Rename master to control-plane in docs and titles without break change

README.md

@@ -215,7 +215,7 @@ Note: Upstart/SysV init based OS types are not supported.
 Hardware:
 These limits are safeguarded by Kubespray. Actual requirements for your workload can differ. For a sizing guide go to the [Building Large Clusters](https://kubernetes.io/docs/setup/cluster-large/#size-of-master-and-master-components) guide.
 
-- Master
+- Control Plane
   - Memory: 1500 MB
 - Node
   - Memory: 1024 MB

Vagrantfile

@@ -64,7 +64,7 @@ $download_run_once ||= "True"
 $download_force_cache ||= "False"
 # The first three nodes are etcd servers
 $etcd_instances ||= [$num_instances, 3].min
-# The first two nodes are kube masters
+# The first two nodes are kube control planes
 $kube_master_instances ||= [$num_instances, 2].min
 # All nodes are kube nodes
 $kube_node_instances ||= $num_instances

contrib/azurerm/README.md

@@ -23,7 +23,7 @@ experience.
 ## Bastion host
 
 You can enable the use of a Bastion Host by changing **use_bastion** in group_vars/all to **true**. The generated
-templates will then include an additional bastion VM which can then be used to connect to the masters and nodes. The option
+templates will then include an additional bastion VM which can then be used to connect to the control planes and nodes. The option
 also removes all public IPs from all other VMs.
 
 ## Generating and applying

contrib/azurerm/group_vars/all

@@ -3,8 +3,8 @@
 # this name must be globally unique - it will be used as a prefix for azure components
 cluster_name: example
 
-# Set this to true if you do not want to have public IPs for your masters and minions. This will provision a bastion
-# node that can be used to access the masters and minions
+# Set this to true if you do not want to have public IPs for your control planes and minions. This will provision a bastion
+# node that can be used to access the control planes and minions
 use_bastion: false
 
 # Set this to a preferred name that will be used as the first part of the dns name for your bastotion host. For example: k8s-bastion.<azureregion>.cloudapp.azure.com.

contrib/dind/README.md

@@ -104,12 +104,12 @@ CONTAINER ID        IMAGE               COMMAND CREATED             STATUS
 c581ef662ed2        debian:9.5          "sh -c 'apt-get -qy …"   44 minutes ago      Up 44 minutes                           kube-node1
 
 $ docker exec kube-node1 kubectl get node
-NAME         STATUS   ROLES         AGE   VERSION
-kube-node1   Ready    master,node   18m   v1.12.1
-kube-node2   Ready    master,node   17m   v1.12.1
-kube-node3   Ready    node          17m   v1.12.1
-kube-node4   Ready    node          17m   v1.12.1
-kube-node5   Ready    node          17m   v1.12.1
+NAME         STATUS   ROLES                AGE   VERSION
+kube-node1   Ready    control-plane,node   18m   v1.12.1
+kube-node2   Ready    control-plane,node   17m   v1.12.1
+kube-node3   Ready    node                 17m   v1.12.1
+kube-node4   Ready    node                 17m   v1.12.1
+kube-node5   Ready    node                 17m   v1.12.1
 
 $ docker exec kube-node1 kubectl get pod --all-namespaces
 NAMESPACE     NAME                                    READY   STATUS    RESTARTS   AGE

contrib/network-storage/glusterfs/README.md

@@ -4,7 +4,7 @@ You can either deploy using Ansible on its own by supplying your own inventory f
 
 ## Using an Ansible inventory
 
-In the same directory of this ReadMe file you should find a file named `inventory.example` which contains an example setup. Please note that, additionally to the Kubernetes nodes/masters, we define a set of machines for GlusterFS and we add them to the group `[gfs-cluster]`, which in turn is added to the larger `[network-storage]` group as a child group.
+In the same directory of this ReadMe file you should find a file named `inventory.example` which contains an example setup. Please note that, additionally to the Kubernetes nodes/control-planes, we define a set of machines for GlusterFS and we add them to the group `[gfs-cluster]`, which in turn is added to the larger `[network-storage]` group as a child group.
 
