example/kubecon-2019-china/horovod-sample/lm-horovod-tf-mnist-v0.5.yaml

apiVersion: batch.volcano.sh/v1alpha1
kind: Job
metadata:
  name: lm-horovod-job
  labels:
    "volcano.sh/job-type": Horovod
spec:
  minAvailable: 4
  schedulerName: volcano
  plugins:
    ssh: []
    svc: []
  # 如果有pod被 杀死，重启整个作业
  policies:
    - event: PodEvicted
      action: RestartJob
  tasks:
    - replicas: 1
      name: master
      policies:
        - event: TaskCompleted
          action: CompleteJob
      template:
        spec:
          containers:
            - command:
                - /bin/sh
                - -c
                - |
                  WORKER_HOST=`cat /etc/volcano/worker.host | tr "\n" ","`;
                  mkdir -p /var/run/sshd; /usr/sbin/sshd;
                  mpiexec --allow-run-as-root --host ${WORKER_HOST} -np 3 python tensorflow_mnist_lm.py;
              image: volcanosh/horovod-tf-mnist:0.5
              name: master
              ports:
                - containerPort: 22
                  name: job-port
              resources:
                requests:
                  cpu: "500m"
                  memory: "1024Mi"
                limits:
                  cpu: "500m"
                  memory: "1024Mi"
          restartPolicy: OnFailure
          imagePullSecrets:
            - name: default-secret
    - replicas: 3
      name: worker
      template:
        spec:
          containers:
            - command:
                - /bin/sh
                - -c
                - |
                  mkdir -p /var/run/sshd; /usr/sbin/sshd -D;
              image: volcanosh/horovod-tf-mnist:0.5
              name: worker
              ports:
                - containerPort: 22
                  name: job-port
              resources:
                requests:
                  cpu: "1000m"
                  memory: "2048Mi"
                limits:
                  cpu: "1000m"
                  memory: "2048Mi"
          restartPolicy: OnFailure
          imagePullSecrets:
            - name: default-secret
---