kubespray/roles/kubespray-defaults/defaults/main.yaml

---
# Use proxycommand if bastion host is in group all
# This change obseletes editing ansible.cfg file depending on bastion existence
ansible_ssh_common_args: "{% if 'bastion' in groups['all'] %} -o ProxyCommand='ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no -W %h:%p {{ hostvars['bastion']['ansible_user'] }}@{{ hostvars['bastion']['ansible_host'] }} {% if ansible_ssh_private_key_file is defined %}-i {{ ansible_ssh_private_key_file }}{% endif %} ' {% endif %}"

# selinux state
preinstall_selinux_state: permissive

kube_api_anonymous_auth: true

# Default value, but will be set to true automatically if detected
is_fedora_coreos: false

# optional disable the swap
disable_swap: true

## Change this to use another Kubernetes version, e.g. a current beta release
kube_version: v1.20.2

## The minimum version working
kube_version_min_required: v1.18.0

## Kube Proxy mode One of ['iptables','ipvs']
kube_proxy_mode: ipvs

## List of kubeadm init phases that should be skipped during control plane setup
## By default 'addon/coredns' is skipped
## 'addon/kube-proxy' gets skipped for some network plugins
kubeadm_init_phases_skip_default: [ "addon/coredns" ]
kubeadm_init_phases_skip: >-
  {%- if kube_network_plugin == 'kube-router' and (kube_router_run_service_proxy is defined and kube_router_run_service_proxy) -%}
  {{ kubeadm_init_phases_skip_default }} + [ "addon/kube-proxy" ]
  {%- elif kube_network_plugin == 'cilium' and (cilium_kube_proxy_replacement is defined and cilium_kube_proxy_replacement == 'strict') -%}
  {{ kubeadm_init_phases_skip_default }} + [ "addon/kube-proxy" ]
  {%- elif kube_proxy_remove is defined and kube_proxy_remove -%}
  {{ kubeadm_init_phases_skip_default }} + [ "addon/kube-proxy" ]
  {%- else -%}
  {{ kubeadm_init_phases_skip_default }}
  {%- endif -%}

# A string slice of values which specify the addresses to use for NodePorts.
# Values may be valid IP blocks (e.g. 1.2.3.0/24, 1.2.3.4/32).
# The default empty string slice ([]) means to use all local addresses.
# kube_proxy_nodeport_addresses_cidr is retained for legacy config
kube_proxy_nodeport_addresses: >-
  {%- if kube_proxy_nodeport_addresses_cidr is defined -%}
  [{{ kube_proxy_nodeport_addresses_cidr }}]
  {%- else -%}
  []
  {%- endif -%}

# Set to true to allow pre-checks to fail and continue deployment
ignore_assert_errors: false

# nginx-proxy configure
nginx_config_dir: "/etc/nginx"

# haproxy configure
haproxy_config_dir: "/etc/haproxy"

# Directory where the binaries will be installed
bin_dir: /usr/local/bin
docker_bin_dir: /usr/bin
containerd_bin_dir: /usr/bin
etcd_data_dir: /var/lib/etcd
# Where the binaries will be downloaded.
# Note: ensure that you've enough disk space (about 1G)
local_release_dir: "/tmp/releases"
# Random shifts for retrying failed ops like pushing/downloading
retry_stagger: 5

# Install epel repo on Centos/RHEL
epel_enabled: false

# DNS configuration.
# Kubernetes cluster name, also will be used as DNS domain
cluster_name: cluster.local
# Subdomains of DNS domain to be resolved via /etc/resolv.conf for hostnet pods
ndots: 2
# Default resolv.conf options
docker_dns_options:
- ndots:{{ ndots }}
- timeout:2
- attempts:2
# Can be coredns, coredns_dual, manual, or none
dns_mode: coredns

