openshift node資源限制

在oc的node配置文件中添加

......
kubeletArguments:
  cgroups-per-qos:
    - "true"
  cgroup-driver:
    - "systemd"
  enforce-node-allocatable:
    - "pods"
  pods-per-core:    #每核cpu數可運行的pod數
    - "10"
  max-pods:         #node節點最大可運行的pod數，比 pods-per-core嚴格
    - "60"
  kube-reserved:    #kube組件保留資源
    - "cpu=200m,memory=256M"
  system-reserved:  #其餘系統組件保留資源好比：docker
    - "cpu=200m,memory=256M"
  image-gc-high-threshold:
    - "90"
  image-gc-low-threshold:
    - "80"
  eviction-hard: #硬驅逐策略
    - "memory.available<256Mi,nodefs.available<2Gi,nodefs.inodesFree<5%,imagefs.available<1Gi,imagefs.inodesFree<5%"
  eviction-soft: #軟驅逐策略
    - "memory.available<512Mi,nodefs.available<4Gi,nodefs.inodesFree<10%,imagefs.available<2Gi,imagefs.inodesFree<10%"
  eviction-soft-grace-period:   #軟驅逐策略寬限期
    - "memory.available=30s,nodefs.available=30s,nodefs.inodesFree=30s,imagefs.available=30s,imagefs.inodesFree=30s"
......