Rclone powered batch

doc/source/examples/argo_workflows_hdfs_batch.html

@@ -0,0 +1,3 @@
+{
+  "path": "../../../examples/batch/hdfs-argo-workflows/hdfs-batch.ipynb"
+}

doc/source/examples/notebooks.rst

@@ -92,7 +92,8 @@ Batch Processing with Seldon Core
 .. toctree::
    :titlesonly:
 
-   Batch Processing with Argo Workflows <argo_workflows_batch>
+   Batch Processing with Argo Workflows and S3 / Minio <argo_workflows_batch>
+   Batch Processing with Argo Workflows and HDFS <argo_workflows_hdfs_batch>
    Batch Processing with Kubeflow Pipelines <kubeflow_pipelines_batch>
 
 

doc/source/servers/batch.md

@@ -26,7 +26,8 @@ This allows you to leverage Seldon on a large number of batch applications, incl
 
 We have provided a set of examples that show you how you can use the Seldon batch processing component:
 
-* [Batch Processing with Argo Workflows](../examples/argo_workflows_batch.html)
+* [Batch Processing with Argo Workflows and S3 / Minio](../examples/argo_workflows_batch.html)
+* [Batch processing with Argo Workflows and HDFS](../examples/argo_workflows_hdfs_batch.html)
 * [Batch Processing with Kubeflow Pipelines Example](../examples/kubeflow_pipelines_batch.html)
 
 ## High Level Implementation Details

examples/batch/argo-workflows-batch/helm-charts/seldon-batch-workflow/Chart.yaml

@@ -6,4 +6,4 @@ keywords:
 name: seldon-batch-workflow
 sources:
 - https://github.com/SeldonIO/seldon-core
-version: 0.1
+version: 0.2

examples/batch/argo-workflows-batch/helm-charts/seldon-batch-workflow/templates/workflow.yaml

@@ -24,13 +24,17 @@ spec:
       resources:
         requests:
           storage: "{{ .Values.pvc.storage }}"
+  volumes:
+  - name: rclone-config
+    secret:
+      secretName: "{{ .Values.rclone.configSecretName }}"
   templates:
   - name: seldon-batch-process
     steps:
-    - - name: create-seldon-resource            
+    - - name: create-seldon-resource
         template: create-seldon-resource-template
     - - name: wait-seldon-resource
-        template: wait-seldon-resource-template    
+        template: wait-seldon-resource-template
     - - name: download-object-store
         template: download-object-store-template
     - - name: process-batch-inputs
@@ -39,7 +43,7 @@ spec:
         template: upload-object-store-template
     - - name: delete-seldon-resource
         template: delete-seldon-resource-template
-            
+
   - name: create-seldon-resource-template
     metadata:
       annotations:
@@ -84,7 +88,7 @@ spec:
                 name: classifier
               name: default
               replicas: {{ .Values.seldonDeployment.replicas }}
-                
+
   - name: wait-seldon-resource-template
     metadata:
       annotations:
@@ -96,34 +100,23 @@ spec:
         sleep {{ .Values.seldonDeployment.waitTime }}
         kubectl rollout status \
             deploy/$(kubectl get deploy -l seldon-deployment-id="{{ .Values.seldonDeployment.name }}" -o jsonpath='{.items[0].metadata.name}')
-                     
+
   - name: download-object-store-template
     metadata:
       annotations:
         sidecar.istio.io/inject: "false"
     script:
-      image: minio/{{ .Values.minio.minioclient.image }}
-      env:
-      - name: MINIO_SERVER_ACCESS_KEY
-        valueFrom: 
-          secretKeyRef:
-            name: {{ .Values.minio.secret.name }}
-            key: {{ .Values.minio.secret.keyName.accesskey }}
-      - name: MINIO_SERVER_ACCESS_SECRET
-        valueFrom:
-          secretKeyRef:
-            name: {{ .Values.minio.secret.name }}
-            key: {{ .Values.minio.secret.keyName.secretkey }}
-      - name: MINIO_SERVER_HOST
-        value: {{ .Values.minio.endpoint }}
+      image: {{ .Values.rclone.image }}
       volumeMounts:
       - name: "{{ .Values.pvc.name }}"
         mountPath: /assets
+      - name: rclone-config
+        mountPath: /config/rclone
+        readOnly: true
       command: [sh]
       source: |
-        mc --insecure config host add minio-local $MINIO_SERVER_HOST $MINIO_SERVER_ACCESS_KEY $MINIO_SERVER_ACCESS_SECRET --api S3v4
-        mc --insecure cp minio-local/{{ .Values.minio.inputDataPath }} /assets/input-data.txt
-            
+        rclone copyto {{ .Values.rclone.inputDataPath }} /assets/input-data.txt
+
   - name: process-batch-inputs-template
     metadata:
       annotations:
@@ -148,34 +141,24 @@ spec:
             --retries "{{ .Values.batchWorker.retries }}" \
             --input-data-path "/assets/input-data.txt" \
             --output-data-path "/assets/output-data.txt"
-      
+
   - name: upload-object-store-template
     metadata:
       annotations:
         sidecar.istio.io/inject: "false"
     script:
-      image: minio/{{ .Values.minio.minioclient.image }}
+      image: {{ .Values.rclone.image }}
       volumeMounts:
       - name: "{{ .Values.pvc.name }}"
         mountPath: /assets
+      - name: rclone-config
+        mountPath: /config/rclone
+        readOnly: true
       command: [sh]
-      env:
-      - name: MINIO_SERVER_ACCESS_KEY
-        valueFrom: 
-          secretKeyRef:
-            name: {{ .Values.minio.secret.name }}
-            key: {{ .Values.minio.secret.keyName.accesskey }}
-      - name: MINIO_SERVER_ACCESS_SECRET
-        valueFrom:
-          secretKeyRef:
-            name: {{ .Values.minio.secret.name }}
-            key: {{ .Values.minio.secret.keyName.secretkey }}
-      - name: MINIO_SERVER_HOST
-        value: {{ .Values.minio.endpoint }}
       source: |
-        mc --insecure config host add minio-local $MINIO_SERVER_HOST $MINIO_SERVER_ACCESS_KEY $MINIO_SERVER_ACCESS_SECRET --api S3v4
-        mc --insecure cp /assets/output-data.txt minio-local/{{ .Values.minio.outputDataPath }}
-   
+        rclone copyto /assets/output-data.txt {{ .Values.rclone.outputDataPath }}
+
+
   - name: delete-seldon-resource-template
     metadata:
       annotations:
@@ -186,4 +169,3 @@ spec:
       source: |
         sleep {{ .Values.seldonDeployment.waitTime }}
         kubectl delete seldondeployments -n {{ .Values.workflow.namespace }}  {{ .Values.seldonDeployment.name }}
-        

