OSE 3.1 HA Cluster Ansible Inventory Hosts file

hosts

# This is an example of a bring your own (byo) host inventory

# Create an OSEv3 group that contains the masters and nodes groups
[OSEv3:children]
masters
nodes
etcd
lb

# Set variables common for all OSEv3 hosts
[OSEv3:vars]
# SSH user, this user should allow ssh based auth without requiring a
# password. If using ssh key based auth, then the key should be managed by an
# ssh agent.
ansible_ssh_user=root

# If ansible_ssh_user is not root, ansible_sudo must be set to true and the
# user must be configured for passwordless sudo
#ansible_sudo=true

# Debug level for all OpenShift components (Defaults to 2)
debug_level=2

# deployment type valid values are origin, online, atomic-enterprise, and openshift-enterprise
deployment_type=openshift-enterprise

# Install the openshift examples
#openshift_install_examples=true

# Enable cluster metrics
#use_cluster_metrics=true

# Configure logoutURL in the master config for console customization
# See: https://docs.openshift.org/latest/install_config/web_console_customization.html#changing-the-logout-url
#openshift_master_logout_url=http://example.com

# Configure extensionScripts in the master config for console customization
# See: https://docs.openshift.org/latest/install_config/web_console_customization.html#loading-custom-scripts-and-stylesheets
#openshift_master_extension_scripts=['/path/to/script1.js','/path/to/script2.js']

# Configure extensionStylesheets in the master config for console customization
# See: https://docs.openshift.org/latest/install_config/web_console_customization.html#loading-custom-scripts-and-stylesheets
#openshift_master_extension_stylesheets=['/path/to/stylesheet1.css','/path/to/stylesheet2.css']

# Configure extensions in the master config for console customization
# See: https://docs.openshift.org/latest/install_config/web_console_customization.html#serving-static-files
#openshift_master_extensions=[{'name': 'images', 'sourceDirectory': '/path/to/my_images'}]

# Configure extensions in the master config for console customization
# See: https://docs.openshift.org/latest/install_config/web_console_customization.html#serving-static-files
#openshift_master_oauth_template=/path/to/login-template.html

# Configure metricsPublicURL in the master config for cluster metrics
# See: https://docs.openshift.com/enterprise/latest/install_config/cluster_metrics.html
#openshift_master_metrics_public_url=https://hawkular-metrics.example.com/hawkular/metrics

# Configure loggingPublicURL in the master config for aggregate logging
# See: https://docs.openshift.com/enterprise/latest/install_config/aggregate_logging.html
#openshift_master_logging_public_url=https://kibana.example.com

# Add additional, insecure, and blocked registries to global docker configuration
# For enterprise deployment types we ensure that registry.access.redhat.com is
# included if you do not include it
#cli_docker_additional_registries=registry.example.com
#cli_docker_insecure_registries=registry.example.com
#cli_docker_blocked_registries=registry.hacker.com

# Alternate image format string. If you're not modifying the format string and
# only need to inject your own registry you may want to consider
# cli_docker_additional_registries instead
#oreg_url=example.com/openshift3/ose-${component}:${version}

# Additional yum repos to install
#openshift_additional_repos=[{'id': 'ose-devel', 'name': 'ose-devel', 'baseurl': 'http://example.com/puddle/build/AtomicOpenShift/3.1/latest/RH7-RHOSE-3.0/$basearch/os', 'enabled': 1, 'gpgcheck': 0}]

# htpasswd auth
#openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider', 'filename': '/etc/origin/htpasswd'}]

# Allow all auth
#openshift_master_identity_providers=[{'name': 'allow_all', 'login': 'true', 'challenge': 'true', 'kind': 'AllowAllPasswordIdentityProvider'}]

# LDAP auth
#openshift_master_identity_providers=[{'name': 'my_ldap_provider', 'challenge': 'true', 'login': 'true', 'kind': 'LDAPPasswordIdentityProvider', 'attributes': {'id': ['dn'], 'email': ['mail'], 'name': ['cn'], 'preferredUsername': ['uid']}, 'bindDN': '', 'bindPassword': '', 'ca': '', 'insecure': 'false', 'url': 'ldap://ldap.example.com:389/ou=users,dc=example,dc=com?uid'}]
openshift_master_identity_providers=[{'name': 'my_ldap_provider', 'challenge': 'true', 'login': 'true', 'kind': 'LDAPPasswordIdentityProvider', 'attributes': {'id': ['dn'], 'email': ['mail'], 'name': ['cn'], 'preferredUsername': ['uid']}, 'bindDN': '', 'bindPassword': '', 'ca': '', 'insecure': 'true', 'url': 'ldap://ldap.example.com:389/ou=people,o=example.com?uid'}]

# Project Configuration
#osm_project_request_message=''
#osm_project_request_template=''
#osm_mcs_allocator_range='s0:/2'
#osm_mcs_labels_per_project=5
#osm_uid_allocator_range='1000000000-1999999999/10000'

