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Terraform module for Digital Ocean Kubernetes (DOKS)

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galactus digitalocean terraform-module terraform doks

terraform-digitalocean-doks's Introduction

terraform-digitalocean-doks

Terraform module which configure a Kubernetes cluster (DOKS) on Digital Ocean

Documentation

Requirements

Name	Version
terraform	>= 1.0.0
digitalocean	>= 2.10.0

Providers

Name	Version
digitalocean	>= 2.10.0

Modules

No modules.

Resources

Name	Type
digitalocean_kubernetes_cluster.k8s	resource
digitalocean_kubernetes_node_pool.node_pools	resource
digitalocean_kubernetes_versions.k8s	data source
digitalocean_sizes.k8s	data source

Inputs

Name	Description	Type	Default	Required
auto_scale	Enable cluster autoscaling	`bool`	n/a	yes
auto_upgrade	Whether the cluster will be automatically upgraded	`bool`	n/a	yes
cluster_name	Cluster name	`string`	n/a	yes
kubernetes_version	The Kubernetes version	`string`	n/a	yes
maintenance_policy_day	The day of the maintenance window policy	`string`	n/a	yes
maintenance_policy_start_time	The start time in UTC of the maintenance window policy in 24-hour clock format / HH:MM notation	`string`	n/a	yes
max_nodes	Autoscaling maximum node capacity	`string`	`5`	no
min_nodes	Autoscaling Minimum node capacity	`string`	`1`	no
node_count	The number of Droplet instances in the node pool.	`number`	n/a	yes
node_labels	List of Kubernetes labels to apply to the nodes	`map(any)`	{ "service": "kubernetes" }	no
node_pools	Addons node pools	map(object({ size = string node_count = number auto_scale = bool min_nodes = number max_nodes = number node_tags = list(string) node_labels = map(string) }))	`{}`	no
node_tags	The list of instance tags applied to all nodes.	`list(any)`	[ "kubernetes" ]	no
region	The location of the cluster	`string`	n/a	yes
size	The slug identifier for the type of Droplet to be used as workers in the node pool.	`string`	n/a	yes
surge_upgrade	Enable/disable surge upgrades for a cluster	`bool`	`false`	no
tags	The list of instance tags applied to the cluster.	`list(any)`	[ "kubernetes" ]	no
vpc_uuid	The ID of the VPC where the Kubernetes cluster will be located	`string`	`""`	no

Outputs

No outputs.

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terraform-digitalocean-doks's Issues

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Update dependency hashicorp/terraform to v1.1.2

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Variable node_count overrides autoscaling

Hey there!

Thank you very much for your module, I'm using it here and it works well.

I'm not sure if you could call it a bug but based on my experience with the module I have discovered that Terraform resets the number of worker nodes to node_count when a subsequent run is triggered. This causes unnecessary scalings as the applications deployed on the cluster will immediately trigger a new scale up after Terraform has scaled down.

I've tried to fix this by setting the node_count to 0 when auto_scaling is enabled, but it didn't work as the node_count needs to be at least 1. Seems like the only way to really "fix" this is to remove the node_count attribute in cluster.tf. A dirty workaround I could imagine would be to have two cluster resources and use count to enable and disable one of them based on the auto_scaling var.

Any inputs on that? Would it be an option to remove the node_count var?

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Detected dependencies

github-actions

.github/workflows/draft-labels.yml

jinmayamashita/ready-for-review 1.0.0

.github/workflows/prow-labels.yml

.github/workflows/prow-lgtm-merge.yml

jpmcb/prow-github-actions v1.1.3

.github/workflows/prow-lgtm-pull.yml

jpmcb/prow-github-actions v1.1.3

.github/workflows/prow.yml

jpmcb/prow-github-actions v1.1.3

.github/workflows/rebase.yml

actions/checkout v3

cirrus-actions/rebase 1.8

.github/workflows/release-drafter.yml

release-drafter/release-drafter v5

.github/workflows/renovate.yml

actions/checkout v3

peter-evans/create-pull-request v4

.github/workflows/size.yaml

actions/checkout v3

actions-ecosystem/action-size v2

actions-ecosystem/action-remove-labels v1

actions-ecosystem/action-add-labels v1

.github/workflows/tflint.yml

actions/checkout v3

.github/workflows/tfsec.yml

actions/checkout v3

terraform

main.tf

digitalocean >= 2.10.0

hashicorp/terraform >= 1.0.0

terraform-version

.terraform-version

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