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improvement: Remove dependency on external template provider (#854)

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* Remove template_file for generating kubeconfig

Push logic from terraform down to the template. Makes the formatting
slightly easier to follow

* Remove template_file for generating userdata

Updates to the eks_cluster now do not trigger recreation of launch
configurations

* Remove template_file for LT userdata

* Remove template dependency
This commit is contained in:
Daniel Piddock
2020-05-06 10:54:14 +02:00
committed by GitHub
parent 25ebaab1cc
commit b183b97253
8 changed files with 108 additions and 135 deletions
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212
data.tf
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@@ -66,138 +66,104 @@ data "aws_iam_policy_document" "cluster_assume_role_policy" {
}
}
data "template_file" "kubeconfig" {
count = var.create_eks ? 1 : 0
template = file("${path.module}/templates/kubeconfig.tpl")
locals {
kubeconfig = var.create_eks ? templatefile("${path.module}/templates/kubeconfig.tpl", {
kubeconfig_name = local.kubeconfig_name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
aws_authenticator_command = var.kubeconfig_aws_authenticator_command
aws_authenticator_command_args = length(var.kubeconfig_aws_authenticator_command_args) > 0 ? var.kubeconfig_aws_authenticator_command_args : ["token", "-i", aws_eks_cluster.this[0].name]
aws_authenticator_additional_args = var.kubeconfig_aws_authenticator_additional_args
aws_authenticator_env_variables = var.kubeconfig_aws_authenticator_env_variables
}) : ""
vars = {
kubeconfig_name = local.kubeconfig_name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
aws_authenticator_command = var.kubeconfig_aws_authenticator_command
aws_authenticator_command_args = length(var.kubeconfig_aws_authenticator_command_args) > 0 ? " - ${join(
"\n - ",
var.kubeconfig_aws_authenticator_command_args,
)}" : " - ${join(
"\n - ",
formatlist("\"%s\"", ["token", "-i", aws_eks_cluster.this[0].name]),
)}"
aws_authenticator_additional_args = length(var.kubeconfig_aws_authenticator_additional_args) > 0 ? " - ${join(
"\n - ",
var.kubeconfig_aws_authenticator_additional_args,
)}" : ""
aws_authenticator_env_variables = length(var.kubeconfig_aws_authenticator_env_variables) > 0 ? " env:\n${join(
"\n",
data.template_file.aws_authenticator_env_variables.*.rendered,
)}" : ""
}
}
data "template_file" "aws_authenticator_env_variables" {
count = length(var.kubeconfig_aws_authenticator_env_variables)
template = <<EOF
- name: $${key}
value: $${value}
EOF
vars = {
value = values(var.kubeconfig_aws_authenticator_env_variables)[count.index]
key = keys(var.kubeconfig_aws_authenticator_env_variables)[count.index]
}
}
data "template_file" "userdata" {
count = var.create_eks ? local.worker_group_count : 0
template = lookup(
var.worker_groups[count.index],
"userdata_template_file",
file(
lookup(var.worker_groups[count.index], "platform", local.workers_group_defaults["platform"]) == "windows"
userdata = [for worker in var.worker_groups : templatefile(
lookup(
worker,
"userdata_template_file",
lookup(worker, "platform", local.workers_group_defaults["platform"]) == "windows"
? "${path.module}/templates/userdata_windows.tpl"
: "${path.module}/templates/userdata.sh.tpl"
),
merge(
{
platform = lookup(worker, "platform", local.workers_group_defaults["platform"])
cluster_name = aws_eks_cluster.this[0].name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
pre_userdata = lookup(
worker,
"pre_userdata",
local.workers_group_defaults["pre_userdata"],
)
additional_userdata = lookup(
worker,
"additional_userdata",
local.workers_group_defaults["additional_userdata"],
)
bootstrap_extra_args = lookup(
