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Fix Azure worker UDP outbound SNAT and clock sync timeouts #691

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Apr 1, 2020
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Fix Azure worker UDP outbound SNAT and clock sync timeouts #691

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2 changes: 2 additions & 0 deletions CHANGES.md
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,8 @@ Notable changes between versions.
* Rename Container Linux `clc_snippets` (bare-metal) to `snippets` for consistency
* Fix bootstrap when `networking` mode `flannel` (non-default) is chosen ([#689](https://github.com/poseidon/typhoon/pull/689))
* Regressed in v1.18.0 changes for Calico ([#675](https://github.com/poseidon/typhoon/pull/675))
* Fix Azure worker UDP outbound connections ([#691](https://github.com/poseidon/typhoon/pull/691))
* Fix Azure worker clock sync timeouts

## v1.18.0

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16 changes: 16 additions & 0 deletions azure/container-linux/kubernetes/lb.tf
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Expand Up @@ -72,6 +72,7 @@ resource "azurerm_lb_rule" "ingress-http" {
name = "ingress-http"
loadbalancer_id = azurerm_lb.cluster.id
frontend_ip_configuration_name = "ingress"
disable_outbound_snat = true

protocol = "Tcp"
frontend_port = 80
Expand All @@ -86,6 +87,7 @@ resource "azurerm_lb_rule" "ingress-https" {
name = "ingress-https"
loadbalancer_id = azurerm_lb.cluster.id
frontend_ip_configuration_name = "ingress"
disable_outbound_snat = true

protocol = "Tcp"
frontend_port = 443
Expand All @@ -94,6 +96,20 @@ resource "azurerm_lb_rule" "ingress-https" {
probe_id = azurerm_lb_probe.ingress.id
}

# Worker outbound TCP/UDP SNAT
resource "azurerm_lb_outbound_rule" "worker-outbound" {
resource_group_name = azurerm_resource_group.cluster.name

name = "worker"
loadbalancer_id = azurerm_lb.cluster.id
frontend_ip_configuration {
name = "ingress"
}

protocol = "All"
backend_address_pool_id = azurerm_lb_backend_address_pool.worker.id
}

# Address pool of controllers
resource "azurerm_lb_backend_address_pool" "controller" {
resource_group_name = azurerm_resource_group.cluster.name
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