# Configure Fluentd
#use_fluentd=true

# Enable cockpit
#osm_use_cockpit=true
#
# Set cockpit plugins
#osm_cockpit_plugins=['cockpit-kubernetes']

# Native high availbility cluster method with optional load balancer.
# If no lb group is defined installer assumes that a load balancer has
# been preconfigured. For installation the value of
# openshift_master_cluster_hostname must resolve to the load balancer
# or to one or all of the masters defined in the inventory if no load
# balancer is present.
openshift_master_cluster_method=native
openshift_master_cluster_hostname=ose-master.ha.os.example.com
openshift_master_cluster_public_hostname=ose-master.ha.os.example.com

# Pacemaker high availability cluster method.
# Pacemaker HA environment must be able to self provision the
# configured VIP. For installation openshift_master_cluster_hostname
# must resolve to the configured VIP.
#openshift_master_cluster_method=pacemaker
#openshift_master_cluster_password=openshift_cluster
#openshift_master_cluster_vip=192.168.133.25
#openshift_master_cluster_public_vip=192.168.133.25
#openshift_master_cluster_hostname=openshift-ansible.test.example.com
#openshift_master_cluster_public_hostname=openshift-ansible.test.example.com

# Override the default controller lease ttl
#osm_controller_lease_ttl=30

# Configure controller arguments
#osm_controller_args={'resource-quota-sync-period': ['10s']}

# Configure api server arguments
#osm_api_server_args={'max-requests-inflight': ['400']}

# default subdomain to use for exposed routes
osm_default_subdomain=ha.os.example.com

# additional cors origins
#osm_custom_cors_origins=['foo.example.com', 'bar.example.com']

# default project node selector
osm_default_node_selector='region=primary'

# Override the default pod eviction timeout
#openshift_master_pod_eviction_timeout=5m

# default storage plugin dependencies to install, by default the ceph and
# glusterfs plugin dependencies will be installed, if available.
#osn_storage_plugin_deps=['ceph','glusterfs']

# default selectors for router and registry services
openshift_router_selector='region=infra'
openshift_registry_selector='region=infra'

# Configure the multi-tenant SDN plugin (default is 'redhat/openshift-ovs-subnet')
# os_sdn_network_plugin_name='redhat/openshift-ovs-multitenant'

# Disable the OpenShift SDN plugin
# openshift_use_openshift_sdn=False

# set RPM version for debugging purposes
#openshift_pkg_version=-3.1.0.0

# Configure custom named certificates
# NOTE: openshift_master_named_certificates is cached on masters and is an
# additive fact, meaning that each run with a different set of certificates
# will add the newly provided certificates to the cached set of certificates.
# If you would like openshift_master_named_certificates to be overwritten with
# the provided value, specify openshift_master_overwrite_named_certificates.
#openshift_master_overwrite_named_certificates: true
#
# Provide local certificate paths which will be deployed to masters
#openshift_master_named_certificates=[{"certfile": "/path/to/custom1.crt", "keyfile": "/path/to/custom1.key"}]
#
# Detected names may be overridden by specifying the "names" key
#openshift_master_named_certificates=[{"certfile": "/path/to/custom1.crt", "keyfile": "/path/to/custom1.key", "names": ["public-master-host.com"]}]

# Session options
#openshift_master_session_name=ssn
#openshift_master_session_max_seconds=3600

# An authentication and encryption secret will be generated if secrets
# are not provided. If provided, openshift_master_session_auth_secrets
# and openshift_master_encryption_secrets must be equal length.
#
# Signing secrets, used to authenticate sessions using
# HMAC. Recommended to use secrets with 32 or 64 bytes.
#openshift_master_session_auth_secrets=['DONT+USE+THIS+SECRET+b4NV+pmZNSO']
#
# Encrypting secrets, used to encrypt sessions. Must be 16, 24, or 32
# characters long, to select AES-128, AES-192, or AES-256.
#openshift_master_session_encryption_secrets=['DONT+USE+THIS+SECRET+b4NV+pmZNSO']

# configure how often node iptables rules are refreshed
#openshift_node_iptables_sync_period=5s

# Configure nodeIP in the node config
# This is needed in cases where node traffic is desired to go over an
# interface other than the default network interface.
#openshift_node_set_node_ip=True

# Force setting of system hostname when configuring OpenShift
# This works around issues related to installations that do not have valid dns
# entries for the interfaces attached to the host.
#openshift_set_hostname=True

# Configure dnsIP in the node config
#openshift_dns_ip=172.30.0.1

# Configure node kubelet arguments
#openshift_node_kubelet_args={'max-pods': ['40'], 'image-gc-high-threshold': ['90'], 'image-gc-low-threshold': ['80']}

# host group for masters
[masters]
ose-ha-master-[01:03].example.com

[etcd]
ose-ha-etcd-[01:03].example.com

[lb]
ose-ha-lb-01.example.com

# NOTE: Currently we require that masters be part of the SDN which requires that they also be nodes
# However, in order to ensure that your masters are not burdened with running pods you should
# make them unschedulable by adding openshift_schedulable=False any node that's also a master.
[nodes]
ose-ha-master-[01:03].example.com openshift_node_labels="{'region': 'infra', 'zone': 'rhev'}" openshift_schedulable=False
ose-ha-node-[01:02].example.com    openshift_node_labels="{'region': 'infra', 'zone': 'rhev'}"
ose-ha-node-[03:06].example.com    openshift_node_labels="{'region': 'primary', 'zone': 'rhev'}"

Related post: https://lists.openshift.redhat.com/openshift-archives/users/2016-January/msg00337.html