Chapter 8. Installing a Stand-alone Deployment of OpenShift Container Registry

Create an OSEv3 group that contains the masters and nodes groups
Set variables common for all OSEv3 hosts
SSH user, this user should allow ssh based auth without requiring a password
If ansible_ssh_user is not root, ansible_become must be set to true
uncomment the following to enable htpasswd authentication; defaults to DenyAllPasswordIdentityProvider
host group for masters
host group for etcd
host group for nodes

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

# Set variables common for all OSEv3 hosts
[OSEv3:vars]
# SSH user, this user should allow ssh based auth without requiring a password
ansible_ssh_user=root

openshift_master_default_subdomain=apps.test.example.com

# If ansible_ssh_user is not root, ansible_become must be set to true
#ansible_become=true

openshift_deployment_type=openshift-enterprise
deployment_subtype=registry 

openshift_hosted_infra_selector="" 

# uncomment the following to enable htpasswd authentication; defaults to DenyAllPasswordIdentityProvider
#openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

# host group for masters
[masters]
registry.example.com

# host group for etcd
[etcd]
registry.example.com

# host group for nodes
[nodes]
registry.example.com openshift_node_group_name='node-config-all-in-one'

Create an OSEv3 group that contains the master, nodes, etcd, and lb groups.
The lb group lets Ansible configure HAProxy as the load balancing solution.
Comment lb out if your load balancer is pre-configured.
Set variables common for all OSEv3 hosts
Uncomment the following to enable htpasswd authentication; defaults to
DenyAllPasswordIdentityProvider.
Native high availability 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.
apply updated node-config-compute group defaults
enable ntp on masters to ensure proper failover
host group for masters
host group for etcd
Specify load balancer host
host group for nodes, includes region info

# Create an OSEv3 group that contains the master, nodes, etcd, and lb groups.
# The lb group lets Ansible configure HAProxy as the load balancing solution.
# Comment lb out if your load balancer is pre-configured.
[OSEv3:children]
masters
nodes
etcd
lb

# Set variables common for all OSEv3 hosts
[OSEv3:vars]
ansible_ssh_user=root
openshift_deployment_type=openshift-enterprise
deployment_subtype=registry 

openshift_master_default_subdomain=apps.test.example.com

# Uncomment the following to enable htpasswd authentication; defaults to
# DenyAllPasswordIdentityProvider.
#openshift_master_identity_providers=[{'name': 'htpasswd_auth', 'login': 'true', 'challenge': 'true', 'kind': 'HTPasswdPasswordIdentityProvider'}]

# Native high availability 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=openshift-internal.example.com
openshift_master_cluster_public_hostname=openshift-cluster.example.com

# apply updated node-config-compute group defaults
openshift_node_groups=[{'name': 'node-config-compute', 'labels': ['node-role.kubernetes.io/compute=true'], 'edits': [{'key': 'kubeletArguments.pods-per-core','value': ['20']}, {'key': 'kubeletArguments.max-pods','value': ['250']}, {'key': 'kubeletArguments.image-gc-high-threshold', 'value':['90']}, {'key': 'kubeletArguments.image-gc-low-threshold', 'value': ['80']}]}]

# enable ntp on masters to ensure proper failover
openshift_clock_enabled=true

# host group for masters
[masters]
master1.example.com
master2.example.com
master3.example.com

# host group for etcd
[etcd]
etcd1.example.com
etcd2.example.com
etcd3.example.com

# Specify load balancer host
[lb]
lb.example.com

# host group for nodes, includes region info
[nodes]
master[1:3].example.com openshift_node_group_name='node-config-master-infra'
node1.example.com       openshift_node_group_name='node-config-compute'
node2.example.com       openshift_node_group_name='node-config-compute'