Terraform Hetzner Module for Instellar

This module automatically forms LXD cluster on Hetzner Cloud. This terraform module will do the following:

• Setup networking
• Setup bastion node
• Setup compute instances
• Setup Private Key access
• Automatically form a cluster
• Destroy a cluster
• Enable removal of specific nodes gracefully
• Protect against database-leader deletion

These functionality come together to enable the user to fully manage LXD cluster using IaC (infrastructure as code)

Requirements

Name	Version
terraform	>= 1.0.0
hcloud	~> 1.38
tls	4.0.4

Providers

Name	Version
cloudinit	2.3.2
hcloud	1.38.2
ssh	2.6.0
terraform	n/a
tls	4.0.4

Modules

No modules.

Resources

Name	Type
hcloud_firewall.bastion_firewall	resource
hcloud_firewall.nodes_firewall	resource
hcloud_network.cluster_vpc	resource
hcloud_network_subnet.cluster_subnet	resource
hcloud_placement_group.nodes_group	resource
hcloud_server.bastion	resource
hcloud_server.bootstrap_node	resource
hcloud_server.nodes	resource
hcloud_ssh_key.bastion	resource
hcloud_ssh_key.terraform_cloud	resource
ssh_resource.cluster_join_token	resource
ssh_resource.node_detail	resource
ssh_resource.trust_token	resource
terraform_data.reboot	resource
terraform_data.removal	resource
tls_private_key.bastion_key	resource
tls_private_key.terraform_cloud	resource
cloudinit_config.config	data source

Inputs

Name	Description	Type	Default	Required
bastion_size	Size of the bastion instance defaults to Basic 512MB instance https://slugs.do-api.dev/	string	"cx11"	no
cluster_name	Name of your cluster	any	n/a	yes
cluster_topology	How many nodes do you want in your cluster?	list(object({ id = number name = string size = optional(string, "cpx11") }))	[]	no
hcloud_token	Hetzner Cloud API Token	any	n/a	yes
image	Image type of choice default is Ubuntu 22.04	string	"ubuntu-22.04"	no
location	Location of your server	string	"fsn1"	no
node_size	Type of server you want to provision	string	"cpx11"	no
protect_leader	Protect the node marked with database-leader	bool	true	no
region	Region of your cluster	string	"eu-central"	no
ssh_keys	List of ssh key names	list(string)	[]	no
storage_size	How big is the storage dedicated to the cluster	any	n/a	yes
subnet_ip_range	Subnet ip range	string	"10.0.1.0/24"	no

Outputs

Name	Description
cluster_address	n/a
trust_token	n/a