# Enable nodelocal dns cache
enable_nodelocaldns: true
nodelocaldns_ip: 169.254.25.10
nodelocaldns_health_port: 9254

# Should be set to a cluster IP if using a custom cluster DNS
manual_dns_server: ""

# Can be docker_dns, host_resolvconf or none
resolvconf_mode: docker_dns
# Deploy netchecker app to verify DNS resolve as an HTTP service
deploy_netchecker: false
# Ip address of the kubernetes DNS service (called skydns for historical reasons)
skydns_server: "{{ kube_service_addresses|ipaddr('net')|ipaddr(3)|ipaddr('address') }}"
skydns_server_secondary: "{{ kube_service_addresses|ipaddr('net')|ipaddr(4)|ipaddr('address') }}"
dns_domain: "{{ cluster_name }}"
docker_dns_search_domains:
- 'default.svc.{{ dns_domain }}'
- 'svc.{{ dns_domain }}'

kube_dns_servers:
  coredns: ["{{skydns_server}}"]
  coredns_dual: "{{[skydns_server] + [ skydns_server_secondary ]}}"
  manual: ["{{manual_dns_server}}"]

dns_servers: "{{kube_dns_servers[dns_mode]}}"

enable_coredns_k8s_external: false
coredns_k8s_external_zone: k8s_external.local

enable_coredns_k8s_endpoint_pod_names: false

# Kubernetes configuration dirs and system namespace.
# Those are where all the additional config stuff goes
# the kubernetes normally puts in /srv/kubernetes.
# This puts them in a sane location and namespace.
# Editing those values will almost surely break something.
kube_config_dir: /etc/kubernetes
kube_script_dir: "{{ bin_dir }}/kubernetes-scripts"
kube_manifest_dir: "{{ kube_config_dir }}/manifests"

# This is where all the cert scripts and certs will be located
kube_cert_dir: "{{ kube_config_dir }}/ssl"

# compatibility directory for kubeadm
kube_cert_compat_dir: "/etc/kubernetes/pki"

# This is where all of the bearer tokens will be stored
kube_token_dir: "{{ kube_config_dir }}/tokens"

# This is the group that the cert creation scripts chgrp the
# cert files to. Not really changeable...
kube_cert_group: kube-cert

# Cluster Loglevel configuration
kube_log_level: 2

# Choose network plugin (cilium, calico, weave or flannel)
# Can also be set to 'cloud', which lets the cloud provider setup appropriate routing
kube_network_plugin: calico
kube_network_plugin_multus: false

# Determines if calico-rr group exists
peer_with_calico_rr: "{{ 'calico-rr' in groups and groups['calico-rr']|length > 0 }}"

# Set to false to disable calico-upgrade
calico_upgrade_enabled: true

# Choose data store type for calico: "etcd" or "kdd" (kubernetes datastore)
calico_datastore: "kdd"

# Kubernetes internal network for services, unused block of space.
kube_service_addresses: 10.233.0.0/18

# internal network. When used, it will assign IP
# addresses from this range to individual pods.
# This network must be unused in your network infrastructure!
kube_pods_subnet: 10.233.64.0/18

# internal network node size allocation (optional). This is the size allocated
# to each node for pod IP address allocation. Note that the number of pods per node is
# also limited by the kubelet_max_pods variable which defaults to 110.
#
# Example:
# Up to 64 nodes and up to 254 or kubelet_max_pods (the lowest of the two) pods per node:
#  - kube_pods_subnet: 10.233.64.0/18
#  - kube_network_node_prefix: 24
#  - kubelet_max_pods: 110
#
# Example:
# Up to 128 nodes and up to 126 or kubelet_max_pods (the lowest of the two) pods per node:
#  - kube_pods_subnet: 10.233.64.0/18
#  - kube_network_node_prefix: 25
#  - kubelet_max_pods: 110
kube_network_node_prefix: 24

# Configure Dual Stack networking (i.e. both IPv4 and IPv6)
enable_dual_stack_networks: false

# Kubernetes internal network for IPv6 services, unused block of space.
# This is only used if enable_dual_stack_networks is set to true
# This provides 4096 IPv6 IPs
kube_service_addresses_ipv6: fd85:ee78:d8a6:8607::1000/116

