true
"c5d.9xlarge" = true
"c5d.18xlarge" = true
"cc2.8xlarge" = false
"cr1.8xlarge" = false
"d2.xlarge" = true
"d2.2xlarge" = true
"d2.4xlarge" = true
"d2.8xlarge" = true
"f1.2xlarge" = true
"f1.4xlarge" = true
"f1.16xlarge" = true
"g2.2xlarge" = true
"g2.8xlarge" = false
"g3.4xlarge" = true
"g3.8xlarge" = true
"g3.16xlarge" = true
"h1.2xlarge" = true
"h1.4xlarge" = true
"h1.8xlarge" = true
"h1.16xlarge" = true
"hs1.8xlarge" = false
"i2.xlarge" = true
"i2.2xlarge" = true
"i2.4xlarge" = true
"i2.8xlarge" = false
"i3.large" = true
"i3.xlarge" = true
"i3.2xlarge" = true
"i3.4xlarge" = true
"i3.8xlarge" = true
"i3.16xlarge" = true
"i3.metal" = true
"m1.small" = false
"m1.medium" = false
"m1.large" = true
"m1.xlarge" = true
"m2.xlarge" = false
"m2.2xlarge" = true
"m2.4xlarge" = true
"m3.medium" = false
"m3.large" = false
"m3.xlarge" = true
"m3.2xlarge" = true
"m4.large" = true
"m4.xlarge" = true
"m4.2xlarge" = true
"m4.4xlarge" = true
"m4.10xlarge" = true
"m4.16xlarge" = true
"m5.large" = true
"m5.xlarge" = true
"m5.2xlarge" = true
"m5.4xlarge" = true
"m5.9xlarge" = true
"m5.18xlarge" = true
"m5d.large" = true
"m5d.xlarge" = true
"m5d.2xlarge" = true
"m5d.4xlarge" = true
"m5d.12xlarge" = true
"m5d.24xlarge" = true
"p2.xlarge" = true
"p2.8xlarge" = true
"p2.16xlarge" = true
"p3.2xlarge" = true
"p3.8xlarge" = true
"p3.16xlarge" = true
"r3.large" = false
"r3.xlarge" = true
"r3.2xlarge" = true
"r3.4xlarge" = true
"r3.8xlarge" = false
"r4.large" = true
"r4.xlarge" = true
"r4.2xlarge" = true
"r4.4xlarge" = true
"r4.8xlarge" = true
"r4.16xlarge" = true
"t1.micro" = false
"t2.nano" = false
"t2.micro" = false
"t2.small" = false
"t2.medium" = false
"t2.large" = false
"t2.xlarge" = false
"t2.2xlarge" = false
"t3.nano" = true
"t3.micro" = true
"t3.small" = true
"t3.medium" = true
"t3.large" = true
"t3.xlarge" = true
"t3.2xlarge" = true
"x1.16xlarge" = true
"x1.32xlarge" = true
"x1e.xlarge" = true
"x1e.2xlarge" = true
"x1e.4xlarge" = true
"x1e.8xlarge" = true
"x1e.16xlarge" = true
"x1e.32xlarge" = true
}
}
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