worker,
"bootstrap_extra_args",
local.workers_group_defaults["bootstrap_extra_args"],
)
kubelet_extra_args = lookup(
worker,
"kubelet_extra_args",
local.workers_group_defaults["kubelet_extra_args"],
)
},
lookup(
worker,
"userdata_template_extra_args",
local.workers_group_defaults["userdata_template_extra_args"]
)
)
)
) if var.create_eks
]
vars = merge({
platform = lookup(var.worker_groups[count.index], "platform", local.workers_group_defaults["platform"])
cluster_name = aws_eks_cluster.this[0].name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
pre_userdata = lookup(
var.worker_groups[count.index],
"pre_userdata",
local.workers_group_defaults["pre_userdata"],
)
additional_userdata = lookup(
var.worker_groups[count.index],
"additional_userdata",
local.workers_group_defaults["additional_userdata"],
)
bootstrap_extra_args = lookup(
var.worker_groups[count.index],
"bootstrap_extra_args",
local.workers_group_defaults["bootstrap_extra_args"],
)
kubelet_extra_args = lookup(
var.worker_groups[count.index],
"kubelet_extra_args",
local.workers_group_defaults["kubelet_extra_args"],
)
},
launch_template_userdata = [for worker in var.worker_groups_launch_template : templatefile(
lookup(
var.worker_groups[count.index],
"userdata_template_extra_args",
local.workers_group_defaults["userdata_template_extra_args"]
)
)
}
data "template_file" "launch_template_userdata" {
count = var.create_eks ? local.worker_group_launch_template_count : 0
template = lookup(
var.worker_groups_launch_template[count.index],
"userdata_template_file",
file(
lookup(var.worker_groups_launch_template[count.index], "platform", local.workers_group_defaults["platform"]) == "windows"
worker,
"userdata_template_file",
lookup(worker, "platform", local.workers_group_defaults["platform"]) == "windows"
? "${path.module}/templates/userdata_windows.tpl"
: "${path.module}/templates/userdata.sh.tpl"
),
merge(
{
platform = lookup(worker, "platform", local.workers_group_defaults["platform"])
cluster_name = aws_eks_cluster.this[0].name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
pre_userdata = lookup(
worker,
"pre_userdata",
local.workers_group_defaults["pre_userdata"],
)
additional_userdata = lookup(
worker,
"additional_userdata",
local.workers_group_defaults["additional_userdata"],
)
bootstrap_extra_args = lookup(
worker,
"bootstrap_extra_args",
local.workers_group_defaults["bootstrap_extra_args"],
)
kubelet_extra_args = lookup(
worker,
"kubelet_extra_args",
local.workers_group_defaults["kubelet_extra_args"],
)
},
lookup(
worker,
"userdata_template_extra_args",
local.workers_group_defaults["userdata_template_extra_args"]
)
)
)
vars = merge({
platform = lookup(var.worker_groups_launch_template[count.index], "platform", local.workers_group_defaults["platform"])
cluster_name = aws_eks_cluster.this[0].name
endpoint = aws_eks_cluster.this[0].endpoint
cluster_auth_base64 = aws_eks_cluster.this[0].certificate_authority[0].data
pre_userdata = lookup(
var.worker_groups_launch_template[count.index],
"pre_userdata",
local.workers_group_defaults["pre_userdata"],
)
additional_userdata = lookup(
var.worker_groups_launch_template[count.index],
"additional_userdata",
local.workers_group_defaults["additional_userdata"],
)
bootstrap_extra_args = lookup(
var.worker_groups_launch_template[count.index],
"bootstrap_extra_args",
local.workers_group_defaults["bootstrap_extra_args"],
)
kubelet_extra_args = lookup(
var.worker_groups_launch_template[count.index],
"kubelet_extra_args",
local.workers_group_defaults["kubelet_extra_args"],
)
},
lookup(
var.worker_groups_launch_template[count.index],
"userdata_template_extra_args",
local.workers_group_defaults["userdata_template_extra_args"]
)
)
) if var.create_eks
]
}
data "aws_iam_role" "custom_cluster_iam_role" {