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

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

epel_enabled: false
# Kubespray sets this to true after clusterDNS is running to apply changes to the host resolv.conf
dns_late: false

# Set to true if your network does not support IPv6
# This may be necessary for pulling Docker images from
# GCE docker repository
disable_ipv6_dns: false

# Remove default cluster search domains (``default.svc.{{ dns_domain }}, svc.{{ dns_domain }}``).
remove_default_searchdomains: false

kube_owner: kube
kube_cert_group: kube-cert
kube_config_dir: /etc/kubernetes
kube_cert_dir: "{{ kube_config_dir }}/ssl"
kube_cert_compat_dir: /etc/kubernetes/pki
kubelet_flexvolumes_plugins_dir: /usr/libexec/kubernetes/kubelet-plugins/volume/exec

# Flatcar Container Linux by Kinvolk cloud init config file to define /etc/resolv.conf content
# for hostnet pods and infra needs
resolveconf_cloud_init_conf: /etc/resolveconf_cloud_init.conf

# All inventory hostnames will be written into each /etc/hosts file.
populate_inventory_to_hosts_file: true
# K8S Api FQDN will be written into /etc/hosts file.
populate_loadbalancer_apiserver_to_hosts_file: true
# etc_hosts_localhost_entries will be written into /etc/hosts file.
populate_localhost_entries_to_hosts_file: true

sysctl_file_path: "/etc/sysctl.d/99-sysctl.conf"

etc_hosts_localhost_entries:
  127.0.0.1:
    expected:
      - localhost
      - localhost.localdomain
  ::1:
    expected:
      - localhost6
      - localhost6.localdomain
    unexpected:
      - localhost
      - localhost.localdomain

# Minimal memory requirement in MB for safety checks
minimal_node_memory_mb: 1024
minimal_master_memory_mb: 1500

yum_repo_dir: /etc/yum.repos.d

# number of times package install task should be retried
pkg_install_retries: 4

# Check if access_ip responds to ping. Set false if your firewall blocks ICMP.
ping_access_ip: true

## NTP Settings
# Start the ntpd or chrony service and enable it at system boot.
ntp_enabled: false
# The package to install which provides NTP functionality.
# The default is ntp for most platforms, or chrony on RHEL/CentOS 7 and later.
# The ntp_package can be one of ['ntp', 'chrony']
ntp_package: >-
      {% if ansible_os_family == "RedHat" -%}
      chrony
      {%- else -%}
      ntp
      {%- endif -%}

# Manage the NTP configuration file.
ntp_manage_config: false
# Specify the NTP servers
# Only takes effect when ntp_manage_config is true.
ntp_servers:
  - "0.pool.ntp.org iburst"
  - "1.pool.ntp.org iburst"
  - "2.pool.ntp.org iburst"
  - "3.pool.ntp.org iburst"
# Restrict NTP access to these hosts.
# Only takes effect when ntp_manage_config is true.
ntp_restrict:
  - "127.0.0.1"
  - "::1"
# Specify whether to filter interfaces
ntp_filter_interface: false
# Specify the interfaces
# Only takes effect when ntp_filter_interface is true
# ntp_interfaces:
#   - ignore wildcard
#   - listen xxx
# The NTP driftfile path
# Only takes effect when ntp_manage_config is true.
ntp_driftfile: /var/lib/ntp/ntp.drift
# Enable tinker panic is useful when running NTP in a VM environment.
# Only takes effect when ntp_manage_config is true.
ntp_tinker_panic: false

# Force sync time immediately after the ntp installed, which is useful in a newly installed system.
ntp_force_sync_immediately: false

# Set the timezone for your server.  eg: "Etc/UTC","Etc/GMT-8". If not set, the timezone will not change.
ntp_timezone: ""

# Currently known os distributions
supported_os_distributions:
  - 'RedHat'
  - 'CentOS'
  - 'Fedora'
  - 'Ubuntu'
  - 'Debian'
  - 'Flatcar'
  - 'Flatcar Container Linux by Kinvolk'
  - 'Suse'
  - 'openSUSE Leap'
  - 'openSUSE Tumbleweed'
  - 'ClearLinux'
  - 'OracleLinux'
  - 'AlmaLinux'
  - 'Rocky'
  - 'Amazon'
  - 'Kylin Linux Advanced Server'
  - 'UnionTech'
  - 'UniontechOS'
  - 'openEuler'

# Extending some distributions into the redhat os family
redhat_os_family_extensions:
  - "UnionTech"
  - "UniontechOS"

# Sets DNSStubListener=no, useful if you get "0.0.0.0:53: bind: address already in use"
systemd_resolved_disable_stub_listener: "{{ ansible_os_family in ['Flatcar', 'Flatcar Container Linux by Kinvolk'] }}"

# Used to disable File Access Policy Daemon service.
# If service is enabled, the CNI plugin installation will fail
disable_fapolicyd: true