examples/batch/argo-workflows-batch/helm-charts/seldon-batch-workflow/values.yaml

@@ -8,7 +8,7 @@ workflow:
 pvc:
   # Name of the persistent volume claim to be created
   name: seldon-pvc
-  # Size of the storage volume to be created for the batch job 
+  # Size of the storage volume to be created for the batch job
   storage: 2Mi
 # Seldon deployment to be created for batch processing
 seldonDeployment:
@@ -54,22 +54,12 @@ batchWorker:
   dataType: "data"
   # Whether to enable benchmarking on the batch processor worker
   enableBenchmark: true
-minio:
-  # Minio Client (mc) Image name
-  minioclient:
-    image: mc:RELEASE.2020-10-03T02-54-56Z
-  # The location of the minio endpoint 
-  endpoint: http://minio.minio-system.svc.cluster.local:9000
-  # This is the secret that should contain the values to access minio
-  secret:
-    # The name of the secret which by default is "minio" but you can create a different one
-    name: minio
-    keyName:
-      # The key name inside that secret to find the access key to authenticate minio
-      accesskey: accesskey
-      # The key name inside that secret to find the secret key to authenticate minio
-      secretkey: secretkey
-  # The name of the file inside of minio that will contain the batch data to process
-  inputDataPath: data/input-data.txt
-  # The name of the file inside of minio that will contain the batch data to process
-  outputDataPath: data/output-data-{{workflow.uid}}.txt
+rclone:
+  # Rclone Image Name
+  image: rclone/rclone:1.53
+  # Name of secret containing rclone.conf file
+  configSecretName: rclone-config-secret
+  # The source:sourcepath of file for rclone to pull that will contain the batch data to process
+  inputDataPath: cluster-minio:data/input-data.txt
+  # The dest:destpath for rclone to know where to push results of batch processing
+  outputDataPath: cluster-minio:data/output-data-{{workflow.uid}}.txt

examples/batch/argo-workflows-batch/rclone-config.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: rclone-config-secret
+type: Opaque
+stringData:
+  rclone.conf: |
+    [cluster-minio]
+    type = s3
+    provider = minio
+    env_auth = false
+    access_key_id = minioadmin
+    secret_access_key = minioadmin
+    endpoint = http://minio.minio-system.svc.cluster.local:9000

examples/batch/argo-workflows-batch/role.yaml

@@ -0,0 +1,29 @@
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  name: workflow
+rules:
+- apiGroups:
+  - ""
+  resources:
+  - pods
+  verbs:
+  - "*"
+- apiGroups:
+  - "apps"
+  resources:
+  - deployments
+  verbs:
+  - "*"
+- apiGroups:
+  - ""
+  resources:
+  - pods/log
+  verbs:
+  - "*"
+- apiGroups:
+  - machinelearning.seldon.io
+  resources:
+  - "*"
+  verbs:
+  - "*"