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oke-security-lists.tf
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## Copyright (c) 2022, Oracle and/or its affiliates.
## All rights reserved. The Universal Permissive License (UPL), Version 1.0 as shown at http://oss.oracle.com/licenses/upl
resource "oci_core_security_list" "oke_nodes_security_list" {
compartment_id = local.oke_compartment_id
display_name = "oke-nodes-wkr-seclist-${random_string.deploy_id.result}"
vcn_id = oci_core_virtual_network.oke_vcn[0].id
# Ingresses
ingress_security_rules {
description = "Allow pods on one worker node to communicate with pods on other worker nodes"
source = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.all_protocols
stateless = false
}
ingress_security_rules {
description = "Inbound SSH traffic to worker nodes"
source = lookup(var.network_cidrs, (var.cluster_workers_visibility == "Private") ? "VCN-CIDR" : "ALL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.ssh_port_number
min = local.ssh_port_number
}
}
ingress_security_rules {
description = "TCP access from Kubernetes Control Plane"
source = lookup(var.network_cidrs, "ENDPOINT-SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
}
ingress_security_rules {
description = "Path discovery"
source = lookup(var.network_cidrs, "ENDPOINT-SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.icmp_protocol_number
stateless = false
icmp_options {
type = "3"
code = "4"
}
}
# Egresses
egress_security_rules {
description = "Allow pods on one worker node to communicate with pods on other worker nodes"
destination = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.all_protocols
stateless = false
}
egress_security_rules {
description = "Worker Nodes access to Internet"
destination = lookup(var.network_cidrs, "ALL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.all_protocols
stateless = false
}
egress_security_rules {
description = "Allow nodes to communicate with OKE to ensure correct start-up and continued functioning"
destination = lookup(data.oci_core_services.all_services.services[0], "cidr_block")
destination_type = "SERVICE_CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.https_port_number
min = local.https_port_number
}
}
egress_security_rules {
description = "ICMP Access from Kubernetes Control Plane"
destination = lookup(var.network_cidrs, "ALL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.icmp_protocol_number
stateless = false
icmp_options {
type = "3"
code = "4"
}
}
egress_security_rules {
description = "Access to Kubernetes API Endpoint"
destination = lookup(var.network_cidrs, "ENDPOINT-SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.k8s_api_endpoint_port_number
min = local.k8s_api_endpoint_port_number
}
}
egress_security_rules {
description = "Kubernetes worker to control plane communication"
destination = lookup(var.network_cidrs, "ENDPOINT-SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.k8s_worker_to_control_plane_port_number
min = local.k8s_worker_to_control_plane_port_number
}
}
egress_security_rules {
description = "Path discovery"
destination = lookup(var.network_cidrs, "ENDPOINT-SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.icmp_protocol_number
stateless = false
icmp_options {
type = "3"
code = "4"
}
}
defined_tags = { "${oci_identity_tag_namespace.ArchitectureCenterTagNamespace.name}.${oci_identity_tag.ArchitectureCenterTag.name}" = var.release }
count = var.create_new_oke_cluster ? 1 : 0
}
resource "oci_core_security_list" "oke_lb_security_list" {
compartment_id = local.oke_compartment_id
display_name = "oke-lb-seclist-${random_string.deploy_id.result}"
vcn_id = oci_core_virtual_network.oke_vcn[0].id
defined_tags = { "${oci_identity_tag_namespace.ArchitectureCenterTagNamespace.name}.${oci_identity_tag.ArchitectureCenterTag.name}" = var.release }
count = var.create_new_oke_cluster ? 1 : 0
}
resource "oci_core_security_list" "oke_endpoint_security_list" {
compartment_id = local.oke_compartment_id
display_name = "oke-k8s-api-endpoint-seclist-${random_string.deploy_id.result}"
vcn_id = oci_core_virtual_network.oke_vcn[0].id
# Ingresses
ingress_security_rules {
description = "External access to Kubernetes API endpoint"
source = lookup(var.network_cidrs, (var.cluster_endpoint_visibility == "Private") ? "VCN-CIDR" : "ALL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.k8s_api_endpoint_port_number
min = local.k8s_api_endpoint_port_number
}
}
ingress_security_rules {
description = "Kubernetes worker to Kubernetes API endpoint communication"
source = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.k8s_api_endpoint_port_number
min = local.k8s_api_endpoint_port_number
}
}
ingress_security_rules {
description = "Kubernetes worker to control plane communication"
source = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.k8s_worker_to_control_plane_port_number
min = local.k8s_worker_to_control_plane_port_number
}
}
ingress_security_rules {
description = "Path discovery"
source = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
source_type = "CIDR_BLOCK"
protocol = local.icmp_protocol_number
stateless = false
icmp_options {
type = "3"
code = "4"
}
}
# Egresses
egress_security_rules {
description = "Allow Kubernetes Control Plane to communicate with OKE"
destination = lookup(data.oci_core_services.all_services.services[0], "cidr_block")
destination_type = "SERVICE_CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
tcp_options {
max = local.https_port_number
min = local.https_port_number
}
}
egress_security_rules {
description = "All traffic to worker nodes"
destination = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.tcp_protocol_number
stateless = false
}
egress_security_rules {
description = "Path discovery"
destination = lookup(var.network_cidrs, "SUBNET-REGIONAL-CIDR")
destination_type = "CIDR_BLOCK"
protocol = local.icmp_protocol_number
stateless = false
icmp_options {
type = "3"
code = "4"
}
}
defined_tags = { "${oci_identity_tag_namespace.ArchitectureCenterTagNamespace.name}.${oci_identity_tag.ArchitectureCenterTag.name}" = var.release }
count = var.create_new_oke_cluster ? 1 : 0
}
locals {
http_port_number = "80"
https_port_number = "443"
k8s_api_endpoint_port_number = "6443"
k8s_worker_to_control_plane_port_number = "12250"
ssh_port_number = "22"
tcp_protocol_number = "6"
icmp_protocol_number = "1"
all_protocols = "all"
}