 Change that file to reflect your local setup (adding more machines or removing them and setting the adequate ip numbers), and save it to `inventory/sample/k8s_gfs_inventory`. Make sure that the settings on `inventory/sample/group_vars/all.yml` make sense with your deployment. Then execute change to the kubespray root folder, and execute (supposing that the machines are all using ubuntu):
 
@@ -21,9 +21,9 @@ ansible-playbook -b --become-user=root -i inventory/sample/k8s_gfs_inventory --u
 If your machines are not using Ubuntu, you need to change the `--user=ubuntu` to the correct user. Alternatively, if your Kubernetes machines are using one OS and your GlusterFS a different one, you can instead specify the `ansible_ssh_user=<correct-user>` variable in the inventory file that you just created, for each machine/VM:
 
 ```shell
-k8s-master-1 ansible_ssh_host=192.168.0.147 ip=192.168.0.147 ansible_ssh_user=core
-k8s-master-node-1 ansible_ssh_host=192.168.0.148 ip=192.168.0.148 ansible_ssh_user=core
-k8s-master-node-2 ansible_ssh_host=192.168.0.146 ip=192.168.0.146 ansible_ssh_user=core
+k8s-control-plane-1 ansible_ssh_host=192.168.0.147 ip=192.168.0.147 ansible_ssh_user=core
+k8s-control-plane-node-1 ansible_ssh_host=192.168.0.148 ip=192.168.0.148 ansible_ssh_user=core
+k8s-control-plane-node-2 ansible_ssh_host=192.168.0.146 ip=192.168.0.146 ansible_ssh_user=core
 ```
 
 ## Using Terraform and Ansible

contrib/terraform/aws/create-infrastructure.tf

@@ -68,7 +68,7 @@ resource "aws_instance" "bastion-server" {
 }
 
 /*
-* Create K8s Master and worker nodes and etcd instances
+* Create K8s control plane and worker nodes and etcd instances
 *
 */
 

contrib/terraform/aws/variables.tf

@@ -86,15 +86,15 @@ variable "aws_bastion_num" {
 }
 
 variable "aws_kube_master_num" {
-  description = "Number of Kubernetes Master Nodes"
+  description = "Number of Kubernetes Control Plane Nodes"
 }
 
 variable "aws_kube_master_disk_size" {
-  description = "Disk size for Kubernetes Master Nodes (in GiB)"
+  description = "Disk size for Kubernetes Control Plane Nodes (in GiB)"
 }
 
 variable "aws_kube_master_size" {
-  description = "Instance size of Kube Master Nodes"
+  description = "Instance size of Kube Control Plane Nodes"
 }
 
 variable "aws_etcd_num" {

contrib/terraform/equinix/README.md

@@ -20,15 +20,15 @@ to actually install Kubernetes with Kubespray.
 You can create many different kubernetes topologies by setting the number of
 different classes of hosts.
 
-- Master nodes with etcd: `number_of_k8s_masters` variable
-- Master nodes without etcd: `number_of_k8s_masters_no_etcd` variable
+- Control plane nodes with etcd: `number_of_k8s_masters` variable
+- Control plane nodes without etcd: `number_of_k8s_masters_no_etcd` variable
 - Standalone etcd hosts: `number_of_etcd` variable
 - Kubernetes worker nodes: `number_of_k8s_nodes` variable
 
 Note that the Ansible script will report an invalid configuration if you wind up
 with an *even number* of etcd instances since that is not a valid configuration. This
 restriction includes standalone etcd nodes that are deployed in a cluster along with
-master nodes with etcd replicas. As an example, if you have three master nodes with
+master nodes with etcd replicas. As an example, if you have three control plane nodes with
 etcd replicas and three standalone etcd nodes, the script will fail since there are
 now six total etcd replicas.
 

contrib/terraform/equinix/sample-inventory/cluster.tfvars

@@ -20,7 +20,7 @@ number_of_etcd = 0
 
 plan_etcd = "t1.small.x86"
 
-# masters
+# control planes
 number_of_k8s_masters = 1
 
 number_of_k8s_masters_no_etcd = 0

contrib/terraform/gcp/generate-inventory.sh

@@ -33,7 +33,7 @@ mapfile -t WORKER_NAMES < <(jq -r '.key'  <(echo "${WORKERS}"))
 
 API_LB=$(jq -r '.control_plane_lb_ip_address.value' <(echo "${TF_OUT}"))
 
-# Generate master hosts
+# Generate control plane hosts
 i=1
 for name in "${MASTER_NAMES[@]}"; do
   private_ip=$(jq -r '. | select( .key=='"\"${name}\""' ) | .value.private_ip'  <(echo "${MASTERS}"))

contrib/terraform/openstack/README.md

@@ -60,15 +60,15 @@ You can create many different kubernetes topologies by setting the number of
 different classes of hosts. For each class there are options for allocating
 floating IP addresses or not.
 
