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feat: first draft of hcloud node pool
Signed-off-by: Henrik Gerdes <[email protected]>
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| # Default owners - required for review/approval | ||
| * @bryantbiggs | ||
| * @hegerdes |
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| #cloud-config | ||
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| ssh_pwauth: false | ||
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| groups: | ||
| - cloud | ||
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| users: | ||
| - name: myuser | ||
| sudo: ALL=(ALL) NOPASSWD:ALL | ||
| groups: users, cloud | ||
| shell: /bin/bash | ||
| lock_passwd: true | ||
| ssh_authorized_keys: | ||
| %{ for key in ssh_key ~} | ||
| - ${key} | ||
| %{ endfor ~} | ||
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| # Install base packages | ||
| package_update: true | ||
| package_upgrade: true | ||
| package_reboot_if_required: true | ||
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| power_state: | ||
| mode: reboot | ||
| message: Bye Bye | ||
| timeout: 300 | ||
| condition: True |
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| ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIEy5tYE3kwa+0NFEme99uxwlAyWhRcr3fvf/XsroGS4U [email protected] |
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| provider "aws" { | ||
| region = local.region | ||
| } | ||
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| data "aws_availability_zones" "available" {} | ||
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| locals { | ||
| region = "us-east-1" | ||
| name = "<TODO>-ex-${basename(path.cwd)}" | ||
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| vpc_cidr = "10.0.0.0/16" | ||
| azs = slice(data.aws_availability_zones.available.names, 0, 3) | ||
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| name = "hcloud-node-pool-${basename(path.cwd)}" | ||
| location = "fsn1" | ||
| network_name = "demo-net" | ||
| ssh_key_paths = ["~/.ssh/id_rsa.pub", "data/cloud-test.pub"] | ||
| ssh_keys = [for key in local.ssh_key_paths : file(key) if fileexists(key)] | ||
| cloud_init_path = "data/cloud-init-default.yml" | ||
| tags = { | ||
| Name = local.name | ||
| Example = local.name | ||
| Repository = "https://github.com/clowdhaus/terraform-aws-<TODO>" | ||
| name = local.name | ||
| example = local.name | ||
| # repository = "https://github.com/hegerdes/terraform-hcloud-node-pool" | ||
| } | ||
| } | ||
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| ################################################################################ | ||
| # <TODO_EXPANDED> Module | ||
| # hcloud-node-pool Module | ||
| ################################################################################ | ||
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| module "<TODO_UNDER>" { | ||
| module "disabled" { | ||
| source = "../.." | ||
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| create = false | ||
| size = 0 | ||
| name = "disabled" | ||
| location = local.location | ||
| } | ||
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| tags = local.tags | ||
| module "minimal" { | ||
| source = "../.." | ||
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| size = 1 | ||
| name = "minimal" | ||
| location = local.location | ||
| tags = local.tags | ||
| } | ||
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| module "<TODO_UNDER>_disabled" { | ||
| module "named" { | ||
| source = "../.." | ||
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| create = false | ||
| size = 3 | ||
| name = "named" | ||
| image = "ubuntu-22.04" | ||
| vm_names = ["vm1", "vm2", "vm3"] | ||
| location = local.location | ||
| instance_type = "cax11" | ||
| public_ipv4 = false | ||
| ssh_keys = local.ssh_keys | ||
| network_name = local.network_name | ||
| # Only works if ssh keys below are not created | ||
| # create_ssh_keys = true | ||
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| # Last vm will auto assign a pvt ip | ||
| private_ip_addresses = ["10.0.0.5", "10.0.0.6", "10.0.0.7"] | ||
| tags = local.tags | ||
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| depends_on = [hcloud_network.example] | ||
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| } | ||
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| module "advanced" { | ||
| source = "../.." | ||
| for_each = local.node_pools | ||
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| name = each.value.name | ||
| size = each.value.size | ||
| image = each.value.image | ||
| location = each.value.location | ||
| instance_type = each.value.instance | ||
| ssh_keys = each.value.ssh_keys | ||
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| tags = each.value.tags | ||
| user_data = each.value.user_data | ||
| network_name = each.value.network_name | ||
| private_ip_addresses = each.value.private_ip_addresses | ||
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| depends_on = [hcloud_network.example] | ||
| } | ||
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| # Multiple node_pools | ||
| locals { | ||
| node_pool_config = [ | ||
| { | ||
| name = "controlplane-node-amd64" | ||
| instance = "cx11" | ||
| image = "debian-12" | ||
| size = 1 | ||
| tags = { | ||
| k8s = "control-plane" | ||
| } | ||
| }, | ||
| { | ||
| name = "worker-node-amd64" | ||
| instance = "cx11" | ||
| image = "debian-12" | ||
| size = 1 | ||
| tags = { | ||
| k8s = "worker" | ||
| } | ||
| }, { | ||
| name = "worker-node-arm64" | ||
| instance = "cax11" | ||
| image = "debian-12" | ||
| size = 1 | ||
| tags = { | ||
| k8s = "worker" | ||
| } | ||
| } | ||
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| ] | ||
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| node_pools = { for index, pool in local.node_pool_config : | ||
| pool.name => merge( | ||
| pool, { | ||
| user_data = templatefile(local.cloud_init_path, { | ||
| ssh_key = [for key in local.ssh_keys : key] | ||
| }) | ||
| tags = merge(pool.tags, local.tags) | ||
| ssh_keys = [for key in hcloud_ssh_key.example : key.name] | ||
| network_name = hcloud_network.example.name | ||
| location = local.location | ||
| private_ip_addresses = try([for i in range(pool.size) : cidrhost("10.0.${index + 1}.0/24", i + 8)], []) | ||
| } | ||
| ) | ||
| } | ||
| } | ||
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| ################################################################################ | ||
| # Supporting Resources | ||
| # helper | ||
| ################################################################################ | ||
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| module "vpc" { | ||
| source = "terraform-aws-modules/vpc/aws" | ||
| version = "~> 4.0" | ||
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| name = local.name | ||
| cidr = local.vpc_cidr | ||
| resource "hcloud_network" "example" { | ||
| name = local.network_name | ||
| ip_range = "10.0.0.0/16" | ||
| } | ||
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| azs = local.azs | ||
| public_subnets = [for k, v in local.azs : cidrsubnet(local.vpc_cidr, 8, k)] | ||
| private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc_cidr, 8, k + 10)] | ||
| resource "hcloud_network_subnet" "subnet_1" { | ||
| type = "cloud" | ||
| network_id = hcloud_network.example.id | ||
| network_zone = "eu-central" | ||
| ip_range = "10.0.0.0/24" | ||
| } | ||
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| enable_nat_gateway = true | ||
| single_nat_gateway = true | ||
| resource "hcloud_ssh_key" "example" { | ||
| for_each = toset(local.ssh_keys) | ||
| name = sha256(each.key) | ||
| public_key = each.key | ||
| lifecycle { | ||
| create_before_destroy = false | ||
| } | ||
| } | ||
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| tags = local.tags | ||
| resource "hcloud_network_subnet" "subnet_n" { | ||
| type = "cloud" | ||
| network_id = hcloud_network.example.id | ||
| network_zone = "eu-central" | ||
| ip_range = "10.0.${count.index + 1}.0/24" | ||
| count = length(local.node_pools) | ||
| lifecycle { | ||
| create_before_destroy = false | ||
| } | ||
| } |
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