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Fix to add all Azure controller nodes to address pool 

* Add all Azure controllers to the apiserver load balancer
backend address pool
* Previously, kube-apiserver availability relied on the 0th
controller being up. Multi-controller was just providing etcd
data redundancy
This commit is contained in:
Dalton Hubble 2019-07-21 10:32:58 -07:00
parent f543f08867
commit c8df349e55
2 changed files with 8 additions and 1 deletions
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5
CHANGES.md
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@ -11,6 +11,11 @@ Notable changes between versions.
* Relax `terraform-provider-ct` version constraint (v0.3.2+) * Relax `terraform-provider-ct` version constraint (v0.3.2+)
* Allow provider versions below v1.0.0 (e.g. upgrading to v0.4) * Allow provider versions below v1.0.0 (e.g. upgrading to v0.4)
#### Azure
* Fix to add all controller nodes to the apiserver load balancer backend address pool ([#518](https://github.com/poseidon/typhoon/pull/518))
* kube-apiserver availability relied on the 0th controller
#### Google Cloud #### Google Cloud
* Allow controller nodes to span more than 3 zones if available in a region ([#504](https://github.com/poseidon/typhoon/pull/504)) * Allow controller nodes to span more than 3 zones if available in a region ([#504](https://github.com/poseidon/typhoon/pull/504))

4
azure/container-linux/kubernetes/controllers.tf
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@ -114,7 +114,9 @@ resource "azurerm_network_interface" "controllers" {
# Add controller NICs to the controller backend address pool # Add controller NICs to the controller backend address pool
resource "azurerm_network_interface_backend_address_pool_association" "controllers" { resource "azurerm_network_interface_backend_address_pool_association" "controllers" {
network_interface_id = azurerm_network_interface.controllers[0].id count = var.controller_count
network_interface_id = azurerm_network_interface.controllers[count.index].id
ip_configuration_name = "ip0" ip_configuration_name = "ip0"
backend_address_pool_id = azurerm_lb_backend_address_pool.controller.id backend_address_pool_id = azurerm_lb_backend_address_pool.controller.id
} }