# Internal network. When used, it will assign IPv6 addresses from this range to individual pods.
# This network must not already be in your network infrastructure!
# This is only used if enable_dual_stack_networks is set to true.
# This provides room for 256 nodes with 254 pods per node.
kube_pods_subnet_ipv6: fd85:ee78:d8a6:8607::1:0000/112

# IPv6 subnet size allocated to each for pods.
# This is only used if enable_dual_stack_networks is set to true
# This provides room for 254 pods per node.
kube_network_node_prefix_ipv6: 120

# The virtual cluster IP, real host IPs and ports the API Server will be
# listening on.
# NOTE: loadbalancer_apiserver_localhost somewhat alters the final API enpdoint
# access IP value (automatically evaluated below)
kube_apiserver_ip: "{{ kube_service_addresses|ipaddr('net')|ipaddr(1)|ipaddr('address') }}"
kube_apiserver_bind_address: 0.0.0.0
# https
kube_apiserver_port: 6443
# http
kube_apiserver_insecure_bind_address: 127.0.0.1
kube_apiserver_insecure_port: 0

# If non-empty, will use this string as identification instead of the actual hostname
kube_override_hostname: >-
  {%- if cloud_provider is defined and cloud_provider in [ 'aws' ] -%}
  {%- else -%}
  {{ inventory_hostname }}
  {%- endif -%}

# dynamic kubelet configuration
dynamic_kubelet_configuration: false

# define kubelet config dir for dynamic kubelet
# kubelet_config_dir:
default_kubelet_config_dir: "{{ kube_config_dir }}/dynamic_kubelet_dir"
dynamic_kubelet_configuration_dir: "{{ kubelet_config_dir | default(default_kubelet_config_dir) }}"

# Aggregator
kube_api_aggregator_routing: false

# Profiling
kube_profiling: false

# Container for runtime
container_manager: docker

# Enable Kata Containers as additional container runtime
# When enabled, it requires `container_manager` different than Docker
kata_containers_enabled: false

# Enable crun as additional container runtime
# When enabled, it requires container_manager=crio
crun_enabled: false

# Container on localhost (download images when download_localhost is true)
container_manager_on_localhost: "{{ container_manager }}"

# CRI socket path
cri_socket: >-
  {%- if container_manager == 'crio' -%}
  /var/run/crio/crio.sock
  {%- elif container_manager == 'containerd' -%}
  /var/run/containerd/containerd.sock
  {%- else -%}
  /var/run/dockershim.sock
  {%- endif -%}

## Uncomment this if you want to force overlay/overlay2 as docker storage driver
## Please note that overlay2 is only supported on newer kernels
# docker_storage_options: -s overlay2

## Enable docker_container_storage_setup, it will configure devicemapper driver on Centos7 or RedHat7.
docker_container_storage_setup: false

## It must be define a disk path for docker_container_storage_setup_devs.
## Otherwise docker-storage-setup will be executed incorrectly.
# docker_container_storage_setup_devs: /dev/vdb

## Uncomment this if you have more than 3 nameservers, then we'll only use the first 3.
docker_dns_servers_strict: false

# Path used to store Docker data
docker_daemon_graph: "/var/lib/docker"

## Used to set docker daemon iptables options to true
docker_iptables_enabled: "false"

# Docker log options
# Rotate container stderr/stdout logs at 50m and keep last 5
docker_log_opts: "--log-opt max-size=50m --log-opt max-file=5"

## A list of insecure docker registries (IP address or domain name), for example
## to allow insecure-registry access to self-hosted registries. Empty by default.
# docker_insecure_registries:
#   - mirror.registry.io
#   - 172.19.16.11
docker_insecure_registries: []

## A list of additional registry mirrors, for example China registry mirror. Empty by default.
# docker_registry_mirrors:
#   - https://registry.docker-cn.com
#   - https://mirror.aliyuncs.com
docker_registry_mirrors: []

## If non-empty will override default system MounFlags value.
## This option takes a mount propagation flag: shared, slave
## or private, which control whether mounts in the file system
## namespace set up for docker will receive or propagate mounts
## and unmounts. Leave empty for system default
# docker_mount_flags:

