rke 简配

nodes:
  - address: 10.10.10.1
    user: rke
    role: [controlplane,etcd]
  - address: 10.10.10.2
    user: rke
    role: [controlplane,etcd,worker]
  - address: 10.10.10.3
    user: rke
    role: [worker]
system_images:
    kubernetes: rancher/hyperkube:v1.13.5-rancher1
services:
  etcd:
    backup_config:
      enabled: true 
      interval_hours: 6
      retention: 12
    extra_args:
      quota-backend-bytes: '4294967296'
  kubelet:
    cluster_domain: cluster.local
    cluster_dns_server: 10.43.0.10
    fail_swap_on: true
    extra_args:
      max-pods: 20
      enforce-node-allocatable: 'pods'
      system-reserved: 'cpu=1,memory=2000Mi'
      kube-reserved: 'cpu=1.5,memory=3000Mi'
  kube-controller:
    cluster_cidr: 10.42.0.0/16
    service_cluster_ip_range: 10.43.0.0/16
    extra_args:
      node-cidr-mask-size: '24'
      node-monitor-period: '5s'
      node-monitor-grace-period: '10s'
      node-startup-grace-period: '20s'
      pod-eviction-timeout: '10s'
  kube-api:
    service_cluster_ip_range: 10.43.0.0/16
    service_node_port_range: 30000-32767
    pod_security_policy: false
    always_pull_images: false
dns:
  provider: coredns