Below is an example RKE template configuration file for reference.

    The YAML in the RKE template uses the same customization that is used when you create an RKE cluster. However, since the YAML is within the context of a Rancher provisioned RKE cluster, the customization from the RKE docs needs to be nested under the rancher_kubernetes_engine directive.

    1. # 
    2. # Cluster Config
    3. # 
    4. docker_root_dir: /var/lib/docker
    6. enable_cluster_alerting: false
    7. # This setting is not enforced. Clusters
    8. # created with this sample template
    9. # would have alerting turned off by default,
    10. # but end users could still turn alerting
    11. # on or off.
    13. enable_cluster_monitoring: true 
    14. # This setting is not enforced. Clusters
    15. # created with this sample template
    16. # would have monitoring turned on
    17. # by default, but end users could still
    18. # turn monitoring on or off.
    20. enable_network_policy: false
    21. local_cluster_auth_endpoint:
    22.   enabled: true
    23. # 
    24. # Rancher Config
    25. # 
    26. rancher_kubernetes_engine_config: # Your RKE template config goes here.
    27.   addon_job_timeout: 30
    28.   authentication:
    29.     strategy: x509
    30.   ignore_docker_version: true
    31. # 
    32. # # Currently only nginx ingress provider is supported.
    33. # # To disable ingress controller, set `provider: none`
    34. # # To enable ingress on specific nodes, use the node_selector, eg:
    35. #    provider: nginx
    36. #    node_selector:
    37. #      app: ingress
    38. # 
    39.   ingress:
    40.     provider: nginx
    41.   kubernetes_version: v1.15.3-rancher3-1
    42.   monitoring:
    43.     provider: metrics-server
    44. # 
    45. #   If you are using calico on AWS
    46. # 
    47. #    network:
    48. #      plugin: calico
    49. #      calico_network_provider:
    50. #        cloud_provider: aws
    51. # 
    52. # # To specify flannel interface
    53. # 
    54. #    network:
    55. #      plugin: flannel
    56. #      flannel_network_provider:
    57. #      iface: eth1
    58. # 
    59. # # To specify flannel interface for canal plugin
    60. # 
    61. #    network:
    62. #      plugin: canal
    63. #      canal_network_provider:
    64. #        iface: eth1
    65. # 
    66.   network:
    67.     options:
    68.       flannel_backend_type: vxlan
    69.     plugin: canal
    70. # 
    71. #    services:
    72. #      kube-api:
    73. #        service_cluster_ip_range: 10.43.0.0/16
    74. #      kube-controller:
    75. #        cluster_cidr: 10.42.0.0/16
    76. #        service_cluster_ip_range: 10.43.0.0/16
    77. #      kubelet:
    78. #        cluster_domain: cluster.local
    79. #        cluster_dns_server: 10.43.0.10
    80. # 
    81.   services:
    82.     etcd:
    83.       backup_config:
    84.         enabled: true
    85.         interval_hours: 12
    86.         retention: 6
    87.         safe_timestamp: false
    88.       creation: 12h
    89.       extra_args:
    90.         election-timeout: 5000
    91.         heartbeat-interval: 500
    92.       gid: 0
    93.       retention: 72h
    94.       snapshot: false
    95.       uid: 0
    96.     kube_api:
    97.       always_pull_images: false
    98.       pod_security_policy: false
    99.       service_node_port_range: 30000-32767
    100.   ssh_agent_auth: false
    101. windows_prefered_cluster: false