## A string of extra options to pass to the docker daemon.
# docker_options: ""

## A list of plugins to install using 'docker plugin install --grant-all-permissions'
## Empty by default so no plugins will be installed.
docker_plugins: []

# Experimental kubeadm etcd deployment mode. Available only for new deployment
etcd_kubeadm_enabled: false

# Containerd options
containerd_use_systemd_cgroup: false

# Settings for containerized control plane (etcd/kubelet/secrets)
# deployment type for legacy etcd mode
etcd_deployment_type: docker
cert_management: script

# Make a copy of kubeconfig on the host that runs Ansible in {{ inventory_dir }}/artifacts
kubeconfig_localhost: false
# Download kubectl onto the host that runs Ansible in {{ bin_dir }}
kubectl_localhost: false

# Define credentials_dir here so it can be overridden
credentials_dir: "{{ inventory_dir }}/credentials"

# K8s image pull policy (imagePullPolicy)
k8s_image_pull_policy: IfNotPresent

# Kubernetes dashboard
# RBAC required. see docs/getting-started.md for access details.
dashboard_enabled: false

# Addons which can be enabled
helm_enabled: false
registry_enabled: false
metrics_server_enabled: false
enable_network_policy: true
local_path_provisioner_enabled: false
local_volume_provisioner_enabled: false
local_volume_provisioner_directory_mode: 0700
cinder_csi_enabled: false
aws_ebs_csi_enabled: false
azure_csi_enabled: false
gcp_pd_csi_enabled: false
vsphere_csi_enabled: false
persistent_volumes_enabled: false
cephfs_provisioner_enabled: false
rbd_provisioner_enabled: false
ingress_nginx_enabled: false
ingress_ambassador_enabled: false
ingress_alb_enabled: false
cert_manager_enabled: false
expand_persistent_volumes: false
metallb_enabled: false

## When OpenStack is used, Cinder version can be explicitly specified if autodetection fails (Fixed in 1.9: https://github.com/kubernetes/kubernetes/issues/50461)
# openstack_blockstorage_version: "v1/v2/auto (default)"
openstack_blockstorage_ignore_volume_az: "{{ volume_cross_zone_attachment | default('false') }}"
# set max volumes per node (cinder-csi), default not set
# node_volume_attach_limit: 25
# Cinder CSI topology, when false volumes can be cross-mounted between availability zones
# cinder_topology: false
# Set Cinder topology zones (can be multiple zones, default not set)
# cinder_topology_zones:
#   - nova

## When OpenStack is used, if LBaaSv2 is available you can enable it with the following 2 variables.
openstack_lbaas_enabled: false
# openstack_lbaas_subnet_id: "Neutron subnet ID (not network ID) to create LBaaS VIP"
## To enable automatic floating ip provisioning, specify a subnet.
# openstack_lbaas_floating_network_id: "Neutron network ID (not subnet ID) to get floating IP from, disabled by default"
## Override default LBaaS behavior
# openstack_lbaas_use_octavia: False
# openstack_lbaas_method: "ROUND_ROBIN"
# openstack_lbaas_provider: "haproxy"
openstack_lbaas_create_monitor: "yes"
openstack_lbaas_monitor_delay: "1m"
openstack_lbaas_monitor_timeout: "30s"
openstack_lbaas_monitor_max_retries: "3"
openstack_cacert: "{{ lookup('env','OS_CACERT') }}"

# Default values for the external OpenStack Cloud Controller
external_openstack_lbaas_use_octavia: true
external_openstack_lbaas_create_monitor: false
external_openstack_lbaas_monitor_delay: "1m"
external_openstack_lbaas_monitor_timeout: "30s"
external_openstack_lbaas_monitor_max_retries: "3"
external_openstack_network_ipv6_disabled: false
external_openstack_network_internal_networks:
- ""
external_openstack_network_public_networks:
- ""

## List of authorization modes that must be configured for
## the k8s cluster. Only 'AlwaysAllow', 'AlwaysDeny', 'Node' and
## 'RBAC' modes are tested. Order is important.
authorization_modes: ['Node', 'RBAC']
rbac_enabled: "{{ 'RBAC' in authorization_modes }}"