-- Master nodes with etcd
-- Master nodes without etcd
+- Control Plane nodes with etcd
+- Control Plane nodes without etcd
 - Standalone etcd hosts
 - Kubernetes worker nodes
 
 Note that the Ansible script will report an invalid configuration if you wind up
 with an even number of etcd instances since that is not a valid configuration. This
 restriction includes standalone etcd nodes that are deployed in a cluster along with
-master nodes with etcd replicas. As an example, if you have three master nodes with
+control plane nodes with etcd replicas. As an example, if you have three control plane nodes with
 etcd replicas and three standalone etcd nodes, the script will fail since there are
 now six total etcd replicas.
 
@@ -254,15 +254,15 @@ For your cluster, edit `inventory/$CLUSTER/cluster.tfvars`.
 |`network_dns_domain` | (Optional) The dns_domain for the internal network that will be generated |
 |`dns_nameservers`| An array of DNS name server names to be used by hosts in the internal subnet. |
 |`floatingip_pool` | Name of the pool from which floating IPs will be allocated |
-|`k8s_master_fips` | A list of floating IPs that you have already pre-allocated; they will be attached to master nodes instead of creating new random floating IPs. |
+|`k8s_master_fips` | A list of floating IPs that you have already pre-allocated; they will be attached to control plane nodes instead of creating new random floating IPs. |
 |`bastion_fips` | A list of floating IPs that you have already pre-allocated; they will be attached to bastion node instead of creating new random floating IPs. |
 |`external_net` | UUID of the external network that will be routed to |
 |`flavor_k8s_master`,`flavor_k8s_node`,`flavor_etcd`, `flavor_bastion`,`flavor_gfs_node` | Flavor depends on your openstack installation, you can get available flavor IDs through `openstack flavor list` |
 |`image`,`image_gfs` | Name of the image to use in provisioning the compute resources. Should already be loaded into glance. |
 |`ssh_user`,`ssh_user_gfs` | The username to ssh into the image with. This usually depends on the image you have selected |
 |`public_key_path` | Path on your local workstation to the public key file you wish to use in creating the key pairs |
-|`number_of_k8s_masters`, `number_of_k8s_masters_no_floating_ip` | Number of nodes that serve as both master and etcd. These can be provisioned with or without floating IP addresses|
-|`number_of_k8s_masters_no_etcd`, `number_of_k8s_masters_no_floating_ip_no_etcd` |  Number of nodes that serve as just master with no etcd. These can be provisioned with or without floating IP addresses |
+|`number_of_k8s_masters`, `number_of_k8s_masters_no_floating_ip` | Number of nodes that serve as both control plane and etcd. These can be provisioned with or without floating IP addresses|
+|`number_of_k8s_masters_no_etcd`, `number_of_k8s_masters_no_floating_ip_no_etcd` |  Number of nodes that serve as just control plane with no etcd. These can be provisioned with or without floating IP addresses |
 |`number_of_etcd` | Number of pure etcd nodes |
 |`number_of_k8s_nodes`, `number_of_k8s_nodes_no_floating_ip` | Kubernetes worker nodes. These can be provisioned with or without floating ip addresses. |
 |`number_of_bastions` | Number of bastion hosts to create. Scripts assume this is really just zero or one |
@@ -281,25 +281,25 @@ For your cluster, edit `inventory/$CLUSTER/cluster.tfvars`.
 |`k8s_allowed_egress_ipv6_ips` | List of IPv6 CIDRs allowed for egress traffic, `["::/0"]` by default |
 |`worker_allowed_ports` | List of ports to open on worker nodes, `[{ "protocol" = "tcp", "port_range_min" = 30000, "port_range_max" = 32767, "remote_ip_prefix" = "0.0.0.0/0"}]` by default |
 |`worker_allowed_ports_ipv6` | List of ports to open on worker nodes for IPv6 CIDR blocks, `[{ "protocol" = "tcp", "port_range_min" = 30000, "port_range_max" = 32767, "remote_ip_prefix" = "::/0"}]` by default |
