pod.yaml

#  This Kubernetes Pod configuration sets up a greengrader pod with three containers:
# 1. An init container that synchronizes submission data from remote storage to a local volume
# 2. A main container that runs the autograder, processes submissions, and stores results in the local volume
# 3. A sidecar container that syncs the results back to the remote storage
# Updated by pod.sh
# The pod is uses affinity rules to run in the best selected region in pod.sh
apiVersion: v1
kind: Pod
metadata:
  name: greengrader-151399465
spec:
  # Secret setup: https://kubernetes.io/docs/concepts/configuration/secret/#use-case-pod-with-ssh-keys
  volumes:
    - name: secret-vol-cephs3-rclone-config
      secret:
        secretName: greengrader-app-secret
    - name: data-vol
      emptyDir: {}
  initContainers:
    - name: init-rclone-copy-to-local
      image: gitlab-registry.nrp-nautilus.io/c3lab/common/rclone:1.61.1
      # imagePullPolicy: Always
      command: ["sh", "-c"]
      args:
        - >
          mkdir /data-vol/submission && rclone sync greengrader-app:submission /data-vol/submission

      volumeMounts:
        - name: secret-vol-cephs3-rclone-config
          readOnly: true
          mountPath: "/root/.config/rclone/"
        - name: data-vol
          mountPath: /data-vol
      resources:
        requests:
          memory: 128Mi
          cpu: 500m
          ephemeral-storage: 4Gi
        limits:
          memory: 128Mi
          cpu: 1000m
          ephemeral-storage: 4Gi
  containers:
    - name: autograder-pod-2455522
      image: gitlab-registry.nrp-nautilus.io/c3lab/greengrader/autograder/2455522:1.0
      imagePullPolicy: IfNotPresent
      command: ["sh", "-c"]
      args:
        - >
          echo "TIMESTART" && mv /data-vol/submission/* /autograder/submission && /autograder/run_autograder && mkdir /data-vol/results && mv /autograder/results/* /data-vol/results && echo "TIMEEND"

      volumeMounts:
        - name: data-vol
          mountPath: /data-vol
      resources:
        requests:
          memory: 256Mi
          cpu: 1000m
          ephemeral-storage: 4Gi
        limits:
          memory: 256Mi
          cpu: 1000m
          ephemeral-storage: 4Gi
    - name: sidecar-sync
      image: gitlab-registry.nrp-nautilus.io/c3lab/common/rclone:1.61.1
      command: ["sh", "-c"]
      args:
        - >
          while :; do [ -d "/data-vol/results" ] && break || sleep 30; done && rclone sync /data-vol/results greengrader-app:results

      volumeMounts:
        - name: secret-vol-cephs3-rclone-config
          readOnly: true
          mountPath: "/root/.config/rclone/"
        - name: data-vol
          mountPath: /data-vol
      resources:
        requests:
          memory: 128Mi
          cpu: 500m
          ephemeral-storage: 4Gi
        limits:
          memory: 128Mi
          cpu: 1000m
          ephemeral-storage: 4Gi
  affinity:
    nodeAffinity:
      preferredDuringSchedulingIgnoredDuringExecution:
        - weight: 1
          preference:
            matchExpressions:
              - key: topology.kubernetes.io/region
                operator: In
                values:
                  - "us-west"
              - key: topology.kubernetes.io/zone
                operator: In
                values:
                  - "ucsc"
  restartPolicy: Never
  imagePullSecrets:
    - name: regcred