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af18296bc5
* Change flannel port from the kernel default 8472 to the IANA assigned VXLAN port 4789 * Update firewall rules or security groups for VXLAN * Why now? Calico now offers its own VXLAN backend so standardizing on the IANA port will simplify config * https://github.com/coreos/flannel/blob/master/Documentation/backends.md#vxlan
288 lines
12 KiB
HCL
288 lines
12 KiB
HCL
# Controller security group
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resource "azurerm_network_security_group" "controller" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "${var.cluster_name}-controller"
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location = "${azurerm_resource_group.cluster.location}"
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}
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resource "azurerm_network_security_rule" "controller-ssh" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-ssh"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2000"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "22"
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source_address_prefix = "*"
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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resource "azurerm_network_security_rule" "controller-etcd" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-etcd"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2005"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "2379-2380"
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source_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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# Allow Prometheus to scrape etcd metrics
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resource "azurerm_network_security_rule" "controller-etcd-metrics" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-etcd-metrics"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2010"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "2381"
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source_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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resource "azurerm_network_security_rule" "controller-apiserver" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-apiserver"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2015"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "6443"
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source_address_prefix = "*"
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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resource "azurerm_network_security_rule" "controller-vxlan" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-vxlan"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2020"
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access = "Allow"
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direction = "Inbound"
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protocol = "Udp"
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source_port_range = "*"
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destination_port_range = "4789"
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source_address_prefixes = ["${azurerm_subnet.controller.address_prefix}", "${azurerm_subnet.worker.address_prefix}"]
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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# Allow Prometheus to scrape node-exporter daemonset
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resource "azurerm_network_security_rule" "controller-node-exporter" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-node-exporter"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2025"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "9100"
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source_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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# Allow apiserver to access kubelet's for exec, log, port-forward
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resource "azurerm_network_security_rule" "controller-kubelet" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-kubelet"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "2030"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "10250"
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# allow Prometheus to scrape kubelet metrics too
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source_address_prefixes = ["${azurerm_subnet.controller.address_prefix}", "${azurerm_subnet.worker.address_prefix}"]
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destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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}
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# Override Azure AllowVNetInBound and AllowAzureLoadBalancerInBound
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# https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#default-security-rules
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resource "azurerm_network_security_rule" "controller-allow-loadblancer" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-loadbalancer"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "3000"
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access = "Allow"
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direction = "Inbound"
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protocol = "*"
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source_port_range = "*"
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destination_port_range = "*"
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source_address_prefix = "AzureLoadBalancer"
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destination_address_prefix = "*"
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}
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resource "azurerm_network_security_rule" "controller-deny-all" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "deny-all"
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network_security_group_name = "${azurerm_network_security_group.controller.name}"
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priority = "3005"
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access = "Deny"
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direction = "Inbound"
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protocol = "*"
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source_port_range = "*"
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destination_port_range = "*"
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source_address_prefix = "*"
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destination_address_prefix = "*"
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}
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# Worker security group
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resource "azurerm_network_security_group" "worker" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "${var.cluster_name}-worker"
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location = "${azurerm_resource_group.cluster.location}"
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}
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resource "azurerm_network_security_rule" "worker-ssh" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-ssh"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2000"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "22"
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source_address_prefix = "${azurerm_subnet.controller.address_prefix}"
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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resource "azurerm_network_security_rule" "worker-http" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-http"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2005"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "80"
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source_address_prefix = "*"
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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resource "azurerm_network_security_rule" "worker-https" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-https"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2010"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "443"
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source_address_prefix = "*"
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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resource "azurerm_network_security_rule" "worker-vxlan" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-vxlan"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2015"
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access = "Allow"
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direction = "Inbound"
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protocol = "Udp"
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source_port_range = "*"
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destination_port_range = "4789"
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source_address_prefixes = ["${azurerm_subnet.controller.address_prefix}", "${azurerm_subnet.worker.address_prefix}"]
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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# Allow Prometheus to scrape node-exporter daemonset
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resource "azurerm_network_security_rule" "worker-node-exporter" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-node-exporter"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2020"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "9100"
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source_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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# Allow apiserver to access kubelet's for exec, log, port-forward
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resource "azurerm_network_security_rule" "worker-kubelet" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-kubelet"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "2025"
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access = "Allow"
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direction = "Inbound"
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protocol = "Tcp"
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source_port_range = "*"
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destination_port_range = "10250"
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# allow Prometheus to scrape kubelet metrics too
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source_address_prefixes = ["${azurerm_subnet.controller.address_prefix}", "${azurerm_subnet.worker.address_prefix}"]
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destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
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}
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# Override Azure AllowVNetInBound and AllowAzureLoadBalancerInBound
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# https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#default-security-rules
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resource "azurerm_network_security_rule" "worker-allow-loadblancer" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "allow-loadbalancer"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "3000"
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access = "Allow"
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direction = "Inbound"
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protocol = "*"
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source_port_range = "*"
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destination_port_range = "*"
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source_address_prefix = "AzureLoadBalancer"
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destination_address_prefix = "*"
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}
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resource "azurerm_network_security_rule" "worker-deny-all" {
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resource_group_name = "${azurerm_resource_group.cluster.name}"
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name = "deny-all"
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network_security_group_name = "${azurerm_network_security_group.worker.name}"
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priority = "3005"
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access = "Deny"
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direction = "Inbound"
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protocol = "*"
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source_port_range = "*"
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destination_port_range = "*"
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source_address_prefix = "*"
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destination_address_prefix = "*"
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}
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