OpenShift 4.13通过Cluster Node Tuning Operator配置大页失败求助

严格遵循OpenShift 4.13官方文档配置HugePages，在两个不同集群上均未成功。RedHat确认这是对CoreOS机器进行变更的唯一支持方法，但始终无法生效，寻求技术帮助。

操作步骤 #

• 为节点打标签：

  oc label node clx2node hugepages-1g=true
  

• 创建并应用以下Tuned CR：

  apiVersion: tuned.openshift.io/v1
  kind: Tuned
  metadata:
      name: hugepages-1g 
      namespace: openshift-cluster-node-tuning-operator
  spec:
    profile: 
    - data: |
        [main]
        summary=Configuration for hugepages
        include=openshift-control-plane
        [bootloader]
        cmdline_openshift_node_hugepages=hugepagesz=2M hugepages=50
      name: node-hugepages-1g
    recommend:
    - match: 
      - label: hugepages-1g=true
      priority: 10
      profile: node-hugepages-1g
  

Tuned Pod报错日志 #

I1221 22:16:47.510114  106527 controller.go:494] extracting cloud provider name to /var/lib/tuned/provider
I1221 22:16:47.510225  106527 controller.go:536] written "/etc/tuned/recommend.d/50-openshift.conf" to set TuneD profile openshift-control-plane
I1221 22:16:47.510304  106527 controller.go:848] active profile (node-hugepages-1g) != recommended profile (openshift-control-plane)
I1221 22:16:47.510311  106527 controller.go:725] reloading tuned...
I1221 22:16:47.510321  106527 controller.go:728] sending HUP to PID 106570
2023-12-21 22:16:47,510 INFO     tuned.daemon.daemon: stopping tuning
2023-12-21 22:16:47,510 INFO     tuned.plugins.plugin_bootloader: removing grub2 tuning previously added by Tuned
E1221 22:16:47.511253  106527 controller.go:911] unable to sync(daemon/) requeued (0)
2023-12-21 22:16:47,511 INFO     tuned.plugins.plugin_bootloader: cannot find grub.cfg to patch
E1221 22:16:47.611533  106527 controller.go:911] unable to sync(daemon/) requeued (1)

节点状态验证 #

预期配置成功后节点会重启并应用启动参数启用大页，但实际无任何反应，节点HugePages仍未启用：

k describe node | grep huge                                                                                                                                                                                            
                    hugepages-1g=true
  hugepages-1Gi:           0
  hugepages-2Mi:           0
  hugepages-1Gi:           0
  hugepages-2Mi:           0
  hugepages-1Gi           0 (0%)        0 (0%)
  hugepages-2Mi           0 (0%)        0 (0%)

注：示例中使用的参数与文档略有不同，先尝试文档参数未成功后进行了调整，当前是能生成有效日志的最接近配置。

内容的提问来源于stack exchange，提问作者Alex Nastas