openebs/init-openebs-env.yaml

---
apiVersion: apps/v1
kind: DaemonSet
metadata:
  labels:
    openebs.io/engine: mayastor
  name: init-openebs-env
  namespace: mayastor
spec:
  selector:
    matchLabels:
      openebs.io/engine: mayastor
  template:
    metadata:
      labels:
        openebs.io/engine: mayastor
    spec:
      containers:
        - command:
            - nsenter
            - --target
            - "1"
            - --mount
            - --uts
            - --ipc
            - --net
            - --pid
            - --
            - bash
            - -c
            - |
              exists=`grep vm.nr_hugepages /etc/sysctl.conf`
              echo $exists
              if [[ "${#exists}" -lt "10" ]]; then
                echo "begin to load nvme_tcp, set nr_hugepages and restart kubelet"
                modprobe nvme_tcp
                echo 1024 | tee /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
                echo vm.nr_hugepages = 1024 | tee -a /etc/sysctl.conf
                systemctl daemon-reload
                systemctl restart kubelet
              fi
              apt -y install `apt search linux-modules-extra | fgrep \`uname -r\` | sed -e "s/,.*//"`
              modprobe nvme-tcp
              nvme-tcp | tee -a /etc/modules-load.d/kvm.conf
              sleep 600000000s
          image: mcr.microsoft.com/oss/nginx/nginx:1.17.3-alpine
          imagePullPolicy: IfNotPresent
          name: init-openebs-env
          resources:
            requests:
              cpu: 10m
          securityContext:
            privileged: true
      hostPID: true
      nodeSelector:
        kubernetes.io/os: linux
        openebs.io/engine: mayastor
      tolerations:
        - effect: NoSchedule
          operator: Exists
      restartPolicy: Always
  updateStrategy:
    type: OnDelete