# When enabled, API bearer tokens (including service account tokens) can be used to authenticate to the kubelet's HTTPS endpoint
kubelet_authentication_token_webhook: true

# When enabled, access to the kubelet API requires authorization by delegation to the API server
kubelet_authorization_mode_webhook: true

# kubelet uses certificates for authenticating to the Kubernetes API
# Automatically generate a new key and request a new certificate from the Kubernetes API as the current certificate approaches expiration
kubelet_rotate_certificates: true
# kubelet can also request a new server certificate from the Kubernetes API
kubelet_rotate_server_certificates: false

# If set to true, kubelet errors if any of kernel tunables is different than kubelet defaults
kubelet_protect_kernel_defaults: true

## List of key=value pairs that describe feature gates for
## the k8s cluster.
kube_feature_gates: []

# Local volume provisioner storage classes
# Levarages Ansibles string to Python datatype casting. Otherwise the dict_key isn't substituted
# see https://github.com/ansible/ansible/issues/17324
local_volume_provisioner_storage_classes: |
  {
    "{{ local_volume_provisioner_storage_class | default('local-storage') }}": {
      "host_dir": "{{ local_volume_provisioner_base_dir | default ('/mnt/disks') }}",
      "mount_dir": "{{ local_volume_provisioner_mount_dir | default('/mnt/disks') }}",
      "volume_mode": "Filesystem",
      "fs_type": "ext4"

    }
  }

# weave's network password for encryption
# if null then no network encryption
# you can use --extra-vars to pass the password in command line
weave_password: EnterPasswordHere

ssl_ca_dirs: |-
  [
  {% if ansible_os_family in ['Flatcar Container Linux by Kinvolk'] -%}
  '/usr/share/ca-certificates',
  {% elif ansible_os_family == 'RedHat' -%}
  '/etc/pki/tls',
  '/etc/pki/ca-trust',
  {% elif ansible_os_family == 'Debian' -%}
  '/usr/share/ca-certificates',
  {% endif -%}
  ]

# Vars for pointing to kubernetes api endpoints
is_kube_master: "{{ inventory_hostname in groups['kube-master'] }}"
kube_apiserver_count: "{{ groups['kube-master'] | length }}"
kube_apiserver_address: "{{ ip | default(fallback_ips[inventory_hostname]) }}"
kube_apiserver_access_address: "{{ access_ip | default(kube_apiserver_address) }}"
first_kube_master: "{{ hostvars[groups['kube-master'][0]]['access_ip'] | default(hostvars[groups['kube-master'][0]]['ip'] | default(fallback_ips[groups['kube-master'][0]])) }}"
loadbalancer_apiserver_localhost: "{{ loadbalancer_apiserver is not defined }}"
loadbalancer_apiserver_type: "nginx"
# applied if only external loadbalancer_apiserver is defined, otherwise ignored
apiserver_loadbalancer_domain_name: "lb-apiserver.kubernetes.local"
kube_apiserver_global_endpoint: |-
  {% if loadbalancer_apiserver is defined -%}
      https://{{ apiserver_loadbalancer_domain_name }}:{{ loadbalancer_apiserver.port|default(kube_apiserver_port) }}
  {%- else -%}
      https://{{ first_kube_master }}:{{ kube_apiserver_port }}
  {%- endif %}
kube_apiserver_endpoint: |-
  {% if loadbalancer_apiserver is defined -%}
      https://{{ apiserver_loadbalancer_domain_name }}:{{ loadbalancer_apiserver.port|default(kube_apiserver_port) }}
  {%- elif not is_kube_master and loadbalancer_apiserver_localhost -%}
      https://localhost:{{ loadbalancer_apiserver_port|default(kube_apiserver_port) }}
  {%- elif is_kube_master -%}
      https://{{ kube_apiserver_bind_address | regex_replace('0\.0\.0\.0','127.0.0.1') }}:{{ kube_apiserver_port }}
  {%- else -%}
      https://{{ first_kube_master }}:{{ kube_apiserver_port }}
  {%- endif %}
kube_apiserver_insecure_endpoint: >-
  http://{{ kube_apiserver_insecure_bind_address | regex_replace('0\.0\.0\.0','127.0.0.1') }}:{{ kube_apiserver_insecure_port }}
kube_apiserver_client_cert: "{{ kube_cert_dir }}/ca.crt"
kube_apiserver_client_key: "{{ kube_cert_dir }}/ca.key"