-|`master_allowed_ports` | List of ports to open on master nodes, expected format is `[{ "protocol" = "tcp", "port_range_min" = 443, "port_range_max" = 443, "remote_ip_prefix" = "0.0.0.0/0"}]`, empty by default |
-|`master_allowed_ports_ipv6` | List of ports to open on master nodes for IPv6 CIDR blocks, expected format is `[{ "protocol" = "tcp", "port_range_min" = 443, "port_range_max" = 443, "remote_ip_prefix" = "::/0"}]`, empty by default |
+|`master_allowed_ports` | List of ports to open on control plane nodes, expected format is `[{ "protocol" = "tcp", "port_range_min" = 443, "port_range_max" = 443, "remote_ip_prefix" = "0.0.0.0/0"}]`, empty by default |
+|`master_allowed_ports_ipv6` | List of ports to open on control plane nodes for IPv6 CIDR blocks, expected format is `[{ "protocol" = "tcp", "port_range_min" = 443, "port_range_max" = 443, "remote_ip_prefix" = "::/0"}]`, empty by default |
 |`node_root_volume_size_in_gb` | Size of the root volume for nodes, 0 to use ephemeral storage |
 |`master_root_volume_size_in_gb` | Size of the root volume for masters, 0 to use ephemeral storage |
 |`master_volume_type` | Volume type of the root volume for control_plane, 'Default' by default |
 |`node_volume_type` | Volume type of the root volume for nodes, 'Default' by default |
 |`gfs_root_volume_size_in_gb` | Size of the root volume for gluster, 0 to use ephemeral storage |
 |`etcd_root_volume_size_in_gb` | Size of the root volume for etcd nodes, 0 to use ephemeral storage |
 |`bastion_root_volume_size_in_gb` | Size of the root volume for bastions, 0 to use ephemeral storage |
-|`master_server_group_policy` | Enable and use openstack nova servergroups for masters with set policy, default: "" (disabled) |
+|`master_server_group_policy` | Enable and use openstack nova servergroups for control planes with set policy, default: "" (disabled) |
 |`node_server_group_policy` | Enable and use openstack nova servergroups for nodes with set policy, default: "" (disabled) |
 |`etcd_server_group_policy` | Enable and use openstack nova servergroups for etcd with set policy, default: "" (disabled) |
 |`additional_server_groups` | Extra server groups to create. Set "policy" to the policy for the group, expected format is `{"new-server-group" = {"policy" = "anti-affinity"}}`, default: {} (to not create any extra groups) |
 |`use_access_ip` | If 1, nodes with floating IPs will transmit internal cluster traffic via floating IPs; if 0 private IPs will be used instead. Default value is 1. |
 |`port_security_enabled` | Allow to disable port security by setting this to `false`. `true` by default |
 |`force_null_port_security` | Set `null` instead of `true` or `false` for `port_security`. `false` by default |
 |`k8s_nodes` | Map containing worker node definition, see explanation below |
-|`k8s_masters` | Map containing master node definition, see explanation for k8s_nodes and `sample-inventory/cluster.tfvars` |
-| `k8s_master_loadbalancer_enabled`| Enable and use an Octavia load balancer for the K8s master nodes |
+|`k8s_masters` | Map containing control plane node definition, see explanation for k8s_nodes and `sample-inventory/cluster.tfvars` |
+| `k8s_master_loadbalancer_enabled`| Enable and use an Octavia load balancer for the K8s control plane nodes |
 | `k8s_master_loadbalancer_listener_port` | Define via which port the K8s Api should be exposed. `6443` by default  |
 | `k8s_master_loadbalancer_server_port` | Define via which port the K8S api is available on the mas. `6443` by default |
 | `k8s_master_loadbalancer_public_ip` | Specify if an existing floating IP should be used for the load balancer. A new floating IP is assigned by default  |
@@ -656,7 +656,7 @@ This will take some time as there are many tasks to run.
 ### Set up kubectl
 
