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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
99 lines
2.4 KiB
HCL
99 lines
2.4 KiB
HCL
resource "digitalocean_firewall" "rules" {
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name = "${var.cluster_name}"
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tags = ["${var.cluster_name}-controller", "${var.cluster_name}-worker"]
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# allow ssh, internal flannel, internal node-exporter, internal kubelet
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inbound_rule = [
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{
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protocol = "tcp"
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port_range = "22"
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source_addresses = ["0.0.0.0/0", "::/0"]
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},
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{
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protocol = "udp"
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port_range = "4789"
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source_tags = ["${digitalocean_tag.controllers.name}", "${digitalocean_tag.workers.name}"]
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},
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{
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protocol = "tcp"
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port_range = "9100"
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source_tags = ["${digitalocean_tag.workers.name}"]
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},
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{
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protocol = "tcp"
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port_range = "10250"
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source_tags = ["${digitalocean_tag.controllers.name}", "${digitalocean_tag.workers.name}"]
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},
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]
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# allow all outbound traffic
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outbound_rule = [
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{
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protocol = "tcp"
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port_range = "1-65535"
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destination_addresses = ["0.0.0.0/0", "::/0"]
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},
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{
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protocol = "udp"
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port_range = "1-65535"
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destination_addresses = ["0.0.0.0/0", "::/0"]
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},
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{
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protocol = "icmp"
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port_range = "1-65535"
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destination_addresses = ["0.0.0.0/0", "::/0"]
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},
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]
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}
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resource "digitalocean_firewall" "controllers" {
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name = "${var.cluster_name}-controllers"
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tags = ["${var.cluster_name}-controller"]
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# etcd, kube-apiserver, kubelet
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inbound_rule = [
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{
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protocol = "tcp"
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port_range = "2379-2380"
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source_tags = ["${digitalocean_tag.controllers.name}"]
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},
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{
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protocol = "tcp"
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port_range = "2381"
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source_tags = ["${digitalocean_tag.workers.name}"]
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},
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{
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protocol = "tcp"
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port_range = "6443"
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source_addresses = ["0.0.0.0/0", "::/0"]
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},
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]
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}
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resource "digitalocean_firewall" "workers" {
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name = "${var.cluster_name}-workers"
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tags = ["${var.cluster_name}-worker"]
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# allow HTTP/HTTPS ingress
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inbound_rule = [
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{
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protocol = "tcp"
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port_range = "80"
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source_addresses = ["0.0.0.0/0", "::/0"]
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},
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{
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protocol = "tcp"
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port_range = "443"
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source_addresses = ["0.0.0.0/0", "::/0"]
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},
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{
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protocol = "tcp"
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port_range = "10254"
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source_addresses = ["0.0.0.0/0"]
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},
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]
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}
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