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k8s: use separate lb for K8s services on azure

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This commit is contained in:
Leonard Cohnen 2024-07-16 13:27:42 +02:00
parent 4573f10884
commit 63e263c6a5
3 changed files with 68 additions and 14 deletions
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2
internal/constellation/helm/overrides.go
View File

@ -243,7 +243,7 @@ func getCCMConfig(azureState state.Azure, serviceAccURI string) ([]byte, error)
ResourceGroup: azureState.ResourceGroup,
LoadBalancerSku: "standard",
SecurityGroupName: azureState.NetworkSecurityGroupName,
LoadBalancerName: azureState.LoadBalancerName,
LoadBalancerName: "kubernetes-lb",
UseInstanceMetadata: true,
VMType: "vmss",
Location: creds.Location,

77
terraform/infrastructure/azure/main.tf
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@ -33,7 +33,6 @@ locals {
{ name = "kubernetes", port = "6443", health_check_protocol = "Https", path = "/readyz", priority = 100 },
{ name = "bootstrapper", port = "9000", health_check_protocol = "Tcp", path = null, priority = 101 },
{ name = "verify", port = "30081", health_check_protocol = "Tcp", path = null, priority = 102 },
{ name = "konnectivity", port = "8132", health_check_protocol = "Tcp", path = null, priority = 103 },
{ name = "recovery", port = "9999", health_check_protocol = "Tcp", path = null, priority = 104 },
{ name = "join", port = "30090", health_check_protocol = "Tcp", path = null, priority = 105 },
var.debug ? [{ name = "debugd", port = "4000", health_check_protocol = "Tcp", path = null, priority = 106 }] : [],
@ -214,10 +213,13 @@ resource "azurerm_network_security_group" "security_group" {
tags = local.tags
dynamic "security_rule" {
for_each = concat(
local.ports,
[{ name = "nodeports", port = local.ports_node_range, priority = 200 }]
)
# we keep this rule for one last release since the azurerm provider does not
# support moving security rules that are inlined (like this) to the external resource one.
# Even worse, just defining the azurerm_network_security_group without the
# "security_rule" block will NOT remove all the rules but do nothing.
# TODO(@3u13r): remove the "security_rule" block in the next release after this code has landed.
# So either after 2.18 or after 2.17.X if cerry-picked release.
for_each = [{ name = "konnectivity", priority = 1000, port = 8132 }]
content {
name = security_rule.value.name
priority = security_rule.value.priority
@ -232,6 +234,28 @@ resource "azurerm_network_security_group" "security_group" {
}
}
resource "azurerm_network_security_rule" "nsg_rule" {
for_each = {
for o in concat(
local.ports,
[{ name = "nodeports", port = local.ports_node_range, priority = 200 }]
)
: o.name => o
}
name = each.value.name
priority = each.value.priority
direction = "Inbound"
access = "Allow"
protocol = "Tcp"
source_port_range = "*"
destination_port_range = each.value.port
source_address_prefix = "*"
destination_address_prefix = "*"
resource_group_name = var.resource_group
network_security_group_name = azurerm_network_security_group.security_group.name
}
module "scale_set_group" {
source = "./modules/scale_set"
for_each = var.node_groups
@ -257,13 +281,7 @@ module "scale_set_group" {
image_id = var.image_id
network_security_group_id = azurerm_network_security_group.security_group.id
subnet_id = azurerm_subnet.node_subnet.id
backend_address_pool_ids = each.value.role == "control-plane" ? [
azurerm_lb_backend_address_pool.all.id,
module.loadbalancer_backend_control_plane.backendpool_id
] : [
azurerm_lb_backend_address_pool.all.id,
module.loadbalancer_backend_worker.backendpool_id
]
backend_address_pool_ids = each.value.role == "control-plane" ? [module.loadbalancer_backend_control_plane.backendpool_id] : []
marketplace_image = var.marketplace_image
}
@ -286,3 +304,38 @@ data "azurerm_user_assigned_identity" "uaid" {
name = local.uai_name
resource_group_name = local.uai_resource_group
}
moved {
to = azurerm_network_security_rule.nsg_rule["nodeports"]
from = azurerm_network_security_group.security_group.security_rule["nodeports"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["kubernetes"]
from = azurerm_network_security_group.security_group.security_rule["kubernetes"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["bootstrapper"]
from = azurerm_network_security_group.security_group.security_rule["bootstrapper"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["verify"]
from = azurerm_network_security_group.security_group.security_rule["verify"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["recovery"]
from = azurerm_network_security_group.security_group.security_rule["recovery"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["join"]
from = azurerm_network_security_group.security_group.security_rule["join"]
}
moved {
to = azurerm_network_security_rule.nsg_rule["debugd"]
from = azurerm_network_security_group.security_group.security_rule["debugd"]
}

1
terraform/infrastructure/azure/modules/scale_set/main.tf
View File

@ -119,6 +119,7 @@ resource "azurerm_linux_virtual_machine_scale_set" "scale_set" {
instances, # required. autoscaling modifies the instance count externally
source_image_id, # required. update procedure modifies the image id externally
source_image_reference, # required. update procedure modifies the image reference externally
network_interface[0].ip_configuration[0].load_balancer_backend_address_pool_ids
]
}
}