kjuulh/terraform-hcloud-kube-hetzner
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make private key optional

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Setting private_key to null uses the local ssh-agent as a fallback for
authentication. Using the public_key instead of the private_key for
ssh -i lets the agent select the right identity if loaded. tested
with a yubikey
This commit is contained in:
phaer 2022-01-23 14:05:41 +01:00
parent 2ef034bdf0
commit 1236bbe6f3
4 changed files with 14 additions and 7 deletions
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6
agents.tf
View File

@ -28,7 +28,8 @@ resource "hcloud_server" "agents" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }
@ -39,7 +40,8 @@ resource "hcloud_server" "agents" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }

8
master.tf
View File

@ -24,7 +24,8 @@ resource "hcloud_server" "first_control_plane" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }
@ -35,7 +36,8 @@ resource "hcloud_server" "first_control_plane" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }
@ -43,7 +45,7 @@ resource "hcloud_server" "first_control_plane" {
# Wait for k3os to be ready and fetch kubeconfig.yaml # Wait for k3os to be ready and fetch kubeconfig.yaml
provisioner "local-exec" { provisioner "local-exec" {
command = <<-EOT command = <<-EOT
sleep 60 && ping ${self.ipv4_address} | grep --line-buffered "bytes from" | head -1 && sleep 100 && scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${var.private_key} rancher@${self.ipv4_address}:/etc/rancher/k3s/k3s.yaml ${path.module}/kubeconfig.yaml sleep 60 && ping ${self.ipv4_address} | grep --line-buffered "bytes from" | head -1 && sleep 100 && scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -i ${var.private_key == null ? var.public_key : var.private_key} rancher@${self.ipv4_address}:/etc/rancher/k3s/k3s.yaml ${path.module}/kubeconfig.yaml
sed -i -e 's/127.0.0.1/${self.ipv4_address}/g' ${path.module}/kubeconfig.yaml sed -i -e 's/127.0.0.1/${self.ipv4_address}/g' ${path.module}/kubeconfig.yaml
EOT EOT
} }

6
servers.tf
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@ -27,7 +27,8 @@ resource "hcloud_server" "control_planes" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }
@ -38,7 +39,8 @@ resource "hcloud_server" "control_planes" {
connection { connection {
user = "root" user = "root"
private_key = file(var.private_key) private_key = var.private_key == null ? null : file(var.private_key)
agent_identity = var.private_key == null ? file(var.public_key) : null
host = self.ipv4_address host = self.ipv4_address
} }
} }

1
variables.tf
View File

@ -12,6 +12,7 @@ variable "public_key" {
variable "private_key" { variable "private_key" {
description = "SSH private Key." description = "SSH private Key."
type = string type = string
default = null
} }
variable "location" { variable "location" {