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48d4973957
* Define a dual-stack virtual network with both IPv4 and IPv6 private
address space. Change `host_cidr` variable (string) to a `network_cidr`
variable (object) with "ipv4" and "ipv6" fields that list CIDR strings.
* Define dual-stack controller and worker subnets. Disable Azure
default outbound access (a deprecated fallback mechanism)
* Enable dual-stack load balancing to Kubernetes Ingress by adding
a public IPv6 frontend IP and LB rule to the load balancer.
* Enable worker outbound IPv6 connectivity through load balancer
SNAT by adding an IPv6 frontend IP and outbound rule
* Configure controller nodes with a public IPv6 address to provide
direct outbound IPv6 connectivity
* Add an IPv6 worker backend pool. Azure requires separate IPv4 and
IPv6 backend pools, though the health probe can be shared
* Extend network security group rules for IPv6 source/destinations
Checklist:
Access to controller and worker nodes via IPv6 addresses:
* SSH access to controller nodes via public IPv6 address
* SSH access to worker nodes via (private) IPv6 address (via
controller)
Outbound IPv6 connectivity from controller and worker nodes:
```
nc -6 -zv ipv6.google.com 80
Ncat: Version 7.94 ( https://nmap.org/ncat )
Ncat: Connected to [2607:f8b0:4001:c16::66]:80.
Ncat: 0 bytes sent, 0 bytes received in 0.02 seconds.
```
Serve Ingress traffic via IPv4 or IPv6 just requires setting
up A and AAAA records and running the ingress controller with
`hostNetwork: true` since, hostPort only forwards IPv4 traffic
89 lines
2.1 KiB
HCL
89 lines
2.1 KiB
HCL
output "kubeconfig-admin" {
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value = module.bootstrap.kubeconfig-admin
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sensitive = true
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}
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# Outputs for Kubernetes Ingress
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output "ingress_static_ipv4" {
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value = azurerm_public_ip.ingress-ipv4.ip_address
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description = "IPv4 address of the load balancer for distributing traffic to Ingress controllers"
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}
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output "ingress_static_ipv6" {
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value = azurerm_public_ip.ingress-ipv6.ip_address
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description = "IPv6 address of the load balancer for distributing traffic to Ingress controllers"
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}
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# Outputs for worker pools
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output "region" {
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value = azurerm_resource_group.cluster.location
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}
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output "resource_group_name" {
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value = azurerm_resource_group.cluster.name
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}
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output "resource_group_id" {
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value = azurerm_resource_group.cluster.id
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}
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output "subnet_id" {
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value = azurerm_subnet.worker.id
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}
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output "security_group_id" {
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value = azurerm_network_security_group.worker.id
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}
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output "kubeconfig" {
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value = module.bootstrap.kubeconfig-kubelet
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sensitive = true
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}
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# Outputs for custom firewalling
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output "controller_security_group_name" {
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description = "Network Security Group for controller nodes"
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value = azurerm_network_security_group.controller.name
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}
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output "worker_security_group_name" {
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description = "Network Security Group for worker nodes"
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value = azurerm_network_security_group.worker.name
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}
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output "controller_address_prefixes" {
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description = "Controller network subnet CIDR addresses (for source/destination)"
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value = local.controller_subnets
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}
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output "worker_address_prefixes" {
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description = "Worker network subnet CIDR addresses (for source/destination)"
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value = local.worker_subnets
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}
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# Outputs for custom load balancing
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output "loadbalancer_id" {
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description = "ID of the cluster load balancer"
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value = azurerm_lb.cluster.id
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}
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output "backend_address_pool_ids" {
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description = "IDs of the worker backend address pools"
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value = {
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ipv4 = [azurerm_lb_backend_address_pool.worker-ipv4.id]
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ipv6 = [azurerm_lb_backend_address_pool.worker-ipv6.id]
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}
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}
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# Outputs for debug
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output "assets_dist" {
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value = module.bootstrap.assets_dist
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sensitive = true
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}
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