docker – 禁用Kubernetes的透明大页面

[weixin_38050892]

我通过Kubernetes部署Redis容器并收到以下警告： WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command ‘echo never > /sys/kernel/mm/transparent_hugepage/enabled’ as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled 是否可以通过Kubernetes禁用THP？也许通过init-containers？

[weixin_38066019]

是的,使用init-containers,它非常简单： apiVersion: v1 kind: Pod metadata: name: thp-test spec: restartPolicy: Never terminationGracePeriodSeconds: 1 volumes: - name: host-sys hostPath: path: /sys initContainers: - name: disable-thp image: busybox volumeMounts: - name: host-sys mountPath: /host-sys command: ["sh", "-c", "echo never >/host-sys/kernel/mm/transparent_hugepage/enabled"] containers: - name: busybox image: busybox command: ["cat", "/sys/kernel/mm/transparent_hugepage/enabled"] Demo (notice that this is a system wide setting): 06001