# Set to true to deploy etcd-events cluster
etcd_events_cluster_enabled: false

# etcd group can be empty when kubeadm manages etcd
etcd_hosts: "{{ groups['etcd'] | default(groups['kube-master']) }}"

# Vars for pointing to etcd endpoints
is_etcd_master: "{{ inventory_hostname in groups['etcd'] }}"
etcd_address: "{{ ip | default(fallback_ips[inventory_hostname]) }}"
etcd_access_address: "{{ access_ip | default(etcd_address) }}"
etcd_events_access_address: "{{ access_ip | default(etcd_address) }}"
etcd_peer_url: "https://{{ etcd_access_address }}:2380"
etcd_client_url: "https://{{ etcd_access_address }}:2379"
etcd_events_peer_url: "https://{{ etcd_events_access_address }}:2382"
etcd_events_client_url: "https://{{ etcd_events_access_address }}:2381"
etcd_access_addresses: |-
  {% for item in etcd_hosts -%}
    https://{{ hostvars[item]['etcd_access_address'] | default(hostvars[item]['ip'] | default(fallback_ips[item])) }}:2379{% if not loop.last %},{% endif %}
  {%- endfor %}
etcd_events_access_addresses_list: |-
  [
  {% for item in etcd_hosts -%}
    'https://{{ hostvars[item]['etcd_events_access_address'] | default(hostvars[item]['ip'] | default(fallback_ips[item])) }}:2381'{% if not loop.last %},{% endif %}
  {%- endfor %}
  ]
etcd_events_access_addresses: "{{etcd_events_access_addresses_list | join(',')}}"
etcd_events_access_addresses_semicolon: "{{etcd_events_access_addresses_list | join(';')}}"
# user should set etcd_member_name in inventory/mycluster/hosts.ini
etcd_member_name: |-
  {% for host in groups['etcd'] %}
  {%   if inventory_hostname == host %}{{ hostvars[host].etcd_member_name | default("etcd" + loop.index|string) }}{% endif %}
  {% endfor %}
etcd_peer_addresses: |-
  {% for item in groups['etcd'] -%}
    {{ hostvars[item].etcd_member_name | default("etcd" + loop.index|string) }}=https://{{ hostvars[item].etcd_access_address | default(hostvars[item].ip | default(fallback_ips[item])) }}:2380{% if not loop.last %},{% endif %}
  {%- endfor %}
etcd_events_peer_addresses: |-
  {% for item in groups['etcd'] -%}
    {{ hostvars[item].etcd_member_name | default("etcd" + loop.index|string) }}-events=https://{{ hostvars[item].etcd_events_access_address | default(hostvars[item].ip | default(fallback_ips[item])) }}:2382{% if not loop.last %},{% endif %}
  {%- endfor %}

podsecuritypolicy_enabled: false
etcd_heartbeat_interval: "250"
etcd_election_timeout: "5000"
etcd_snapshot_count: "10000"

certificates_key_size: 2048
certificates_duration: 36500

etcd_config_dir: /etc/ssl/etcd
etcd_events_data_dir: "/var/lib/etcd-events"
etcd_cert_dir: "{{ etcd_config_dir }}/ssl"

typha_enabled: false

_host_architecture_groups:
  x86_64: amd64
  aarch64: arm64
  armv7l: arm
host_architecture: >-
  {%- if ansible_architecture in _host_architecture_groups -%}
  {{ _host_architecture_groups[ansible_architecture] }}
  {%- else -%}
  {{ ansible_architecture }}
  {%- endif -%}

# Sets the eventRecordQPS parameter in kubelet-config.yaml. The default value is 5 (see types.go)
# Setting it to 0 allows unlimited requests per second.
kubelet_event_record_qps: 5