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fix(iac): Refetch new kubeconfig if controller gets recreated #115

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fix(iac): Refetch new kubeconfig if controller gets recreated #115

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8 changes: 7 additions & 1 deletion terraform-modules/openstack-kubernetes-infra/kubeconfig-extraction.tf
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Original file line number Diff line number Diff line change
@@ -1,10 +1,16 @@
resource "null_resource" "copy_kubeconfig" {
depends_on = [openstack_compute_instance_v2.kubernetes_server, null_resource.kubernetes_server_provisioner]

# Re-fetch kubeconfig whenever the controller is replaced (new cluster CA/certs).
triggers = {
server_id = openstack_compute_instance_v2.kubernetes_server.id
ip_address = local.controller_host_instance.ip_address
}

provisioner "local-exec" {
# Copy the kubeconfig file from the host to a local file using SCP.
# Use ssh-keyscan to prevent interactive prompt on unknown host
# Use sed to replace the localhost address in the KUBECONFIG file with the actual IP adddress of the created VM.
# Use sed to replace the localhost address in the KUBECONFIG file with the actual IP adddress of the created VM.
command = <<EOT
mkdir -p ${path.root}/.build/ && \
ssh-keyscan -H ${local.controller_host_instance.ip_address} >> ${path.root}/.build/.known_hosts_cogstack && \
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2 changes: 1 addition & 1 deletion terraform-modules/openstack-kubernetes-infra/variables.tf
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Expand Up @@ -98,7 +98,7 @@ check "controller_floating_ip_required_for_non_default_network" {
assert {
condition = (var.network == null
|| (var.network.name == "external_4003" && var.network.network_id == null)
|| (length([for host in var.host_instances : host if host.is_controller == true && host.floating_ip.use_floating_ip == true]) == 1))
|| (length([for host in var.host_instances : host if host.is_controller == true && host.floating_ip.use_floating_ip == true]) == 1))
error_message = <<-EOT
When using a non-default network, the controller host should have a floating IP in order to be accessible by the terraform agent
EOT
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