kubespray/roles/kubernetes/master/defaults/main.yml

---
# An experimental dev/test only dynamic volumes provisioner,
# for PetSets. Works for kube>=v1.3 only.
kube_hostpath_dynamic_provisioner: "false"

# change to 0.0.0.0 to enable insecure access from anywhere (not recommended)
kube_apiserver_insecure_bind_address: 127.0.0.1

# By default the external API listens on all interfaces, this can be changed to
# listen on a specific address/interface.
kube_apiserver_bind_address: 0.0.0.0

# A port range to reserve for services with NodePort visibility.
# Inclusive at both ends of the range.
kube_apiserver_node_port_range: "30000-32767"

# ETCD cert dir for connecting apiserver to etcd
etcd_config_dir: /etc/ssl/etcd
etcd_cert_dir: "{{ etcd_config_dir }}/ssl"

# ETCD backend for k8s data
kube_apiserver_storage_backend: etcd3

# By default, force back to etcd2. Set to true to force etcd3 (experimental!)
force_etcd3: false

# Limits for kube components
kube_controller_memory_limit: 512M
kube_controller_cpu_limit: 250m
kube_controller_memory_requests: 100M
kube_controller_cpu_requests: 100m
kube_controller_node_monitor_grace_period: 40s
kube_controller_node_monitor_period: 5s
kube_controller_pod_eviction_timeout: 5m0s
kube_scheduler_memory_limit: 512M
kube_scheduler_cpu_limit: 250m
kube_scheduler_memory_requests: 170M
kube_scheduler_cpu_requests: 80m
kube_apiserver_memory_limit: 2000M
kube_apiserver_cpu_limit: 800m
kube_apiserver_memory_requests: 256M
kube_apiserver_cpu_requests: 100m

# Admission control plug-ins
kube_apiserver_admission_control:
  - Initializers
  - NamespaceLifecycle
  - LimitRanger
  - ServiceAccount
  - DefaultStorageClass
  - >-
      {%- if kube_version | version_compare('v1.9', '<') -%}
      GenericAdmissionWebhook
      {%- else -%}
      ValidatingAdmissionWebhook
      {%- endif -%}
  - ResourceQuota

# extra runtime config
kube_api_runtime_config:
  - admissionregistration.k8s.io/v1alpha1

## Enable/Disable Kube API Server Authentication Methods
kube_basic_auth: false
kube_token_auth: false
kube_oidc_auth: false

## Variables for OpenID Connect Configuration https://kubernetes.io/docs/admin/authentication/
## To use OpenID you have to deploy additional an OpenID Provider (e.g Dex, Keycloak, ...)

# kube_oidc_url: https:// ...
# kube_oidc_client_id: kubernetes
## Optional settings for OIDC
# kube_oidc_ca_file: {{ kube_cert_dir }}/ca.pem
# kube_oidc_username_claim: sub
# kube_oidc_groups_claim: groups

## Variables for custom flags
apiserver_custom_flags: []

# List of the preferred NodeAddressTypes to use for kubelet connections.
kubelet_preferred_address_types: 'InternalDNS,InternalIP,Hostname,ExternalDNS,ExternalIP'

controller_mgr_custom_flags: []

scheduler_custom_flags: []

## Extra args for k8s components passing by kubeadm
kube_kubeadm_apiserver_extra_args: {}
kube_kubeadm_controller_extra_args: {}
kube_kubeadm_scheduler_extra_args: {}

## Variable for influencing kube-scheduler behaviour
volume_cross_zone_attachment: false

## Encrypting Secret Data at Rest
kube_encrypt_secret_data: false
kube_encrypt_token: "{{ lookup('password', inventory_dir + '/credentials/kube_encrypt_token length=32 chars=ascii_letters,digits') }}"
kube_encryption_algorithm: "aescbc" # Must be either: aescbc, secretbox or aesgcm