Using one var file per environment is simplier

environments/production/group_vars/all.yml

@@ -4,3 +4,65 @@ bin_dir: /usr/local/bin
 # Where the binaries will be downloaded.
 # Note: ensure that you've enough disk space (about 1G)
 local_release_dir: "/tmp/releases"
+
+# Users to create for basic auth in Kubernetes API via HTTP
+# kube_users:
+#   kube:
+#     pass: changeme
+#     role: admin
+#   root:
+#     pass: changeme
+#     role: admin
+
+# Kubernetes cluster name, also will be used as DNS domain
+# cluster_name: cluster.local
+
+# set this variable to calico if needed. keep it empty if flannel is used
+# kube_network_plugin: calico
+
+# 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 total size (optional). This is the prefix of the
+# entire network. Must be unused in your environment.
+# kube_network_prefix: 18
+
+# internal network node size allocation (optional). This is the size allocated
+# to each node on your network.  With these defaults you should have
+# room for 4096 nodes with 254 pods per node.
+# kube_network_node_prefix: 24
+
+# With calico it is possible to distributed routes with border routers of the datacenter.
+# peer_with_router: false
+# Warning : enabling router peering will disable calico's default behavior ('node mesh').
+# The subnets of each nodes will be distributed by the datacenter router
+
+# The port the API Server will be listening on.
+# kube_apiserver_ip: "{{ kube_service_addresses|ipaddr('net')|ipaddr(1)|ipaddr('address') }}"
+# kube_apiserver_port: 443 # (https)
+# kube_apiserver_insecure_port: 8080 # (http)
+
+# Internal DNS configuration.
+# Kubernetes can create and mainatain its own DNS server to resolve service names
+# into appropriate IP addresses. It's highly advisable to run such DNS server,
+# as it greatly simplifies configuration of your applications - you can use
+# service names instead of magic environment variables.
+# You still must manually configure all your containers to use this DNS server,
+# Kubernetes won't do this for you (yet).
+
+# Upstream dns servers used by dnsmasq
+# upstream_dns_servers:
+#   - 8.8.8.8
+#   - 4.4.8.8
+#
+# # Use dns server : https://github.com/ansibl8s/k8s-skydns/blob/master/skydns-README.md
+# dns_setup: true
+# dns_domain: "{{ cluster_name }}"
+#
+# # Ip address of the kubernetes dns service
+# dns_server: "{{ kube_service_addresses|ipaddr('net')|ipaddr(253)|ipaddr('address') }}"

environments/production/group_vars/k8s-cluster.yml

-# Users to create for basic auth in Kubernetes API via HTTP
-# kube_users:
-#   kube:
-#     pass: changeme
-#     role: admin
-#   root:
-#     pass: changeme
-#     role: admin
-
-# Kubernetes cluster name, also will be used as DNS domain
-# cluster_name: cluster.local
-
-# set this variable to calico if needed. keep it empty if flannel is used
-# kube_network_plugin: calico
-
-# 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 total size (optional). This is the prefix of the
-# entire network. Must be unused in your environment.
-# kube_network_prefix: 18
-
-# internal network node size allocation (optional). This is the size allocated
-# to each node on your network.  With these defaults you should have
-# room for 4096 nodes with 254 pods per node.
-# kube_network_node_prefix: 24
-
-# With calico it is possible to distributed routes with border routers of the datacenter.
-# peer_with_router: false
-# Warning : enabling router peering will disable calico's default behavior ('node mesh').
-# The subnets of each nodes will be distributed by the datacenter router
-
-# The port the API Server will be listening on.
-# kube_master_port: 443 # (https)
-# kube_master_insecure_port: 8080 # (http)
-
-# Internal DNS configuration.
-# Kubernetes can create and mainatain its own DNS server to resolve service names
-# into appropriate IP addresses. It's highly advisable to run such DNS server,
-# as it greatly simplifies configuration of your applications - you can use
-# service names instead of magic environment variables.
-# You still must manually configure all your containers to use this DNS server,
-# Kubernetes won't do this for you (yet).
-
-# Upstream dns servers used by dnsmasq
-# upstream_dns_servers:
-#   - 8.8.8.8
-#   - 4.4.8.8
-#
-# # Use dns server : https://github.com/ansibl8s/k8s-skydns/blob/master/skydns-README.md
-# dns_setup: true
-# dns_domain: "{{ cluster_name }}"
-#
-# # Ip address of the kubernetes dns service
-# dns_server: 10.233.0.10