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Disable Kubelet read-only port 10255

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* We can finally disable the Kubelet read-only port 10255!
* Journey: https://github.com/poseidon/typhoon/issues/322#issuecomment-431073073
This commit is contained in:
Dalton Hubble
2018-05-13 18:16:10 -07:00
parent bc750aec33
commit 99a6d5478b
24 changed files with 19 additions and 144 deletions
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1
azure/container-linux/kubernetes/cl/controller.yaml.tmpl
View File

@ -88,6 +88,7 @@ systemd:
--node-labels=node-role.kubernetes.io/master \
--node-labels=node-role.kubernetes.io/controller="true" \
--pod-manifest-path=/etc/kubernetes/manifests \
--read-only-port=0 \
--register-with-taints=node-role.kubernetes.io/master=:NoSchedule \
--volume-plugin-dir=/var/lib/kubelet/volumeplugins
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid

32
azure/container-linux/kubernetes/security.tf
View File

@ -117,22 +117,6 @@ resource "azurerm_network_security_rule" "controller-kubelet" {
destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
}
# Allow heapster / metrics-server to scrape kubelet read-only
resource "azurerm_network_security_rule" "controller-kubelet-read" {
resource_group_name = "${azurerm_resource_group.cluster.name}"
name = "allow-kubelet-read"
network_security_group_name = "${azurerm_network_security_group.controller.name}"
priority = "2035"
access = "Allow"
direction = "Inbound"
protocol = "Tcp"
source_port_range = "*"
destination_port_range = "10255"
source_address_prefix = "${azurerm_subnet.worker.address_prefix}"
destination_address_prefix = "${azurerm_subnet.controller.address_prefix}"
}
# Override Azure AllowVNetInBound and AllowAzureLoadBalancerInBound
# https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#default-security-rules
@ -269,22 +253,6 @@ resource "azurerm_network_security_rule" "worker-kubelet" {
destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
}
# Allow heapster / metrics-server to scrape kubelet read-only
resource "azurerm_network_security_rule" "worker-kubelet-read" {
resource_group_name = "${azurerm_resource_group.cluster.name}"
name = "allow-kubelet-read"
network_security_group_name = "${azurerm_network_security_group.worker.name}"
priority = "2030"
access = "Allow"
direction = "Inbound"
protocol = "Tcp"
source_port_range = "*"
destination_port_range = "10255"
source_address_prefix = "${azurerm_subnet.worker.address_prefix}"
destination_address_prefix = "${azurerm_subnet.worker.address_prefix}"
}
# Override Azure AllowVNetInBound and AllowAzureLoadBalancerInBound
# https://docs.microsoft.com/en-us/azure/virtual-network/security-overview#default-security-rules

1
azure/container-linux/kubernetes/workers/cl/worker.yaml.tmpl
View File

@ -60,6 +60,7 @@ systemd:
--network-plugin=cni \
--node-labels=node-role.kubernetes.io/node \
--pod-manifest-path=/etc/kubernetes/manifests \
--read-only-port=0 \
--volume-plugin-dir=/var/lib/kubelet/volumeplugins
ExecStop=-/usr/bin/rkt stop --uuid-file=/var/cache/kubelet-pod.uuid
Restart=always