13.4. 在引导时配置巨页

通过标签标记所有需要相同巨页设置的节点。

$ oc label node <node_using_hugepages> node-role.kubernetes.io/worker-hp=

创建一个包含以下内容的文件，并把它命名为 hugepages_tuning.yaml：

apiVersion: tuned.openshift.io/v1
kind: Tuned
metadata:
  name: hugepages 1
  namespace: openshift-cluster-node-tuning-operator
spec:
  profile: 2
  - data: |
      [main]
      summary=Boot time configuration for hugepages
      include=openshift-node
      [bootloader]
      cmdline_openshift_node_hugepages=hugepagesz=2M hugepages=50 3
    name: openshift-node-hugepages

  recommend:
  - machineConfigLabels: 4
      machineconfiguration.openshift.io/role: "worker-hp"
    priority: 30
    profile: openshift-node-hugepages

创建 Tuned hugepages 对象

$ oc create -f hugepages-tuned-boottime.yaml

创建一个带有以下内容的文件，并把它命名为 hugepages-mcp.yaml：

apiVersion: machineconfiguration.openshift.io/v1
kind: MachineConfigPool
metadata:
  name: worker-hp
  labels:
    worker-hp: ""
spec:
  machineConfigSelector:
    matchExpressions:
      - {key: machineconfiguration.openshift.io/role, operator: In, values: [worker,worker-hp]}
  nodeSelector:
    matchLabels:
      node-role.kubernetes.io/worker-hp: ""

创建机器配置池：

$ oc create -f hugepages-mcp.yaml