Oui, avec init-containers c'est assez simple :
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"]
Démo (notez qu'il s'agit d'un paramètre à l'échelle du système) :
$ ssh THATNODE cat /sys/kernel/mm/transparent_hugepage/enabled always [madvise] never $ kubectl create -f thp-test.yaml pod "thp-test" created $ kubectl logs thp-test always madvise [never] $ kubectl delete pod thp-test pod "thp-test" deleted $ ssh THATNODE cat /sys/kernel/mm/transparent_hugepage/enabled always madvise [never]