 1. [Install kubectl](https://kubernetes.io/docs/tasks/tools/install-kubectl/) on your workstation
-2. Add a route to the internal IP of a master node (if needed):
+2. Add a route to the internal IP of a control plane node (if needed):
 
 ```ShellSession
 sudo route add [master-internal-ip] gw [router-ip]

contrib/terraform/openstack/modules/compute/main.tf

@@ -44,7 +44,7 @@ resource "openstack_networking_secgroup_v2" "k8s_master" {
 resource "openstack_networking_secgroup_v2" "k8s_master_extra" {
   count                = "%{if var.extra_sec_groups}1%{else}0%{endif}"
   name                 = "${var.cluster_name}-k8s-master-${var.extra_sec_groups_name}"
-  description          = "${var.cluster_name} - Kubernetes Master nodes - rules not managed by terraform"
+  description          = "${var.cluster_name} - Kubernetes Control Plane nodes - rules not managed by terraform"
   delete_default_rules = true
 }
 
@@ -269,7 +269,7 @@ resource "openstack_compute_servergroup_v2" "k8s_node_additional" {
 }
 
 locals {
-# master groups
+# control plane groups
   master_sec_groups = compact([
     openstack_networking_secgroup_v2.k8s_master.id,
     openstack_networking_secgroup_v2.k8s.id,

contrib/terraform/openstack/sample-inventory/cluster.tfvars

@@ -7,7 +7,7 @@ cluster_name = "i-didnt-read-the-docs"
 # SSH key to use for access to nodes
 public_key_path = "~/.ssh/id_rsa.pub"
 
-# image to use for bastion, masters, standalone etcd instances, and nodes
+# image to use for bastion, control planes, standalone etcd instances, and nodes
 image = "<image name>"
 
 # user on the node (ex. core on Container Linux, ubuntu on Ubuntu, etc.)
@@ -21,7 +21,7 @@ number_of_bastions = 0
 # standalone etcds
 number_of_etcd = 0
 
-# masters
+# control planes
 number_of_k8s_masters = 1
 
 number_of_k8s_masters_no_etcd = 0

contrib/terraform/openstack/variables.tf

@@ -3,7 +3,7 @@ variable "cluster_name" {
 }
 
 variable "az_list" {
-  description = "List of Availability Zones to use for masters in your OpenStack cluster"
+  description = "List of Availability Zones to use for control planes in your OpenStack cluster"
   type        = list(string)
   default     = ["nova"]
 }
@@ -179,7 +179,7 @@ variable "dns_nameservers" {
 }
 
 variable "k8s_master_fips" {
-  description = "specific pre-existing floating IPs to use for master nodes"
+  description = "specific pre-existing floating IPs to use for control plane nodes"
   type        = list(string)
   default     = []
 }
@@ -380,7 +380,7 @@ variable "image_master" {
 }
 
 variable "image_master_uuid" {
-  description = "uuid of image to be used on master nodes. If empty defaults to image_uuid"
+  description = "uuid of image to be used on control plane nodes. If empty defaults to image_uuid"
   default     = ""
 }
 

contrib/terraform/upcloud/modules/kubernetes-cluster/main.tf

@@ -173,7 +173,7 @@ resource "upcloud_firewall_rules" "master" {
 
     content {
       action                 = "accept"
-      comment                = "Allow master API access from this network"
+      comment                = "Allow control plane API access from this network"
       destination_port_end   = "6443"
       destination_port_start = "6443"
       direction              = "in"
@@ -189,7 +189,7 @@ resource "upcloud_firewall_rules" "master" {
 
     content {
       action                 = "drop"
-      comment                = "Deny master API access from other networks"
+      comment                = "Deny control plane API access from other networks"
       destination_port_end   = "6443"
       destination_port_start = "6443"
       direction              = "in"

contrib/terraform/vsphere/README.md

@@ -116,9 +116,9 @@ ansible-playbook -i inventory.ini ../../cluster.yml -b -v
 * `dns_secondary`: The IP address of secondary DNS server (default: `8.8.8.8`)
 * `firmware`: Firmware to use (default: `bios`)
 * `hardware_version`: The version of the hardware (default: `15`)
-* `master_cores`: The number of CPU cores for the master nodes (default: 4)
-* `master_memory`: The amount of RAM for the master nodes in MB (default: 4096)
-* `master_disk_size`: The amount of disk space for the master nodes in GB (default: 20)
+* `master_cores`: The number of CPU cores for the control plane nodes (default: 4)
+* `master_memory`: The amount of RAM for the control plane nodes in MB (default: 4096)
+* `master_disk_size`: The amount of disk space for the control plane nodes in GB (default: 20)
 * `worker_cores`: The number of CPU cores for the worker nodes (default: 16)
 * `worker_memory`: The amount of RAM for the worker nodes in MB (default: 8192)
 * `worker_disk_size`: The amount of disk space for the worker nodes in GB (default: 100)

contrib/terraform/vsphere/main.tf

@@ -45,7 +45,7 @@ module "kubernetes" {
 
   machines = var.machines
 
-  ## Master ##
+  ## Control Plane ##
   master_cores     = var.master_cores
   master_memory    = var.master_memory
   master_disk_size = var.master_disk_size