mirror of
https://github.com/puppetmaster/typhoon.git
synced 2024-12-25 18:49:33 +01:00
93ebfc7dd0
* Change subnet references to source and destinations prefixes (plural) * Remove references to a resource group in some load balancing components, which no longer require it (inferred) * Rename `worker_address_prefix` output to `worker_address_prefixes`
78 lines
2.5 KiB
Markdown
78 lines
2.5 KiB
Markdown
# Azure
|
|
|
|
## Load Balancing
|
|
|
|
|
|
|
|
### kube-apiserver
|
|
|
|
A load balancer distributes IPv4 TCP/6443 traffic across a backend address pool of controllers with a healthy `kube-apiserver`. Clusters with multiple controllers use an availability set with 2 fault domains to tolerate hardware failures within Azure.
|
|
|
|
### HTTP/HTTPS Ingress
|
|
|
|
A load balancer distributes IPv4 TCP/80 and TCP/443 traffic across a backend address pool of workers with a healthy Ingress controller.
|
|
|
|
The Azure LB IPv4 address is output as `ingress_static_ipv4` for use in DNS A records. See [Ingress on Azure](/addons/ingress/#azure).
|
|
|
|
### TCP/UDP Services
|
|
|
|
Load balance TCP/UDP applications by adding rules to the Azure LB (output). A rule may map different ports (e.g. 3333 external, 30333 internal).
|
|
|
|
```tf
|
|
# Forward traffic to the worker backend address pool
|
|
resource "azurerm_lb_rule" "some-app-tcp" {
|
|
resource_group_name = module.ramius.resource_group_name
|
|
|
|
name = "some-app-tcp"
|
|
loadbalancer_id = module.ramius.loadbalancer_id
|
|
frontend_ip_configuration_name = "ingress"
|
|
|
|
protocol = "Tcp"
|
|
frontend_port = 3333
|
|
backend_port = 30333
|
|
backend_address_pool_id = module.ramius.backend_address_pool_id
|
|
probe_id = azurerm_lb_probe.some-app.id
|
|
}
|
|
|
|
# Health check some-app
|
|
resource "azurerm_lb_probe" "some-app" {
|
|
resource_group_name = module.ramius.resource_group_name
|
|
|
|
name = "some-app"
|
|
loadbalancer_id = module.ramius.loadbalancer_id
|
|
protocol = "Tcp"
|
|
port = 30333
|
|
}
|
|
```
|
|
|
|
## Firewalls
|
|
|
|
Add firewall rules to the worker security group.
|
|
|
|
```tf
|
|
resource "azurerm_network_security_rule" "some-app" {
|
|
resource_group_name = "${module.ramius.resource_group_name}"
|
|
|
|
name = "some-app"
|
|
network_security_group_name = module.ramius.worker_security_group_name
|
|
priority = "3001"
|
|
access = "Allow"
|
|
direction = "Inbound"
|
|
protocol = "Tcp"
|
|
source_port_range = "*"
|
|
destination_port_range = "30333"
|
|
source_address_prefix = "*"
|
|
destination_address_prefixes = module.ramius.worker_address_prefixes
|
|
}
|
|
```
|
|
|
|
## IPv6
|
|
|
|
Azure does not provide public IPv6 addresses at the standard SKU.
|
|
|
|
| IPv6 Feature | Supported |
|
|
|-------------------------|-----------|
|
|
| Node IPv6 address | No |
|
|
| Node Outbound IPv6 | No |
|
|
| Kubernetes Ingress IPv6 | No |
|